Variable capacity radial piston pump

Details Variable capacity radial piston pump Variable capacity radial piston pump

1985-04-09

1987-03-24

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

92 121, F04B 106

Patent

active

046522158

ABSTRACT:
A variable capacity radial piston pump is disclosed, in which the radially outer ends of the pistons are constrained by engagement with the radially inner surface of a cam ring assembly that includes a radially inner ring, a radially outer ring, and rollable bearings between the inner and outer rings. The cam ring is shiftably mounted in the pump housing so that its magnitude of eccentricity relative to the pump rotor can be varied in order to vary the magnitude of suction and compression forces generated in the working fluid in the rotor chambers associated with the respective pistons. Several mechanisms for affecting the cam ring/rotor eccentricity variation are shown and described.

REFERENCES:
patent: 2506974 (1950-05-01), Sorensen
patent: 2539571 (1951-01-01), Deschamps
patent: 2838003 (1958-06-01), Joy
patent: 3511135 (1970-05-01), Ife et al.
patent: 3756749 (1973-09-01), Aldinger
patent: 3782245 (1974-01-01), Aldinger
patent: 3784328 (1974-01-01), Pedersen

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