Ratchet wrench structure having a high torsion driving action along dual directions
US6415691B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Aug 29, 2001 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Aug 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/463
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ratchet wrench structure includes a wrench body defining a receiving hole receiving a ratchet wheel and a receiving recess receiving a locking pawl, a resting block, and two elastic members. The locking pawl has a first side formed with locking teeth engaging the engaging teeth of the ratchet wheel, and a second side formed with an arcuate inner face. The resting block has a first end rested on the arcuate resting face of the receiving recess, and a second end formed with a resting end rested on the arcuate inner face of the locking pawl. The two elastic members received in two sides of the resting block, wherein one elastic member is rested on the arcuate resting face of the receiving recess, and the other elastic member is rested on the arcuate inner face of the locking pawl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.