US20080209762A1 - Spring cushioned shoe - Google Patents

Spring cushioned shoe Download PDF

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Publication number
US20080209762A1
US20080209762A1 US12/011,095 US1109508A US2008209762A1 US 20080209762 A1 US20080209762 A1 US 20080209762A1 US 1109508 A US1109508 A US 1109508A US 2008209762 A1 US2008209762 A1 US 2008209762A1
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United States
Prior art keywords
spring
shoe
vacuity
sole
encapsulating
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
Application number
US12/011,095
Inventor
Andrew B. Krafsur
Original Assignee
Krafsur Andrew B
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
Priority to US89760507P priority Critical
Application filed by Krafsur Andrew B filed Critical Krafsur Andrew B
Priority to US12/011,095 priority patent/US20080209762A1/en
Publication of US20080209762A1 publication Critical patent/US20080209762A1/en
Application status is Abandoned legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/14Soles; Sole and heel units characterised by the constructive form
    • A43B13/18Resilient soles
    • A43B13/181Resiliency achieved by the structure of the sole
    • A43B13/183Leaf springs
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00Heels; Top-pieces, e.g. high heels, heel distinct from the sole, high heels monolithic with the sole
    • A43B21/24Heels; Top-pieces, e.g. high heels, heel distinct from the sole, high heels monolithic with the sole characterised by the constructive form
    • A43B21/26Resilient heels
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00Footwear with health or hygienic arrangements
    • A43B7/14Footwear with foot-supporting parts
    • A43B7/1405Footwear with foot-supporting parts provided with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415Footwear with foot-supporting parts provided with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/1425Footwear with foot-supporting parts provided 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
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00Footwear with health or hygienic arrangements
    • A43B7/14Footwear with foot-supporting parts
    • A43B7/1405Footwear with foot-supporting parts provided with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415Footwear with foot-supporting parts provided with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/1435Footwear with foot-supporting parts provided 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 joint between the fifth phalange and the fifth metatarsal bone
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00Footwear with health or hygienic arrangements
    • A43B7/14Footwear with foot-supporting parts
    • A43B7/1405Footwear with foot-supporting parts provided with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1415Footwear with foot-supporting parts provided with pads or holes on one or more locations, or having an anatomical or curved form characterised by the location under the foot
    • A43B7/144Footwear with foot-supporting parts provided 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

Abstract

A spring cushioned shoe is disclosed. The shoe includes a sole assembly that has a first encapsulating spring enclosure with spring disposed within a vacuity of the heel region and a second encapsulating spring enclosure with spring disposed within a vacuity of the toe region. The springs are, e.g., wave springs that extend to the upper and lower boundaries of the encapsulating spring enclosure.

