Higher overall flex golf shaft
US6827656B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1997 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2209/02
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A composite golf club shaft is constructed having a reduced butt diameter of 0.400 to 0.560 inches in diameter. The shaft tapers without intentional discontinuities from the reduced-diameter butt section to a cylindrical tip portion having a standard tip diameter adapted to be attached to the hosel of a club head. By reducing the diameter of the butt portion of the shaft while maintaining the shaft free of substantial discontinuities, lead-lag flexure is increased uniformly, thereby improving the controllability of the shaft, and without inducing the artificial bending modes found in bubble shafts and other shaft configurations having intentional discontinuities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.