|Publication number||US3765422 A|
|Publication date||16 Oct 1973|
|Filing date||27 Dec 1971|
|Priority date||27 Dec 1971|
|Publication number||US 3765422 A, US 3765422A, US-A-3765422, US3765422 A, US3765422A|
|Original Assignee||Smith H|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (107), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
1 1 Oct. 16, 1973 Primary ExaminerAldrich F. Medbery Attorney-Conrad Christel et a1.
 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  Filed:
 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.
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.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1145533 *||6 Jul 1915||Arch-supporter.|
|US2477588 *||8 Feb 1946||2 Aug 1949||Dumm George H||Hydraulic insole|
|US2641066 *||5 Sep 1950||9 Jun 1953||Filardo Laurin||Metatarsal length compensating device|
|US3469576 *||5 Oct 1966||30 Sep 1969||Smith Henry M||Footwear|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3871117 *||17 Apr 1973||18 Mar 1975||Richmond Rex E||Fluid filled insoles|
|US3914881 *||3 Feb 1975||28 Oct 1975||Striegel Rex||Support pad|
|US3990457 *||14 Aug 1975||9 Nov 1976||Curiel Products Corporation||Podiatric insole|
|US4008530 *||5 Jan 1976||22 Feb 1977||The Raymond Lee Organization, Inc.||Inflatable sole shoe|
|US4100686 *||6 Sep 1977||18 Jul 1978||Sgarlato Thomas E||Shoe sole construction|
|US4217705 *||27 Jul 1978||19 Aug 1980||Donzis Byron A||Self-contained fluid pressure foot support device|
|US4656760 *||26 Feb 1985||14 Apr 1987||Kangaroos U.S.A., Inc.||Cushioning and impact absorptive means for footwear|
|US4802289 *||25 Mar 1987||7 Feb 1989||Hans Guldager||Insole|
|US4934072 *||14 Apr 1989||19 Jun 1990||Wolverine World Wide, Inc.||Fluid dynamic shoe|
|US5113599 *||27 Sep 1990||19 May 1992||Reebok International Ltd.||Athletic shoe having inflatable bladder|
|US5131174 *||27 Aug 1990||21 Jul 1992||Alden Laboratories, Inc.||Self-reinitializing padding device|
|US5150490 *||7 Jan 1989||29 Sep 1992||Storopack Hans Reichenecker Gmbh & Co.||Process for producing a resilient or padded insert for footwear|
|US5155927 *||20 Feb 1991||20 Oct 1992||Asics Corporation||Shoe comprising liquid cushioning element|
|US5313717 *||20 Dec 1991||24 May 1994||Converse Inc.||Reactive energy fluid filled apparatus providing cushioning, support, stability and a custom fit in a shoe|
|US5406719 *||8 Sep 1994||18 Apr 1995||Nike, Inc.||Shoe having adjustable cushioning system|
|US5425184 *||29 Mar 1993||20 Jun 1995||Nike, Inc.||Athletic shoe with rearfoot strike zone|
|US5493792 *||17 Oct 1994||27 Feb 1996||Asics Corporation||Shoe comprising liquid cushioning element|
|US5595004 *||30 Mar 1994||21 Jan 1997||Nike, Inc.||Shoe sole including a peripherally-disposed cushioning bladder|
|US5625964 *||7 Jun 1995||6 May 1997||Nike, Inc.||Athletic shoe with rearfoot strike zone|
|US5669161 *||15 Nov 1996||23 Sep 1997||Huang; Ing-Jing||Shock-absorbing cushion|
|US5756195 *||7 Jun 1995||26 May 1998||Acushnet Company||Gel cushion conprising rubber polymer and oil|
|US5765298 *||12 Mar 1993||16 Jun 1998||Nike, Inc.||Athletic shoe with pressurized ankle collar|
|US5766704 *||13 Mar 1996||16 Jun 1998||Acushnet Company||Conforming shoe construction and gel compositions therefor|
|US5827459 *||21 Feb 1996||27 Oct 1998||Acushnet Company||Conforming shoe construction using gels and method of making the same|
|US5878510 *||19 Jul 1996||9 Mar 1999||Schoesler; Henning R.||Fluid filled insole|
|US5939157 *||30 Oct 1995||17 Aug 1999||Acushnet Company||Conforming shoe construction using gels and method of making the same|
|US5955159 *||27 Oct 1995||21 Sep 1999||Acushnet Company||Conforming shoe construction using gels and method of making the same|
|US5985383 *||14 Mar 1996||16 Nov 1999||Acushnet Company||Conforming shoe construction and gel compositions therefor|
|US5987779 *||17 Apr 1996||23 Nov 1999||Reebok International Ltd.||Athletic shoe having inflatable bladder|
|US5987780 *||10 Jan 1997||23 Nov 1999||Nike, Inc.||Shoe sole including a peripherally-disposed cushioning bladder|
