US20030126760A1 - Shock resistant shoe - Google Patents
Shock resistant shoe Download PDFInfo
- Publication number
- US20030126760A1 US20030126760A1 US10/335,797 US33579703A US2003126760A1 US 20030126760 A1 US20030126760 A1 US 20030126760A1 US 33579703 A US33579703 A US 33579703A US 2003126760 A1 US2003126760 A1 US 2003126760A1
- Authority
- US
- United States
- Prior art keywords
- sole
- terminal end
- cone spring
- diameter terminal
- spring
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/1425—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the ball of the foot, i.e. the joint between the first metatarsal and first phalange
-
- 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
- A43B13/181—Resiliency achieved by the structure of the sole
- A43B13/182—Helicoidal springs
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- 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
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
- A43B21/30—Heels with metal springs
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/144—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the heel, i.e. the calcaneus bone
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
- A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
- A43B7/1415—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
- A43B7/1445—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot situated under the midfoot, i.e. the second, third or fourth metatarsal
Definitions
- the foot In most running, walking, and jumping events, the foot follows a prescribed set of motions. The heel impacts the ground first, the weight then shifts forward onto the ball of the foot in a rolling manner, and the toe region provides the last contact with the ground. It is desirable to absorb as much of the impact energy from the both the heel and ball areas of the foot during a foot strike, while still providing a stable landing and not slowing down the user.
- the present invention features a spring cushioned shoe with at least one cone spring disposed within the sole of the shoe.
- the cone spring includes a large diameter end and an opposing small diameter end.
- the cone spring is positioned in an “inverse orientation,” wherein the large diameter end is disposed above the small diameter end.
- the small diameter end faces downward, toward the outer sole of the shoe, so that the spring returns energy to the user in a manner consistent with the rolling motion of the foot during a foot strike.
- FIG. 1 is a cross sectional side view of a shoe midsole assembly having cone springs disposed within the heel and ball areas of the assembly.
- FIG. 2 is a plan view of an alternative embodiment of the present invention.
- a midsole assembly 2 includes first and second surfaces 22 and 26 , respectively, positioned such that first surface 22 can be adhesively attached to an ordinary outer sole 24 .
- the second surface 26 is designed to attach adhesively to inner sole 25 .
- Inner sole 25 provides contact area 28 for an upper shoe portion (not shown) to be attached to midsole 2 .
- Midsole 2 contains vacuities 10 and 12 positioned in the heel and ball areas of midsole 2 , respectively. Vacuities 10 and 12 communicate with each other by way of fluid flow pathway 18 , which allows the free flow of fluid there between, as described in the co-pending U.S. patent application assigned Ser. No. 09/982,520, which is incorporated herein by reference. Alternatively, the vacuities 10 and 12 and the pathway 18 may be filled, either partially or completely, with a low density, polymeric foam to encapsulate the spring mechanisms described more fully hereinafter.
- a first cone spring 8 is positioned in the heel vacuity 10 of midsole 2 .
- Cone spring 8 has a large diameter terminal end 17 , and a small diameter terminal end 19 ; the large diameter terminal end 17 faces downward, toward the outer sole 24 , and the small diameter terminal end 19 faces upward, towards inner sole 25 .
- Terminal end 17 is in mechanical contact with plate 16 , to resist lateral movement relative to the plate 16 , as by welding, adhesive, virtual interference, engagement in a slot defined in the plate 16 or physical attachment, for example.
- the small diameter terminal end 19 is firmly attached to a first surface plate 6 , to resist lateral movement relative to the plate 6 , as by welding, adhesive, virtual interference, engagement in a slot defined in the plate 6 or physical attachment, for example.
- a textured face of the plate 16 is held in adhesive contact with a lower surface 10 a of vacuity 10 .
- Plate 6 is in mechanical contact with the upper surface 10 b of the vacuity 10 .
- a spring compression limiter 30 is attached to the axial center of plate 6 , in a vertical orientation, to prevent the full compression of cone spring 8 during use.
- Plates 6 and 16 are constructed of sheet metallic material, but could also be made from various other metal or non-metallic materials.
- the spring compression limiter 30 is made of, e.g., a polymeric material.
- a second cone spring 9 is positioned in ball vacuity 12 of midsole 2 .
- cone spring 9 has a large diameter terminal end 23 and a small diameter terminal end 21 .
- spring 9 is positioned within the ball vacuity such that the large diameter end 23 faces upward, toward inner sole 25 , and the smaller diameter end 21 faces downward, toward outer sole 24 .
