US20060091716A1 - Fluid/foam filled seat bladder for occupant weight estimation - Google Patents
Fluid/foam filled seat bladder for occupant weight estimation Download PDFInfo
- Publication number
- US20060091716A1 US20060091716A1 US10/976,617 US97661704A US2006091716A1 US 20060091716 A1 US20060091716 A1 US 20060091716A1 US 97661704 A US97661704 A US 97661704A US 2006091716 A1 US2006091716 A1 US 2006091716A1
- Authority
- US
- United States
- Prior art keywords
- bladder
- foam material
- fluid
- open cell
- seat
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C4/00—Foldable, collapsible or dismountable chairs
- A47C4/54—Inflatable chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/18—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays in combination with inflatable bodies
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
-
- 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
- B60N2/90—Details or parts not otherwise provided for
- B60N2/914—Hydro-pneumatic adjustments of the shape
Definitions
- the present invention relates to estimating the seated weight of a seat occupant with a fluid-filled elastomeric bladder installed in the seat, and more particularly to a bladder that is at least partially filled with an open-cell foam material.
- the present invention is directed to an improved seat bladder in which the closed volume of the bladder is at least partially filled with an open-cell or highly-reticulated foam material at the time of bladder manufacture.
- foam material When fluid is subsequently added to the bladder, it soaks into interstices in the foam material and fills the remaining bladder volume.
- the presence of the foam material reduces the time required to evacuate the bladder prior to fluid filling, and reduces the quantity of fluid required to fill the bladder.
- the foam material increases the restoring force of the bladder and the dissipation of energy input to the bladder.
- FIG. 1 is an illustration of a prior art fluid-filled seat bladder installed in a vehicle seat
- FIGS. 2A and 2B depict the formation of a fluid-filled seat bladder according to a first embodiment of the present invention.
- FIGS. 3A and 3B depict the formation of a fluid-filled seat bladder according to a second embodiment of the present invention.
- the reference numeral 10 generally designates a vehicle seat equipped with a prior art occupant weight estimation apparatus including a fluid-filled seat bladder 12 .
- the seat 10 includes a frame and cushion pad 14 , a bottom foam cushion 16 and a back foam cushion 18 .
- a set of fasteners 19 attach the seat 10 to a pair of tracks 20 that are secured to risers, which in turn, are secured to the vehicle floor 22 .
- a bladder assembly 24 is sandwiched between the bottom cushion 16 and the frame and cushion pad 14 , and a fabric cover 26 envelops the cushion 16 , bladder assembly 24 and the frame and cushion pad 14 .
- the bladder assembly 24 comprises the fluid-filled bladder 12 , upper and lower interface panels 32 and 34 , and a pressure sensor 40 .
- the bladder 12 is formed of upper and lower sheets 12 a , 12 b of elastomeric material that are peripherally welded as indicated by the reference numeral 36 to form a closed volume, and selectively spot welded within the peripheral weld 36 as indicated by the reference numerals 38 to form a plurality of flow-through cells.
- the bladder 12 is filled with a fluid such as silicone that is non-corrosive and less subject to freezing under any naturally occurring ambient temperature conditions.
- the weight of an occupant seated on the cushion 16 is applied to the bladder 12 , and an electronic controller 42 coupled to the pressure sensor 40 develops a response to the occupant weight pressure on the bladder 12 and/or its variation with respect to time; see, for example, the aforementioned U.S. Pat. Nos. 5,987,370 and 6,246,936.
- the inter-peripheral welds 38 can prevent pooling of fluid within bladder 12 and also reduce the amount of fluid required to fill the bladder 12 .
- the present invention is directed to an improved seat bladder in which the closed volume of the bladder is at least partially filled with an open-cell or highly-reticulated foam material at the time of bladder manufacture.
- fluid When fluid is subsequently added to the bladder, it soaks into interstices in the foam material and fills the remaining bladder volume.
- the open cell foam reduces the volume of air in the sealed bladder; this reduces the time required to evacuate the bladder prior to fluid filling, and reduces the quantity of fluid required to subsequently fill the bladder. Reducing the quantity of silicone in the bladder is significant for at least two reasons: (1) it reduces the weight of the bladder, and (2) it reduces the cost of the bladder.
