Protected refrigerator compressor motor systems and motor protectors therefor
US4706152A · kind A · utility
57Cited by
10References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1985 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Nov 4, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H81/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor protector having a thermostat metal element thermally coupled to an electrical motor in a refrigerator compressor motor system has a heater responsive to motor current thermally coupled to the thermostat metal element and has an improved component arrangement to provide locked rotor and ultimate trip protection for the motor without requiring calibration of the operating temperature for the protector after assembly or after incorporation in the motor system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.