Safety switch
US6903290B2 · kind B2 · utility
2Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2003 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Nov 20, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H23/205
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A safety switch includes an activation key housed in a casing, a pair of contact-holding elements, and a triad of electric terminals. The contact-holding elements oscillate between a passive position and an active position, the positions being imposed by a corresponding position of the activation key. The contact-holding elements are mutually electrically connected through conductive elements that, when operation of the switch takes place in a condition of failure, can move with respect to one another for relative displacement of mating surfaces to determine a loss of contact between the contact-holding elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.