Golf club shaft
US8491408B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | May 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B60/48
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An adjustable length golf club shaft having a grip portion with an end point is disclosed. A locking element is located within the grip portion and a lower shaft having an inner surface that is in frictional contact with the locking element is also disclosed. The locking element is configured to engage the inner surface of the lower shaft. A total length of the golf club shaft is adjustable by a distance of at least one inch and a total weight of the golf club shaft in a weight zone is less than 110 g. The weight zone is defined as a region of the golf club shaft extending from the end point of the grip portion up to 11″ along a central axis of the golf club shaft toward a tip portion of the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.