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Publication numberUS3795994 A
Publication typeGrant
Publication dateMar 12, 1974
Filing dateMay 4, 1971
Priority dateMay 5, 1970
Also published asDE2121667A1
Publication numberUS 3795994 A, US 3795994A, US-A-3795994, US3795994 A, US3795994A
InventorsDall Ava Y
Original AssigneeDall Ava Y
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Air-cushion socks
US 3795994 A
Abstract
This sock is of the type described in the head patent i.e. arranged to constitute air cushions interposed between the wearer's foot and the boot.
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Description  (OCR text may contain errors)

[ AIR-CUSHION SOCKS Y van Dall Ava, 54 C ite Belle Ma sl B2 119. B 99.

[22] Filed: May 4, 1971 [2l] Appl. No.: 140,132

[76] Inventor:

[ Mar. 12, 1974 Primary Examiner -Patrick D. Lawson Attorney, Age'n't, 0r FirmEdward F. Levy I ABSTRACT This sock is of the type described in the head patent i.e. arranged to constitute air cushions interposed bemanufactured [30] Foreign Application Priority Data tween the wearers foot and the boot.

May 5, 1970 France 70.16269 It consists of a thin, flexible and air-impervious Apr.26, 1971 France .Q 71.14749 envelope divided longitudinally into a number, for example five, of internal, air-tight compartments of [52] US. Cl. 36/29 relatively great dimensions, each of them forming an [51 Int. Cl A43b 13/20 air cushion, since air is contained in each of them, this Field Of Search 3, 3 R, 3 3 B air being adapted to flow from one compartment to another through throttling passages. [56] References Cited These socks can easy by the UNITED STATES PATENTS commercially scale, in a trouble-free manner, and are 2,007,803 7/1935 Kelly 36/29 adapted to prove entirely satisfactory to the wearer. 1,304,915 5/1919 Spinney 36/29 2,080,469 5 1937 Gilbert 36/29 1 Claim, 12 Drawlng Flgul'es '1 7 1 1 (i 10 5 4 9 .5 -L fi ti *1 1L L i i PATENTEDMAR 1 2 mm 3.795994 SHEET 2 [IF 2 AIR-CUSHION SOCKS SUMMARY OF THE INVENTION The present invention relates in general to socks, that is, complementary inner soles utilized sometimes in boots, shoes and other footwears for modifying or rendering more comfortable these boots or the like, and more particularly to an improved sock of this type, characterized in that it consists of a relatively thin envelope of flexible, air impervious material, divided in the longitudinal direction into a plurality of air-tight compartments, for example five in number of relatively large dimensions and forming each an air cushion, since each compartment is filled with air adapted, if desired, to flow from one compartment to another through a relatively narrow or throttled passage adapted to retard this flow.

According to a preferred form of embodiment of this invention the air-cushion sock constituting the subjectmatter thereof comprises two relatively thin superposed sheets of p.v.c. or other suitable heat-weldable resin materials, these sheets being die-cut to the desired shape and welded along their edges to form the afore said separate compartments each containing a sufficient quantity of air.

These two thin superposed sheets of resin material may be obtained from two separate webs or from a single but tubular piece of extruded material; in the last case the transverse weld seams assembling the two sheets may be formed directly during the extrusion process.

Flat sheets may be used as such; in certain cases, one or both of a pair of thin, air-impervious sheets may be heat-shaped in such a manner that each compartment may have the same thickness along its edge and in it central portion.

If desired, means may be implemented for causing the air pressure to differ from one compartment to another, so that each compartment be inflated at the pressure best suited to the weight to be supported during the actual use of the sock. This result may be obtained directly from the welding operation by simply causing these two sheets to adhere, for example by suction, to patterns or forms having the desired contour, except ofcourse along the weld seams; thus by properly selecting the curvature of these patterns or forms, it is possible to, adjust with a high degree of precision the pressure values obtained in the various compartments.

BRIEF DESCRIPTION OF THE DRAWING The attached drawing illustrates diagrammatically by way of example several forms or embodiment of the present invention. In the drawing:

FIG. 1 is a perspective view of a sock;

FIG-S. 2, 3 and 4 are longitudinal sections showing FIG. 9 is a plane view showing a modified form of embodiment of one of the sheets constituting a sock according to this invention;

FIGS. 10 and I] are sections taken along the lines X-X and XXl of FIG. 9, respectively, and

FIG. 12 is a fragmentary perspective view showing on a larger scale the sock illustrated in the preceding FIGS. 9 and 10.

