Claims
- 1. A running shoe traction system oriented in a normal plane comprising a lightweight forefoot region constructed of a relatively inflexible material having multiple spikes; a lightweight heel region constructed of a relatively inflexible material having multiple spikes; a flexible linkage made of a springy material between the forefoot region and the heel region that allows the forefoot region and the heel region to be flexed relative to each other at least 45 degrees from the normal plane without damaging or permanently deforming the system; and a strap or harness attachment adapted to secure the traction system to a running shoe.
- 2. The running shoe traction system of claim 1 wherein the forefoot region and the heel region comprise a plastic.
- 3. The running shoe traction system of claim 1 wherein forefoot region and the heel region flex relative to each other at least 90 degrees from the normal plane without damaging or permanently deforming the system.
- 4. The running shoe traction system of claim 1 wherein the strap or harness attachment allows the system to be quickly attached and removed from a running shoe.
- 5. The running shoe traction system of claim 1 wherein the system has a weight 0.7 pounds or less per foot unit.
- 6. The running shoe traction system of claim 1 wherein the flexible linkage comprises a multi-layered extender bar.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation of application Ser. No. 10/053,049, filed Jan. 17, 2002 which is based upon provisional applications Serial No. 60/263,995, filed Jan. 23, 2001 and Serial No. 60/335,659, filed Oct. 23, 2001.
Provisional Applications (2)
|
Number |
Date |
Country |
|
60263995 |
Jan 2001 |
US |
|
60335659 |
Oct 2001 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
10053049 |
Jan 2002 |
US |
Child |
10821271 |
Apr 2004 |
US |