Golf club shaft and set of golf clubs
US4165874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1977 |
| Grant date | Aug 28, 1979 |
| Priority date | — |
| Expiry date | Sep 14, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B53/005
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An improved golf club shaft and golf club, the shaft being of stepped configuration, having a uniform outer diameter butt end portion having a uniform wall thickness at least 10 inches (254mm) long, the uniform wall thickness being not greater than 0.012 (0.305mm) and a plurality of cylindrical step portions of progressively smaller outer diameter terminating in a tapered tip end portion having a wall thickness at the tip end of at least 0.024 (0.610)mm). The shaft is characterized by a redistribution of metal which results in a balance point closer toward the tip of the shaft, making it possible to use a lighter head without affecting the swing weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.