Rotatable chuck
US7478979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2005 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jul 16, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/953
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chuck is provided with a body, a plurality of jaws and an adjustment ring. The adjustment ring is threadably engaged with the jaws. When the adjustment ring is rotated in one direction, the jaws tighten by moving closer to each other. When the adjustment ring is rotated in the opposite direction, the jaws loosen by moving away from each other. An impact member is also provided for engagement with the adjustment ring. When the drive shaft of the power tool is rotated, the adjustment ring impacts against the impact member. As a result, the adjustment ring and the body of the chuck rotate relative to each other causing the jaws of the chuck to loosen or tighten depending on the direction the drive shaft is rotating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.