Controllable vane pump

Details Controllable vane pump Controllable vane pump

1982-05-19

1984-03-20

Vrablik, John J.

Rotary expansible chamber devices

With changeable working chamber magnitude

Spring or fluid biased movable member

418 27, 418 30, F04C 200, F04C 1504

Patent

active

044378190

ABSTRACT:
A control ring in sliding contact with the radially outer ends of fluid displacing vanes on a pump rotor, is angularly adjustable about a pivot formation in a pump housing on one radial side of the rotor opposite a limited sealing surface on the housing having a center of curvature on the rotor axis. A sealing element pivotally mounted on the control ring is biased into wiping contact with the sealing surface to divide the pump housing into inlet and outlet pressure chambers.

REFERENCES:
patent: 2433484 (1947-12-01), Roth
patent: 2658456 (1953-11-01), Wahlmark
patent: 3642388 (1972-02-01), Maistrelli
Erkki Koivunen and Philip Le Bar, "A New Automatic Transmission for Improved Fuel Economy General Motors THM125" SAE Technical Paper Series (Jun. 11-15, 1979).

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