US3765422A - Fluid cushion podiatric insole - Google Patents

Fluid cushion podiatric insole Download PDF

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US3765422A
US3765422A US3765422DA US3765422A US 3765422 A US3765422 A US 3765422A US 3765422D A US3765422D A US 3765422DA US 3765422 A US3765422 A US 3765422A
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wall
podiatric
insole
flowable material
device according
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H Smith
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SMITH H
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/02Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
    • A43B17/03Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient filled with a gas, e.g. air

Abstract

A podiatric insole in the form of a flat flexible envelope of the outline of a wearer''s foot and containing a liquid or semiliquid flowable cushioning medium. A transverse wall divides the interior of the insole into front and rear chambers, the transverse wall extending along the forward edges of the metatarsal pressure points of the foot of the wearer. The rear chamber has longitudinal walls directing the flowable medium forwardly and rearwardly in such chamber and the front chamber may also have such flow-directing longitudinal wall formations.

Description

1 1 Oct. 16, 1973 Primary ExaminerAldrich F. Medbery Attorney-Conrad Christel et a1.

[57] ABSTRACT A podiatric insole in the form of a flat flexible envelope of the outline of a wearers foot and containing a liquid or semi-liquid flowable cushioning medium. A transverse wall divides the interior of the insole into front and rear chambers, the transverse wall extending Inventor: Henry M. Smith, 8575 Main St.,

Williamsville, NY. 14221 Dec. 27, 1971 s e r u .W F g .m w a -l D 3 S, .m h C 8 along the forward edges of the metatarsal pressure points of the foot of the wearer. The rear chamber has longitudinal walls directing the flowable medium forwardly and rearwardly in such chamber and the front chamber may also have such flow-directing longitudinal wall formations.

9 4454 M% 9999 5555 I 8888 noun 3 n A5 u "3 m mm B B m m n 7 m N u u 2 u m m m d n m "M A w n 1 U .nP mm m C "M .m n m m "n W 0 0 "u n m hd n A tmnm T Cum e wD n ....S S n D E5993 465 MS wwww N//// 7896 C 0 U d 1 4. 866 .mm B876 579 HUN .1 4764 55 3 [.I .l 1232 United States Patent Smith FLUID CUSHION PODIATRIC INSOLE [22] Filed:

[21] Appl. No.: 211,945

INVENTOR. HENRY M. SM \TH ATTORNEYS PMENTEDUBT 18 I973 FLUID CUSHION PODIATRIC INSOLE BACKGROUND OF THE INVENTION This invention relates to podiatric devices and particularly to an insole structure which may comprise 21 separate insole disposable in an article of footwear or may be incorporated in the footwear structure.

In the prior art various cushioning devices have been proposed for use between the bottom of a users foot and the sole and heel structure of a shoe. Among these proposals are some in which a flowable substance is contained within a relatively flat envelope, the flowable substance being displaced by pressure of portions of the users foot thereon.

One form of prior art device is exemplified in U.S. Pat. No. 3,469,576, dated Sept. 30, 1969, in which I am a coinventor. In this prior device the cushioning medium is a flowable liquid or semi-liquid material and the device is provided with longitudinal channels disposed and proportioned to direct and to some extent restrict longitudinal flow of the cushioning material. I have found that in use devices of this type are subject to the objection that the flowable material tends to be displaced forwardly in the device and to a considerable extent trapped in such forward portion by the major downward pressure exerted at the metartarsals of the foot of the user.

SUMMARY OF THE INVENTION The podiatric device of the present invention provides an insole structure in the form of a relatively flat envelope containing a flowable fluid or semi-fluid material wherein a transverse wall is provided along a line defined by forward portions of the metatarsals of the foot of the user. By this means trapping of the fluent cushioning material in the forward portion of the insole is obviated and a very significantly better cushioning action is provided. A

In a normal stride the foot of the user exerts, a forward rocking action; the first pressure is at the heel of the user and this pressure application to the insole moves forwardly thereof as the forward portion of the user's foot comes down. In the present device the forward limits of the envelope portion beginning at the rear of the insole lie at the front edge of the metatarsals which exert the greatest downward pressure in a normal stride. However, because of the transverse wall of the present combination fluid displaced by the pressure of the metatarsals must move rearwardly of the insole and cannot be crowded into and trapped in the forward portion.

