Electric switches
US5428336A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2037/5463
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermally-responsive switch, designed to go open circuit in response to relatively low overload currents of the order of 2 amps and below, comprises a moulded plastics body capturing therein first and second simple copper wire terminals and having an internal chamber wherein a snap-acting bimetal blade of very low thickness is spot-welded to one of the wire terminals and carries a silver contact which co-operates in switching operations with the other wire terminal, the internal construction of the switch body chamber being arranged to provide physical support to the bimetal blade by way of the respective one of the wire terminals to which the bimetal blade is secured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.