PRESSURE CONTROL UNIT
United States Patent 3493006

Inventors:
Hoffman, Bernard L.
Publication Date:
02/03/1970
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Assignee:
Krause, Ass F. A.
Primary Class:
137/115.260
Other Classes:
137/625.370, 137/599.050, 137/493.800, 137/625.300, 137/488
International Classes:
B21D24/02; B21D24/14; B30B15/16; B30B15/22; F15B11/02; B21D24/00; F15B11/00; F16K17/26; F16K31/12; G05D11/02
US Patent References:
3195571Multiple spool valve assembly
3234853Hydraulic cylinder actuator
2930398High capacity combination regulator and check valve




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