In addition to this transverse wall, the portion of the insole of the present invention rearwardly of the transverse wall is preferably, but not necessarily, provided with generally longitudinally extending flow directing walls which provide longitudinal channels with limited lateral flow between the channels thus formed. The portion of the insole forwardly of the transverse wall may also be provided with flow directing walls although the necessity for such walls is less imperative forwardly of the transverse wall due to the limited longitudinal extent thereof and the laterally more uniformly distributed pressure in such forward portion.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a plan view of one form of the insole of the present invention;

2 FIG. 2 is a transverse cross-sectional view on the line IlII of FIG. 1; and

FIG. 3 is a view similar to FIG. 2 but showing a modified interior structure of the insole.

DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS In FIG. 1 the numeral 10 designates'an insole which comprises a flat envelope having the outline of the interior bottom portion of an article of footwear, that is, of substantially the outline of the users foot. Envelope 10 has upper and lower walls 11 and 12 and is generally hermetically sealed. A flowable medium is indicated at 13 in FIG. 2 and this medium may comprise a liquid or semi-liquid substance. In order to reduce the weight of the device the liquid or semi-liquid substance may contain what are known in the pertinent arts as phenolic beads or micro-balloons which are hollow spheroidal plastic bodies-of very light weight.

In the manufacture of the articles of the present invention suitable openings will be formed for introducing the flowable material and such openings may be sealed off after filling.

As shown in FIG. 1 a transverse wall 15 extends across the interior of the envelope 10 so that there is no fluid communication between the interior of the envelope rearwardly of such wall and the interior of the envelope forwardly of the wall.

In the embodiment set forth herein by way of example, a pair of longitudinal wall formations 16 and 17 are provided which form channels extending from transverse wall 15 rearwardly where the walls curve toward each other and are spaced to provide an opening designated 18. Wall 17 is curved as shown at 19 to follow the arch portion of the users foot and openings are provided in the walls 16 and 17 to permit limited lateral flow between the three longitudinal channels formed by the wall formations 16 and 17. In FIG. 1 such openings are designated 21, 22 and 23.

The interior of the portion of the insole forwardly of transverse wall 15 may be provided with longitudinal wall formations 25 and 26 and in the illustrated instance is further provided with partial wall formations 27 and 28. Relatively free lateral flow rearwardly of the walls 27 and 28, that is, between transverse wall 15 and walls 27 and 28, is established by virtue of openings 31 and 32 in longitudinal wall formations 25 and 26.

Each of the three longitudinal channels formed by walls 25 and 26 is provided with a pair of rearwardly converging walls 35 and 36 by reason of which forward flow in this forward portion of the envelope 10 is somewhat more restricted than rearward or return flow of the flowable medium, thus further avoiding crowding and trapping of the flowable medium forwardly of the maximum pressure area in the region of the metatarsals.

FIG. 3 shows an embodiment wherein an envelope 40 is of the same general outline as the envelope 10 of FIG. 1 and in which the various transverse and longitudinal wall formations described in connection with the embodiment of FIGS. 1 and 2 are achieved by merely heat-sealing the upper and lower walls 41 and 42 of envelope 40 to each other along lines which form wall portions as in the previously described embodiment. In FIG. 3 the heat-sealed portions 43 and 44 correspond to the wall formations 16 and 17 of FIG. 1. A transverse wall effected by heat-sealing corresponds to the transverse wall of the embodiment of FIGS. 1 and 2. Apart from the manner ofachievement of the wall forma'tions, the distribution and arrangement thereof in the embodiment of FIG. 3 may be the same as illustrated in FIG. 1.

For convenience of illustration, the insole embodiments illustrated and described herein are disclosed as shoe inserts but it is to be understood that the principles of the present invention apply equally to insoles fabricated integrally with footwear in which case the lower wall may be permanently attached to or integrated with the sole structure of an article of footwear and the term insole as used herein embraces both the separable and integrated types.

Preferred embodiments have been described herein and shown in the accompanying drawing to illustrate the underlying principles of the invention but it is to be understood that numerous modifications may be made without departing from the broad spirit and scope of the invention.

I claim:

1. A podiatric insole comprising a flexible envelope conforming generally in outline to and extending substantially the full length of a wearers foot and having an upper wall adapted to engage against the underside of such wearer's foot and a lower wall coextensive with and connected along its side edges to the upper wall to form a closed envelope, a continuous transverse wall dividing the interior of said envelope into noncommunicating front and rear chamber portions, said wall being located on a portion of the insole corresponding to the forward margins of the metatarsal pressure points of the wearer, both chamber portions containing a flowable at least semi-liquid cushioning material.

2. A podiatric insole according to claim 1 wherein said rear chamber portion includes longitudinal wall formations providing longitudinal channels for said flowable material.

3. A podiatric device according to claim 2 wherein said rear chamber portion wall formations include openings providing limited lateral flow of said flowable material between the longitudinal channels.

4. A podiatric device according to claim 1 wherein said flowable material comprises solid particles disposed in a liquid medium.

5. A podiatric device according to claim 2 wherein said flowable material comprises solid particles disposed in a liquid medium.

6. A podiatric device according to claim 1 wherein said front chamber portion includes generally longitudinal wall formations providing longitudinal channels for said flowable material.

7. A podiatric device according to claim 3 wherein said front chamber portion includes generally longitudinal wall formations providing longitudinal channels for said flowable material.

8. A podiatric device according to claim 6 wherein said flowable material comprises solid particles disposed in a liquid medium.

Claims (8)

1. A podiatric insole comprising a flexible envelope conforming generally in outline to and extending substantially the full length of a wearer''s foot and having an upper wall adapted to engage against the underside of such wearer''s foot and a lower wall coextensive with and connected along its side edges to the upper wall to form a closed envelope, a continuous transverse wall dividing the interior of said envelope into noncommunicating front and rear chamber portions, said wall being located on a portion of the insole corresponding to the forward margins of the metatarsal pressure points of the wearer, both chamber portions containing a flowable at least semi-liquid cushioning material.
2. A podiatric insole according to claim 1 wherein said rear chamber portion includes longitudinal wall formations providing longitudinal channels for said flowable material.
3. A podiatric device according to claim 2 wherein said rear chamber portion wall formations include openings providing limited lateral flow of said flowable material between the longitudinal channels.
4. A podiatric device according to claim 1 wherein said flowable material comprises solid particles disposed in a liquid medium.
5. A podiatric device according to claim 2 wherein said flowable material comprises solid particles disposed in a liquid medium.
6. A podiatric device according to claim 1 wherein said front chamber portion includes generally longitudinal wall formations providing longitudinal channels for said flowable material.
7. A podiatric device according to claim 3 wherein said front chamber portion includes generally longitudinal wall formations providing longitudinal channels for said flowable material.
8. A podiatric device according to claim 6 wherein said flowable material comprises solid particles disposed in a liquid medium.
US3765422A 1971-12-27 1971-12-27 Fluid cushion podiatric insole Expired - Lifetime US3765422A (en)

