Pivotal hand tool and pivot joint therefor
US5220856A · kind A · utility
22Cited by
24References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 7, 1991 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | May 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B7/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A pivotal hand tool includes first and second lever members which intersect and have aligned openings therethrough in which is received a pivot pin having an enlarged head at one end adjacent to one of the lever members and having the other end thereof welded to the other lever member or to a flat washer which bears against the other lever member. The head and the flat washer may be received in complementary recesses in the lever members. A frustoconical washer may be disposed beneath the head of the pivot pin for resiliently urging the lever members together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.