Vacuum operated electrical switch or the like
United States Patent 3233059
US Patent References:
Pressure-controlled device
- - 1684530

Electric starting device
- - 2143103

Sealed switch
- - 2367441

Thermal switch
- - 2496229

Fluid pressure operated switch
- - 2501867


Inventors:
Pridham Jr., Donald C.
Palmer, Reed A.
Morris, Louis P.
Publication Date:
02/01/1966
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Assignee:
ROBERTSHAW CONTROLS CO
Primary Class:
200/83N
Other Classes:
200/46, 200/83R, 200/241
International Classes:
D06F33/10; G05B19/44; H01H33/66; H01H35/30; H01H35/34; H01H43/08; D06F33/00; G05B19/00; H01H35/24; H01H43/00
US Patent References:
2762895Constant temperature device
2798130Electric switch devices
2824183Cable connectors or couplers embodying novel circuit making and breaking devices
3009032Sealed pressure switch
3018353Current carrying spring member