WO2005002915A1 - A seat portion of a seat - Google Patents

A seat portion of a seat Download PDF

Info

Publication number
WO2005002915A1
WO2005002915A1 PCT/GB2004/002777 GB2004002777W WO2005002915A1 WO 2005002915 A1 WO2005002915 A1 WO 2005002915A1 GB 2004002777 W GB2004002777 W GB 2004002777W WO 2005002915 A1 WO2005002915 A1 WO 2005002915A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
seat portion
foam material
density
plastics foam
Prior art date
Application number
PCT/GB2004/002777
Other languages
French (fr)
Inventor
Terry Glyn Moule
Original Assignee
The Way To Win Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB0315301A external-priority patent/GB0315301D0/en
Priority claimed from GB0315300A external-priority patent/GB0315300D0/en
Application filed by The Way To Win Limited filed Critical The Way To Win Limited
Priority to CA002532070A priority Critical patent/CA2532070A1/en
Priority to AU2004253732A priority patent/AU2004253732B2/en
Priority to AT04743125T priority patent/ATE459505T1/en
Priority to EP04743125A priority patent/EP1638804B1/en
Priority to US10/563,546 priority patent/US7445292B2/en
Priority to DE602004025807T priority patent/DE602004025807D1/en
Priority to JP2006516483A priority patent/JP2007515981A/en
Publication of WO2005002915A1 publication Critical patent/WO2005002915A1/en
Priority to HK06108044.3A priority patent/HK1091659A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B60N2/646—Back-rests or cushions shape of the cushion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B60N2/643—Back-rests or cushions shape of the back-rests

