Golf club shaft
US6306047A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1998 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1369
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A golf club includes a shaft having prepreg sheets wound thereon, each of the prepreg sheets being formed by orienting reinforcing fibers in one direction and then by impregnating the fibers with a synthetic resin. The shaft includes an oblique fiber layer formed by winding the prepreg sheets 7a and 7b, each having the reinforcing fibers oriented in a direction oblique relative to an axis of the shaft, in such a superposed manner that the directions of orientation of the reinforcing fibers of the prepreg sheets cross each other, and a thickness of each of the prepreg sheets 7a and 7b, constituting the oblique fiber layer, is not more than 0.06 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.