Track shoe having metatarsal cushion on spike plate

• US 4,361,971 A
• Filed: 04/28/1980
• Issued: 12/07/1982
• Est. Priority Date: 04/28/1980
• Status: Expired due to Term

• Current Assignee: Nike, Inc.
• Original Assignee: BRS, Incorporated
• Inventors: Bowerman, William J.
• Primary Examiner(s): Lawson, Patrick D.
• Application Number:
  US06/144,197
• Time in Patent Office: 953 Days
• Field of Search: 36/129, 36/28, 36/59 R, 36/67 R, 36/67 D
• US Class Current: 36/129
• CPC Class Codes: A43B 5/06 Running shoes; Track shoes

Abstract

A track shoe is described having a cushion member of resilient elastomer material secured to the bottom surface of its spike plate beneath the metatarsal bones of the wearer'"'"'s foot. The cushion member is positioned behind and separate from the rearmost spikes on such spike plate. Such cushion member has an average width longitudinally of the shoe greater than its thickness. The cushion member absorbs shock, helps runners stay on their toes by preventing "rock-back" onto the heel of the shoe, and aids in foot stability during landing.

Claims

1. A running shoe in which the improvement comprises:

a spike plate having a plurality of spike fastening means for attaching spikes to the plate; and

a cushioning member of resilient material different than the material of the spike plate secured to the lower surface of said plate, said cushioning member being positioned behind and separate from the rearmost spike fastening means and extending below the lower surface of the spike plate including surface portions surrounding said spike fastening means, said cushioning member being tapered in width longitudinally of the shoe with a greater width at the lateral side of the shoe than at the medial side of the shoe.

2. A shoe in accordance with claim 1 in which the cushioning member is positioned beneath the ball of the wearer'"'"'s foot and the metatarsal bones of said foot.

3. A shoe in accordance with claim 1 in which the average width of the cushioning member longitudinally of the shoe is greater than the thickness of said cushioning member.

4. A shoe in accordance with claim 1 in which the cushioning member is tapered in width longitudinally of the shoe with a greater width at the lateral side of the shoe than at the medial side of said shoe.

5. A shoe in accordance with claim 1 in which the spike plate fastening means include threaded fasteners provided within raised projections on the spike plate extending below the lower surface of the remainder of the spike plate and the cushioning member extends downward beyond said raised projections.

6. A shoe in accordance with claim 1 in which the cushioning member is made of elastomer material and is bonded to the spike plate.

7. A shoe in accordance with claim 6 in which the spike plate is made of nylon.

8. A shoe in accordance with claim 7 in which the cushioning member is made of polyurethane.

9. A shoe in accordance with claim 1 in which the spike fastening means includes an internally threaded metal anchor member to hold removable spikes.

10. A shoe in accordance with claim 1 in which the spike plate is made of a flexible, non-resilient synthetic plastic material and the cushioning member is bonded to the spike plate.

11. A track shoe in which the improvement comprises:

a spike plate having a plurality of spike fastening means for attaching spikes to the plate; and

a cushioning member of resilient elastomer material provided on the bottom of said spike plate beneath the metatarsal bones of the wearers foot, and having an average width longitudinally of the shoe which is greater than the height of said cushioning member, said cushioning member being tapered in width with a greater width at the lateral side than at the medial side of the shoe.

12. A shoe in accordance with claim 11 in which the cushioning member is positioned behind the rearmost spikes on said spike plate.

13. A shoe in accordance with claim 11 in which the spike fastening means are provided within raised projections on the spike plate and the cushioning member extends downward beyond said raised projections.

14. A running shoe in which the improvement comprises:

a nylon spike plate having a plurality of spike fastening means for attaching spikes to the plate; and

a cushioning member of a resilient polyurethane material bonded to the nylon spike plate, said cushioning member being positioned completely behind and separate from the rearmost spike fastening means and extending below the lower surface of the spike plate including surface portions surrounding said spike fastening means.

15. A shoe in accordance with claim 14 wherein said cushioning member has a Shore A hardness of about 65 to 75.

16. A running shoe in which the improvement comprises:

a spike plate having a plurality of spike fastening means for attaching spikes to the plate; and

a cushioning member of resilient material different than the material of the spike plate secured to the lower surface of said spike plate, said cushioning member being positioned completely behind and separate from the rearmost spike fastening means and beneath the ball of the wearer'"'"'s foot and the metatarsal bone of the foot, said cushioning member extending below the lower surface of the spike plate and having an average width longitudinally of the shoe greater than its thickness.

17. A shoe in accordance with claim 16 wherein the average width of said cushioning member is approximately four times its thickness.

18. A spike plate for use with a running shoe comprising:

a plate member having a plurality of spike fastening means for removably attaching spikes to the plate member, said plate member being made of a synthetic plastic material;

a cushioning member of a resilient material having a Shore A hardness in the range of approximately 65 to 75, said cushioning member being positioned completely behind and separate from the rearmost spike fastening means and extending below the lower surface of said plate member including surface portions surrounding said spike fastening means, said cushioning member having an average longitudinal width greater than its thickness and being tapered longitudinally with a greater width at its outer side than at its inner side.