Bit attaching arrangement for power tool
US6224304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Mar 9, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/306608
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A bit attaching arrangement for a power tool has a collet nut threadably engaging a rotatably driven shaft of the power tool. The collet nut has a plurality of slots positioned on an outer peripheral surface. A first gear is disposed on the shaft so that rotation of the first gear causes rotation of the shaft. An actuating member having a second gear associated therewith is attached to the housing of the power tool. The actuating member also has a slot-engaging extension associated therewith. The actuating member is positionable between a first position and a second position. In the first position, the second gear engages the first gear and the extension engages one of the slots of the collet nut such that rotation of the actuating member results in rotation of the shaft while maintaining the collet nut at a generally fixed rotational location. In a second position, the first and second gears do not engage one another and the extension does not engage any of the slots of the collet nut such that the shaft can be freely rotated during operation of the power tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.