Safety chuck
US9981823B1 · kind B1 · utility
0Cited by
8References
3Claims
0Family size
Inventors
Key dates
| Filing date | Dec 8, 2015 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Nov 27, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2402/51
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety chuck mounted to equipment that process web material is provided. The safety chuck is provided with a die spring connecting a moveable jaw with a spindle, said spring urging the moveable jaw into a fully closed position. A number of magnets mounted on a mounting flange will engage the moveable jaw, overcoming the spring's force and holding the moveable jaw in a fully open position. Rotation of the spindle releases the magnets allowing the spring to force the moveable jaw back into a fully closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.