Reversible ratchet mechanism for ratchet tools
US7677137B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jan 23, 2009 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Jan 23, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/465
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A reversible ratchet mechanism for ratchet tools comprises a positioning portion the middle section of which is formed with a concave U groove. Two sides of the U groove are each formed with a receiving groove to which a wedge flake is wedged. An elastic part is provided in the U groove to elastically push open the wedge flakes. A reversible ring is set around the positioning portion, the inner circumference of which is formed with two stoppers that may drive the wedge flakes to turn. A ratchet is set around the positioning portion, the inner side of which is formed with a gear wedging the wedge flakes. Thus, when turning an angle, the reversible ring may drive one of the wedge flakes to release from the gear and thus make the ratchet clutch in a direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.