Description

    PRIORITY CLAIM
  • Applicant claims priority based upon U.S. Provisional Application No. 60/897,605 filed Jan. 26, 2007.
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • This invention relates to an improvement to the existing technology surrounding wave spring cushioned shoes. Specifically, prior wave spring cushioned shoes, as disclosed in U.S. Pat. No. 6,282,814 and U.S. Pat. No. 6,665,957, have utilized a fluid flow passageway to move fluid, such as air, from the heel portion of the shoe to the ball portion of the shoe during impact. The present invention eliminates the need of the fluid flow passageway.
  • 2. Description of the Prior Art
  • One of the most basic laws of physics is that for ever action there is an equal and opposite reaction. In terms of shoes and running, this means that for every step down (“foot strike”), there is an equal and opposite force exerted back towards the shoe and ultimately the person wearing the shoe. If life were but one step perhaps the forces involved would be inconsequential. But life, like running, is not a single step but a repetition of many steps. The forces that must be absorbed by a shoe and the wearer of the shoe over the course of a single event are tremendous and have spurred on countless inventions aimed at cushioning shoe impact forces.
  • U.S. Pat. No. 6,282,814 (the '814 patent) discloses a spring cushioned shoe wherein the springs are sealed within vacuities formed in the soles of the shoe. When the springs are sealed within a vacuity, the air within the vacuity is an integral part of the spring system. During a foot strike, air sealed within the vacuity behaves as an ideal gas and follows the numerical expression “PV=NRT.” Since temperature is constant, the pressure of the air varies inversely with the volume as the vacuity is compressed. In lay men's terms, as the volume of the vacuity is compressed during a foot strike, the air pressure within the vacuity increases and exerts a return force. While this aspect of air within the vacuity adds to the effectiveness of the spring system, air can and does interfere with the predictable operation of the spring and in such way can have a detrimental effect on the spring system To reduce the air interference on the spring, a fluid flow passageway, such as that discussed in the U.S. Pat. No. 6,665,957 (the '957 patent), can be used. The heel region of the shoe is the first to make contact with the ground during a foot strike. As the springs of the heel region are compressed, the fluid flow passageway of the '957 patent allows air to escape to the toe region of the shoe. As weight is transferred from the heel to the toe region of the shoe, the air escapes back into the heel region.
  • SUMMARY OF THE INVENTION
  • One would not have to have a degree in manufacturing to appreciate that if the fluid flow passageway could be eliminated, a reduction in manufacturing costs would be achieved while still maintaining the effectiveness of the shoe springs. It is therefore an object of the present invention to provide for an effective shoe spring without the necessity of the fluid flow passageway.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a side view of the self contained toe insert.
  • FIG. 2 is a top view of the self contained toe insert.
  • FIG. 3 is a top view of the self contained heel insert.
  • FIG. 4 is a top view of the self contained heel insert.
  • FIG. 5 is a top view of the sole of a shoe depicting both the heel and toe insert.
  • FIG. 6 is a close up illustration of the wave springs of the current invention.
  • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • The detailed embodiments of the present invention are disclosed herein. It should be understood, however, that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, the details disclosed herein are not to be interpreted as limiting, but merely as the basis for the claims and as a basis for teaching one skilled in the art how to make and/or use the invention.
  • FIG. 1 depicts a side view of the toe insert showing the wave springs [1 & 2] contained in a fully encapsulating spring enclosure [3]. The fluid within the encapsulating spring enclosure [3] can be any substance that flows such as a gas or a liquid. The volume of fluid within the encapsulating spring enclosure is sufficient to allow for enhanced spring performance and is not so great as to interfere with such performance. As disclosed in the '814 patent, the wave springs [1&2] are substantially identical to the multi turn compression springs with distinct crests and trough described by Greenhill in U.S. Pat. No. 4,901,987. As shown in FIG. 3 of the '814 patent and FIG. 6 herein, the wave springs of the current invention have circular flat shim ends [1A & 1B] and wave crest [1C] and wave trough [1D] with prescribed periodicity. FIG. 6 illustrates the configuration of wave springs [1&2] which provide for operationally acceptable force and deflection for a given free height of the springs. The compression wave springs of the preferred embodiment of this invention could be replaced with multi turn wave springs which do not employ flat shim ends but rather rely on the use of flat end plates in combination with ordinary wave springs. Although FIGS. 1 and 2 depicts the toe insert of the present invention with two wave springs [1&2], any number and combination of wave springs could be used so long as the effectiveness of the shoe spring was retained.
  • FIGS. 3 and 4 illustrate the insert of the present invention showing the wave spring [4] contained in a fully encapsulating spring enclosure [5]. As with the toe insert springs, although FIG. 3 shows only one wave spring, any number or combination of springs could be used so long as the effectiveness of the shoe spring was retained. FIG. 5 depicts the placement of the encapsulating spring enclosures [3 &4] into the shoe sole [5]. While the present invention provides cushioning for a shoe that utilizes wave springs placed in the ball and heel areas of the sole of a shoe, it should be obvious to one skilled in the art that the placement of the wave springs is not limited to only the ball and heel areas of the shoe. In the present invention the middle portion sole of the shoe sole assembly is made of foam with vacuities located at or near the ball and heel regions of the foot in order to accommodate placement of the springs. There are also numerous other methods and designs to place the wave springs into a shoe for cushioning and energy return.
  • While the preferred embodiments have been shown and described, it will be understood that there is no intent to limit the invention by such disclosure, but rather, is intended to cover all modifications and alternate constructions falling within the spirit and scope of the invention as defined in the appended claims.