DESCRIPTION OF THE PREFERRED EMBODIMENT The sock shown in the various figures of the drawing comprises essentially two relatively thin sheets 1, 2 of a flexible, air-impervious material, such as p.v.c., these sheets being welded along their peripheral edge 3 and also along transverse lines 4, 5, 6 and 7 to form air-tight compartments 8, 9, 10, 11 and 12 filled with air so as to have a certain thickness.

As shown in FIG. 3, the quantity of air contained in each compartment may differ, according to the weight to be supported thereby and also to the particular contour of the wearers foot.

This result may be obtained very easily by welding the two sheets 1, 2 along their edges 3 and along transverse lines 4 to 7 while these sheets are caused to adhere by suction, except of course along the weld seams or lines, against registering surfaces of a pair of forms or patterns leaving therebetween a more or less considerable free space for the air.

Instead of being formed from two separate sheets 1 and 2 as described hereinabove, the flexible and airimpervious envelope constituting the sock according to this invention may be obtained from a tubular blank or web 13 in which the compartments are formed either by means of the transverse weld seams or lines 4 to 7, as in the preceding case, or by means of integral joints 14, 15, 16 and 17 formed directly during the extrusion process.

In certain cases these sheets 1 and 2 of flexible, airimpervious material may be lined with a relatively thin sheet of foam l8, 19 in which air is retained (closedcell foam structure), as shown in FIG. 5.

As in the preceding case and as illustrated in FIG. 6, these two sheets are welded together along their edges and also along transverse lines 20, unless these transverse lines are obtained directly by extrusion in the form of a small partition 21 interconnecting the sheets.

In certain casesthe sock may be reinforced by providing a stiff edge 22 along the more strained side, that is, as a rule, the outer side.

According to a modified form of embodiment illustrated in FIGS. 9 to 12 the sheets of thin flexible, airimpervious material may be heat-shaped to comprises a number of separate longitudinal compartments 24 between which a double partition 25, 26 is formed to an inverted U configuration, as shown, in the case of the lower sheet, and comprises a marginal flange 27 coplamar with the top or upper face 28 of these double partitions 25, 26; small passages 29 may be provided in the partitions to permit the flow of air from one compartment to another with a sufficient throttling effect.

A longitudinal partition may also be provided, if desired, this longitudinal partion consisting similarly of two sheets 30 and 31, with a top face 32 level with the other top faces 28 of the aforesaid transverse partitions and also with the flange 27 of the sock; this longitudinal partition may also comprise small throttling passages 33 interconnecting a pair of transversely aligned compartments.

The assembly is closed and sealed by simply superposting thereto a thin sheet 34 of flexible and air-tight material welded along the flanges 27 of the sock and also to the top faces 28 and 32 of the transverse partitions and possibly of the longitudinal partition.

Of course, the specific forms of embodiment of the invention illustrated in the drawing and described in detail hereinabove should not be construed as limiting the scope of the invention since various modifications may be brought thereto without departing from the basic principles thereof as set forth in the appended claims.

Thus, notably, it may be advantageous to use a sock of the type set forth by completing same with another inner sole adapted on the one hand to isolate the wearers foot from the flexible and air-tight material constituting said sock, an on the other hand to'ensure a better distribution of the foot pressure over the entire surface of the sock; thus, an inner sole of the type described and illustrated in the French Pat. No. 1.426.837 of its Certificate of Addition No. 91.180 may advantageously be used, this second sole being cemented to, or simply laid on the first one.

What is claimed is:

1. A sock comprising a thin envelope of flexible, airimpervious material, divided longitudinally into a plurality of internal fluid-tight compartments of relatively large dimensions, each compartment containing air and forming an air cushion, said envelope being sized to extend beneath the full length of a foot with each compartment producing an individual damping action when aload is applied thereto, a different air pressure being obtained in each one of said compartments in order better to adapt each of them to the load to be applied thereto.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1304915 *Jul 31, 1918May 27, 1919Burton A SpinneyPneumatic insole.
US2007803 *May 10, 1934Jul 9, 1935Patrick KellyFilling nipple and stopper therefor
US2080469 *May 17, 1933May 18, 1937Gilbert Levi LPneumatic foot support
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3914881 *Feb 3, 1975Oct 28, 1975Striegel RexSupport pad
US4115934 *Feb 11, 1977Sep 26, 1978Hall John MLiquid shoe innersole
US4123855 *Aug 10, 1977Nov 7, 1978Thedford Shirley CFluid filled insole
US4129951 *Apr 20, 1976Dec 19, 1978Charles PetroskyAir cushion shoe base
US4229889 *Jun 6, 1978Oct 28, 1980Charles PetroskyPressurized porous material cushion shoe base
US4446634 *Sep 28, 1982May 8, 1984Johnson Paul HFootwear having improved shock absorption
US4458430 *Mar 30, 1982Jul 10, 1984Peterson Lars G BShoe sole construction
US4567677 *Aug 29, 1984Feb 4, 1986Pittsburgh Plastics ManufacturingWater filled shoe insole
US4768295 *Nov 16, 1987Sep 6, 1988Asics CorporationSole
US5067255 *Dec 4, 1990Nov 26, 1991Hutcheson Robert ECushioning impact structure for footwear
US5097607 *May 7, 1990Mar 24, 1992Wolverine World Wide, Inc.Fluid forefoot footware
US5113599 *Sep 27, 1990May 19, 1992Reebok International Ltd.Athletic shoe having inflatable bladder
US5313717 *Dec 20, 1991May 24, 1994Converse Inc.Reactive energy fluid filled apparatus providing cushioning, support, stability and a custom fit in a shoe
US5353459 *Sep 1, 1993Oct 11, 1994Nike, Inc.Method for inflating a bladder
US5365678 *Apr 22, 1993Nov 22, 1994Kabushiki Kaisha HimikoMid-sole or sole of shoes
US5669161 *Nov 15, 1996Sep 23, 1997Huang; Ing-JingShock-absorbing cushion
US5704137 *Dec 22, 1995Jan 6, 1998Brooks Sports, Inc.Shoe having hydrodynamic pad
US5753061 *Jun 5, 1995May 19, 1998Robert C. BogertMulti-celled cushion and method of its manufacture
US5878510 *Jul 19, 1996Mar 9, 1999Schoesler; Henning R.Fluid filled insole
US5916664 *Jun 24, 1996Jun 29, 1999Robert C. BogartElastomeric cushioning device used in footwear, helmets, tennis racquet handles, gloves, bicycle seats
US5987779 *Apr 17, 1996Nov 23, 1999Reebok International Ltd.Athletic shoe having inflatable bladder
US6009637 *Mar 2, 1998Jan 4, 2000Pavone; Luigi AlessioHelium footwear sole
US6092310 *Mar 8, 1999Jul 25, 2000Schoesler; Henning R.Fluid filled insole
US6128837 *Jun 16, 1997Oct 10, 2000Huang; Ing JingThree dimensional shoe vamp air cushion
US6138382 *Mar 8, 1999Oct 31, 2000Schoesler; Henning R.Fluid filled insole
US6161240 *Jul 15, 1997Dec 19, 2000Huang; Ing-JingShock-absorbing cushion
US6178663Mar 8, 1999Jan 30, 2001Henning R. SchoeslerFluid filled insole with metatarsal pad
US6275997Apr 20, 2000Aug 21, 2001Vikki RichardsonGel-cushion socks
US6457262 *Mar 16, 2000Oct 1, 2002Nike, Inc.Article of footwear with a motion control device
US6463612 *Nov 28, 2000Oct 15, 2002Nike, Inc.Bladder and method of making the same
US7383648Feb 23, 2005Jun 10, 2008Reebok International Ltd.Inflatable support system for an article of footwear
US7448150Feb 28, 2005Nov 11, 2008Reebok International Ltd.Insert with variable cushioning and support and article of footwear containing same
US7600331May 19, 2008Oct 13, 2009Reebok International Ltd.Inflatable support system for an article of footwear
US7930839Oct 7, 2009Apr 26, 2011Reebok International Ltd.Inflatable support system for an article of footwear
US8316752 *Jul 31, 2003Nov 27, 2012Blastgard Technologies, Inc.Acoustic shock wave attenuating assembly
US20130247422 *Mar 23, 2012Sep 26, 2013Nike, Inc.Article Of Footwear Having A Sole Structure With A Fluid-Filled Chamber
CN100477932CDec 15, 2006Apr 15, 2009捷盈实业股份有限公司Preparing method of elastic air cushion socks
DE3221680A1 *Jun 8, 1982Jan 20, 1983Bengt HanssonHeat-generating sole
WO1989006500A1 *Jan 19, 1988Jul 27, 1989Cellastic AsFootwear sole
Classifications
U.S. Classification36/29
International ClassificationA43B13/16, A43B17/03, A43B13/14, A43B17/00
Cooperative ClassificationA43B17/03, A43B13/16
European ClassificationA43B17/03, A43B13/16