Pumps – Three or more cylinders arranged in parallel – radial – or... – Motor driven
Patent
1986-07-25
1988-03-08
Croyle, Carlton R.
Pumps
Three or more cylinders arranged in parallel, radial, or...
Motor driven
417343, 417347, F04B 100, F04B 2700
Patent
active
047297204
ABSTRACT:
An apparatus for generating high hydraulic pressure with reduced pulsations, comprising a valve case attached to a motor main body and having a plurality of pneumatic cylinder units arranged therearound, a rotary valve rotatably fitted in the valve case, links each having one end pivoted to the piston of each pneumatic cylinder unit and the other end connected to an eccentric shaft portion provided on a crank shaft or the rotary valve, and hydraulic bases connected directly to the pneumatic cylinder units individually, the hydraulic pressure fluid being caused to flow-out from the hydraulic bases in succession by the rotation of the rotary valve, in such a manner that when the outflow of the fluid from one of the hydraulic bases is about to cease, the fluid starts to flow out from another hydraulic base, and when the flows of hydraulic fluid from the two hydraulic bases combine, the pulsation of the flow from one base is offset by that of the other single flow, making it possible for the hydraulic fluid to uniformly flow out without pulsation.
REFERENCES:
patent: 2435611 (1948-02-01), Sejarto
patent: 3295451 (1967-01-01), Smith
patent: 4153376 (1979-05-01), Neier
patent: 4385869 (1983-05-01), Omata
patent: 4541779 (1985-09-01), Birdwell
Croyle Carlton R.
Osaka Taiyu Co., Ltd.
Stout Donald E.
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