Pumps – Three or more cylinders arranged in parallel – radial – or... – Radial cylinders
Patent
1977-05-16
1981-07-07
Croyle, Carlton R.
Pumps
Three or more cylinders arranged in parallel, radial, or...
Radial cylinders
417456, 417464, F04B 104
Patent
active
042772281
ABSTRACT:
A radial piston pump comprises a housing bounding a suction chamber therein and at least one valve piston unit mounted in the housing. The valve piston unit includes a pressure valve defining a pressure chamber, a movable piston having an axial passage operatively communicating the suction chamber with the pressure chamber, and a suction valve located in the axial passage of the piston. The suction valve is operative for opening and closing the axial passage of the piston so as to establish and interrupt the above communication, respectively. The piston performs a suction stroke and a working stroke, and a valve member of the suction valve is open during the suction stroke of the piston. The valve member has such a mass that it is opened by an accelerative force produced during the above suction stroke of the piston. The piston is moved by an eccentric mounted on a rotatable shaft, which eccentric has a circumferential groove operatively communicating the suction chamber with the axial passage of the piston.
REFERENCES:
patent: 661603 (1900-11-01), Gold
patent: 956050 (1910-04-01), Dickinson
patent: 1944124 (1934-01-01), Goodman
patent: 2679808 (1954-06-01), Thun
patent: 3092037 (1963-06-01), Rhodes
patent: 3320902 (1967-05-01), Pashke
patent: 3682572 (1972-08-01), Yarger
patent: 3744380 (1973-07-01), Steiger
patent: 3912421 (1975-10-01), Gelin
patent: 3945766 (1976-03-01), Gelin
Croyle Carlton R.
G. L. Rexroth GmbH
Look Edward
Striker Michael J.
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