Claims (13)

1. A shoe comprising a shoe sole defining a vacuity and an encapsulating spring enclosure with spring disposed within such vacuity.
2. The shoe of claim 1, wherein the vacuity is disposed within the heel region of the shoe sole.
3. The shoe of claim 2, further comprising a pair of vertically opposed plates, disposed on upper and lower ends of the spring encapsulating enclosure, wherein the spring is mounted within the enclosure between the opposed plates.
4. The shoe of claim 1, wherein the shoe sole further defines a second vacuity and an encapsulating spring enclosure with spring disposed within such vacuity.
5. The shoe of claim 4, wherein the first vacuity with encapsulating spring enclosure with spring is disposed within the heel region of the shoe sole, and the second encapsulating spring enclosure with spring is disposed within the ball region of the shoe sole.
6. The shoe of claim 5, wherein the spring and the second spring are both crest-to-crest multi-turn wave springs.
7. The shoe of claim 4, wherein the first and second encapsulating spring enclosures are hermetically sealed.
8. The shoe of claim 4, wherein the first and second encapsulating spring enclosures contain ambient air at atmospheric pressure.
9. The shoe of claim 1, wherein the spring is a multi-turn wave spring.
10. A shoe comprising a shoe sole including outer sole, an inner sole, and a mid-sole disposed above the outer sole and below the inner sole, the middle sole defining a vacuity and an encapsulating spring enclosure with spring disposed within such vacuity, and a second vacuity and an encapsulating spring enclosure with spring disposed within such vacuity.
11. The shoe of claim 10, wherein the first and second springs are multi-turn wave springs.
12. A shoe sole assembly comprising a compressible material defining a vacuity and an encapsulating spring enclosure with spring within the vacuity.
13. A shoe sole assembly comprising a sole member defining a vacuity and an encapsulating spring enclosure with spring within the vacuity.
US12/011,095 2007-01-26 2008-01-24 Spring cushioned shoe Abandoned US20080209762A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US89760507P true 2007-01-26 2007-01-26
US12/011,095 US20080209762A1 (en) 2007-01-26 2008-01-24 Spring cushioned shoe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/011,095 US20080209762A1 (en) 2007-01-26 2008-01-24 Spring cushioned shoe

Publications (1)

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US20080209762A1 true US20080209762A1 (en) 2008-09-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US8752306B2 (en) 2009-04-10 2014-06-17 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US20150027000A1 (en) * 2013-07-26 2015-01-29 Nike, Inc. Article of footwear with support assembly having primary and secondary members

