Resilient lock for a hand tool
US5367774A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1993 |
| Grant date | Nov 29, 1994 |
| Priority date | — |
| Expiry date | Jun 29, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G3/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to tools such as scissors, shears, pruners, and the like, which are resiliently biased to an open position, and which have a locking mechanism to keep these tools in a closed configuration. More particularly, this invention is concerned with tools having a pair of cooperatively engaging members provided with a resilient lock slidable within slots formed in these members. The lock includes a button having a yieldable head merging into a shank extending through the slots, the shank being joined to a cap. The head and cap have concavely shaped faces so that they are effectively in contact with the tool in respective annular regions of the tool, the area of these regions being proportional to the degree of compressive force applied to the lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.