Athletic shoe with an enhanced mechanical advantage
US5048203A · kind A · utility
238Cited by
11References
8Claims
0Family size
Inventor
Key dates
| Filing date | Apr 5, 1990 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Apr 5, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/223
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An athletic shoe comprises an upper member and a sole member. The sole member is characterized in having a substantially flat bottom surface, a lateral channel in the sole's bottom surface at the metatarsal area of the user's foot, and a set of inwardly concave longitudinally extending channels in the sole's bottom surface. A plurality of vertically extending grooves in the sole member's side walls are provided in a preferred embodiment. The structural features in the sole member impart a mechanical advantage to the user of the athletic shoe while not impairing the comfort of the shoe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.