Connectable drive for a screwdriver spindle
US5101947A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1990 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Apr 4, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B23/141
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A device for driving a screwdriver spindle has a claw clutch and an over-detent clutch. The two clutches are arranged coaxially to each other and have coupling parts which are displaceable in an axial direction. Upon a first response of the over-detent clutch, the claw clutch is disengaged, a correspondingly axially displaceable coupling part of the claw clutch is then locked in a disengaged position by a disengageable safety which is simply a radially elastically expandable clamping sleeve which is connected to the claw-clutch and has a detent projection which protrudes radially inward. The screwdriver spindle on which the clamping sleeve is arranged has two circumferential grooves for engagement of the detent projection, the axial center-to-center distance of which is greater than the coupling stroke of the claw clutch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.