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US3871117A (en) * 1973-04-17 1975-03-18 Rex E Richmond Fluid filled insoles
US3914881A (en) * 1975-02-03 1975-10-28 Rex Striegel Support pad
US3990457A (en) * 1975-08-14 1976-11-09 Curiel Products Corporation Podiatric insole
US4008530A (en) * 1976-01-05 1977-02-22 The Raymond Lee Organization, Inc. Inflatable sole shoe
US4100686A (en) * 1977-09-06 1978-07-18 Sgarlato Thomas E Shoe sole construction
WO1979000210A1 (en) * 1977-10-14 1979-04-19 American Pneumatics Co Self-contained fluid pressure foot support device
US4217705A (en) * 1977-03-04 1980-08-19 Donzis Byron A Self-contained fluid pressure foot support device
US4656760A (en) * 1985-02-26 1987-04-14 Kangaroos U.S.A., Inc. Cushioning and impact absorptive means for footwear
US4802289A (en) * 1987-03-25 1989-02-07 Hans Guldager Insole
US4934072A (en) * 1989-04-14 1990-06-19 Wolverine World Wide, Inc. Fluid dynamic shoe
WO1992003070A1 (en) * 1990-08-27 1992-03-05 Alden Laboratories, Inc. Self-reinitializing padding device
US5113599A (en) * 1989-02-08 1992-05-19 Reebok International Ltd. Athletic shoe having inflatable bladder
EP0500247A2 (en) * 1991-02-20 1992-08-26 Asics Corporation A shoe
US5150490A (en) * 1988-01-25 1992-09-29 Storopack Hans Reichenecker Gmbh & Co. Process for producing a resilient or padded insert for footwear
GB2263619A (en) * 1992-01-31 1993-08-04 Lake Jonathan Russell Curtis Shoe structure
US5313717A (en) * 1991-12-20 1994-05-24 Converse Inc. Reactive energy fluid filled apparatus providing cushioning, support, stability and a custom fit in a shoe
US5406719A (en) * 1991-11-01 1995-04-18 Nike, Inc. Shoe having adjustable cushioning system
US5425184A (en) * 1993-03-29 1995-06-20 Nike, Inc. Athletic shoe with rearfoot strike zone
WO1996028055A1 (en) * 1995-03-15 1996-09-19 Acushnet Company Conforming shoe construction and gel compositions therefor
WO1996037124A1 (en) * 1995-05-23 1996-11-28 Juergens Ute Multi-layer insole
FR2734473A1 (en) * 1995-05-27 1996-11-29 Saniwey Medizinische Lagerungs orthopedic Support
US5595004A (en) * 1994-03-30 1997-01-21 Nike, Inc. Shoe sole including a peripherally-disposed cushioning bladder
US5625964A (en) * 1993-03-29 1997-05-06 Nike, Inc. Athletic shoe with rearfoot strike zone
US5669161A (en) * 1990-02-26 1997-09-23 Huang; Ing-Jing Shock-absorbing cushion
US5756195A (en) * 1995-06-07 1998-05-26 Acushnet Company Gel cushion conprising rubber polymer and oil
US5766704A (en) * 1995-10-27 1998-06-16 Acushnet Company Conforming shoe construction and gel compositions therefor
US5765298A (en) * 1989-03-17 1998-06-16 Nike, Inc. Athletic shoe with pressurized ankle collar
US5827459A (en) * 1995-03-15 1998-10-27 Acushnet Company Conforming shoe construction using gels and method of making the same
US5878510A (en) * 1993-04-15 1999-03-09 Schoesler; Henning R. Fluid filled insole
WO1999029204A1 (en) * 1997-12-05 1999-06-17 New Balance Athletic Shoe, Inc. Shoe sole cushion
US5939157A (en) * 1995-10-30 1999-08-17 Acushnet Company Conforming shoe construction using gels and method of making the same
US5985383A (en) * 1995-03-15 1999-11-16 Acushnet Company Conforming shoe construction and gel compositions therefor
US5987779A (en) * 1987-08-27 1999-11-23 Reebok International Ltd. Athletic shoe having inflatable bladder
US6092310A (en) * 1993-04-15 2000-07-25 Schoesler; Henning R. Fluid filled insole
US6128837A (en) * 1996-06-15 2000-10-10 Huang; Ing Jing Three dimensional shoe vamp air cushion
US6138382A (en) * 1993-04-15 2000-10-31 Schoesler; Henning R. Fluid filled insole
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US6385864B1 (en) 2000-03-16 2002-05-14 Nike, Inc. Footwear bladder with controlled flex tensile member
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US6457262B1 (en) 2000-03-16 2002-10-01 Nike, Inc. Article of footwear with a motion control device
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US6571490B2 (en) 2000-03-16 2003-06-03 Nike, Inc. Bladder with multi-stage regionalized cushioning
US20030172549A1 (en) * 2000-10-06 2003-09-18 Vindriis Soren Shock absorbing and pressure reducing insole
US6722059B2 (en) 2001-10-25 2004-04-20 Acushnet Company Dynamic and static cushioning footbed
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US9839260B1 (en) * 2016-07-26 2017-12-12 Chi-Yuan Chang Pneumatic insole

