Rotary expansible chamber devices – Abutment or vane has concurrent rocking and radially sliding...
Patent
1975-04-02
1977-04-26
Husar, C. J.
Rotary expansible chamber devices
Abutment or vane has concurrent rocking and radially sliding...
418137, 418253, 418255, F03C 300
Patent
active
040198405
ABSTRACT:
Vane type rotary pumping device comprising a stationary housing member having a cavity extending therethrough, a rotor disposed in the cavity for rotation therein and having a plurality of radial openings therein, and vane members extending in each of the openings for sliding movement therein and rotary movement along with the rotor. An inlet passage and an outlet passage formed on spaced apart portions of the housing member communicate with the cavity. The cavity includes a circumferential channel extending from the inlet passage to the outlet passage to serve as a fluid pumping chamber. The vane members extend radially outwardly of the rotor and in pressure sealing relationship with the channel while being rotated through the channel by the rotor to pump fluid from the inlet passage to the outlet passage. The cavity also includes a circumferential wall portion between the outlet passage and the inlet passage over which the rotor passes with the vane members retracted within the rotor. A circumferential groove extending in the circumferential wall portion provides communication between radial openings simultaneously passing the wall portion to relieve pressure therein and to thereby facilitate radial movement of the vane members.
REFERENCES:
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patent: 3213803 (1965-10-01), Meyer
patent: 3322335 (1967-05-01), Partaid
patent: 3834841 (1974-09-01), Falcai et al.
Flocks Karl W.
Husar C. J.
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