Patent US4815221A successfully refreshed from Google Patents.
US4815221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe with energy control system
Assignee: Reebok International Ltd
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Filing: 1987-02-06
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Granted: 1989-03-28
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Expires: 2007-02-06
Abstract
Abstract A shoe has a sole with an energy control system for shock absorption and for propulsion of the wearer. The energy control system includes a spring system and an overlying energy absorbing member located in a cavity in the midsole. The spring system includes a spring plate with a plurality of curved, resilient strips projecting there from. The resilient strips are deformed under the load of the foot of the wearer and then return to their original shape as the foot is lifted and the lead is removed. A support rib at the rear of each resilient strip directs the released energy in a forward force component as the strip returns to its uncompressed shape. An energy absorbing member, preferably a layer of urethane is provided over the spring system.
Inventors
- 👤 Juan A. Diaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:19
CPC Classifications
A; A43; A43B; A43B21/00; A43B21/24; A43B21/26; A43B13/00; A43B13/14; A43B13/18; A43B13/181; A43B13/183
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising a sole member having a cavity for receiving said energy control system and a spring system located in said cavity, said spring system comprising: a spring plate; a plurality of resilient and compressible projections extending from said spring plate, said resilient and compressible projections comprising curved strips attached at both ends to said spring plate and oriented longitudinally with respect to said sole member; and directing means for directing the release of absorbed energy in a specific direction, said directing means comprising a stiffening member at the rear of at least one of said curved strips.
Claim 2
Dependent Claim
116 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising a sole member having a cavity for receiving said energy control system and a spring system located in said cavity, said spring system comprising: a spring plate; a plurality of resilient and compressible projections extending from said spring plate, said resilient and compressible projections comprising curved strips attached at both ends to said spring plate and oriented longitudinally with respect to said sole member; and directing means for directing the release of absorbed energy in a specific direction, said directing means comprising a stiffening member at the rear of at least one of said curved strips.
Claim 3
Dependent Claim
22 words
The energy control system of claim 1 wherein said stiffening member comprises a rib attached between said projection and said spring plate.
Claim 4
Dependent Claim
19 words
The energy control system of claim 2 wherein said spring plate, said projections and said ribs are integrally formed.
Claim 5
Dependent Claim
23 words
The energy control system of claim 3 wherein said spring plate, said projections and said ribs are integrally formed of a polyester elastomer.
Claim 6
Dependent Claim
119 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved stripes oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a stiffening member at the rear of at least one of said curved strips for directing the release of absorbed energy in a specific direction; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 7
Dependent Claim
119 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved stripes oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a stiffening member at the rear of at least one of said curved strips for directing the release of absorbed energy in a specific direction; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 8
Dependent Claim
123 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved strips oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a rib attached between the rear of at least one of said curved strips and said spring plte for directing the release of absorbed energy in a specific direction; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 9
Dependent Claim
123 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved strips oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a rib attached between the rear of at least one of said curved strips and said spring plte for directing the release of absorbed energy in a specific direction; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 10
Dependent Claim
136 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved strips oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a rib attached between the rear of at least one of said curved strips and said spring plate for directing the release of absorbed energy in a specific direction, wherein said spring plate, said curved strips and said ribs are integrally formed; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 11
Dependent Claim
136 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved strips oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a rib attached between the rear of at least one of said curved strips and said spring plate for directing the release of absorbed energy in a specific direction, wherein said spring plate, said curved strips and said ribs are integrally formed; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 12
Dependent Claim
140 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved strips oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a rib attached between the rear of at least one of said curved strips and said spring plate for directing the release of abosrbed energy in a specific direction, wherein said spring plate, said curved strips and said ribs are integrally formed of a polyester elastomer; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
Claim 13
Dependent Claim
140 words
An energy control system for shoes, said energy control system for absorbing and releasing energy, said energy control system comprising: a sole member having a cavity for receiving said energy control system; a spring system located in said cavity, said spring system comprising a spring plate, a plurality of resilient and compressible curved strips oriented longitudinally with respect to said sole member extending from said spring plate and attached at both ends to said spring plate, and directing means comprising a rib attached between the rear of at least one of said curved strips and said spring plate for directing the release of abosrbed energy in a specific direction, wherein said spring plate, said curved strips and said ribs are integrally formed of a polyester elastomer; and an energy absorbing member overlaying said spring system for cushioning and shock absorbing.
References Cited (Backward Citations)
US607086A
Cited
US614688A
Cited
US617701A
Cited
US1172613A
Cited
GB431023A
Cited
US2080499A
Cited
US2078551A
Cited
US2157912A
Cited
US4391048A
Cited
US4638575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |