Cantilever spring assist knife
US8893389B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2011 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B1/046
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A folding tool includes a handle and an implement pivotally coupled to the handle. The implement is adapted to travel between a closed position and an open position. The implement includes a tang having a contoured surface. The folding tool also includes a locking device movable between a locked position and an unlocked position along an axis that is transverse to a plane defined by the implement. The folding tool further includes a cantilever spring having a first end coupled to the handle and a second end adapted to interact with the tang of the implement. The spring exerts a closing force on the implement when the blade is in a closed position. The spring exerts an opening force on the implement during at least a portion of the travel of the implement between the closed position and the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.