Ratchet wrench with lighting circuit means
US6508565B2 · kind B2 · utility
7Cited by
3References
4Claims
0Family size
Inventor
Key dates
| Filing date | Jun 4, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Jun 4, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ratchet wrench in which a lamp unit and a battery set are mounted inside the ratchet member, and a rotary cap-controlled switch assembly is coupled to one extension tube of the ratchet member and rotated forward/backwards on the extension tube to close/open the circuit of the lamp unit and the battery set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.