Depth adjusting device for screwdrivers
US4762035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Sep 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B21/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A depth adjusting device for a screwdriver which is adapted to control within predetermined desired limits the depth to which a fastener may be driven into a work. The depth adjusting device comprises a locking ring retentively engaging the tool housing, and an adjusting sleeve axially movably carried by the locking ring. The locking ring has a spiral ridge formed on the inner periphery thereof, and the adjusting sleeve has a spiral groove formed peripherally about the rear portion thereof and engageable with the spiral ridge of the locking ring. The locking ring also has an axial slit formed therein and a pair of lugs formed across the slit. A thumb screw is provided to tighten the lugs and thence to retain the locking ring on the adjusting sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.