Electromagnetic relays
US4445079A · kind A · utility
11Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1981 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Nov 19, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H61/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved electromagnetic relay having a wafer of material with positive temperature coefficient of resistivity (PTC) mounted inside the relay combines a sturdy construction with low manufacturing costs adapting the relay for use as a starting relay for electric motors of compressors. For this purpose, the magnetic members of the relay are incorporated in the electrical relay circuit and are provided with attachments for plug-on connections of the relay to circuit pins of motor-compressor units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.