Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1990-04-17
1992-08-04
Bertsch, Richard A.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417218, F04B 130, F04B 2102
Patent
active
051353628
ABSTRACT:
A hydraulic axial piston pump has a rotating cylindrical barrel which defines pumping chambers and pistons reciprocating in the pumping chambers. A swash plate controls the length of travel of the pistons. During a part of each rotation of the barrel a piston will draw fluid into its complementary pumping chamber and during another part of each such rotation the piston will force fluid under pressure out of its complementary pumping chamber. Each chamber has an inlet valve which is closed when the pressure in the chamber exceeds the inlet pressure. Each chamber also has an outlet valve which is closed when the pressure in the outlet exitway exceeds the pressure in the chamber. High pressure fluid from the chambers is fed to shoes that ride on the swash plate to provide a fluid cushion between the shoes and the swash plate thus reducing friction.
REFERENCES:
patent: 815911 (1906-03-01), Eddy
patent: 2138194 (1938-11-01), Pfauser
patent: 2619041 (1952-11-01), Born
patent: 2737899 (1956-03-01), Bonnette et al.
patent: 2913911 (1959-11-01), Gilkey
patent: 2915985 (1959-12-01), Budzich
patent: 2929371 (1960-03-01), Rank
patent: 2940323 (1960-05-01), Cousins
patent: 3018737 (1962-01-01), Cook
patent: 3077118 (1963-02-01), Robbins
patent: 3304886 (1967-02-01), Roberts
patent: 4007663 (1977-02-01), Nagatomo et al.
patent: 4102607 (1978-07-01), Benson
patent: 4520712 (1985-06-01), Hovorka et al.
patent: 4642032 (1987-02-01), McBeth
patent: 4690036 (1987-09-01), Kosaka
patent: 4813852 (1989-03-01), Ikeda et al.
patent: 4867650 (1989-09-01), Ikeda et al.
Public Use: Aircraft Axial Piston Pump. Ex. A.
Public Use: Commercial Checkball Pump. Ex. B.
Bertsch Richard A.
Hall William D.
Korytnyk Peter
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