Pumps – Three or more cylinders arranged in parallel – radial – or... – Radial cylinders
Patent
1991-11-14
1992-12-01
Smith, Leonard E.
Pumps
Three or more cylinders arranged in parallel, radial, or...
Radial cylinders
417427, F04B 4900
Patent
active
051674939
ABSTRACT:
A positive-displacement type pump system, such as a fixed-cylinder type radial piston pump system, includes a common pump housing formed with a plurality of cylinders, and a plurality of pistons slidably received in the respective cylinders and cooperating therewith to form a plurality of pump units. A first throttle valve is disposed in a first suction passage of a first group of the pump units for operating a first actuator, for adjusting the flow rate of a working fluid to be supplied to the these pump units. A second throttle valve is disposed in a second suction passage of a second group of the pump units for operating a second actuator, for adjusting the flow rate of the working fluid to be supplied to the pump units of the second group independently from those of the first group. The pump units of the first and second groups can thus be individually adjusted in terms of the respective delivery volumes.
REFERENCES:
patent: 1636258 (1927-07-01), Svartz
patent: 3000319 (1961-09-01), Tuck
patent: 4430047 (1984-02-01), Ilg
patent: 4690620 (1987-09-01), Eickmann
patent: 5032065 (1991-07-01), Yamamuro et al.
patent: 5094597 (1992-03-01), Takai et al.
Nissan Motor Co,. Ltd.
Smith Leonard E.
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