Pressure regulator for pumps
United States Patent 2426639
US Patent References:
Hydraulic pump
- - 1932921

/1076915.html
- - 1076915

Diaphragm pump
- - 1719060

/0399548.html
- - 0399548

Pressure control mechanism
- - 2150460


Inventors:
O'leary, Charles M.
Publication Date:
09/02/1947
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Assignee:
O'leary, Charles M.
Primary Class:
417/279
Other Classes:
137/505.250, 417/458, 417/441
International Classes:
F02M59/14; F04B43/02; F04B43/067; F04B49/035; F02M59/00; F04B43/06; F04B49/02
US Patent References:
0475217
0343125
0319896
1725539Combination pressure regulating and relief valve
Foreign References:
CH206504A
DE571474C