Adjustable vice-locking end wrench
US4794824A · kind A · utility
9Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jun 5, 1987 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Jun 5, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved and simplified vice-locking adjustable end wrench with a primary handle whose jaws are manually adjustable by a customary knurled worm gear for initial adjustment, and a simple, single clamping and gripping pivotal handle relative to the usual handle and secured at one end at the jaws and freely extending to the end of the handle to achieve a vice-like gripping action with maximum desired mechanical advantage and force when the handles are forced together to an adjustable extent in a nested relationship so that the clamping handle can effectively carry the initial wrench closing forces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.