Single spring double lockblade folding knife
US4302877A · kind A · utility
28Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1980 |
| Grant date | Dec 1, 1981 |
| Priority date | — |
| Expiry date | May 12, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B1/042
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A foldable knife is provided having two lock blades each of which or both of which simultaneously may be locked in their open position against movement in either direction about their respective pivots. A separate locking member and tumbler is provided for each blade but only a single spring is utilized to operate both locking members and urge them toward their locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.