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1069001A (en) * 1913-01-14 1913-07-29 William H Guy Cushioned sole and heel for shoes.
US1380869A (en) * 1920-03-26 1921-06-07 Hammond V Hayes Submarine signaling
US1469920A (en) * 1922-09-21 1923-10-09 Dutchak John Spring heel
US1502087A (en) * 1924-02-08 1924-07-22 Bunns Julius Boot or shoe
US1675256A (en) * 1927-07-13 1928-06-26 Ray Shelton Shoe heel
US1942312A (en) * 1932-10-05 1934-01-02 Stephen M Tutoky Shoe heel
US2334719A (en) * 1940-11-22 1943-11-23 Margolin Meyer Resilient middle sole or insole
US2444865A (en) * 1947-07-08 1948-07-06 John P Warrington Spring heel adapter
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US2535102A (en) * 1945-11-24 1950-12-26 Taylor James Walton Shoe heel
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
US3050875A (en) * 1962-05-07 1962-08-28 Daniel T Robbins Self-ventilating sole
US3225463A (en) * 1962-10-12 1965-12-28 Charles E Burnham Air ventilated insole
US3702999A (en) * 1971-02-22 1972-11-14 Ivan A Gradisar Partial weight bear warning device
US3791375A (en) * 1971-09-29 1974-02-12 E Pfeiffer Device for sensing and warning of excessive ambulation force
US3822490A (en) * 1973-05-02 1974-07-09 S Murawski Hollow member for shoes
US4267648A (en) * 1979-09-19 1981-05-19 Weisz Vera C Shoe sole with low profile integral spring system
US4446634A (en) * 1982-09-28 1984-05-08 Johnson Paul H Footwear having improved shock absorption
US4458430A (en) * 1981-04-02 1984-07-10 Peterson Lars G B Shoe sole construction
US4492046A (en) * 1983-06-01 1985-01-08 Ghenz Kosova Running shoe
US4592153A (en) * 1984-06-25 1986-06-03 Jacinto Jose Maria Heel construction
US4638575A (en) * 1986-01-13 1987-01-27 Illustrato Vito J Spring heel for shoe and the like
US4715130A (en) * 1985-09-20 1987-12-29 Alessandro Scatena Cushion system for shoes
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US5269081A (en) * 1992-05-01 1993-12-14 Gray Frank B Force monitoring shoe
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US5832629A (en) * 1996-12-03 1998-11-10 Wen; Jack Shock-absorbing device for footwear
US5860225A (en) * 1993-04-16 1999-01-19 Breeze Technology Self-ventilating footwear
US5875567A (en) * 1997-04-21 1999-03-02 Bayley; Richard Shoe with composite spring heel
US5896679A (en) * 1996-08-26 1999-04-27 Baldwin; Phillip Article of footwear
US5916071A (en) * 1998-03-20 1999-06-29 Lee; Yan-Yee Shoe equipped with spring for doing jumping exercise
US6006449A (en) * 1998-01-29 1999-12-28 Precision Products Group, Inc. Footwear having spring assemblies in the soles thereof
US6079123A (en) * 1998-09-28 2000-06-27 Breeze Technology Self-ventilating insert for footwear
US6282814B1 (en) * 1999-04-29 2001-09-04 Shoe Spring, Inc. Spring cushioned shoe
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
US6751891B2 (en) * 1999-04-29 2004-06-22 Thomas D Lombardino Article of footwear incorporating a shock absorption and energy return assembly for shoes
US6886274B2 (en) * 1999-04-29 2005-05-03 Shoe Spring, Inc. Spring cushioned shoe
US20050241184A1 (en) * 2003-01-02 2005-11-03 Levert Francis E Shock resistant shoe
US20050247385A1 (en) * 2002-02-08 2005-11-10 Krafsur David S Process for improving fatigue life in spring-cushioned shoes
US7219447B2 (en) * 1999-04-29 2007-05-22 Levert Francis E Spring cushioned shoe