- the second cone spring 9 is positioned between plates 13 and 14 in the ball vacuity 12 .
- a first face of plate 13 is adhesively attached to surface 12 a of vacuity 12
- the second face of plate 13 is attached to the small diameter end 21 of spring 9 by a mechanical fixture, or, alternatively, by adhesion.
- Plate 14 is attached, at one face, to the large diameter end 23 of coil spring 9 , and is attached adhesively at its opposite face to inner sole 25 .
- the ball vacuity also includes a compression limiter 30 , as described above in connection with heel vacuity 10 .
- Positioning the ball area cone spring 9 in this “inverse” orientation takes into account the rolling motion of the ball portion of the foot during a foot strike.
- This inverse orientation allows the outer sole, as it rolls over the ball of the foot, to pivot over a smaller surface of spring. As a result, the spring 9 returns force to the user over a greater portion of the ball strike, and therefore returns a greater percentage of the impact energy to the user.
- the cone springs 8 and 9 are both multi-turn coil springs, having a large diameter terminal end and a small diameter terminal end, as described above and as shown in FIG. 1.
- the springs 8 and 9 taper evenly from the large diameter ends to the small diameter ends.
- the springs can be made from metal, or various non-metallic polymeric materials.
- both the heel and ball area cone springs could be disposed in the “inverse orientation,” with the small diameter end facing downward, as shown above for cone spring 9 .
- the cone springs 8 and 9 need not have a conical shape. So long as the springs have a small diameter end and an opposing large diameter end, the spring need not taper evenly from the large end to the small end. For example, the diameter might remain constant for a portion near the large diameter end, and then taper to the small diameter end. Alternatively, the spring may bulge in the middle section.
- a wave spring 34 may be placed in the heel vacuity 10 instead of a cone spring.
- Such an embodiment includes a wave spring in the heel area, as described, e.g., in U.S. Pat. No. 6,282,814, and at least one inversely oriented cone spring 9 in the ball area, as described above.
- the heel vacuity 10 may include multiple wave springs, multiple cone springs, or a combination of wave springs and cone springs.
- ball vacuity 12 may include multiple inversely oriented cone springs, or a combination of wave springs and inversely oriented cone springs.
- the multiple heel and ball springs may be disposed within multiple heel and ball vacuities.
- the springs may be disposed within the heel and ball vacuities using, e.g., countersunk volumes and shim ends, as described in U.S. Pat. No. 6,282,814.
Abstract
A sole assembly for a shock resistant shoe includes a sole having a heel region and a ball region. A first cone spring, disposed within the sole, includes a large diameter terminal end and an opposing small diameter terminal end. The large diameter terminal end is disposed above the small diameter terminal end.
Description
- Pursuant to 35 USC Section 119, this application claims the benefit of priority from Provisional Application Serial No. 60/345,667 with a filing date of Jan. 4, 2002.
- Not Applicable
- 1. Field of Invention
- In most running, walking, and jumping activities, the return force resulting from foot strikes causes great shock to the body. Repeated foot strikes place great stress on joints and bones, and can cause injuries to the lower back and the rotating joints of the legs. To minimize injury to the body resulting from repeated foot strikes, and also to improve athletic performance, shoe engineers have designed various spring-cushioned shoes. The springs in spring-cushioned shoes are designed to reduce shock to the body during a foot strike, and also to recover and return impact energy to the user.
- One type of spring-cushioned shoe is described in U.S. Pat. No. 6,282,814 to Krafsur et al., which is incorporated herein by reference.
- In most running, walking, and jumping events, the foot follows a prescribed set of motions. The heel impacts the ground first, the weight then shifts forward onto the ball of the foot in a rolling manner, and the toe region provides the last contact with the ground. It is desirable to absorb as much of the impact energy from the both the heel and ball areas of the foot during a foot strike, while still providing a stable landing and not slowing down the user.
- In one aspect, the present invention features a spring cushioned shoe with at least one cone spring disposed within the sole of the shoe. The cone spring includes a large diameter end and an opposing small diameter end. The cone spring is positioned in an “inverse orientation,” wherein the large diameter end is disposed above the small diameter end. The small diameter end faces downward, toward the outer sole of the shoe, so that the spring returns energy to the user in a manner consistent with the rolling motion of the foot during a foot strike.
- The above-mentioned features of the invention will become more clearly understood from the following detailed description of the invention read together with the drawings in which:
- FIG. 1 is a cross sectional side view of a shoe midsole assembly having cone springs disposed within the heel and ball areas of the assembly.
