Shoe with energy control system

• US 4,815,221 A
• Filed: 02/06/1987
• Issued: 03/28/1989
• Est. Priority Date: 02/06/1987
• Status: Expired due to Fees

• Current Assignee: Reebok International Limited (Authentic Brands Group, LLC)
• Original Assignee: Reebok International Limited (Authentic Brands Group, LLC)
• Inventors: Diaz, Juan A.
• Primary Examiner(s): Petrakes, John
• Application Number:
  US07/011,732
• Time in Patent Office: 781 Days
• Field of Search: 36/27, 36/28, 36/37, 36/38, 36/35 R, 36/7.8
• US Class Current: 36/27
• CPC Class Codes: A43B 13/183 Leaf springs
• CPC Class Codes: A43B 21/26 Resilient heels

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.

Claims

1. 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.

2. The energy control system of claim 1 wherein said stiffening member comprises a rib attached between said projection and said spring plate.

3. The energy control system of claim 2 wherein said spring plate, said projections and said ribs are integrally formed.

4. The energy control system of claim 3 wherein said spring plate, said projections and said ribs are integrally formed of a polyester elastomer.

5. 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.

6. 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.

7. 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.

8. 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.