WO1989006500A1 - Footwear sole - Google Patents

Footwear sole Download PDF

Info

Publication number
WO1989006500A1
WO1989006500A1 PCT/DK1988/000008 DK8800008W WO8906500A1 WO 1989006500 A1 WO1989006500 A1 WO 1989006500A1 DK 8800008 W DK8800008 W DK 8800008W WO 8906500 A1 WO8906500 A1 WO 8906500A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
arch
heel
filled compartments
footwear sole
Prior art date
Application number
PCT/DK1988/000008
Other languages
French (fr)
Inventor
Lasse Hessel
Christian Beckett
Original Assignee
Cellastic A/S
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
Application filed by Cellastic A/S filed Critical Cellastic A/S
Priority to PCT/DK1988/000008 priority Critical patent/WO1989006500A1/en
Publication of WO1989006500A1 publication Critical patent/WO1989006500A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/16—Pieced soles
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
    • A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve

Definitions

  • This invention relates to a footwear sole and in particular a shoe sole, which sole comprises a system of liquid-filled compartments interconnected by flow-inhibiting passages.
  • Patent publication No. EP-170947-A1 describes a resilient support comprising a system of liquid-filled passages of the above-mentioned kind, and in said patent publication it is mentioned that such a support is suitable for shoe soles.
  • a footwear sole based on such a system of interconnected liquid-filled compartments it has been found that a surprisingly good walking comfort is obtained with a footwear sole which is characterized in that the heel, arch and toe portions of the footwear sole each comprises a separate system of liquid-filled compartments interconnected by flow-inhibiting passa ⁇ ges and that the system of liquid-filled compartments in the toe portion as well as the system of liquid-filled compartments in the heel portion are connected to the system of liquid-filled compart ⁇ ments in the arch portion through passages which are adapted so as to produce a higher resistance to liquid flow towards the arch portion than away from same.
  • the present invention is based on the discovery that the heel and toe portion of a footwear sole are exposed to heavier load during walking than the arch portion, and that in order to prevent stepping through in the two first-mentioned portions of the sole it is necessary to establish a higher degree of liquid flow resistance from the toe or the heel portion towards the arch portion than in the opposite direction, and that the liquid flow in the latter direction should be as high as possible in order to allow the amount of liquid in e.g. the heel portion to be restored rapidly, when the load on the heel portion is relieved and is transferred to the toe portion through the arch portion. The same applies, when the load on the toe portion is relieved and transferred to the heel portion.
  • the passage between the heel or toe and arch portions, respectively, is preferably provided at the edge of the sole and preferably it comprises a valve producing said asymmetric flow resistance.
  • Valves of this kind are well known in the art.
  • a particularly preferred valve consists of a bar-shaped body to which are attached radially radiating soft brushes which are longer than the radius of the passage, the free ends of the brush pointing away from the arch portion of the sole.
  • the liquid in the compartments have a higher viscosity than water, but the compartments may also contain pure water or aqueous media of substantially the same viscosity as water.
  • a relatively viscous liquid is used in said compartments it preferably consists of 80% water and 20% propylene glycol.
  • Figure 1 is a horizontal-sectional view through a shoe sole accor ⁇ ding to the invention
  • Figure 2 is an axial-sectional view through a passage connecting the heel portion with the arch portion in the shoe sole shown in Figure 1, and with a valve located within the passage,
  • Figure 3 is a cross-sectional view of the passage shown in Figure 2 equipped with a valve under liquid flow from the arch portion towards the heel portion, and
  • Figure 4 is a cross-sectional view of the passage shown in Figure 2 equipped with a valve under liquid flow from heel portion towards the arch portion.
  • the shoe sole shown in Figure 1 comprises a heel portion 1, an arch portion 2 and a toe portion 3. Each of these portions comprises a number of liquid-filled compartments 4 which are interconnected by narrow passages 5.
  • the liquid-filled compartments 4 of the heel portion 1 are connected to the liquid-filled compartments 4 of the arch portion 2 through a passage 6 located at the edge of the sole.
  • the liquid-filled compartments 4 of the toe portion 3 are connected to the liquid-filled compartments 4 of the arch portion 2 through a further passage 7.
  • Passages 6 and 7 are equipped with valves (not shown), which produce a considerably higher resistance to the liquid flow away from the heel portion or the toe portion than from the arch portion towards the heel or toe portion.
  • the valve shown in Figures 2-4 consists of a bar-shaped body 10 placed centrally in the passage 6 and having fixed thereto a large number of radially radiating soft brushes 11 which are longer than the radius of the passage and with the brushes pointing towards the heel portion.
  • Figure 3 shows the position of the brushes during flow of liquid from the arch portion 2 towards the heel portion 1 and Figure 4 the position of brushes during liquid flow in the opposite direction. As will appear by comparing Figures 3 and 4, the brushes produce a much higher resistance to flow towards the arch portion 2 than away from same.

Abstract

Footwear sole comprising a heel, an arch and a toe portion (1, 2, 3) each comprising a separate system of liquid-filled compartments (4) interconnected by flow-inhibiting passages (5) the system of liquid-filled compartments (4) in the toe portion (3) as well as the system of liquid-filled compartments (4) in the heel portion (1) being connected to the system of liquid-filled compartments (4) in the arch portion (2) through passages (7, 6) which produce a higher resistance to liquid flow towards the arch portion (2) than away from same. The footwear sole offers particularly good walking comfort.

Description

Footwear sole
This invention relates to a footwear sole and in particular a shoe sole, which sole comprises a system of liquid-filled compartments interconnected by flow-inhibiting passages.
Patent publication No. EP-170947-A1 describes a resilient support comprising a system of liquid-filled passages of the above-mentioned kind, and in said patent publication it is mentioned that such a support is suitable for shoe soles.
During the practical embodiment of a footwear sole based on such a system of interconnected liquid-filled compartments it has been found that a surprisingly good walking comfort is obtained with a footwear sole which is characterized in that the heel, arch and toe portions of the footwear sole each comprises a separate system of liquid-filled compartments interconnected by flow-inhibiting passa¬ ges and that the system of liquid-filled compartments in the toe portion as well as the system of liquid-filled compartments in the heel portion are connected to the system of liquid-filled compart¬ ments in the arch portion through passages which are adapted so as to produce a higher resistance to liquid flow towards the arch portion than away from same.
The present invention is based on the discovery that the heel and toe portion of a footwear sole are exposed to heavier load during walking than the arch portion, and that in order to prevent stepping through in the two first-mentioned portions of the sole it is necessary to establish a higher degree of liquid flow resistance from the toe or the heel portion towards the arch portion than in the opposite direction, and that the liquid flow in the latter direction should be as high as possible in order to allow the amount of liquid in e.g. the heel portion to be restored rapidly, when the load on the heel portion is relieved and is transferred to the toe portion through the arch portion. The same applies, when the load on the toe portion is relieved and transferred to the heel portion.
The passage between the heel or toe and arch portions, respectively, is preferably provided at the edge of the sole and preferably it comprises a valve producing said asymmetric flow resistance. Valves of this kind are well known in the art.
Owing to its simple construction and to its considerable sturdiness a particularly preferred valve consists of a bar-shaped body to which are attached radially radiating soft brushes which are longer than the radius of the passage, the free ends of the brush pointing away from the arch portion of the sole.
By placing such a valve in each of the two said passages the brushes spread out when the pressure in the toe portion or on the heel portion increases, thus increasing the resistance to liquid flow towards the arch portion. However, when the pressure in the arch portion is caused to exceed the pressure in the heel portion or the toe portion the brushes are pressed against the bar-shaped body and in this position they produce only limited resistance to the liquid flow through the passages in question.
Preferably, the liquid in the compartments have a higher viscosity than water, but the compartments may also contain pure water or aqueous media of substantially the same viscosity as water. When a relatively viscous liquid is used in said compartments it preferably consists of 80% water and 20% propylene glycol.
The invention will now be described more in detail with reference to the accompanying drawing, wherein:
Figure 1 is a horizontal-sectional view through a shoe sole accor¬ ding to the invention,
Figure 2 is an axial-sectional view through a passage connecting the heel portion with the arch portion in the shoe sole shown in Figure 1, and with a valve located within the passage,
Figure 3 is a cross-sectional view of the passage shown in Figure 2 equipped with a valve under liquid flow from the arch portion towards the heel portion, and
Figure 4 is a cross-sectional view of the passage shown in Figure 2 equipped with a valve under liquid flow from heel portion towards the arch portion.
The shoe sole shown in Figure 1 comprises a heel portion 1, an arch portion 2 and a toe portion 3. Each of these portions comprises a number of liquid-filled compartments 4 which are interconnected by narrow passages 5. The liquid-filled compartments 4 of the heel portion 1 are connected to the liquid-filled compartments 4 of the arch portion 2 through a passage 6 located at the edge of the sole. Similarly, the liquid-filled compartments 4 of the toe portion 3 are connected to the liquid-filled compartments 4 of the arch portion 2 through a further passage 7. Passages 6 and 7 are equipped with valves (not shown), which produce a considerably higher resistance to the liquid flow away from the heel portion or the toe portion than from the arch portion towards the heel or toe portion.
The valve shown in Figures 2-4 consists of a bar-shaped body 10 placed centrally in the passage 6 and having fixed thereto a large number of radially radiating soft brushes 11 which are longer than the radius of the passage and with the brushes pointing towards the heel portion.
Figure 3 shows the position of the brushes during flow of liquid from the arch portion 2 towards the heel portion 1 and Figure 4 the position of brushes during liquid flow in the opposite direction. As will appear by comparing Figures 3 and 4, the brushes produce a much higher resistance to flow towards the arch portion 2 than away from same.

