Safety switch
US7928330B2 · kind B2 · utility
6Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Jun 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H27/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a safety switch having a housing configured to receive a removable key, and a mechanism arranged to be operated when the key is moved from an engaged position to a partially disengaged position, the mechanism being arranged to cause a signal to pass to a separate apparatus, wherein the safety switch further comprises a lock which is controlled by the separate apparatus and is arranged to prevent the key from being fully disengaged from the safety switch until a signal has been received in response from the separate apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.