Torsion spring wrench
US4142283A · kind A · utility
11Cited by
2References
7Claims
0Family size
Inventors
Key dates
| Filing date | May 23, 1977 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | May 23, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/53622
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A C-shaped or ring-shaped collar member having a groove along the inner periphery of one end in combination with an adjustable pin insert for engaging the end of a torsion spring threaded on a cone. Apertures are provided in the collar for accepting a winding bar to rotate the collar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.