Claims

C l a i m s
1. A footwear sole comprising of a system of liquid-filled compartments interconnected by flow-inhibiting passages, c h a r - a c t e r i z e d in that the heel, arch and toe portions of the footwear sole each comprises a separate system of liquid-filled compartments interconnected by flow-inhibiting passages and that the system of liquid-filled compartments in the toe portion as well as the system of liquid-filled compartments in the heel portion are connected to the system of liquid-filled compartments in the arch portion through passages which are adapted so as to produce higher resistance to liquid flow towards the arch portion than away from same.
2. A footwear sole according to Claim 1, c h a r a c t e r i z e d in that the passage between heel portion and toe portion, respecti¬ vely, and the arch portion is located at the edge of the sole.
3. A footwear sole according to Claims 1 or 2, c h a r a c t e r - i z e d in that the passage between heel portion and toe portion, respectively, and the arch portion is equipped with a valve consisting of an axially extending bar-shaped body having attached thereto a plurality of soft brushes which are longer than the radius of the passage, the free ends of the brushes pointing away from the arch portion of the sole.
PCT/DK1988/000008 1988-01-19 1988-01-19 Footwear sole WO1989006500A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/DK1988/000008 WO1989006500A1 (en) 1988-01-19 1988-01-19 Footwear sole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK1988/000008 WO1989006500A1 (en) 1988-01-19 1988-01-19 Footwear sole

Publications (1)

Publication Number Publication Date
WO1989006500A1 true WO1989006500A1 (en) 1989-07-27

Family

ID=8153483

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1988/000008 WO1989006500A1 (en) 1988-01-19 1988-01-19 Footwear sole

Country Status (1)

