Ratchet wrench structure
US6513409B1 · kind B1 · utility
9Cited by
2References
5Claims
0Family size
Inventor
Key dates
| Filing date | Jan 25, 2002 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jan 25, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B13/463
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a ratchet wrench structure including a wrench body, a ratchet wheel, a pawl member, and a control knob. The wrench body has a drive head formed with an operation space for receiving the ratchet wheel, a control space for receiving the control knob, a connecting space between the operation space and the control space for receiving the pawl member. The pawl member is provided with a control spring that is provided with a control ring. The control knob has a control rod is passed through the control ring of the control spring, for moving and displacing the control ring of the control spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.