Delayed-action thermal relay
US4527142A · kind A · utility
2Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1983 |
| Grant date | Jul 2, 1985 |
| Priority date | — |
| Expiry date | Sep 16, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H61/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A delayed-action thermal relay, particularly for starting single-phase induction motors, comprises a case of insulating material, a first, a second, and a third terminal within the case, an actuator unit consisting of a heating element of a material with positive temperature coefficient and of a bimetal member, and first and second contacts that are normally closed carried by the bimetal and by the third terminal respectively, said actuator unit being forcibly and adjustably inserted between the first and second terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.