Fluid flow system for spring-cushioned shoe
US6665957B2 · kind B2 · utility
48Cited by
59References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Nov 13, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A fluid flow system for a spring-cushioned shoe is disclosed. The sole of the shoe includes a vacuity, a spring disposed within the vacuity, and a fluid passageway in fluid communication with the vacuity. The fluid flow passageway allows fluid, such as air, to escape the vacuity when the volume of the vacuity is reduced during a foot strike.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.