PUMPING CHAMBER DECOMPRESSION
United States Patent 3457873
US Patent References:
Hydraulic pump or motor
- - 3199461

Flat valve for hydraulic machine
- - 3238888

Hydraulic motor and pump
- - 2155455

Pump or motor
- - 2298850

Fluid pumps or motors
- - 3092035


Inventors:
Fischer, Howard E.
Ward, Harold R.
Publication Date:
07/29/1969
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Assignee:
SPERRY RAND CORP
Primary Class:
91/6.500
Other Classes:
91/499
International Classes:
F04B1/20; F04B1/02
US Patent References:
3094078Switching devices for hydraulic pumps and motors
3249061Pump or motor device
3362342Hydraulic apparatus
Foreign References:
GB684551A




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