Thermal switch
US4646054A · kind A · utility
2Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jun 12, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H37/5409
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermal switch for breaking an electrical circuit to prevent overheating s described. The thermal switch includes a bimetallic thermocouple in the form of a snap disc and a leaf spring. The leaf spring supports an electrical contact. When the leaf spring is in its stressed position, the electrical contact keeps an electrical circuit closed. When the temperature rises too high, the snap disc snaps in a direction which causes the leaf spring to move into its unstressed position, thereby opening the circuit. When the temperature has decreased, the switch can be reset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.