Removable thumb insert assembly for bowling balls
US5795236A · kind A · utility
10Cited by
3References
3Claims
0Family size
Inventors
Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B37/0001
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A removable bowling ball thumb insert sleeve for installation in a bowling ball hole, having an expander within a short counterbore in the bottom portion of the thumb insert sleeve. The expander device is actuated by rotation of an actuating screw using a tool inserted through a center bore within the thumb insert sleeve. Actuation of the expander device expands a split ring within the counterbore to engage the sleeve and urge it radially outwardly to engage the wall of the bowling ball hole and frictionally retain the sleeve within the hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.