- FIG. 2 is a plan view of an alternative embodiment of the present invention.
- An embodiment of the present invention will be described below with reference to the accompanying figure.
- Referring to FIG. 1, a
midsole assembly 2 includes first andsecond surfaces first surface 22 can be adhesively attached to an ordinaryouter sole 24. Thesecond surface 26 is designed to attach adhesively to inner sole 25.Inner sole 25 providescontact area 28 for an upper shoe portion (not shown) to be attached tomidsole 2. - Midsole2 contains
vacuities midsole 2, respectively.Vacuities vacuities - A
first cone spring 8 is positioned in theheel vacuity 10 ofmidsole 2.Cone spring 8 has a large diameter terminal end 17, and a smalldiameter terminal end 19; the large diameter terminal end 17 faces downward, toward theouter sole 24, and the smalldiameter terminal end 19 faces upward, towardsinner sole 25. Terminal end 17 is in mechanical contact withplate 16, to resist lateral movement relative to theplate 16, as by welding, adhesive, virtual interference, engagement in a slot defined in theplate 16 or physical attachment, for example. The smalldiameter terminal end 19 is firmly attached to afirst surface plate 6, to resist lateral movement relative to theplate 6, as by welding, adhesive, virtual interference, engagement in a slot defined in theplate 6 or physical attachment, for example. A textured face of theplate 16 is held in adhesive contact with alower surface 10 a ofvacuity 10.Plate 6 is in mechanical contact with theupper surface 10 b of thevacuity 10. Aspring compression limiter 30 is attached to the axial center ofplate 6, in a vertical orientation, to prevent the full compression ofcone spring 8 during use. -
Plates spring compression limiter 30 is made of, e.g., a polymeric material. - A
second cone spring 9 is positioned inball vacuity 12 ofmidsole 2. Likecone spring 8,cone spring 9 has a large diameter terminal end 23 and a smalldiameter terminal end 21. Unlikespring 8,spring 9 is positioned within the ball vacuity such that the large diameter end 23 faces upward, toward inner sole 25, and thesmaller diameter end 21 faces downward, towardouter sole 24. - The
second cone spring 9 is positioned betweenplates ball vacuity 12. A first face ofplate 13 is adhesively attached tosurface 12 a ofvacuity 12, and the second face ofplate 13 is attached to thesmall diameter end 21 ofspring 9 by a mechanical fixture, or, alternatively, by adhesion.Plate 14 is attached, at one face, to the large diameter end 23 ofcoil spring 9, and is attached adhesively at its opposite face toinner sole 25. The ball vacuity also includes acompression limiter 30, as described above in connection withheel vacuity 10. - Positioning the ball
area cone spring 9 in this “inverse” orientation takes into account the rolling motion of the ball portion of the foot during a foot strike. This inverse orientation allows the outer sole, as it rolls over the ball of the foot, to pivot over a smaller surface of spring. As a result, thespring 9 returns force to the user over a greater portion of the ball strike, and therefore returns a greater percentage of the impact energy to the user. - The
cone springs springs - Other embodiments are also possible. For example, both the heel and ball area cone springs could be disposed in the “inverse orientation,” with the small diameter end facing downward, as shown above for
cone spring 9. - The
cone springs - As depicted in FIG. 2, a
wave spring 34 may be placed in theheel vacuity 10 instead of a cone spring. Such an embodiment includes a wave spring in the heel area, as described, e.g., in U.S. Pat. No. 6,282,814, and at least one inversely orientedcone spring 9 in the ball area, as described above. - Multiple springs may be included in each vacuity. For example, the
heel vacuity 10 may include multiple wave springs, multiple cone springs, or a combination of wave springs and cone springs. Similarly,ball vacuity 12 may include multiple inversely oriented cone springs, or a combination of wave springs and inversely oriented cone springs. Alternatively, the multiple heel and ball springs may be disposed within multiple heel and ball vacuities. - The springs may be disposed within the heel and ball vacuities using, e.g., countersunk volumes and shim ends, as described in U.S. Pat. No. 6,282,814.
- From the foregoing description, it will be recognized by those skilled in the art that an improved sole assembly has been provided.
- While the present invention has been illustrated by description of several embodiments and while the illustrative embodiment has been described in considerable detail, it is not the intention of the applicant to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of applicant's general inventive concept.
