Rotary pump

Details Rotary pump Rotary pump

1992-07-08

1994-05-03

Bui, Thuy M.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

F16H 5900

Patent

active

053082877

ABSTRACT:
The invention relates to a rotary pump for use in particular in a continuously variable transmission. The rotary pump comprises a drive shaft with a rotor, in radial grooves of which movable displacement elements are disposed and slide along the radial inner side of a surrounding cam ring, forming variable pump chambers. The rotor is bounded at both long sides by end faces, an end plate being provided with some play between at least one end face and the rotor. One or more seals are provided between the end face and the end plate, to seal the supply and/or discharge apertures of the pump in order to prevent leakages between the end plate and the end face.

REFERENCES:
patent: 3645654 (1972-02-01), Niemiec et al.
patent: 3718411 (1973-02-01), Pollman
patent: 3752609 (1973-08-01), Niemiec et al.
patent: 4376620 (1983-03-01), Colston
patent: 4747808 (1988-05-01), Moan
patent: 4955260 (1990-09-01), Oshidari

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