|US6026593 *||5 Dec 1997||22 Feb 2000||New Balance Athletic Shoe, Inc.||Shoe sole cushion|
|US6055746 *||5 May 1997||2 May 2000||Nike, Inc.||Athletic shoe with rearfoot strike zone|
|US6092310 *||8 Mar 1999||25 Jul 2000||Schoesler; Henning R.||Fluid filled insole|
|US6128837 *||16 Jun 1997||10 Oct 2000||Huang; Ing Jing||Three dimensional shoe vamp air cushion|
|US6138382 *||8 Mar 1999||31 Oct 2000||Schoesler; Henning R.||Fluid filled insole|
|US6161240 *||15 Jul 1997||19 Dec 2000||Huang; Ing-Jing||Shock-absorbing cushion|
|US6178663||8 Mar 1999||30 Jan 2001||Henning R. Schoesler||Fluid filled insole with metatarsal pad|
|US6253466||24 May 1999||3 Jul 2001||New Balance Athletic Shoe, Inc.||Shoe sloe cushion|
|US6374514||16 Mar 2000||23 Apr 2002||Nike, Inc.||Footwear having a bladder with support members|
|US6385864||16 Mar 2000||14 May 2002||Nike, Inc.||Footwear bladder with controlled flex tensile member|
|US6402879||16 Mar 2000||11 Jun 2002||Nike, Inc.||Method of making bladder with inverted edge seam|
|US6412194 *||4 Nov 1999||2 Jul 2002||Tamarack Habilitation Technologies, Inc.||Wax filled pads|
|US6457262||16 Mar 2000||1 Oct 2002||Nike, Inc.||Article of footwear with a motion control device|
|US6463612||28 Nov 2000||15 Oct 2002||Nike, Inc.||Bladder and method of making the same|
|US6571490||16 Mar 2000||3 Jun 2003||Nike, Inc.||Bladder with multi-stage regionalized cushioning|
|US6722059||25 Oct 2001||20 Apr 2004||Acushnet Company||Dynamic and static cushioning footbed|
|US6785985||2 Jul 2002||7 Sep 2004||Reebok International Ltd.||Shoe having an inflatable bladder|
|US6931764||4 Aug 2003||23 Aug 2005||Nike, Inc.||Footwear sole structure incorporating a cushioning component|
|US6971193||6 Mar 2002||6 Dec 2005||Nike, Inc.||Bladder with high pressure replenishment reservoir|
|US7000335||16 Jul 2003||21 Feb 2006||Nike, Inc.||Footwear with a sole structure incorporating a lobed fluid-filled chamber|
|US7013584||27 Sep 2001||21 Mar 2006||Vindriis Soeren||Shock absorbing and pressure reducing insole|
|US7086179||28 Jan 2004||8 Aug 2006||Nike, Inc.||Article of footwear having a fluid-filled bladder with a reinforcing structure|
|US7086180||28 Jan 2004||8 Aug 2006||Nike, Inc.||Article of footwear having a fluid-filled bladder with a reinforcing structure|
|US7100310||28 Jan 2004||5 Sep 2006||Nike, Inc.||Article of footwear having a fluid-filled bladder with a reinforcing structure|
|US7128796||16 Jul 2003||31 Oct 2006||Nike, Inc.||Footwear with a sole structure incorporating a lobed fluid-filled chamber|
|US7132032||24 Apr 2003||7 Nov 2006||Nike, Inc.||Bladder with multi-stage regionalized cushioning|
|US7141131||28 Jan 2004||28 Nov 2006||Nike, Inc.||Method of making article of footwear having a fluid-filled bladder with a reinforcing structure|
|US7156787||23 Dec 2003||2 Jan 2007||Nike, Inc.||Inflatable structure and method of manufacture|
|US7244483||29 May 2002||17 Jul 2007||Nike, Inc.||Bladder with inverted edge seam and method of making the bladder|
|US7401420||12 May 2006||22 Jul 2008||Nike, Inc.||Article of footwear having a fluid-filled bladder with a reinforcing structure|
|US7434339||15 Nov 2005||14 Oct 2008||Nike, Inc.||Footwear with a sole structure incorporating a lobed fluid-filled chamber|
|US7448522||11 Nov 2003||11 Nov 2008||Nike, Inc.||Fluid-filled bladder for use with strap|
|US7533477||3 Oct 2005||19 May 2009||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US7556846||28 Jan 2004||7 Jul 2009||Nike, Inc.||Fluid-filled bladder with a reinforcing structure|
|US7562469||14 Oct 2005||21 Jul 2009||Nike, Inc.||Footwear with fluid-filled bladder and a reinforcing structure|
|US7622014||1 Jul 2005||24 Nov 2009||Reebok International Ltd.||Method for manufacturing inflatable footwear or bladders for use in inflatable articles|
|US7707744||22 Aug 2006||4 May 2010||Nike, Inc.||Footwear with a sole structure incorporating a lobed fluid-filled chamber|
|US7707745||29 Dec 2006||4 May 2010||Nike, Inc.||Footwear with a sole structure incorporating a lobed fluid-filled chamber|