Definitions

  • This invention relates to a seat portion of a seat, and also to a seat when provided with the seat portion.
  • seats comprising a seat portion and a backrest portion.
  • the seats are often such that the seat portion is not comfortable to sit on, and does not give adequate support to the posterior of a person sitting on the seat portion.
  • the seat portion may, for example, restrict the positioning of the person's pelvic girdle, and it may apply undue pressure to the person's ischial tuberosities.
  • the seat portion may cause restriction of local blood flow and/or pinching of local nerves. It is an aim of the present invention to reduce the above mentioned problem.
  • a seat portion for a seat which seat portion comprises at least a first part which is made of a first plastics foam material of a first density, and a second part which is made of a second plastics foam material of a second and different density.
  • the seat portion of the present invention is able to give a good degree of comfort to a person sitting on the seat portion, irrespective of the seat portion being used at different times by different persons of different heights and weights.
  • the seat portion may be one in which the second part is in the form of an insert which fits into a complementarily shaped recess in the first part.
  • the insert may comprise a pair of pads which are positioned so as to be underneath the cheeks of the posterior of a person sitting on the seat portion, and a pair of legs which are positioned so as to be underneath the thighs of the person sitting on the insert.
  • the pads and the legs may have curved faces which engage complementarily curved faces in the recess.
  • the pads and the legs may have rectilinear faces which engage rectilinear faces in the recess.
  • the seat portion is preferably one in which the second density is a lesser density than the first density, whereby the second part is softer than the first part.
  • the seat portion may be one in which the second part does not have any voids of the type used to increase flexibility and/or save plastics foam material.
  • the second part may be in the form of a surface-mounted addition which rests on an upper surface of the first part.
  • the second part may be fixed to the first part.
  • the fixing may be effected by an adhesive, stitching or any other suitable and appropriate fixing means.
  • the second part may be movable with respect to the first part.
  • the seat portion may be formed only of the first and second parts. Alternatively more parts may be employed so that, for example, the seat portion may comprise the first and second parts and also one, two or three more parts.
  • the seat portion may include a heating element.
  • the present invention also extends to a seat when including the seat portion of the invention.
  • the seat may include a backrest portion.
  • the backrest portion may comprise a main part which is made of a plastics foam material of the first density, and a support part which is made of a plastics foam material of a second and different density.
  • the seat may be such that a person sitting on the seat portion and resting their back on the backrest portion is able to obtain optimum lumbar support for the back of the person, irrespective of the height and weight of the person.
  • the backrest portion will comprise only one support part. If desired however the backrest portion may comprise more than one support part.
  • the support part may be fixed to the main part.
  • the fixing may be effected by an adhesive, stitching or any other suitable and appropriate fixing means.
  • the support part may be movable with respect to the main part.
  • the main part of the backrest portion may be such that it increases in thickness in a direction towards the seat portion.
  • the support part of the backrest portion may be a rectilinear support part. Other shapes for the support part may be employed.
  • the rectilinear support part may be conical in shape, with longest sides extending towards the seat portion.
  • the plastics foam material of the first density may be harder than the plastics foam material of the second density, in which case the main part will be harder than the support part.
  • the seat may include a peripheral frame which extends around the periphery of the backrest portion.
  • the seat may include a headrest portion.
  • the seat may be any suitable and appropriate seat.
  • the seat may be a vehicle seat for a motor vehicle, an aircraft seat for an aircraft, a boat seat for a boat, a military seat for a military vehicle, a train seat for a train, a hovercraft seat for a hovercraft, a domestic seat for domestic use, an office seat for office use, or an industrial seat for use in industrial premises.
  • the vehicle may be any suitable and appropriate vehicle including a car, van, bus, coach or lorry.
  • the seat may be especially advantageous for ferries where passengers are generally required to sit together in their seats for the duration of their journey.
  • the domestic seat may be a chair, armchair or settee.
  • the seat may be such that the seat portion and/or the backrest portion are made of a wide variety of different plastics foam materials. Various suitable numbers of different pieces of plastics foam material may be employed.
  • the seat portion may comprise first part made of a first plastics foam material of a first hardness and a second part which is made of a second plastics foam material of a second hardness less than the first hardness, wherein the second part is attached to an upper surface of the first part so that in use compressive forces applied to the second part are transmitted to and distributed through the first part which thus acts to limit compressive deformation of the second part.
  • a seat portion is especially useful for seating in a mobile environment.
  • An under surface of the second part may have protuberances, and the upper surface of the first part may have recesses complementary in shape to the protuberances.
  • An upper surface of the second part may be substantially planar, and co-planar with the surrounding non-recessed area of the first part.
  • Figure 1 shows a first seat of the present invention
  • Figure 2 shows part of the seat shown in Figure 1
  • Figure 3 shows a second seat of the invention
  • Figure 4 shows a third seat of the invention
  • Figure 5 is a section through the seat shown in Figure 4
  • Figure 6 shows a seat portion of a seat
  • Figure 7 shows a backrest portion of a seat
  • Figure 8 is an exploded view of the backrest portion shown in Figure 7
  • Figure 9 shows a headrest for a seat
  • Figures 10 - 14 show different seat portions of the invention
  • Figures 15 - 20 show different backrest portions that may be used in seats of the present invention.
  • a seat 2 comprising a seat portion 4 and a backrest portion 6.
  • the seat portion 4 comprises a first part 8 which is made of a first plastics foam material of a first density.
  • the seat portion 4 also comprises a second part 10 which is made of a second plastics foam material of a second and different density.
  • the second part 10 is in the form of an insert which fits into a complementarily shaped recess 12 in the first part 8.
  • the second part 10 in the form of the insert comprises a pair of pads 14, 16 which are so positioned as to be underneath the cheeks of the posterior of a person (not shown) sitting on the seat portion 4.
  • the second part 10 in the form of the insert also comprises a pair of legs 18, 20 which are positioned so as to be underneath the thighs of the person sitting on the insert.
  • the pads 14, 16 and the legs 18, 20 have curved faces 22. These curved faces 22 engage complementarily curved faces 24 in the recess 12.
  • the seat portion 4 is such that the second density is a lesser density than the first density, whereby the second part 10 is softer than the first part 8.
  • the second part 10 does not have any voids of the type used to increase flexibility and/or save plastics foam material.
  • the second part 10 is fixed in the first part 8 by fixing means in the form of an adhesive (not shown).
  • the backrest portion 6 comprises a main part 26 which is made of a plastics foam material of a first density, and a support part 28 which is made of a plastics foam material of a second and different density.