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Cited By (116)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871117A (en) * 1973-04-17 1975-03-18 Rex E Richmond Fluid filled insoles
US3914881A (en) * 1975-02-03 1975-10-28 Rex Striegel Support pad
US3990457A (en) * 1975-08-14 1976-11-09 Curiel Products Corporation Podiatric insole
US4008530A (en) * 1976-01-05 1977-02-22 The Raymond Lee Organization, Inc. Inflatable sole shoe
US4217705A (en) * 1977-03-04 1980-08-19 Donzis Byron A Self-contained fluid pressure foot support device
US4100686A (en) * 1977-09-06 1978-07-18 Sgarlato Thomas E Shoe sole construction
WO1979000210A1 (en) * 1977-10-14 1979-04-19 American Pneumatics Co Self-contained fluid pressure foot support device
US4656760A (en) * 1985-02-26 1987-04-14 Kangaroos U.S.A., Inc. Cushioning and impact absorptive means for footwear
US4802289A (en) * 1987-03-25 1989-02-07 Hans Guldager Insole
US5987779A (en) * 1987-08-27 1999-11-23 Reebok International Ltd. Athletic shoe having inflatable bladder
US5150490A (en) * 1988-01-25 1992-09-29 Storopack Hans Reichenecker Gmbh & Co. Process for producing a resilient or padded insert for footwear
US5113599A (en) * 1989-02-08 1992-05-19 Reebok International Ltd. Athletic shoe having inflatable bladder
US5765298A (en) * 1989-03-17 1998-06-16 Nike, Inc. Athletic shoe with pressurized ankle collar
US4934072A (en) * 1989-04-14 1990-06-19 Wolverine World Wide, Inc. Fluid dynamic shoe
US6161240A (en) * 1990-02-26 2000-12-19 Huang; Ing-Jing Shock-absorbing cushion
US5669161A (en) * 1990-02-26 1997-09-23 Huang; Ing-Jing Shock-absorbing cushion
US5131174A (en) * 1990-08-27 1992-07-21 Alden Laboratories, Inc. Self-reinitializing padding device
WO1992003070A1 (en) * 1990-08-27 1992-03-05 Alden Laboratories, Inc. Self-reinitializing padding device
US5155927A (en) * 1991-02-20 1992-10-20 Asics Corporation Shoe comprising liquid cushioning element
EP0500247A3 (en) * 1991-02-20 1993-09-01 Asics Corporation A shoe
EP0500247A2 (en) * 1991-02-20 1992-08-26 Asics Corporation A shoe
US5493792A (en) * 1991-02-20 1996-02-27 Asics Corporation Shoe comprising liquid cushioning element
US5406719A (en) * 1991-11-01 1995-04-18 Nike, Inc. Shoe having adjustable cushioning system
US5313717A (en) * 1991-12-20 1994-05-24 Converse Inc. Reactive energy fluid filled apparatus providing cushioning, support, stability and a custom fit in a shoe
GB2263619A (en) * 1992-01-31 1993-08-04 Lake Jonathan Russell Curtis Shoe structure
US5625964A (en) * 1993-03-29 1997-05-06 Nike, Inc. Athletic shoe with rearfoot strike zone
US5425184A (en) * 1993-03-29 1995-06-20 Nike, Inc. Athletic shoe with rearfoot strike zone
US6055746A (en) * 1993-03-29 2000-05-02 Nike, Inc. Athletic shoe with rearfoot strike zone
US6092310A (en) * 1993-04-15 2000-07-25 Schoesler; Henning R. Fluid filled insole
US6178663B1 (en) 1993-04-15 2001-01-30 Henning R. Schoesler Fluid filled insole with metatarsal pad
US6138382A (en) * 1993-04-15 2000-10-31 Schoesler; Henning R. Fluid filled insole
US5878510A (en) * 1993-04-15 1999-03-09 Schoesler; Henning R. Fluid filled insole
US6463612B1 (en) 1993-07-23 2002-10-15 Nike, Inc. Bladder and method of making the same
US5595004A (en) * 1994-03-30 1997-01-21 Nike, Inc. Shoe sole including a peripherally-disposed cushioning bladder
US5987780A (en) * 1994-03-30 1999-11-23 Nike, Inc. Shoe sole including a peripherally-disposed cushioning bladder
US5955159A (en) * 1995-03-15 1999-09-21 Acushnet Company Conforming shoe construction using gels and method of making the same
US5985383A (en) * 1995-03-15 1999-11-16 Acushnet Company Conforming shoe construction and gel compositions therefor
US5827459A (en) * 1995-03-15 1998-10-27 Acushnet Company Conforming shoe construction using gels and method of making the same
WO1996028055A1 (en) * 1995-03-15 1996-09-19 Acushnet Company Conforming shoe construction and gel compositions therefor
WO1996037124A1 (en) * 1995-05-23 1996-11-28 Juergens Ute Multi-layer insole
FR2734473A1 (en) * 1995-05-27 1996-11-29 Saniwey Medizinische Lagerungs orthopedic Support
US5756195A (en) * 1995-06-07 1998-05-26 Acushnet Company Gel cushion conprising rubber polymer and oil
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