|US7721465||4 Jan 2008||25 May 2010||Reebok International Ltd.||Shoe having an inflatable bladder|
|US7735241||11 Jan 2006||15 Jun 2010||Reebok International, Ltd.||Shoe having an inflatable bladder|
|US7774955||17 Apr 2009||17 Aug 2010||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US7810255||6 Feb 2007||12 Oct 2010||Nike, Inc.||Interlocking fluid-filled chambers for an article of footwear|
|US7810256||17 Apr 2009||12 Oct 2010||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US7950169||10 May 2007||31 May 2011||Nike, Inc.||Contoured fluid-filled chamber|
|US8037623||29 Jun 2006||18 Oct 2011||Nike, Inc.||Article of footwear incorporating a fluid system|
|US8074378 *||15 Apr 2005||13 Dec 2011||Wu Yun-Foo||Shock absorbing device of an insole of a resilient shoe|
|US8151489||9 Apr 2010||10 Apr 2012||Reebok International Ltd.||Shoe having an inflatable bladder|
|US8302234||17 Apr 2009||6 Nov 2012||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US8302328||29 Jun 2010||6 Nov 2012||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US8308665||8 Mar 2004||13 Nov 2012||Trustees Of Boston University||Method and apparatus for improving human balance and gait and preventing foot injury|
|US8312643||28 Sep 2010||20 Nov 2012||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US8540838||23 Nov 2009||24 Sep 2013||Reebok International Limited||Method for manufacturing inflatable footwear or bladders for use in inflatable articles|
|US8572786||12 Oct 2010||5 Nov 2013||Reebok International Limited||Method for manufacturing inflatable bladders for use in footwear and other articles of manufacture|
|US8656608||13 Sep 2012||25 Feb 2014||Nike, Inc.||Article of footwear with a sole structure having fluid-filled support elements|
|US8657979||13 Apr 2007||25 Feb 2014||Nike, Inc.||Method of manufacturing a fluid-filled bladder with a reinforcing structure|
|US8671591 *||21 Feb 2011||18 Mar 2014||Brownmed, Inc.||Massaging footwear|
|US8677652||9 Mar 2012||25 Mar 2014||Reebok International Ltd.||Shoe having an inflatable bladder|
|US8911577||17 Feb 2011||16 Dec 2014||Nike, Inc.||Contoured fluid-filled chamber|
|US9161591 *||31 Dec 2011||20 Oct 2015||Alexander Landau||Autonomous balance-enhanced insert for footwear|
|US9320320||10 Jan 2014||26 Apr 2016||Harry A. Shamir||Exercise shoe|
|US9345286||31 Dec 2013||24 May 2016||Nike, Inc.||Contoured fluid-filled chamber|
|US9474323||12 Feb 2014||25 Oct 2016||Reebok International Limited||Shoe having an inflatable bladder|
|US20030172549 *||27 Sep 2001||18 Sep 2003||Vindriis Soren||Shock absorbing and pressure reducing insole|
|US20040173220 *||8 Mar 2004||9 Sep 2004||Harry Jason D.||Method and apparatus for improving human balance and gait and preventing foot injury|
|US20060048414 *||7 Jul 2004||9 Mar 2006||Takada Ken Ichi||Shoes|
|US20080028638 *||6 Apr 2007||7 Feb 2008||Kyomi Takano||Inner sole|
|US20080216349 *||15 Apr 2005||11 Sep 2008||Wu Yun-Foo||Shock Absorbing Device of an Insole of a Resilient Shoe|
|US20120167414 *||31 Dec 2011||5 Jul 2012||Ruth Shrairman||Autonomous balance-enhanced insert for footwear|
|US20120210602 *||21 Feb 2011||23 Aug 2012||Brown Medical Industries||Massaging footwear|
|US20140020264 *||17 Jul 2012||23 Jan 2014||Nike, Inc.||Article Of Footwear Having A Flexible Fluid-Filled Chamber|
|EP0500247A2 *||10 Feb 1992||26 Aug 1992||Asics Corporation||A shoe|
|WO1979000210A1 *||11 Oct 1978||19 Apr 1979||American Pneumatics Co||Self-contained fluid pressure foot support device|
|WO1992003070A1 *||27 Aug 1991||5 Mar 1992||Alden Laboratories, Inc.||Self-reinitializing padding device|
|WO1996028055A1 *||14 Mar 1996||19 Sep 1996||Acushnet Company||Conforming shoe construction and gel compositions therefor|
|WO1996037124A1 *||17 May 1996||28 Nov 1996||Juergens Ute||Multi-layer insole|
|WO1999029204A1 *||4 Dec 1998||17 Jun 1999||New Balance Athletic Shoe, Inc.||Shoe sole cushion|
|WO2001032043A1 *||1 Nov 2000||10 May 2001||Tamarack Habilitation Technologies, Inc.||Wax filled pads|
|U.S. Classification||36/153, 36/29, 36/28|
|International Classification||A43B17/03, A43B17/00|