  • a person sitting on the seat 2 and resting their back on the support portion 28 is able to obtain optimum lumbar support for the back of the person irrespective of the height and weight of the person.
  • the support part 28 is fixed to the main part 26 by fixing means in the form of an adhesive (not shown).
  • the main part 26 is such that it increases in thickness in a direction towards the seat portion 4.
  • the support part 28 is a rectilinear support part 28.
  • the rectilinear support part 28 is conical shape with longest sides 30 extending towards the seat portion 4.
  • the plastics foam material of the first density of the main part is harder than the plastics foam material of the second density of the support part.
  • the seat 2 includes a peripheral frame (not shown) which extends around the periphery of the backrest portion 6.
  • a seat 36 Similar parts as in Figures 1 and 2 have been given the same reference numerals for ease of comparison and understanding. From a comparison of the seats 2 and 36, it will be seen that the seat portions 4 in the seats 2 and 36 are very similar. The spaced-apart legs 18, 20 in both seat portions 4 help to keep the person's legs slightly apart for maximum comfort during sitting.
  • the seat 36 is such that the backrest portion 6 comprises a lower part 38 and an upper part 40.
  • the upper part 40 is larger than the lower part 38 as shown. Both the lower part 38 and the upper part 40 contain portions of the support part 28 as shown.
  • the upper part 40 has a horizontal slot 42 for enabling a headrest portion 44 to be mounted on the backrest portion 6.
  • the seats 2, 36 are suitable for forming aircraft seats. Referring now to Figures 4 and 5, there is shown a seat 46 which is suitable for forming a train seat. In the seat 46, similar parts as in the seats 2 and 36 have been given the same reference numerals for ease of comparison and understanding. In the seat 46, it will be seen that there is no separate headrest portion. It will also be seen that the support part 28 is basically parallel-sided rather than being conical as shown in Figures 1, 2 and 3.
  • the seat 46 is mounted on a panel support 48 which is itself fixed with respect to an upright pole 50.
  • the pole 50 has a footplate 52 for enabling the pole 50 to be secured to a floor in a train.
  • Figure 5 illustrates how the seat 46 has a peripheral tubular frame 54.
  • Figure 6 shows in exploded form a seat portion 58.
  • the second part 10 will usually be stuck to the first part 8.
  • Other fixing means such for example as sewing may be employed.
  • the second part 10 may move with a sliding action with respect to the first part 8.
  • the under surface insert 10 is secured, e.g.
  • the seat does not have hard points and does not suffer from "bottoming out” and is thus comfortable for occupants throughout a wide range of body weights.
  • the deformability of the foam materials has been expressed in terms of their densities.
  • the parameter used to define deformability is hardness, expressed in Newtons, i.e. the force to compress the foam material by a unit distance.
  • the insert 10 will always have a hardness lower than that of the support part 8.
  • Preferred hardness ranges are 50 - 175 Newtons for the insert 10, 200 - 400 Newtons for the support part 8, 125 - 175 Newtons for the main part 26, and 50 - 125 Newtons for the support part 28.
  • Figures 7 and 8 show a backrest portion 60. Similar parts as in the backrest portion 6 have been given the same reference numerals for ease of comparison and understanding.
  • the main part 26 and the support part 28 are differently shaped to the main part 26 and the support part 28 in the backrest portion 6.
  • Figure 8 shows how the backrest portion 60 with its outwardly sloping longest sides 30 fits into a complementarily shaped recess 62 in the main part 26 of the backrest portion 60.
  • the support part 28 may be fixed in position in the recess 62 by fixing means such for example as an adhesive or stitching. Alternatively, the support part 28 may be movable in the recess 62 with respect to the main part 26.
  • Figure 9 shows a headrest portion 64 which may fit to the backrest portion of a seat.
  • the headrest portion 64 is shaped as shown and it has a main part 66 and a head support part 68.
  • the head support part 68 is of a different density to the main part 66.
  • the head support part 68 will usually be softer than the main part 66 but it may be harder if desired.
  • the head support part 68 may move with respect to the main part 66. The movement will normally be a sliding movement with the head support part 68 sliding in a complementarily shaped recess in the main part 66.
  • Figures 10 - 14 show different types of seat portions. Similar parts as in the seat portion 4 have been given the same reference numerals for ease of comparison and understanding.
  • Figure 10 shows the seat portion 70 having a first part 8 and a second part 10.
  • the first part 8 has a shaped recess 12 which is generally similar to the shaped recess 12 shown in the seat portion 4.
  • the second part 10 is generally similar to the second part 10 shown in the seat portion 4.
  • the first part 8 has style lines 72
  • the second part 10 has style lines 74.
  • a seat portion 76 in which the legs 18, 20 are each in two parts 18a, 18b, and 20a and 20b.
  • the seat portion 8 is in two parts 8a, 8b.
  • Figure 12 shows a seat portion 78 in which the first part 8 and the second part 10 are similar to the first part 8 and the second part 10 shown in Figure 10, but without the style lines 74.
  • Figure 13 shows a seat portion 80 which is similar to the seat portion 78, except that the first part 10 is formed in three pieces with a main piece 10a, and two insert pieces 10b, 10c which insert into correspondingly shaped recesses 82, 84.
  • Figure 14 shows a seat portion 86 having a first part 8 and a second part 10. The first part 8 is too thin to be provided with a shaped recess such as a recess 12.
  • the second part 10 is in the form of a surface-mounted addition which is stuck or otherwise secured by suitable fixing means in position on top of the first part 8, as shown by broken lines on the first part 8.
  • Figure 15 shows a backrest portion 88 having a main part 26 and a support part 28.
  • the support part 28 is shaped as shown and it fits into a complementarily shaped recess 90.
  • the main part 26 and the support part 28 are made of plastics foam material of different densities.
  • the plastics foam material of the main part 26 may be of a first and harder density than the plastics foam material of the second part 28.
  • the reverse arrangement may however be employed if desired.
  • Figure 16 shows a backrest portion 92 which is like the backrest portion 88 except that the support part 28 is slightly differently shaped, as is the complementarily shaped recess 90.
  • Figure 17 shows a backrest portion 94 which does not have a back support part 28. However the main part 26 has a recess 96 for receiving a headrest portion 98. The headrest portion 98 may be fixed or movable in the recess 96.
  • Figure 18 show a backrest portion 100 in which the main part 26 is in two parts 26a, 26b. Also, the support part 28 is in two parts 28a, 28b. All the parts split about a split line 102.
  • Figure 19 shows a backrest portion 104 is which the support part 28 is triangularly shaped in cross section.
  • the support part 29 fits into a corresponding triangularly shaped recess 106 in the main part 26.
  • Figure 20 shows a backrest portion 108 which is like the backrest portion 104 except that the main part 26 and the support part 28 are provided with style lines 110, 112.
  • style lines 110, 112. it is to be appreciated that the embodiments of the invention described above with reference to the accompanying drawings have been given by way of example only and that modifications may be effected.
  • a wide variety of different types of plastics foam materials may be employed in the seat portions 4 and the backrest portions 6.
  • all of the seats of the present invention may be covered with an appropriate fabric covering.
  • the seats may be of different designs to those shown.
  • the seat portions shown in the drawings may each include a heating element if desired, for example if the seats are to be for installation in road vehicles.

