Ratchet screwdriver and method of making same
US7181997B1 · kind B1 · utility
15Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2005 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jan 18, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4984
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A ratchet screwdriver and method of making same wherein there is a handle and there is a ratchet gear and pawls inside the handle. An adjuster is inside the handle and is movable by a tool extending into the handle for positioning the adjuster relative to the gear and thereby eliminating play between the gear and the handle. Ball bearings are interposed between the handle and the gear and the bearings rotatably support the gear and transmit the anti-play forces that act on the gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.