- the open cell foam material retains its springiness after manufacture; this increases the dissipation of energy when a load is applied to the bladder, and increases the restoring force of the bladder when the load is subsequently removed.
- FIGS. 2A-2B and FIGS. 3A-3B respectively depict the formation of an open cell foam containing seat bladder 50 , 60 according to first and second embodiments of this invention.
- a sheet 52 , 52 ′ of open cell foam material similar in shape to that of the intended bladder 50 , 60 , but somewhat smaller in area is positioned between two sheets 54 , 56 of elastomeric material that will become the upper and lower bladder sheets 12 a , 12 b .
- both the open cell foam material 52 , 52 ′ and the elastomeric sheets 54 , 56 are made from polyurethane.
- a nominal thickness of the elastomeric sheets 54 , 56 is 0.36 mm
- a nominal thickness of the open cell foam material 52 , 52 ′ is 5 mm.
- Marginal portions of the elastomeric sheets 54 , 56 are joined together to form the peripheral seam or weld 36 , sealing the sheet 52 , 52 ′ of open cell foam material within the bladder 50 , 60 . Thereafter, a the upper and lower sheets 54 , 56 are joined in a pattern of spot welds 38 within the peripheral weld 36 , as illustrated in FIG. 1 .
- the sheet 52 of open cell foam material is continuous within the peripheral weld 36 , and is included in the spot welds 38 .
- the sheet 52 ′ of open cell foam material is provided with openings 58 within its periphery that are aligned with the intended locations of the spot welds 38 ; in this case, none of the open cell foam material 52 ′ is included in the spot welds 38 .
- the present invention provides an improved seat bladder that encloses an open cell foam material.
- the presence of the foam material reduces the time required to evacuate the bladder prior to fluid filling, and when the fluid is added, it soaks into interstices in the foam material and fills the remaining bladder volume.
- the open cell foam material may have a porosity in the range about 5-20 pores per inch, and a porosity of 10 pores per inch is considered to be optimal.
- the reduced quantity of fluid within the bladder reduces the bladder weight, and makes the bladder assembly 24 easier to install in a seat 10 .
- the color of the foam material may be selected to permit easy and reliable visual distinction between versions of the bladder. And in subsequent usage, the foam material increases the restoring force of the bladder and the dissipation of energy input to the bladder, as mentioned above.
Abstract
A seat bladder has a closed volume that is at least partially filled with an open-cell or highly-reticulated foam material. The bladder fluid soaks into interstices in the foam material and fills the remaining bladder volume. The presence of the foam material reduces the time required to evacuate the bladder prior to fluid filling, and reduces the quantity of fluid required to fill the bladder. In subsequent usage, the foam material increases the restoring force of the bladder and the dissipation of energy input to the bladder.
Description
- The present invention relates to estimating the seated weight of a seat occupant with a fluid-filled elastomeric bladder installed in the seat, and more particularly to a bladder that is at least partially filled with an open-cell foam material.
- It has been demonstrated that the weight of a vehicle seat occupant can be effectively measured for purposes of determining whether to allow or suppress deployment of supplemental inflatable restraints by measuring the pressure in a fluid-filled seat bladder. See, for example, the U.S. Pat. Nos. 5,987,370 and 6,246,936, incorporated by reference herein. Silicone is a suitable bladder fluid, because it is non-corrosive and not subject to freezing even under extreme ambient conditions. As described in the U.S. Pat. No. 6,101,436, also incorporated by reference herein, the upper and lower surfaces of the seat bladder can be joined by a pattern of spot welds in order to prevent pooling and to reduce the amount of fluid required to fill the bladder.
- The present invention is directed to an improved seat bladder in which the closed volume of the bladder is at least partially filled with an open-cell or highly-reticulated foam material at the time of bladder manufacture. When fluid is subsequently added to the bladder, it soaks into interstices in the foam material and fills the remaining bladder volume. In manufacture, the presence of the foam material reduces the time required to evacuate the bladder prior to fluid filling, and reduces the quantity of fluid required to fill the bladder. In usage, the foam material increases the restoring force of the bladder and the dissipation of energy input to the bladder.
