Power driven screwdriver
US5209308A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 1992 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Oct 8, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B21/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power driven screwdriver includes a device interposed between a spindle and a housing for preventing rotation of the spindle. The device includes a first member and a second member. The first member is disposed on the spindle and is rotatable therewith. The second member is fixed to the housing and axially opposed to the first member. The first and the second members include a first conical surface and a second conical surface, respectively. The first and the second conical surfaces have central axes parallel to a central axis of the spindle, respectively, and are opposed to each other. At least one of the central axes of the first and the second conical surfaces is displaced from the central axis of the spindle. The first conical surface contacts the second surface when the spindle is positioned at a first position where a clutch mechanism disconnects the spindle from a motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.