Claims (12)
1. A sole assembly for an article of footwear comprising:
a sole having a heel region and a ball region;
a first cone spring disposed within the sole, said first cone spring including a large diameter terminal end and an opposing small diameter terminal end, said large diameter terminal end being disposed above said small diameter terminal end.
2. A sole assembly in accordance with claim 1 wherein said cone spring is located in said ball region of said sole.
3. A sole assembly in accordance with claim 2 and further comprising a wave spring located in said heel region of said sole.
4. A sole assembly in accordance with claim 1 wherein said sole defines a first vacuity and said first cone spring is disposed within the first vacuity.
5. A sole assembly in accordance with claim 1 wherein said cone spring is at least partially encapsulated in low density foam.
6. A sole assembly in accordance with claim 1 wherein said first cone spring is located in said heel region of said sole.
7. A sole assembly in accordance with claim 1 wherein said first cone spring defines a cylindrical axis substantially perpendicular to said sole.
8. A sole assembly in accordance with claim 1 and further comprising a second cone spring disposed within the sole, said second cone spring including a large diameter terminal end and an opposing small diameter terminal end, said large diameter terminal end being disposed below said small diameter terminal end.
9. A sole assembly in accordance with claim 8 wherein said second cone spring is located in said heel region of said sole.
10. A sole assembly in accordance with claim 8 wherein said sole defines a second vacuity and said second cone spring is disposed within the second vacuity.
11. A sole assembly in accordance with claim 8 wherein said first cone spring defines a cylindrical axis substantially perpendicular to said sole.
12. A sole assembly for an article of footwear comprising:
a sole having a heel region and a ball region;
at least one cone spring disposed within the sole, said cone spring including a large diameter terminal end and an opposing small diameter terminal end, said large diameter terminal end being disposed above said small diameter terminal end.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/335,797 US20030126760A1 (en) | 2002-01-04 | 2003-01-02 | Shock resistant shoe |
AU2003201823A AU2003201823A1 (en) | 2002-01-04 | 2003-01-03 | Shock resistant shoe |
PCT/US2003/000204 WO2003056963A1 (en) | 2002-01-04 | 2003-01-03 | Shock resistant shoe |
US11/174,021 US7441347B2 (en) | 2003-01-02 | 2005-07-01 | Shock resistant shoe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34566702P | 2002-01-04 | 2002-01-04 | |
US10/335,797 US20030126760A1 (en) | 2002-01-04 | 2003-01-02 | Shock resistant shoe |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/174,021 Continuation-In-Part US7441347B2 (en) | 2003-01-02 | 2005-07-01 | Shock resistant shoe |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030126760A1 true US20030126760A1 (en) | 2003-07-10 |
Family
ID=26989895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/335,797 Abandoned US20030126760A1 (en) | 2002-01-04 | 2003-01-02 | Shock resistant shoe |
Country Status (3)
Country | Link |
---|---|
US (1) | US20030126760A1 (en) |
AU (1) | AU2003201823A1 (en) |
WO (1) | WO2003056963A1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030217483A1 (en) * | 2002-05-24 | 2003-11-27 | Abraham Carl J. | Enhanced impact and energy absorbing product for footwear, protective equipment, floors, boards, walls, and other surfaces |
US20060042122A1 (en) * | 2004-08-24 | 2006-03-02 | Teng-Jen Yang | Heel cushion structure for a sneaker |
US20060213082A1 (en) * | 2005-03-23 | 2006-09-28 | Meschan David F | Athletic shoe with removable resilient element |
US20080005928A1 (en) * | 2004-07-12 | 2008-01-10 | Istvan Koszegi | Structure for the Flexible Damping of Dynamic Effects on a Body, and a Damping Member |
US20080016720A1 (en) * | 2006-07-21 | 2008-01-24 | Nike, Inc. | Impact-attenuation systems for articles of footwear and other foot-receiving devices |
US20080184596A1 (en) * | 2007-02-07 | 2008-08-07 | Chun Ho Yu | Energy Recycling Footwear |
US20090064536A1 (en) * | 2007-09-06 | 2009-03-12 | Klassen James B | Energy storage and return spring |