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1069001A (en) * 1913-01-14 1913-07-29 William H Guy Cushioned sole and heel for shoes.
US1380869A (en) * 1920-03-26 1921-06-07 Hammond V Hayes Submarine signaling
US1469920A (en) * 1922-09-21 1923-10-09 Dutchak John Spring heel
US1502087A (en) * 1924-02-08 1924-07-22 Bunns Julius Boot or shoe
US1675256A (en) * 1927-07-13 1928-06-26 Ray Shelton Shoe heel
US1942312A (en) * 1932-10-05 1934-01-02 Stephen M Tutoky Shoe heel
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US2535102A (en) * 1945-11-24 1950-12-26 Taylor James Walton Shoe heel
US2447603A (en) * 1946-09-27 1948-08-24 Ballard F Snyder Shoe
US2444865A (en) * 1947-07-08 1948-07-06 John P Warrington Spring heel adapter
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
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US3225463A (en) * 1962-10-12 1965-12-28 Charles E Burnham Air ventilated insole
US3702999A (en) * 1971-02-22 1972-11-14 Ivan A Gradisar Partial weight bear warning device
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US4458430A (en) * 1981-04-02 1984-07-10 Peterson Lars G B Shoe sole construction
US4446634A (en) * 1982-09-28 1984-05-08 Johnson Paul H Footwear having improved shock absorption
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US5353525A (en) * 1989-02-14 1994-10-11 Vistek, Inc. Variable support shoe
US4910884A (en) * 1989-04-24 1990-03-27 Lindh Devere V Shoe sole incorporating spring apparatus
US5369896A (en) * 1989-05-24 1994-12-06 Fila Sport S.P.A. Sports shoe incorporating an elastic insert in the heel
US5068981A (en) * 1990-10-27 1991-12-03 In Soo Jung Self-ventilating device for a shoe insole
US5337492A (en) * 1990-11-07 1994-08-16 Adidas Ag Shoe bottom, in particular for sports shoes
US5502901A (en) * 1991-05-07 1996-04-02 Brown; Jeffrey W. Shock reducing footwear and method of manufacture
US5269081A (en) * 1992-05-01 1993-12-14 Gray Frank B Force monitoring shoe
US5282324A (en) * 1992-06-29 1994-02-01 Cheng Peter S C Valveless ventilating arrangement for a shoe and method
US5224278A (en) * 1992-09-18 1993-07-06 Jeon Pil D Midsole having a shock absorbing air bag
US5437110A (en) * 1993-02-04 1995-08-01 L.A. Gear, Inc. Adjustable shoe heel spring and stabilizer
US5860225A (en) * 1993-04-16 1999-01-19 Breeze Technology Self-ventilating footwear
US5343636A (en) * 1993-05-24 1994-09-06 Albert Sabol Added footwear to increase stride
US5560126A (en) * 1993-08-17 1996-10-01 Akeva, L.L.C. Athletic shoe with improved sole
US5435079A (en) * 1993-12-20 1995-07-25 Gallegos; Alvaro Z. Spring athletic shoe
US5511324A (en) * 1994-04-01 1996-04-30 Smith; Roosevelt Shoe heel spring
US5513448A (en) * 1994-07-01 1996-05-07 Lyons; Levert Athletic shoe with compression indicators and replaceable spring cassette
US5595002A (en) * 1994-12-05 1997-01-21 Hyde Athletic Industries, Inc. Stabilizing grid wedge system for providing motion control and cushioning
US5517769A (en) * 1995-06-07 1996-05-21 Zhao; Yi Spring-loaded snap-type shoe
US5544431A (en) * 1995-06-16 1996-08-13 Dixon; Roy Shock absorbing shoe with adjustable insert
US5671552A (en) * 1995-07-18 1997-09-30 Pettibone; Virginia G. Atheletic shoe
US5651196A (en) * 1996-01-11 1997-07-29 Hsieh; Frank Highly elastic footwear sole
US5639074A (en) * 1996-03-05 1997-06-17 Smalley Steel Ring Co. Interlaced wave spring
US5649374A (en) * 1996-05-10 1997-07-22 Chou; Hsueh-Li Combined resilient sole of a shoe
US5706589A (en) * 1996-06-13 1998-01-13 Marc; Michel Energy managing shoe sole construction
US5896679A (en) * 1996-08-26 1999-04-27 Baldwin; Phillip Article of footwear
US5743028A (en) * 1996-10-03 1998-04-28 Lombardino; Thomas D. Spring-air shock absorbtion and energy return device for shoes
US5832629A (en) * 1996-12-03 1998-11-10 Wen; Jack Shock-absorbing device for footwear
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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
US8112905B2 (en) 2009-04-10 2012-02-14 Athletic Propulsion Labs LLC Forefoot catapult for athletic shoes
US8347526B2 (en) 2009-04-10 2013-01-08 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US8495825B2 (en) 2009-04-10 2013-07-30 Athletic Propulsion Labs LLC Forefoot catapult for athletic shoes
US8621766B2 (en) 2009-04-10 2014-01-07 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US8732983B2 (en) 2009-04-10 2014-05-27 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US8752306B2 (en) 2009-04-10 2014-06-17 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US9364044B2 (en) 2009-04-10 2016-06-14 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US10085514B2 (en) 2009-04-10 2018-10-02 Athletic Propulsion Labs LLC Shoes, devices for shoes, and methods of using shoes
US20150027000A1 (en) * 2013-07-26 2015-01-29 Nike, Inc. Article of footwear with support assembly having primary and secondary members
US9451805B2 (en) * 2013-07-26 2016-09-27 Nike, Inc. Article of footwear with support assembly having primary and secondary members

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