Title:
Sludge exclusion diaphragm switch
United States Patent 3359386
Inventors:
Howard, William F.
Publication Date:
12/19/1967
Export Citation:
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Assignee:
HOWARD ELECTRIC COMPANY
Primary Class:
200/83Y
Other Classes:
200/83R
International Classes:
H01H3/24; H01H35/34; H01H3/00; H01H35/24
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US Patent References:
3176095Control switch having isolated fluid actuator
2653552High-pressure pump
2435716Control structure