Hand tool aided screwdriver
US7055410B2 · kind B2 · utility
9Cited by
12References
3Claims
0Family size
Inventor
Key dates
| Filing date | Oct 12, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Jan 13, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B15/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hand tool aided screwdriver related to a ratchet screwdriver that allows operation in changed direction includes a handle, a ratchet holder, a socket, and a chock. The ratchet holder is inserted into a chamber in the handle. The socket is inserted into the ratchet holder. The ratchet holder is provided with an outer ratchet to engage with an inner ratchet in the chock. The chock having a hexagon outer surface to be held by an open end of a spanner to apply force together with the screwdriver in mounting or dismounting a work piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.