Rotary expansible chamber devices – Interconnected vanes – Integrally connected
Patent
1989-04-11
1990-09-18
Vrablik, John J.
Rotary expansible chamber devices
Interconnected vanes
Integrally connected
F04C 18344
Patent
active
049574205
ABSTRACT:
A vane pump provided with a center housing, front and rear housings holding the center housing therebetween, a rotor eccentrically disposed in the center housing and rotatably supported by the front and rear housings, a single vane diametrically movably inserted in the rotor, and a guide for regulating the projection of the vane out of the rotor. The guide comprises an axle provided centrally on each side of the vane, a circular hole formed in the inner surface of each of the front and rear housings and having a center positioned just in the middle between both centers of the rotor and the center housing, and a rolling bearing interposed between the axle and the circular hole to guide the axle in a circular path having a diameter equal to the eccentricity of the rotor. The center housing has an inner surface with a cross-sectional profile that is firstly drawn by the tip of the vane when the rotor turns and then expanded by a preselected clearance.
REFERENCES:
patent: 883224 (1908-03-01), Neville
patent: 3377851 (1968-04-01), Komiya et al.
patent: 3381668 (1968-05-01), Agren
patent: 4133617 (1979-01-01), Reynaud
patent: 4385873 (1983-05-01), Richter
Cavanaugh David L.
Nippon Piston Ring Co. Ltd.
Vrablik John J.
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