US20090282697A1 (en) * | 2008-05-19 | 2009-11-19 | Z-Coil Ltd. | Footwear sole |
US20100199517A1 (en) * | 2009-02-11 | 2010-08-12 | Francis Edward Levert | Cushioning apparatus for ambulatory use |
US20100257753A1 (en) * | 2009-04-10 | 2010-10-14 | Athletic Propulsion Labs, LLC | Forefoot catapult for athletic shoes |
US20100257752A1 (en) * | 2009-04-10 | 2010-10-14 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US20110023328A1 (en) * | 2009-07-28 | 2011-02-03 | Mauro Testa | Sport footwear |
US20110308105A1 (en) * | 2010-02-05 | 2011-12-22 | Mark Rudolfovich Shirokikh | Gravity footwear and spring unit |
US20120167415A1 (en) * | 2004-09-27 | 2012-07-05 | Nike, Inc. | Impact-Attenuation Members and Products Containing Such Members |
US8720085B2 (en) | 2004-09-27 | 2014-05-13 | Nike, Inc. | Impact attenuating and spring elements and products containing such elements |
US8752306B2 (en) | 2009-04-10 | 2014-06-17 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US20140290098A1 (en) * | 2013-03-26 | 2014-10-02 | Wolverine World Wide, Inc. | Sole assembly for article of footwear |
US9500245B2 (en) | 2009-06-22 | 2016-11-22 | Powerdisk Development Ltd. | Springs for shoes |
US11484092B2 (en) | 2020-07-15 | 2022-11-01 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11576465B2 (en) | 2021-05-18 | 2023-02-14 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
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US2437227A (en) * | 1947-03-05 | 1948-03-02 | Hall Manville | Cushioned shoe sole |
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US2669038A (en) * | 1951-11-19 | 1954-02-16 | Werth Robert De | Shock absorbing shoe heel |
US2720041A (en) * | 1953-03-31 | 1955-10-11 | Kajtar Kalman | Footwear with provision to change the air therein |
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US6006449A (en) * | 1998-01-29 | 1999-12-28 | Precision Products Group, Inc. | Footwear having spring assemblies in the soles thereof |
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US6393731B1 (en) * | 2001-06-04 | 2002-05-28 | Vonter Moua | Impact absorber for a shoe |
US6665957B2 (en) * | 2000-10-19 | 2003-12-23 | Shoe Spring, Inc. | Fluid flow system for spring-cushioned shoe |
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JPH04503614A (en) * | 1988-12-14 | 1992-07-02 | アビア グループ インターナショナル,インコーポレイテッド | Inserts for athletic shoes |
-
2003
- 2003-01-02 US US10/335,797 patent/US20030126760A1/en not_active Abandoned
- 2003-01-03 WO PCT/US2003/000204 patent/WO2003056963A1/en not_active Application Discontinuation
- 2003-01-03 AU AU2003201823A patent/AU2003201823A1/en not_active Abandoned
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US507490A (en) * | 1893-10-24 | Insole | ||
US733167A (en) * | 1902-09-08 | 1903-07-07 | John H Denton | Heel-cushion and ventilator for shoes. |
US1380879A (en) * | 1913-05-19 | 1921-06-07 | Young Carl | Shoe |
US1502087A (en) * | 1924-02-08 | 1924-07-22 | Bunns Julius | Boot or shoe |
US2157912A (en) * | 1937-10-29 | 1939-05-09 | Nabokin Jacob | Heel cushion |
US2299009A (en) * | 1941-08-09 | 1942-10-13 | Albert J Denk | Cushioned heel |
US2441039A (en) * | 1946-11-08 | 1948-05-04 | Herbert H Smith | Spring heel for footwear |
US2437227A (en) * | 1947-03-05 | 1948-03-02 | Hall Manville | Cushioned shoe sole |
US2668374A (en) * | 1951-03-14 | 1954-02-09 | Seigle William | Spring cushioning insole |
US2669038A (en) * | 1951-11-19 | 1954-02-16 | Werth Robert De | Shock absorbing shoe heel |
US2720041A (en) * | 1953-03-31 | 1955-10-11 | Kajtar Kalman | Footwear with provision to change the air therein |
US4267648A (en) * | 1979-09-19 | 1981-05-19 | Weisz Vera C | Shoe sole with low profile integral spring system |
US4457084A (en) * | 1981-04-08 | 1984-07-03 | Hiroshi Horibata | Hopping and dancing shoes |
US4901987A (en) * | 1988-05-03 | 1990-02-20 | Smalley Steel Ring Company | Crest-to-crest compression spring with circular flat shim ends |
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Legal Events
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AS | Assignment |
Owner name: SHOE SPRING, INC., TENNESSEE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEVERT, FRANCIS E.;KRAFSUR, DAVID;REEL/FRAME:013638/0895 Effective date: 20030102 |
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