Spanner
US5619890A · kind A · utility
18Cited by
3References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 10, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Aug 10, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/462
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A improved spanner includes a lever handle, coaxial interior and exterior rings, a plurality of columned cams with non-circular cross section retained in an annular space formed between both rings, an annular spring for rolling each columned cam on the outer peripheral surface of the interior ring and wedging the non-circular surface of each columned cam into the inner surface of the exterior ring, and a shaft, for mounting an adapter which engages a bolt head, nut, or the like, coaxially mounted in the interior ring. The shaft is movable in the direction of an axis of the interior ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.