-
FIG. 1 is an illustration of a prior art fluid-filled seat bladder installed in a vehicle seat; -
FIGS. 2A and 2B depict the formation of a fluid-filled seat bladder according to a first embodiment of the present invention; and -
FIGS. 3A and 3B depict the formation of a fluid-filled seat bladder according to a second embodiment of the present invention. - Referring to the drawings, and particularly to
FIG. 1 , thereference numeral 10 generally designates a vehicle seat equipped with a prior art occupant weight estimation apparatus including a fluid-filledseat bladder 12. Theseat 10 includes a frame andcushion pad 14, abottom foam cushion 16 and aback foam cushion 18. A set offasteners 19 attach theseat 10 to a pair oftracks 20 that are secured to risers, which in turn, are secured to thevehicle floor 22. Abladder assembly 24 is sandwiched between thebottom cushion 16 and the frame andcushion pad 14, and afabric cover 26 envelops thecushion 16,bladder assembly 24 and the frame andcushion pad 14. - In the embodiment of
FIG. 1 , thebladder assembly 24 comprises the fluid-filledbladder 12, upper andlower interface panels pressure sensor 40. Thebladder 12 is formed of upper andlower sheets reference numeral 36 to form a closed volume, and selectively spot welded within theperipheral weld 36 as indicated by thereference numerals 38 to form a plurality of flow-through cells. Thebladder 12 is filled with a fluid such as silicone that is non-corrosive and less subject to freezing under any naturally occurring ambient temperature conditions. In general, the weight of an occupant seated on thecushion 16 is applied to thebladder 12, and anelectronic controller 42 coupled to thepressure sensor 40 develops a response to the occupant weight pressure on thebladder 12 and/or its variation with respect to time; see, for example, the aforementioned U.S. Pat. Nos. 5,987,370 and 6,246,936. As noted in the aforementioned U.S. Pat. No. 6,101,436, theinter-peripheral welds 38 can prevent pooling of fluid withinbladder 12 and also reduce the amount of fluid required to fill thebladder 12. - The present invention is directed to an improved seat bladder in which the closed volume of the bladder is at least partially filled with an open-cell or highly-reticulated foam material at the time of bladder manufacture. When fluid is subsequently added to the bladder, it soaks into interstices in the foam material and fills the remaining bladder volume. The open cell foam reduces the volume of air in the sealed bladder; this reduces the time required to evacuate the bladder prior to fluid filling, and reduces the quantity of fluid required to subsequently fill the bladder. Reducing the quantity of silicone in the bladder is significant for at least two reasons: (1) it reduces the weight of the bladder, and (2) it reduces the cost of the bladder. Furthermore, the open cell foam material retains its springiness after manufacture; this increases the dissipation of energy when a load is applied to the bladder, and increases the restoring force of the bladder when the load is subsequently removed.
-
FIGS. 2A-2B andFIGS. 3A-3B respectively depict the formation of an open cell foam containingseat bladder sheet bladder sheets lower bladder sheets cell foam material elastomeric sheets elastomeric sheets cell foam material - Marginal portions of the
elastomeric sheets weld 36, sealing thesheet bladder lower sheets spot welds 38 within theperipheral weld 36, as illustrated inFIG. 1 . According to the first embodiment depicted inFIGS. 2A-2B , thesheet 52 of open cell foam material is continuous within theperipheral weld 36, and is included in thespot welds 38. Such inclusion of the open cell foam material within thespot welds 38, and optionally within theperipheral weld 36 as well, is achieved most effectively when theelastomeric sheets cell foam material 52 are both comprised of the same substance such as polyurethane. According to the second embodiment depicted inFIGS. 3A-3B , thesheet 52′ of open cell foam material is provided withopenings 58 within its periphery that are aligned with the intended locations of thespot welds 38; in this case, none of the opencell foam material 52′ is included in thespot welds 38. - In summary, the present invention provides an improved seat bladder that encloses an open cell foam material. The presence of the foam material reduces the time required to evacuate the bladder prior to fluid filling, and when the fluid is added, it soaks into interstices in the foam material and fills the remaining bladder volume. The open cell foam material may have a porosity in the range about 5-20 pores per inch, and a porosity of 10 pores per inch is considered to be optimal. The reduced quantity of fluid within the bladder reduces the bladder weight, and makes the
bladder assembly 24 easier to install in aseat 10. Additionally, the color of the foam material may be selected to permit easy and reliable visual distinction between versions of the bladder. And in subsequent usage, the foam material increases the restoring force of the bladder and the dissipation of energy input to the bladder, as mentioned above. - While the invention has been described with respect to the illustrated embodiment, it is recognized that numerous modifications and variations in addition to those mentioned herein will occur to those skilled in the art. For example, even though the use of period spot welds as illustrated herein is believed to provide the best overall performance in an occupant weight detection system, it may be desired to dispense with the spot welds and to use the open cell foam material to minimize distension of the bladder and consequent pooling of the bladder fluid. This can be achieved, for example, by bonding the open cell foam material to the upper and lower sheets of elastomeric material prior to the peripheral welding operation. Accordingly, it is intended that the invention not be limited to the disclosed embodiment, but that it have the full scope permitted by the language of the following claims.
