Golf club shaft
US5947839A · kind A · utility
11Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S273/23
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf club shaft which can enhance the directivity of a golf ball. In the golf club shaft, the kick point and the position at which the torsional rigidity in the circumferential direction is lowest are set at a position distant from the front end portion of the shaft by 30 to 50% with respect to the overall length of the shaft and made to coincide substantially with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.