Automatically adjusting self-tightening wrench
US6971288B2 · kind B2 · utility
14Cited by
23References
8Claims
0Family size
Inventor
Key dates
| Filing date | Dec 27, 2001 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Dec 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/505
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A self-adjusting wrench having a handle and a jaw member rotationally attached thereto. A smoothly curved handle face opposes a planar face on the jaw member which adjusts for distance from the curved handle face by following a generally circular path around a pinned attachment of the jaw member to the handle. A spring or similar biasing device continuously urges the jaw member toward the handle thereby making the device self adjusting to the size of the object placed between the jaw member and the curved handle surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.