Claims (7)
1. A seat bladder for estimating the weight of a seat occupant, comprising:
upper and lower sheets of elastomeric material joined by a peripheral seam to define a closed volume;
a sheet of foam material disposed between said upper and lower sheets of elastomeric material within said peripheral seam, said foam material defining a network of interconnected cells; and
a fluid disposed within said closed volume and substantially filling said network of interconnected cells.
2. (canceled)
3. The seat bladder of claim 1 , further comprising:
at least one weld joining said upper and lower sheets of elastomeric material within said peripheral seam, said sheet of open cell foam material having an opening aligned with said weld so that said open cell foam material is not included in said weld.
4. The seat bladder of claim 1 , further comprising:
at least one weld joining said upper and lower sheets of elastomeric material within said peripheral seam, where said weld includes a region of open cell foam material intermediate the joined upper and lower sheets of elastomeric material.
5. The seat bladder of claim 4 , wherein said elastomeric material and said open cell foam material both comprise polyurethane.
6. The seat bladder of claim 1 , wherein said open cell foam material has a porosity in the range of about five pores per inch to about twenty pores per inch.
7. The seat bladder of claim 1 , wherein said fluid comprises silicone.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/976,617 US20060091716A1 (en) | 2004-10-29 | 2004-10-29 | Fluid/foam filled seat bladder for occupant weight estimation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/976,617 US20060091716A1 (en) | 2004-10-29 | 2004-10-29 | Fluid/foam filled seat bladder for occupant weight estimation |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060091716A1 true US20060091716A1 (en) | 2006-05-04 |
Family
ID=36260982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/976,617 Abandoned US20060091716A1 (en) | 2004-10-29 | 2004-10-29 | Fluid/foam filled seat bladder for occupant weight estimation |
Country Status (1)
Country | Link |
---|---|
US (1) | US20060091716A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060196276A1 (en) * | 2005-03-02 | 2006-09-07 | Fortune Duane D | Capacitive load cell apparatus having silicone-impregnated foam dielectric pads |
US20140167460A1 (en) * | 2012-08-29 | 2014-06-19 | Continental Automotive Gmbh | Control Element for a Vehicle Seat |
US9642469B2 (en) * | 2014-12-31 | 2017-05-09 | Paul Savicki | Seating apparatus with adjustable cushioning |
WO2018170534A1 (en) * | 2017-03-24 | 2018-09-27 | Comfort Concepts Pty Limited | Improved seating cushion |
US20190106030A1 (en) * | 2017-10-09 | 2019-04-11 | GM Global Technology Operations LLC | Conformable and reconfigurable occupant support structure |
US20220155159A1 (en) * | 2019-03-15 | 2022-05-19 | Massachusetts Institute Of Technology | Microscale and nanoscale structured electromechanical transducers employing compliant dielectric spacers |
US11618348B2 (en) * | 2020-05-26 | 2023-04-04 | Honda Motor Co., Ltd. | Systems and methods of adjusting the hardness of a passenger seat |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3574873A (en) * | 1968-05-14 | 1971-04-13 | James D Weinstein | Fluid-type support structure for simulating flotation-type support |
US4175263A (en) * | 1977-04-25 | 1979-11-20 | Triad & Associates, Inc. | Technique for monitoring whether an individual is moving from a particular area |
