Power screwdriver
US5947210A · kind A · utility
29Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Sep 7, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/141
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power screwdriver has a tool body, a motor, a drive member rotatably driven by the motor, a spindle rotatably mounted on the tool body and a clutch mechanism provided between the drive member and the spindle. The clutch mechanism includes an engaging clutch and a synchronizer device. The synchronizer device is operable to rotate the spindle at a predetermined speed that is substantially equal to or less than the rotational speed of the drive member, prior to connection of the engaging clutch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.