Ratchet wrench
US8640573B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2011 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Apr 25, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0813
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ratchet wrench for use in connection with medical instruments comprises a handle and a drive element which is rotatable around an axis (M) with respect to the handle. The wrench is adapted to tighten or loosen a respective element and a ratchet mechanism which is in connection with the drive element and which permits movement with respect to the handle in a first direction of rotation (R1) and blocks movement in the other direction of rotation (R2). The handle comprises a flat arm, wherein the ratchet mechanism is arranged on a bearing surface of the flat arm, and wherein the drive element extends through an opening in the flat arm in which opening the drive element is rotatably arranged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.