Switching arrangement for a reversible ratchet type wrench
US6666112B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jul 9, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Jul 9, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/463
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A wrench includes a handle and a head extended from the handle. The handle includes a transverse receptacle communicated with a hole in the head and a cavity that communicates with the transverse receptacle. Two pawls are mounted in the transverse receptacle and each include a first side for releasably engaging with a drive member in the hole of the head and a second side abutting against an inner longitudinal wall of the transverse receptacle. A switch member is rotatably mounted in the cavity of the handle and includes an actuating portion for selectively moving one of the pawls to a position not engaging with the drive member. The switch member further includes two support portions for selectively supporting a portion of the other pawl that disengages from the inner longitudinal wall of the transverse receptacle, thereby supporting the other pawl that engages with the drive member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.