US4579388A (en) * | 1984-07-05 | 1986-04-01 | Tachikawa Spring Co., Ltd. | Seat |
US4663211A (en) * | 1984-09-29 | 1987-05-05 | Tachikawa Spring Co., Ltd. | Trim cover assembly for a vehicle seat |
US5336352A (en) * | 1993-04-23 | 1994-08-09 | Tachi-S Co., Ltd. | Method for forming a trim cover assembly for automotive seat |
US5357804A (en) * | 1991-09-17 | 1994-10-25 | Rolf Wesemann | Device including a planar matrix of fluid filled bags for measuring pressure acting on a support |
US5597200A (en) * | 1993-11-22 | 1997-01-28 | Amerigon, Inc. | Variable temperature seat |
US5626657A (en) * | 1993-06-22 | 1997-05-06 | Teksource, Lc | Composite microsphere and lubricant mixture |
US5927427A (en) * | 1997-09-05 | 1999-07-27 | Automotive Systems Laboratory, Inc. | Seat weight having self-regulating fluid filled bladder |
US5987370A (en) * | 1997-09-03 | 1999-11-16 | Delco Electronics Corp. | Vehicle occupant weight estimation apparatus having fluid-filled seat bladder |
US6045155A (en) * | 1997-01-16 | 2000-04-04 | Automotive Systems Laboratory, Inc. | Vehicle seat sensor having self-maintaining air bladder |
US6246936B1 (en) * | 1999-10-05 | 2001-06-12 | Delphi Technologies, Inc. | Vehicle occupant characterization method based on sensed occupant weight |
US6431591B1 (en) * | 1999-02-26 | 2002-08-13 | Wacker Silicones Corporation | Airbag sensor deactivator suitable for use in smart airbag system |
-
2004
- 2004-10-29 US US10/976,617 patent/US20060091716A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3574873A (en) * | 1968-05-14 | 1971-04-13 | James D Weinstein | Fluid-type support structure for simulating flotation-type support |
US4175263A (en) * | 1977-04-25 | 1979-11-20 | Triad & Associates, Inc. | Technique for monitoring whether an individual is moving from a particular area |
US4579388A (en) * | 1984-07-05 | 1986-04-01 | Tachikawa Spring Co., Ltd. | Seat |
US4663211A (en) * | 1984-09-29 | 1987-05-05 | Tachikawa Spring Co., Ltd. | Trim cover assembly for a vehicle seat |
US5357804A (en) * | 1991-09-17 | 1994-10-25 | Rolf Wesemann | Device including a planar matrix of fluid filled bags for measuring pressure acting on a support |
US5336352A (en) * | 1993-04-23 | 1994-08-09 | Tachi-S Co., Ltd. | Method for forming a trim cover assembly for automotive seat |
US5626657A (en) * | 1993-06-22 | 1997-05-06 | Teksource, Lc | Composite microsphere and lubricant mixture |
US5597200A (en) * | 1993-11-22 | 1997-01-28 | Amerigon, Inc. | Variable temperature seat |
US6045155A (en) * | 1997-01-16 | 2000-04-04 | Automotive Systems Laboratory, Inc. | Vehicle seat sensor having self-maintaining air bladder |
US5987370A (en) * | 1997-09-03 | 1999-11-16 | Delco Electronics Corp. | Vehicle occupant weight estimation apparatus having fluid-filled seat bladder |
US6101436A (en) * | 1997-09-03 | 2000-08-08 | Delco Electronics Corp. | Vehicle occupant weight estimation apparatus having fluid-filled multi-cell seat bladder |
US5927427A (en) * | 1997-09-05 | 1999-07-27 | Automotive Systems Laboratory, Inc. | Seat weight having self-regulating fluid filled bladder |
US6431591B1 (en) * | 1999-02-26 | 2002-08-13 | Wacker Silicones Corporation | Airbag sensor deactivator suitable for use in smart airbag system |
US6246936B1 (en) * | 1999-10-05 | 2001-06-12 | Delphi Technologies, Inc. | Vehicle occupant characterization method based on sensed occupant weight |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060196276A1 (en) * | 2005-03-02 | 2006-09-07 | Fortune Duane D | Capacitive load cell apparatus having silicone-impregnated foam dielectric pads |
