Shoe with energy storing spring having overload protection mechanism
US5729916A · kind A · utility
36Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Jun 10, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/183
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A shoe is provided with a spring mechanism in the heel area. The spring includes a pair of generally circular end portions which are supported by the outsole and a beam portion which extends between the end portions. Initial impact cushioning is provided by resilient deflection of the end portions and compression of surrounding materials. The main cushioning is provided by linear deflection of the beam portion. Overload protection is provided by restorable collapsing of the cross section of the beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.