Adjustable golf club
US4815740A · kind A · utility
Inventors
Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32368
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A putter club head has a circular array of like serrations emanating radially from a shaft pivot axis which intersects a shaft longitudinal axis at the mass center of gravity of the head. The shaft is attached to a shank member which rotates around a journal secured to the head. The shank member has a circular array of serrations which mate with and engage serrations on the head. The shank member serrations are releaseably clamped against the head serrations along the pivot axis. A ring circumscribes the interface of the mating serrations to preclude foreign matter from entering into the space between the serrations. The serrations have a given angular spacing to provide known angular positions of the shaft relative to a reference position. A stop device limits the relative angular rotation of the shaft to the head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.