Abstract

A seat portion (4) for a seat (2), which seat portion (4) comprises at least a first part (8) which is made of a first plastics foam material of a first density, and a second part (10) which is made of a second plastics foam material of a second and different density.

Description

A SEAT PORTION OF A SEAT
This invention relates to a seat portion of a seat, and also to a seat when provided with the seat portion. There are may different types of seats comprising a seat portion and a backrest portion. The seats are often such that the seat portion is not comfortable to sit on, and does not give adequate support to the posterior of a person sitting on the seat portion. The seat portion may, for example, restrict the positioning of the person's pelvic girdle, and it may apply undue pressure to the person's ischial tuberosities. In addition, in the region of the person's posterior, the seat portion may cause restriction of local blood flow and/or pinching of local nerves. It is an aim of the present invention to reduce the above mentioned problem. Accordingly, in one non-limiting embodiment of the present invention there is provided a seat portion for a seat, which seat portion comprises at least a first part which is made of a first plastics foam material of a first density, and a second part which is made of a second plastics foam material of a second and different density. The seat portion of the present invention is able to give a good degree of comfort to a person sitting on the seat portion, irrespective of the seat portion being used at different times by different persons of different heights and weights. The seat portion may be one in which the second part is in the form of an insert which fits into a complementarily shaped recess in the first part. The insert may comprise a pair of pads which are positioned so as to be underneath the cheeks of the posterior of a person sitting on the seat portion, and a pair of legs which are positioned so as to be underneath the thighs of the person sitting on the insert. If desired, the pads and the legs may have curved faces which engage complementarily curved faces in the recess. Alternatively, if desired, the pads and the legs may have rectilinear faces which engage rectilinear faces in the recess. The seat portion is preferably one in which the second density is a lesser density than the first density, whereby the second part is softer than the first part. The seat portion may be one in which the second part does not have any voids of the type used to increase flexibility and/or save plastics foam material. As an alternative to the second part being in the form of an insert, the second part may be in the form of a surface-mounted addition which rests on an upper surface of the first part. In all embodiments of the invention, the second part may be fixed to the first part. The fixing may be effected by an adhesive, stitching or any other suitable and appropriate fixing means. Alternatively, the second part may be movable with respect to the first part. The seat portion may be formed only of the first and second parts. Alternatively more parts may be employed so that, for example, the seat portion may comprise the first and second parts and also one, two or three more parts. The seat portion may include a heating element. As indicated above, the present invention also extends to a seat when including the seat portion of the invention. The seat may include a backrest portion. The backrest portion may comprise a main part which is made of a plastics foam material of the first density, and a support part which is made of a plastics foam material of a second and different density. With such a backrest portion, the seat may be such that a person sitting on the seat portion and resting their back on the backrest portion is able to obtain optimum lumbar support for the back of the person, irrespective of the height and weight of the person. Usually the backrest portion will comprise only one support part. If desired however the backrest portion may comprise more than one support part. The support part may be fixed to the main part. The fixing may be effected by an adhesive, stitching or any other suitable and appropriate fixing means. Alternatively, the support part may be movable with respect to the main part. With a support part which is movable with respect to the main part, a person sitting on the seat and resting their back on the support part is able to cause the support part to adjust its position with respect to the main part in order to obtain optimum lumbar support. The main part of the backrest portion may be such that it increases in thickness in a direction towards the seat portion. The support part of the backrest portion may be a rectilinear support part. Other shapes for the support part may be employed. The rectilinear support part may be conical in shape, with longest sides extending towards the seat portion. In the backrest portion, the plastics foam material of the first density may be harder than the plastics foam material of the second density, in which case the main part will be harder than the support part. The reverse arrangement may be employed in which case the plastics foam material of the first density will be softer than the plastics foam material of the second density, whereby the main part will be softer than the support part. The seat may include a peripheral frame which extends around the periphery of the backrest portion. The seat may include a headrest portion. The seat may be any suitable and appropriate seat. Thus, for example, the seat may be a vehicle seat for a motor vehicle, an aircraft seat for an aircraft, a boat seat for a boat, a military seat for a military vehicle, a train seat for a train, a hovercraft seat for a hovercraft, a domestic seat for domestic use, an office seat for office use, or an industrial seat for use in industrial premises. Where the seat is a vehicle seat for a motor vehicle, then the vehicle may be any suitable and appropriate vehicle including a car, van, bus, coach or lorry. Where the seat is a seat for a boat or a hovercraft, then the seat may be especially advantageous for ferries where passengers are generally required to sit together in their seats for the duration of their journey. Where the seat is a domestic seat, then the domestic seat may be a chair, armchair or settee. The seat may be such that the seat portion and/or the backrest portion are made of a wide variety of different plastics foam materials. Various suitable numbers of different pieces of plastics foam material may be employed. In one embodiment of the invention the seat portion may comprise first part made of a first plastics foam material of a first hardness and a second part which is made of a second plastics foam material of a second hardness less than the first hardness, wherein the second part is attached to an upper surface of the first part so that in use compressive forces applied to the second part are transmitted to and distributed through the first part which thus acts to limit compressive deformation of the second part. Such a seat portion is especially useful for seating in a mobile environment. An under surface of the second part may have protuberances, and the upper surface of the first part may have recesses complementary in shape to the protuberances. An upper surface of the second part may be substantially planar, and co-planar with the surrounding non-recessed area of the first part. Embodiments of the invention will now be described solely by way of example and with reference to the accompanying drawings in which: Figure 1 shows a first seat of the present invention; Figure 2 shows part of the seat shown in Figure 1; Figure 3 shows a second seat of the invention; Figure 4 shows a third seat of the invention; Figure 5 is a section through the seat shown in Figure 4; Figure 6 shows a seat portion of a seat; Figure 7 shows a backrest portion of a seat; Figure 8 is an exploded view of the backrest portion shown in Figure 7; Figure 9 shows a headrest for a seat; Figures 10 - 14 show different seat portions of the invention; and Figures 15 - 20 show different backrest portions that may be used in seats of the present invention. Referring to Figures 1 and 2, there is shown a seat 2 comprising a seat portion 4 and a backrest portion 6. The seat portion 4 comprises a first part 8 which is made of a first plastics foam material of a first density. The seat portion 4 also comprises a second part 10 which is made of a second plastics foam material of a second and different density. The second part 10 is in the form of an insert which fits into a complementarily shaped recess 12 in the first part 8. The second part 10 in the form of the insert comprises a pair of pads 14, 16 which are so positioned as to be underneath the cheeks of the posterior of a person (not shown) sitting on the seat portion 4. The second part 10 in the form of the insert also comprises a pair of legs 18, 20 which are positioned so as to be underneath the thighs of the person sitting on the insert. As can be appreciated from Figures 1 and 2, the pads 14, 16 and the legs 18, 20 have curved faces 22. These curved faces 22 engage complementarily curved faces 24 in the recess 12. The seat portion 4 is such that the second density is a lesser density than the first density, whereby the second part 10 is softer than the first part 8. The second part 10 does not have any voids of the type used to increase flexibility and/or save plastics foam material. The second part 10 is fixed in the first part 8 by fixing means in the form of an adhesive (not shown). The backrest portion 6 comprises a main part 26 which is made