Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1986-12-29
1987-09-22
Croyle, Carlton R.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417222, 60452, F04B 126
Patent
active
046952306
ABSTRACT:
A variable displacement pump system including a pressure compensator for operating a pump adjusting mechanism to vary the displacement by applying hydraulic fluid to the pump adjusting mechanism and a spring biased piston applying a yielding force to the pump adjusting mechanism opposing the pressure compensator. A load sensing valve senses the pressure of the load to which fluid is supplied from the pump through a system valve and applies this load pressure to work in unison with the spring biased piston for purposes of urging the pump towards its maximum displacement.
REFERENCES:
patent: 2502546 (1950-04-01), Adams
patent: 3067693 (1962-12-01), Lambeck
patent: 3809500 (1974-05-01), Staudenrausch
patent: 3949649 (1976-04-01), Bosch
patent: 3987624 (1976-10-01), Cooke et al.
patent: 4325215 (1982-04-01), Yamamoto
Croyle Carlton R.
Neils Paul F.
Vickers Incorporated
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