Magnetic retaining device for machine tool
US7224251B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2004 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Apr 5, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B11/002
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A magnetic retaining device for attaching a work piece to a machine tool includes a magnetic housing having two housing members secured together and having different magnetic poles, and a magnetic core rotatably received in the magnetic housing and having two core members having different magnetic poles. The magnetic force of the housing members may be offset by the core members when the core members are received in the housing members of different magnetic poles, and may be increased when the core members are received in the housing members of the same magnetic poles, in order to selectively and stably retain the work piece to the machine tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.