US7159471B2 (en) * | 2005-03-02 | 2007-01-09 | Delphi Technologies, Inc. | Capacitive load cell apparatus having silicone-impregnated foam dielectric pads |
US20140167460A1 (en) * | 2012-08-29 | 2014-06-19 | Continental Automotive Gmbh | Control Element for a Vehicle Seat |
US9642469B2 (en) * | 2014-12-31 | 2017-05-09 | Paul Savicki | Seating apparatus with adjustable cushioning |
WO2018170534A1 (en) * | 2017-03-24 | 2018-09-27 | Comfort Concepts Pty Limited | Improved seating cushion |
GB2575201A (en) * | 2017-03-24 | 2020-01-01 | Comfort Concepts Pty Ltd | Improved seating cushion |
GB2575201B (en) * | 2017-03-24 | 2022-07-13 | Comfort Concepts Pty Ltd | Improved seating cushion |
US11672356B2 (en) | 2017-03-24 | 2023-06-13 | Comfort Concepts Pty Limited | Seating cushion |
US20190106030A1 (en) * | 2017-10-09 | 2019-04-11 | GM Global Technology Operations LLC | Conformable and reconfigurable occupant support structure |
US10688899B2 (en) * | 2017-10-09 | 2020-06-23 | GM Global Technology Operations LLC | Conformable and reconfigurable occupant support structure |
US20220155159A1 (en) * | 2019-03-15 | 2022-05-19 | Massachusetts Institute Of Technology | Microscale and nanoscale structured electromechanical transducers employing compliant dielectric spacers |
US11618348B2 (en) * | 2020-05-26 | 2023-04-04 | Honda Motor Co., Ltd. | Systems and methods of adjusting the hardness of a passenger seat |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6076214A (en) | Inflatable mattress assemblies | |
EP0155264B1 (en) | Damped fluid displacement support system and method for making the same | |
CN102325480B (en) | Pneumatic seat cushion system | |
US20060091716A1 (en) | Fluid/foam filled seat bladder for occupant weight estimation | |
JP4312176B2 (en) | Composite partial mattress or mattress overlay and manufacturing method thereof | |
US20100132120A1 (en) | Adaptive Seat Cushion Having A Pressure-Relieving Structure | |
CN102421334B (en) | The universal bed insert constructed by the mattress in conjunction with airtight valve and the method for producing for it | |
JP2007050133A (en) | Vehicle seat pad | |
US7188536B2 (en) | Fluid-filled seat bladder having integral interface panel | |
WO2019116685A1 (en) | Seat pad, vehicle seat, vehicle seat control method, and seat pad manufacturing method | |
JP4089918B2 (en) | Inflator bag for occupant restraint device, mounting structure thereof, and occupant waist restraint device | |
JP4930803B2 (en) | Air cell cushion | |
US7000948B2 (en) | Internally tethered seat bladder for occupant weight estimation | |
CN211657810U (en) | Tensioning type cavity, connecting cavity, seat and bedding | |
JP4031326B2 (en) | cushion | |
JPH0625186Y2 (en) | Sheet | |
JP2005237634A (en) | Cushion | |
JP2968229B2 (en) | Grain packaging bag, packaged grain, and fusion sealing method | |
US20230284792A1 (en) | Air cushion | |
JP2019093778A (en) | Vehicle seat | |
CN214905674U (en) | Pillow with good use experience | |
JP5580649B2 (en) | Air cushion | |
JP5242339B2 (en) | Molding method of different hardness pad and foaming mold used for the molding | |
JP3101240U (en) | Liquid sealing cushion | |
JPH0677592U (en) | Air cushions for vehicle seats |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DELPHI TECHNOLOGIES, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FORTUNE, DUANE D.;WAIDNER, JOHN T;KOORS, MARK A.;REEL/FRAME:015946/0109 Effective date: 20041025 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |