Method for producing composite golf club shafts
US6197232A · kind A · utility
Inventor
Key dates
| Filing date | Sep 23, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Sep 23, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/5227
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A lightweight shaft configured for use as a golf club shaft or a composite golf club equipped with such a shaft. The uniqueness of this shaft is that it is made of two distinct composite walls (tubes, one tube within another) with a greater density than, and separated by, an expansive middle layer of lesser density material which expands with the application of heat during the composite curing cycle. Additionally, the tip of the shaft (one to six inches in length from the tip, or longer, as required by design) is to be made of solid material (composite, metal or other material). The addition of this solid tip to the shaft as called for in this invention, provides for a stronger and solid tip that can be adjusted to fit into the hosel openings of any club head. This goes to provide a much stronger joining of the head to the shaft and adds to the clubs impact with the golf ball thus providing for greater travel distance of the ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.