Roller-type ratchet device for wrench
US6253646A · kind A · utility
Inventor
Key dates
| Filing date | Mar 9, 2000 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/462
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A roller-type ratchet device is used for a wrench which includes a driving head defining a receiving hole and a plurality of actuating recesses. The ratchet device includes a driving body secured in the receiving hole to rotate with the driving head, a follower secured between the driving body and the driving head and having a plurality of fixed portions each mounted in a respective one of the actuating recesses, a plurality of locking members each secured in a respective one of the fixed portions of the follower to move therewith, and each pressing the driving body, and a direction control knob pivotally mounted on the driving head and engaged with the follower for moving each of the locking members in the respective actuating recess between different positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.