Thermostat-controlled electric switch
US4500760A · kind A · utility
2Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1982 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Sep 21, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H35/2607
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A thermostatic switch with a pair of switch contacts opened and closed by a first pivotably mounted lever urged in one direction by a spring and in the other by a bellows to alternately open and close the switch to operate a compressor. A manual switch can be rotated to vary the spring force through a cam follower and is also movable in and out of the housing. When moved into the housing a second lever is pivoted to engage the first lever and the cam follower so the force required by the bellows to pivot the first lever is such that defrosting occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.