Safety switch
US4454392A · kind A · utility
14Cited by
4References
22Claims
0Family size
Inventors
Key dates
| Filing date | Oct 20, 1982 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Oct 20, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H27/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A safety switch comprising a drive and locking device. A key is used to operate the drive. The drive comprises a ram longitudinally moved by the key. The locking device includes a blocking member for the ram which can only be released by the key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.