Hand tool with multiple locking blades controlled by a single locking mechanism and release
US6170104A · kind A · utility
57Cited by
63References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1998 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B1/048
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hand tool such as a knife or a combination tool includes multiple blades, each independently rotatable on a common axle between a closed position within a handle of the tool and an open position extending from the handle. Each blade is positively but releasably locked into its open position. Those blades which remain closed are biased toward the closed position when the opened blade is locked into position and also as it is opened and closed. A single locking, releasing, and biasing mechanism serves all of the blades in one handle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.