Compound toggle link
US5056385A · kind A · utility
71Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Apr 30, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B7/123
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A quick release for a conventional plier-type, toggle-locking hand tool comprises a compound toggle link. The new link is pivotably mounted between the movable handle and the conventional toggle member. Four pivot points rather than the usual three form the "power line" of the tool. Locking the tool involves pushing the two internal pivot points inwardly across the power line. Release involves opening the handles which moves the internal pivot points back across the power line. Depending on the dimensions of the actual hand tool, the mechanical advantage of the novel compound link is between 4 to 16.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.