Rotary expansible chamber devices – Positively actuated vane
Patent
1984-08-20
1986-05-20
Smith, Leonard E.
Rotary expansible chamber devices
Positively actuated vane
F04C 200
Patent
active
045898294
ABSTRACT:
A vane pump comprises a rotor mounted on a rotary shaft in coaxial therewith, a plurality of vanes held in the circumferential part of the rotor so as to be slidable in the radial direction, a housing having an inner space of an elliptical form in cross section, in which the top ends of the vanes projecting from the rotor by centrifugal force resulted from the revolution of the rotor move in slide-contact with the inner wall of the housing, two parts in the small radius sections of the elliptical inner space being close to the outer surface of the rotor, while two parts in the large radius sections having cylindrical inner surfaces which form two operating chambers in association with the rotor, and intake and discharge ports being respectively communicated with the operating chambers.
REFERENCES:
patent: 2804261 (1957-08-01), Oishei
patent: 2924178 (1960-02-01), Hogan
patent: 3099387 (1963-07-01), Beckfield
patent: 3381891 (1968-05-01), Bellmer
patent: 3412686 (1968-11-01), Eickmann
patent: 4098256 (1978-07-01), Sieck
patent: 4183352 (1980-01-01), Spencer
patent: 4290736 (1981-09-01), Bernasconi
Mitsubishi Denki & Kabushiki Kaisha
Obee Jane E.
Smith Leonard E.
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