Quick clamp
US5988957A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Dec 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/30952
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power tool with a quick release tool holder has a spindle with a central bore to receive a tool, a first aperture and second aperture extend into the central bore. A ball is in each of the first apertures. The ball locks the tool against axial movement. An elongated roller is in each of the second apertures. The roller prohibits rotation of the tool within the spindle. A first sleeve is fixed with the spindle. The first sleeve maintains the rollers in the apertures. A biasing member axially biases the rollers. A second sleeve is circumferentially positioned about the spindle and axially movable on the spindle. The second sleeve has a surface in contact with the balls. Also, a biasing member is provided to provide a force on the second sleeve such that the sleeve is moved against the force of the spring to enable insertion or removal of the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.