Adjusting stiffness and flexibility in sports equipment
US6257997A · kind A · utility
62Cited by
27References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Aug 18, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/50
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A sports apparatus with variable directions of stiffness and flexibility, including sports equipment having a body; and a flexure resistance spine that is elongated and is stiffer and less flexible in one direction than in a different direction. The spine is fixed against rotation at two spaced apart locations along the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.