Variable force compound action leverage tool
US5020222A · kind A · utility
55Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1987 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Feb 10, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B13/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Shears are provided with a cutting mechanism for obtaining maximum leverage at the point in the cutting stroke corresponding to the maximum resistance. The cutting mechanism comprises cooperating first and second shearing members and a lever arm. The lever arm is pivotally connected to the first shearing member and a sliding connection is effected between the second shearing member and the lever arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.