Variable force tool
US5689888A · kind A · utility
37Cited by
16References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Aug 20, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G3/0251
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A variable force lopping tool is provided with a gear mechanism configured so that maximum leverage is obtained at a point in the cutting stroke corresponding to the maximum resistance by the workpiece being cut. The mechanism comprises a pair of mating gears formed on first and second elongated members and cooperating with a plate having a forwardly extending jaw or blade. The plate is pivotally connected to the first member. The second member is pivotally connected to a rearwardly extending tang of the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.