Country Link
WO (1) WO1989006500A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997003582A1 (en) * 1995-07-14 1997-02-06 Diadora S.P.A. Composite mid-sole
US6845573B2 (en) * 1994-10-14 2005-01-25 Reebok International Ltd. Support and cushioning system for an article of footwear
US8873914B2 (en) 2004-11-22 2014-10-28 Frampton E. Ellis Footwear sole sections including bladders with internal flexibility sipes therebetween and an attachment between sipe surfaces
EP2989921A1 (en) * 2006-08-22 2016-03-02 NIKE Innovate C.V. Footwear with a sole structure incorporating a lobed fluid-filled chamber
US9568946B2 (en) 2007-11-21 2017-02-14 Frampton E. Ellis Microchip with faraday cages and internal flexibility sipes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1148376A (en) * 1915-02-16 1915-07-27 Samuel S Gay Pneumatic insole.
US3795994A (en) * 1970-05-05 1974-03-12 Ava Y Dall Air-cushion socks
GB2073006A (en) * 1980-04-02 1981-10-14 Energy Shoe Co Pneumatic or hydraulic shoe sole and heel assembly
EP0062622A2 (en) * 1981-04-02 1982-10-13 Lars Gustaf Birger Peterson Shoe sole construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1148376A (en) * 1915-02-16 1915-07-27 Samuel S Gay Pneumatic insole.
US3795994A (en) * 1970-05-05 1974-03-12 Ava Y Dall Air-cushion socks
GB2073006A (en) * 1980-04-02 1981-10-14 Energy Shoe Co Pneumatic or hydraulic shoe sole and heel assembly
EP0062622A2 (en) * 1981-04-02 1982-10-13 Lars Gustaf Birger Peterson Shoe sole construction

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7181867B2 (en) * 1994-01-26 2007-02-27 Reebok International Ltd. Support and cushioning system for an article of footwear
US7475498B2 (en) * 1994-01-26 2009-01-13 Reebok International Ltd. Support and cushioning system for an article of footwear
US6845573B2 (en) * 1994-10-14 2005-01-25 Reebok International Ltd. Support and cushioning system for an article of footwear
WO1997003582A1 (en) * 1995-07-14 1997-02-06 Diadora S.P.A. Composite mid-sole
US9271538B2 (en) 2004-11-22 2016-03-01 Frampton E. Ellis Microprocessor control of magnetorheological liquid in footwear with bladders and internal flexibility sipes
US10021938B2 (en) 2004-11-22 2018-07-17 Frampton E. Ellis Furniture with internal flexibility sipes, including chairs and beds
US8959804B2 (en) 2004-11-22 2015-02-24 Frampton E. Ellis Footwear sole sections including bladders with internal flexibility sipes therebetween and an attachment between sipe surfaces
US9107475B2 (en) 2004-11-22 2015-08-18 Frampton E. Ellis Microprocessor control of bladders in footwear soles with internal flexibility sipes
US8873914B2 (en) 2004-11-22 2014-10-28 Frampton E. Ellis Footwear sole sections including bladders with internal flexibility sipes therebetween and an attachment between sipe surfaces
US11503876B2 (en) 2004-11-22 2022-11-22 Frampton E. Ellis Footwear or orthotic sole with microprocessor control of a bladder with magnetorheological fluid
US9339074B2 (en) 2004-11-22 2016-05-17 Frampton E. Ellis Microprocessor control of bladders in footwear soles with internal flexibility sipes
US11039658B2 (en) 2004-11-22 2021-06-22 Frampton E. Ellis Structural elements or support elements with internal flexibility sipes
US9642411B2 (en) 2004-11-22 2017-05-09 Frampton E. Ellis Surgically implantable device enclosed in two bladders configured to slide relative to each other and including a faraday cage
US9681696B2 (en) 2004-11-22 2017-06-20 Frampton E. Ellis Helmet and/or a helmet liner including an electronic control system controlling the flow resistance of a magnetorheological liquid in compartments
US8925117B2 (en) 2004-11-22 2015-01-06 Frampton E. Ellis Clothing and apparel with internal flexibility sipes and at least one attachment between surfaces defining a sipe
EP2644048B1 (en) * 2006-08-22 2018-07-25 NIKE Innovate C.V. Footwear with a sole structure incorporating a lobed fluid-filled structure
EP2989921A1 (en) * 2006-08-22 2016-03-02 NIKE Innovate C.V. Footwear with a sole structure incorporating a lobed fluid-filled chamber
US9568946B2 (en) 2007-11-21 2017-02-14 Frampton E. Ellis Microchip with faraday cages and internal flexibility sipes

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