of a plastics foam material of a first density, and a support part 28 which is made of a plastics foam material of a second and different density. A person sitting on the seat 2 and resting their back on the support portion 28 is able to obtain optimum lumbar support for the back of the person irrespective of the height and weight of the person. The support part 28 is fixed to the main part 26 by fixing means in the form of an adhesive (not shown). As can be seen from Figures 1 and 2, the main part 26 is such that it increases in thickness in a direction towards the seat portion 4. The support part 28 is a rectilinear support part 28. The rectilinear support part 28 is conical shape with longest sides 30 extending towards the seat portion 4. In the backrest portion 6, the plastics foam material of the first density of the main part is harder than the plastics foam material of the second density of the support part. The seat 2 includes a peripheral frame (not shown) which extends around the periphery of the backrest portion 6. Referring now to Figure 3, there is shown a seat 36. Similar parts as in Figures 1 and 2 have been given the same reference numerals for ease of comparison and understanding. From a comparison of the seats 2 and 36, it will be seen that the seat portions 4 in the seats 2 and 36 are very similar. The spaced-apart legs 18, 20 in both seat portions 4 help to keep the person's legs slightly apart for maximum comfort during sitting. In Figure 3, the seat 36 is such that the backrest portion 6 comprises a lower part 38 and an upper part 40. The upper part 40 is larger than the lower part 38 as shown. Both the lower part 38 and the upper part 40 contain portions of the support part 28 as shown. The upper part 40 has a horizontal slot 42 for enabling a headrest portion 44 to be mounted on the backrest portion 6. The seats 2, 36 are suitable for forming aircraft seats. Referring now to Figures 4 and 5, there is shown a seat 46 which is suitable for forming a train seat. In the seat 46, similar parts as in the seats 2 and 36 have been given the same reference numerals for ease of comparison and understanding. In the seat 46, it will be seen that there is no separate headrest portion. It will also be seen that the support part 28 is basically parallel-sided rather than being conical as shown in Figures 1, 2 and 3. The seat 46 is mounted on a panel support 48 which is itself fixed with respect to an upright pole 50. The pole 50 has a footplate 52 for enabling the pole 50 to be secured to a floor in a train. Figure 5 illustrates how the seat 46 has a peripheral tubular frame 54. Figure 6 shows in exploded form a seat portion 58. For ease of comparison and understanding, similar parts as in the seat portion 4 have been given the same reference numerals. In the seat portion 58, the second part 10 will usually be stuck to the first part 8. Other fixing means such for example as sewing may be employed. Alternatively, the second part 10 may move with a sliding action with respect to the first part 8. In the aircraft seats 2 and 36 of Figures 1 to 3, the under surface insert 10 is secured, e.g. by adhesive, to the recessed upper surface of the support part 8, in the manner illustrated in Figure 6 which shows a preferred construction for the seat portion of the seats of Figure 1 to 3. It can be seen from Figure 6 that the upper surface of the insert 10 is substantially planar and, when attached to the part 8, is co-planar with the non-recessed areas of the upper surface of the part 8. When the seat 2 or 36 is occupied, the compressive force applied to the insert 10 is transmitted to and distributed to the support part 8 which in turn transmits the force to the seat frame (not shown) which typically comprises an aluminium alloy panel supporting the under surface of the part 8. Thus, the insert 10 is supported by the part 8 which acts to prevent excessive compressive deformation of the insert 10. As a consequence, the seat does not have hard points and does not suffer from "bottoming out" and is thus comfortable for occupants throughout a wide range of body weights. The deformability of the foam materials has been expressed in terms of their densities. In the case of seats for aircraft, the parameter used to define deformability is hardness, expressed in Newtons, i.e. the force to compress the foam material by a unit distance. For the aircraft seats of the Figures 1 to 3, the insert 10 will always have a hardness lower than that of the support part 8. Preferred hardness ranges are 50 - 175 Newtons for the insert 10, 200 - 400 Newtons for the support part 8, 125 - 175 Newtons for the main part 26, and 50 - 125 Newtons for the support part 28. Figures 7 and 8 show a backrest portion 60. Similar parts as in the backrest portion 6 have been given the same reference numerals for ease of comparison and understanding. In the backrest portion 60, it will be seen that the main part 26 and the support part 28 are differently shaped to the main part 26 and the support part 28 in the backrest portion 6. Figure 8 shows how the backrest portion 60 with its outwardly sloping longest sides 30 fits into a complementarily shaped recess 62 in the main part 26 of the backrest portion 60. The support part 28 may be fixed in position in the recess 62 by fixing means such for example as an adhesive or stitching. Alternatively, the support part 28 may be movable in the recess 62 with respect to the main part 26. Figure 9 shows a headrest portion 64 which may fit to the backrest portion of a seat. The headrest portion 64 is shaped as shown and it has a main part 66 and a head support part 68. The head support part 68 is of a different density to the main part 66. The head support part 68 will usually be softer than the main part 66 but it may be harder if desired. The head support part 68 may move with respect to the main part 66. The movement will normally be a sliding movement with the head support part 68 sliding in a complementarily shaped recess in the main part 66. Figures 10 - 14 show different types of seat portions. Similar parts as in the seat portion 4 have been given the same reference numerals for ease of comparison and understanding. Figure 10 shows the seat portion 70 having a first part 8 and a second part 10. The first part 8 has a shaped recess 12 which is generally similar to the shaped recess 12 shown in the seat portion 4. The second part 10 is generally similar to the second part 10 shown in the seat portion 4. In Figure 10, it will be noted that the first part 8 has style lines 72, whilst the second part 10 has style lines 74. In Figure 11, there is shown a seat portion 76 in which the legs 18, 20 are each in two parts 18a, 18b, and 20a and 20b. Similarly, the seat portion 8 is in two parts 8a, 8b. Figure 12 shows a seat portion 78 in which the first part 8 and the second part 10 are similar to the first part 8 and the second part 10 shown in Figure 10, but without the style lines 74. Figure 13 shows a seat portion 80 which is similar to the seat portion 78, except that the first part 10 is formed in three pieces with a main piece 10a, and two insert pieces 10b, 10c which insert into correspondingly shaped recesses 82, 84. Figure 14 shows a seat portion 86 having a first part 8 and a second part 10. The first part 8 is too thin to be provided with a shaped recess such as a recess 12. In view of this, the second part 10 is in the form of a surface-mounted addition which is stuck or otherwise secured by suitable fixing means in position on top of the first part 8, as shown by broken lines on the first part 8. Figure 15 shows a backrest portion 88 having a main part 26 and a support part 28. The support part 28 is shaped as shown and it fits into a complementarily shaped recess 90. The main part 26 and the support part 28 are made of plastics foam material of different densities. The plastics foam material of the main part 26 may be of a first and harder density than the plastics foam material of the second part 28. The reverse arrangement may however be employed if desired. Figure 16 shows a backrest portion 92 which is like the backrest portion 88 except that the support part 28 is slightly differently shaped, as is the complementarily shaped recess 90. Figure 17 shows a backrest portion 94 which does not have a back support part 28. However the main part 26 has a recess 96 for receiving a headrest portion 98. The headrest portion 98 may be fixed or movable in the recess 96. Figure 18 show a backrest portion 100 in which the main part 26 is in two parts 26a, 26b. Also, the support part 28 is in two parts 28a, 28b. All the parts split about a split line 102. Figure 19 shows a backrest portion 104 is which the support part 28 is triangularly shaped in cross section. The support part 29 fits into a corresponding triangularly shaped recess 106 in the main part 26. Figure 20 shows a backrest portion 108 which is like the backrest portion 104 except that the main part 26 and the support part 28 are provided with style lines 110, 112. It is to be appreciated that the embodiments of the invention described above with reference to the accompanying drawings have been given by way of example only and that modifications may be effected. Thus, for example, a wide variety of different types of plastics foam materials may be employed in the seat portions 4 and the backrest portions 6. Also, all of the seats of the present invention may be covered with an appropriate fabric covering. The seats may be of different designs to those shown. The seat portions shown in the drawings may each include a heating element if desired, for example if the seats are to be for installation in road vehicles.

Claims

1. A seat portion for a seat, which seat portion comprises at least a first part which is made of a first plastics foam material of a first density, and a second part which is made of a second plastics foam material of a second and different density.
2. A seat portion according to claim 1 in which the second part is in the form of an insert which fits into a complementarily shaped recess in the first part.
3. A seat portion according to claim 2 in which the insert comprises a pair of pads which are positioned so as to be underneath of the posterior of a person sitting on the seat portion, and a pair of legs which are positioned so as to be underneath the thighs of the person sitting on the insert.
4. A seat portion according to claim 3 in which the pads and the legs have curved faces which engage complementarily curved faces in the recess.
5. A seat portion according to any one of the preceding claims in which the second density is a lesser density than the first density, whereby the second part is softer than the first part.
6. A seat portion according to any one of the preceding claims in which the second part does not have any voids of the type used to increase flexibility and/or save plastics foam material.
7. A seat portion according to claim 1 in which the second part is in the form of a surface-mounted addition which rests on an upper surface of the first part.
8. A seat portion according to any one of the preceding claims in which the second part is fixed to the first part.
9. A seat portion according to any one of claims 1 - 7 in which the second part is moveable with respect to the first part.
10. A seat portion according to any one of the preceding claims and including a heating element.
11. A seat when including a seat portion according to any one of the preceding claims.
12. A seat according to claim 11 and including a backrest portion.
13. A seat according to claim 12 in which the backrest portion comprises a main part which is made of a plastics foam material of a first density, and a support part which is made of a plastics foam material of a second and different density.
14. A seat according to claim 13 in which the support part is fixed to the main part.
15. A seat according to claim 13 in which the support part is moveable with respect to the main part.
16. A seat according to any one of claims 13 - 15 in which the main part is such that it increases in thickness in a direction towards the seat portion.
17. A seat according to any one of claims 13 -16 in which the support part is a rectilinear support part.
18. A seat according to claim 17 in which the rectilinear support part is conical in shape with longest sides extending towards the seat portion.
19. A seat according to any one of claims 13 - 18 in which the backrest portion is such that the plastics foam material of the first density is harder than the plastics foam material of the second density.
20. A seat according to any one of claims 12 - 19 and including a peripheral frame which extends around the periphery of the backrest portion.
21. A seat according to any one of claims 12 - 20 and including a headrest portion.
22. A seat portion for a seat, which seat portion comprising a first part made of a first plastics foam material of a first hardness and a second part which is made of a second plastics foam material of a second hardness less than the first hardness, wherein the second part is attached to an upper surface of the first part so that in use compressive forces applied to the second part are transmitted to and distributed through the first part which thus acts to limit compressive deformation of the second part.
23. A seat portion according to claim 22 in which an under surface of the second part has proturberances, and the upper surface of the first part has recesses complementary in shape to the proturberances.
24. A seat portion according to claim 23 in which an upper surface of the second part is substantially planar, and co-planar with the surrounding non- recessed area of the first part.
PCT/GB2004/002777 2003-06-30 2004-06-28 A seat portion of a seat WO2005002915A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
CA002532070A CA2532070A1 (en) 2003-06-30 2004-06-28 Seat portion of a seat
AU2004253732A AU2004253732B2 (en) 2003-06-30 2004-06-28 A seat portion of a seat
AT04743125T ATE459505T1 (en) 2003-06-30 2004-06-28 SEAT FRAME OF A SEAT
EP04743125A EP1638804B1 (en) 2003-06-30 2004-06-28 A seat portion of a seat
US10/563,546 US7445292B2 (en) 2003-06-30 2004-06-28 Seat portion of a seat
DE602004025807T DE602004025807D1 (en) 2003-06-30 2004-06-28 SEAT FRAME OF A SEAT
JP2006516483A JP2007515981A (en) 2003-06-30 2004-06-28 Seat part of seat
HK06108044.3A HK1091659A1 (en) 2003-06-30 2006-07-18 A seat portion of a seat

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0315300.4 2003-06-30
GB0315301A GB0315301D0 (en) 2003-06-30 2003-06-30 A seat
GB0315300A GB0315300D0 (en) 2003-06-30 2003-06-30 A seat
GB0315301.2 2003-06-30

Publications (1)

Publication Number Publication Date
WO2005002915A1 true WO2005002915A1 (en) 2005-01-13

Family

ID=33566543

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/002777 WO2005002915A1 (en) 2003-06-30 2004-06-28 A seat portion of a seat

Country Status (10)

Country Link
US (1) US7445292B2 (en)
EP (1) EP1638804B1 (en)
JP (1) JP2007515981A (en)
AT (1) ATE459505T1 (en)
AU (1) AU2004253732B2 (en)
CA (1) CA2532070A1 (en)
DE (1) DE602004025807D1 (en)
ES (1) ES2341957T3 (en)
HK (1) HK1091659A1 (en)
WO (1) WO2005002915A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008029182A1 (en) * 2006-09-05 2008-03-13 Nubax Limited Material suitable for shock absorption
JP2008302085A (en) * 2007-06-08 2008-12-18 Mitsubishi Motors Corp Cushion structure for seat
JP2009513297A (en) * 2005-10-31 2009-04-02 エコルネス・エイエスエイ Furniture stuffing
EP2095742A1 (en) * 2006-12-20 2009-09-02 Toyota Boshoku Kabushiki Kaisha Detachable seat pad, method of manufacturing the same, and seat using detachable seat pad
ITPS20110012A1 (en) * 2011-09-29 2013-03-30 Andrea Perlini ERGONOMIC THERAPEUTIC SEATING STRUCTURE
WO2014186866A1 (en) * 2013-05-23 2014-11-27 Proprietect L.P. Padded element, and process and mold for producing same
RU2729834C2 (en) * 2016-02-19 2020-08-12 ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи Vehicle seat (versions)

Families Citing this family (82)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0422449D0 (en) * 2004-10-08 2004-11-10 Way To Win The Ltd A seat portion for a seat
US7607738B2 (en) * 2005-09-15 2009-10-27 Matthew Wayne Gregory Contoured seat and method
US20090051199A1 (en) * 2005-09-16 2009-02-26 Robert Andrew Crosbie Back support for a chair
EP1905404B1 (en) * 2006-09-29 2010-03-31 Sunrise Medical HHG Inc. Wheelchair seat cushion
DE102007028052B4 (en) * 2006-11-09 2020-09-24 Adient Luxembourg Holding S.À R.L. Vehicle seat
KR100762716B1 (en) * 2007-04-13 2007-10-02 (주)에리트퍼니처 A chair having shape memory sponge at back
JP4388575B2 (en) * 2007-11-27 2009-12-24 本田技研工業株式会社 Vehicle seat
US7677668B2 (en) * 2008-01-08 2010-03-16 Brunswick Corporation Vehicle seats having a back support lock assembly
CN102098945B (en) 2008-05-02 2013-11-06 霍沃思公司 Tension mechanism for a weight-responsive chair
US8167326B2 (en) * 2009-01-23 2012-05-01 Izinger Maayan Seat cushion
JP5147747B2 (en) * 2009-01-29 2013-02-20 パナソニック株式会社 Chair type stretching machine
US8215714B2 (en) * 2010-05-17 2012-07-10 Lear Corporation Vehicle seat assembly with interlocking layered seating system
USD670109S1 (en) * 2010-05-26 2012-11-06 Pro Medicare S.R.L. Postural system
JP2012029998A (en) * 2010-08-03 2012-02-16 Nitto Denko Corp Cushion to keep sitting posture
US8602501B2 (en) 2010-09-14 2013-12-10 Herman Miller, Inc. Backrest
JP5604242B2 (en) * 2010-09-24 2014-10-08 株式会社ブリヂストン Seat pad and manufacturing method thereof
NL2006664C2 (en) * 2011-04-26 2012-10-29 P R Sella B V BACKREST, METHOD FOR SETTING A BACKREST AND (ROLL) SEAT WITH A BACKREST.
GB201112534D0 (en) * 2011-07-21 2011-08-31 Therrien Benoit Jr Car seat riser for the lwoer part of the thighs
KR101155211B1 (en) * 2011-08-16 2012-06-13 윤욱 a sitting mat for supporting vertebrae lumbales
EP2750551B1 (en) * 2011-09-03 2020-12-16 Loan Pham Thi Kim An orthopedic chair for treatment and prevention of spinal diseases
JP5985411B2 (en) * 2012-02-22 2016-09-06 トヨタ紡織株式会社 Cushion pad for vehicle seat
JP6026634B2 (en) * 2012-03-14 2016-11-16 ビーイー・エアロスペース・インコーポレーテッドＢ／Ｅ Ａｅｒｏｓｐａｃｅ， Ｉｎｃ． Integrally molded seat back and method for composite seat frames
CN104582535B (en) 2012-08-23 2018-02-13 李尔公司 Regio pectoris comfortably takes a seat system
CN104602569A (en) * 2012-08-23 2015-05-06 李尔公司 Thoracic region comfort seating system
TW201408514A (en) * 2012-08-28 2014-03-01 Gsk Corp Interior laminated cotton structure of car seat
US9138062B2 (en) * 2013-02-22 2015-09-22 Mark Todd Molded seat
JP6007722B2 (en) 2012-10-19 2016-10-12 スズキ株式会社 Vehicle seat back structure
US9409504B2 (en) 2013-01-24 2016-08-09 Ford Global Technologies, Llc Flexible seatback system
US9399418B2 (en) 2013-01-24 2016-07-26 Ford Global Technologies, Llc Independent cushion extension and thigh support
US9415713B2 (en) 2013-01-24 2016-08-16 Ford Global Technologies, Llc Flexible seatback system
US20150015050A1 (en) * 2013-02-25 2015-01-15 Carol N. Van Zandt Seat Cushion
US9555729B2 (en) * 2013-03-14 2017-01-31 Forsound Corp. Car seat for protecting vertebral column
US10328829B2 (en) * 2013-03-14 2019-06-25 Lear Corporation Thoracic region comfort vehicle seating system with pneumatic adjustment
US9795218B2 (en) * 2013-12-04 2017-10-24 P.A.S. Corporation Cushion for chair and chair
KR101513935B1 (en) * 2013-12-06 2015-04-21 혜성산업(주) Chair with differntiated chair back cushion density
US9365143B2 (en) * 2013-12-12 2016-06-14 Ford Global Technologies, Llc Rear seat modular cushion
DE102013021862A1 (en) * 2013-12-20 2015-06-25 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Vehicle seat for a motor vehicle
US9315131B2 (en) 2014-01-23 2016-04-19 Ford Global Technologies, Llc Suspension seat back and cushion system having an inner suspension panel
US9421894B2 (en) 2014-04-02 2016-08-23 Ford Global Technologies, Llc Vehicle seating assembly with manual independent thigh supports
US9789790B2 (en) 2014-10-03 2017-10-17 Ford Global Technologies, Llc Tuned flexible support member and flexible suspension features for comfort carriers
US20160113404A1 (en) * 2014-10-24 2016-04-28 Eduardo Walker Malleable seat base with differentiated accommodation sectors for protuberant areas applied on seats of furniture destined to accommodating individuals in the seated position
USD781603S1 (en) * 2014-12-03 2017-03-21 Maximillian Kac-Yuglich Chair
US10259353B2 (en) 2015-04-23 2019-04-16 Syntec Seating Solutions, Llc School bus seat
US10046682B2 (en) 2015-08-03 2018-08-14 Ford Global Technologies, Llc Back cushion module for a vehicle seating assembly
US20170079440A1 (en) * 2015-09-21 2017-03-23 Mark Todd Molded Seat
US9849817B2 (en) 2016-03-16 2017-12-26 Ford Global Technologies, Llc Composite seat structure
US10286818B2 (en) 2016-03-16 2019-05-14 Ford Global Technologies, Llc Dual suspension seating assembly
US9994135B2 (en) 2016-03-30 2018-06-12 Ford Global Technologies, Llc Independent cushion thigh support
GB2548906B (en) * 2016-04-01 2020-08-12 Mirus Aircraft Seating Ltd Seat back for vehicle
US10220737B2 (en) 2016-04-01 2019-03-05 Ford Global Technologies, Llc Kinematic back panel
US9889773B2 (en) 2016-04-04 2018-02-13 Ford Global Technologies, Llc Anthropomorphic upper seatback
US9802512B1 (en) 2016-04-12 2017-10-31 Ford Global Technologies, Llc Torsion spring bushing
US9845029B1 (en) 2016-06-06 2017-12-19 Ford Global Technologies, Llc Passive conformal seat with hybrid air/liquid cells
US9834166B1 (en) 2016-06-07 2017-12-05 Ford Global Technologies, Llc Side airbag energy management system
US9849856B1 (en) 2016-06-07 2017-12-26 Ford Global Technologies, Llc Side airbag energy management system
US10166895B2 (en) 2016-06-09 2019-01-01 Ford Global Technologies, Llc Seatback comfort carrier
US10377279B2 (en) 2016-06-09 2019-08-13 Ford Global Technologies, Llc Integrated decking arm support feature
US10166894B2 (en) 2016-06-09 2019-01-01 Ford Global Technologies, Llc Seatback comfort carrier
US10286824B2 (en) 2016-08-24 2019-05-14 Ford Global Technologies, Llc Spreader plate load distribution
US10279714B2 (en) 2016-08-26 2019-05-07 Ford Global Technologies, Llc Seating assembly with climate control features
US10239431B2 (en) 2016-09-02 2019-03-26 Ford Global Technologies, Llc Cross-tube attachment hook features for modular assembly and support
US10391910B2 (en) 2016-09-02 2019-08-27 Ford Global Technologies, Llc Modular assembly cross-tube attachment tab designs and functions
DE102016117564B4 (en) 2016-09-19 2020-01-16 Isringhausen Gmbh & Co. Kg Backrest for a seat, in particular for a vehicle seat
US9914378B1 (en) 2016-12-16 2018-03-13 Ford Global Technologies, Llc Decorative and functional upper seatback closeout assembly
WO2018117017A1 (en) * 2016-12-22 2018-06-28 株式会社ブリヂストン Seat pad
US10144323B2 (en) 2017-01-31 2018-12-04 Ford Global Technologies, Llc Vehicle seating assembly having abrasion resistant slip cover
US10266088B2 (en) 2017-01-31 2019-04-23 Ford Global Technologies, Llc Vehicle seating assembly having abrasion resistant bolster insert
US10596936B2 (en) 2017-05-04 2020-03-24 Ford Global Technologies, Llc Self-retaining elastic strap for vent blower attachment to a back carrier
US20190100122A1 (en) * 2017-10-04 2019-04-04 Ford Global Technologies, Llc Waterproof skinned bench seat
US10278507B1 (en) * 2018-07-05 2019-05-07 Paul F. NOWACK Bench seat with bolster configuration
JP6994438B2 (en) 2018-07-11 2022-01-14 信越化学工業株式会社 Cross-linked organosilicon resin, its manufacturing method, and cosmetics
USD875437S1 (en) * 2018-08-14 2020-02-18 Brigette Nicholson Pillow
EP3849382A4 (en) * 2018-09-12 2022-06-15 Kumar Rajaratnam An internal support system for cushions, mattresses and the like
CN112714621B (en) * 2018-09-21 2023-06-30 株式会社亚科迈 Cushion pad
WO2020141555A1 (en) * 2019-01-04 2020-07-09 Hero MotoCorp Limited Vehicle seat and manufacturing method thereof
US10709247B1 (en) * 2019-03-25 2020-07-14 Merits Health Products Co., Ltd. Cushion set
US11603019B2 (en) * 2019-06-17 2023-03-14 Zoox, Inc. Seat crush structure
EP4003824A1 (en) 2019-07-22 2022-06-01 Specialized Bicycle Components, Inc. Bicycle saddle
US11857471B2 (en) 2020-07-30 2024-01-02 Permobil, Inc. Adjustable seat cushion
TWI744193B (en) * 2021-02-20 2021-10-21 吳國源 Pelvic tilt detecting chair
USD990180S1 (en) 2021-04-30 2023-06-27 Specialized Bicycle Components, Inc. Bicycle saddle
US20240057773A1 (en) * 2022-08-16 2024-02-22 Cynthia Gomez Cushion with pressure-relieving bilobate aperture

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612607A (en) * 1969-07-18 1971-10-12 Allied Chemicals Corp Plastic foam seat construction
US4726086A (en) * 1984-07-09 1988-02-23 Milsco Manufacturing Company Composite foam seat cushion and method of preparation
US5439270A (en) * 1991-06-24 1995-08-08 Owen; Earl R. Static chair
US6098000A (en) * 1994-06-24 2000-08-01 Mccord Winn Textron Inc. Interactive, individually controlled, multiple bladder seating comfort adjustment system and method
US6447058B1 (en) * 1999-06-25 2002-09-10 Nubax Vertical Innovations, Llc Seat means for preventing shock

Family Cites Families (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US472086A (en) * 1892-04-05 Shoulder-brace
US4132228A (en) * 1977-07-08 1979-01-02 Rockwell International Corporation Comfort support seat cushion assembly
JPS5692548U (en) * 1979-12-18 1981-07-23
US4522447A (en) * 1980-02-02 1985-06-11 Snyder William F Foam seat and back cushions
JPS5790660U (en) * 1980-11-25 1982-06-04
JPS5858751U (en) * 1981-10-19 1983-04-20 トヨタ自動車株式会社 vehicle seat
US4572578A (en) * 1984-08-08 1986-02-25 Perkins Patricia A Back rest
US4643481A (en) * 1984-11-08 1987-02-17 Saloff William S Seat system for preventing decubiti
US4682818A (en) * 1986-08-14 1987-07-28 Morell Theodore R Pressure distribution pad assembly for wheelchairs
US4753480A (en) * 1986-08-14 1988-06-28 Morell Theodore R Pad assembly for wheelchairs
US4755411A (en) * 1987-04-22 1988-07-05 Milsco Limited Cushion having flexible outer membrane and multi-density resilient foam member therein
NL8820378A (en) * 1987-06-02 1990-03-01 Greiner Schaumstoffwerk SEAT WITH FOAM PLASTIC COATING AND A METHOD OF MANUFACTURING THAT.
US4835801A (en) * 1987-11-19 1989-06-06 Roloke Co. Back support cushion
US4813738A (en) * 1988-01-04 1989-03-21 Tachi-S Co., Ltd. Automotive seat with heating device
US4865379A (en) * 1988-02-04 1989-09-12 Tachi-S Co., Ltd. Automotive seat with heating device
JPH01161649U (en) * 1988-04-30 1989-11-09
US4834455A (en) * 1988-07-14 1989-05-30 Proctor Joy E Orthopedic vehicle seat
US5018790A (en) * 1988-07-20 1991-05-28 Jay Medical, Ltd. Customized seat cushion
JPH04136157U (en) * 1991-06-06 1992-12-17 アラコ株式会社 variable hardness sheet
US5513899A (en) * 1991-11-13 1996-05-07 Invacare Corporation Seat cushion for wheelchairs
US5378045A (en) * 1991-11-13 1995-01-03 Invacare Corporation Seat cushion for wheelchairs
US5294181A (en) * 1992-01-07 1994-03-15 E. R. Carpenter Company, Inc. Seat cushion
US5352023A (en) * 1992-09-16 1994-10-04 Jay Medical, Ltd. Seating and back systems for a wheelchair
US5390384A (en) * 1993-08-13 1995-02-21 Jay Medical Ltd. Self-adjusting seating system
CA2135664C (en) * 1993-11-13 2002-09-17 Patrick N. Harrison Seat cushion assembly
JP2606542Y2 (en) * 1993-12-24 2000-11-27 アラコ株式会社 Seat cushion pad structure
CA2159921A1 (en) * 1995-09-18 1997-03-19 David Harding Cushion element for use in a wheelchair
JPH09140956A (en) * 1995-11-24 1997-06-03 Bridgestone Corp Urethane foam molded pad
JP2975894B2 (en) * 1996-07-12 1999-11-10 難波プレス工業株式会社 Multi-layer seat of different hardness with skin and method of manufacturing the same
US6082824A (en) * 1996-11-08 2000-07-04 Chow; William W. Therapeutic sling seat
US6256819B1 (en) * 1997-01-22 2001-07-10 Span-America Medical Systems, Inc. Multi-section positioning wheelchair cushion
DE19801172B4 (en) * 1998-01-15 2004-01-15 Daimlerchrysler Ag Seat, in particular vehicle seat
US6241320B1 (en) * 1999-10-15 2001-06-05 Invacare Corporation Customizable seat cushion and positioning assembly including pressure compensation inserts
JP2000333788A (en) * 1999-05-31 2000-12-05 Matsushita Electric Ind Co Ltd Electric warmer
JP2001070084A (en) * 1999-09-06 2001-03-21 Suzuki Motor Corp Seat pad of seat for automobile, method for molding the same, and die for molding seat pad
EP1086852B1 (en) * 1999-09-21 2004-01-28 Johnson Controls GmbH Seat cushion for vehicle seats
JP2001087078A (en) * 1999-09-27 2001-04-03 Shinobu Okashiro Backrest gear for seat
JP2002085206A (en) * 2000-07-12 2002-03-26 Inoac Corp Wheelchair cushion
FR2815901B1 (en) * 2000-10-31 2003-08-08 Faurecia Sieges Automobile UPHOLSTERED ELEMENT FOR VEHICLE AND MANUFACTURING METHOD THEREOF
JP2002306274A (en) * 2001-04-16 2002-10-22 Toyo Tire & Rubber Co Ltd Seat cushion pad and its manufacturing method
US6625830B2 (en) * 2001-10-02 2003-09-30 Neal Lampel Wheelchair cushion
JP2003289982A (en) * 2002-03-29 2003-10-14 Kokuyo Co Ltd Seat and seat back for chair
US7140057B2 (en) * 2003-07-28 2006-11-28 Aspen Seating, Llc Reinforced and adjustable contoured seat cushion and method of reinforcing and adjusting the contoured seat cushion
US7216388B2 (en) * 2003-07-28 2007-05-15 Aspen Seating, Llc Contoured seat cushion and method for offloading pressure from skeletal bone prominences and encouraging proper postural alignment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612607A (en) * 1969-07-18 1971-10-12 Allied Chemicals Corp Plastic foam seat construction
US4726086A (en) * 1984-07-09 1988-02-23 Milsco Manufacturing Company Composite foam seat cushion and method of preparation
US5439270A (en) * 1991-06-24 1995-08-08 Owen; Earl R. Static chair
US6098000A (en) * 1994-06-24 2000-08-01 Mccord Winn Textron Inc. Interactive, individually controlled, multiple bladder seating comfort adjustment system and method
US6447058B1 (en) * 1999-06-25 2002-09-10 Nubax Vertical Innovations, Llc Seat means for preventing shock

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009513297A (en) * 2005-10-31 2009-04-02 エコルネス・エイエスエイ Furniture stuffing
WO2008029182A1 (en) * 2006-09-05 2008-03-13 Nubax Limited Material suitable for shock absorption
EP2095742A1 (en) * 2006-12-20 2009-09-02 Toyota Boshoku Kabushiki Kaisha Detachable seat pad, method of manufacturing the same, and seat using detachable seat pad
EP2095742A4 (en) * 2006-12-20 2011-10-12 Toyota Boshoku Kk Detachable seat pad, method of manufacturing the same, and seat using detachable seat pad
US8104840B2 (en) 2006-12-20 2012-01-31 Toyota Boshoku Kabushiki Kaisha Attachable and detachable type seat pad and method of fabricating the same, and seat using attachable and detachable type seat pad
JP2008302085A (en) * 2007-06-08 2008-12-18 Mitsubishi Motors Corp Cushion structure for seat
ITPS20110012A1 (en) * 2011-09-29 2013-03-30 Andrea Perlini ERGONOMIC THERAPEUTIC SEATING STRUCTURE
WO2013045481A1 (en) * 2011-09-29 2013-04-04 Perlini Andrea Ergonomic therapeutic seat structure
WO2014186866A1 (en) * 2013-05-23 2014-11-27 Proprietect L.P. Padded element, and process and mold for producing same
US10252655B2 (en) 2013-05-23 2019-04-09 Proprietect L.P. Padded element, and process and mold for producing same
RU2729834C2 (en) * 2016-02-19 2020-08-12 ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи Vehicle seat (versions)

Also Published As

Publication number Publication date
JP2007515981A (en) 2007-06-21
CA2532070A1 (en) 2005-01-13
EP1638804B1 (en) 2010-03-03
AU2004253732B2 (en) 2010-03-25
ES2341957T3 (en) 2010-06-30
US7445292B2 (en) 2008-11-04
EP1638804A1 (en) 2006-03-29
DE602004025807D1 (en) 2010-04-15
US20060170274A1 (en) 2006-08-03
AU2004253732A1 (en) 2005-01-13
ATE459505T1 (en) 2010-03-15
HK1091659A1 (en) 2007-01-26

Similar Documents

Publication Publication Date Title
EP1638804B1 (en) A seat portion of a seat
KR930010033B1 (en) Back-rest
US20090315381A1 (en) Airplane auxiliary armrest
US7806476B2 (en) Seat, especially an airplane or vehicle seat
EP0272286B1 (en) A chair member
US5906413A (en) Cover cushion used on car seat covers
US3495871A (en) Adjustable seat,primarily for motor vehicles
US10165863B2 (en) Thoracic region comfort seating system
EP2606770A1 (en) Seat cushion shell unit and shell-type seat for vehicle
EP1796513B1 (en) A seat portion for a seat
EP1618816B1 (en) Portable backrest structure
RU1804400C (en) Seat-bottom
JP4196744B2 (en) Vehicle seat
KR200395763Y1 (en) Back division type chair
JPH038119Y2 (en)
CN213768330U (en) Leg supporting structure and child seat
US3224017A (en) Vehicle seat
JP3120900U (en) Auxiliary seat cover for bus
JP7364877B2 (en) Seat cushion and vehicle seat including the seat cushion
JPH08205958A (en) Seat device
JPH0614616Y2 (en) Vehicle seat
JP2000000132A (en) Location regulating device for body contact face of chair
WO2005002914A1 (en) A seat
JP2020078645A (en) Seat
JP2595306Y2 (en) Seat cushion resin frame structure

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2004743125

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2004253732

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2006516483

Country of ref document: JP

ENP Entry into the national phase

Ref document number: 2006170274

Country of ref document: US

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 10563546

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 2004253732

Country of ref document: AU

ENP Entry into the national phase

Ref document number: 2532070

Country of ref document: CA

WWP Wipo information: published in national office

Ref document number: 2004743125

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 10563546

Country of ref document: US