Folding knife with locking mechanism
US6836967B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B1/048
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A folding knife includes a handle and a blade pivotally supported on the handle. A tang of the blade includes a cam surface. The cam surface has a substantially arcuate guiding portion and an engaging portion that extends continuously from one end of the guiding portion. A notch formed on an upper edge of the handle is provided with a lock mechanism. The lock mechanism includes a guide member, which is fixed to the handle in the notch, a hollow lock tube, which is supported on the guide member, and a coil spring, which is accommodated in the lock tube. The lock tube is movable along the longitudinal direction of the handle between a lock position for engaging the engaging portion and an unlock position separated from the engaging portion. When the blade is in the open position, the coil spring moves the lock tube toward the lock position. Thus, the blade is securely locked in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.