Adjustable volume vane-type pump

Details Adjustable volume vane-type pump Adjustable volume vane-type pump

1979-03-20

1981-03-31

Croyle, Carlton R.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

418 26, 418 31, F04B 4908

Patent

active

042590396

ABSTRACT:
An adjustable volume vane-type rotary pump is disclosed in which volume control is obtained by adjusting the eccentricity of a control ring against which the vanes run. The control ring is urged towards its position of maximum eccentricity by a spring and position control of the ring is obtained by a piston and cylinder system operating in opposition to the spring. Operation of the piston and cylinder assembly is dependent on the dynamic pressure of fluid delivered by the pump so that when a certain speed of rotation is achieved the pressure exerted by the piston and cylinder system will be sufficient to overcome the force of the spring and adjust the position of the control ring.

REFERENCES:
patent: 2600632 (1952-06-01), French
patent: 2823614 (1958-02-01), Lapsley
patent: 2975717 (1961-03-01), Rynders et al.
patent: 3079864 (1963-03-01), Drutchas et al.
patent: 3107628 (1963-10-01), Rynders et al.
patent: 3756749 (1973-09-01), Aldinger

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