Rotary expansible chamber devices – Grooved abutting cylinder-rotating member end surfaces – Groove communicates with vane slot
Patent
1985-04-09
1986-08-05
Smith, Leonard E.
Rotary expansible chamber devices
Grooved abutting cylinder-rotating member end surfaces
Groove communicates with vane slot
418268, F04C 1800, F04C 2900
Patent
active
046040412
ABSTRACT:
A rotary vane pump is disclosed which comprises a cylindrical housing, and a cylindrical rotor eccentrically mounted for rotation within the housing. The rotor includes a slot mounting a pair of oppositely oriented hook-shaped vanes, so as to define a hook space adjacent each end of the overlying vanes. A fluid, such as lubricating oil, is delivered to each hook space during that portion of its rotation shortly before its bottom dead center position, and the delivered fluid is pressurized during that portion of its rotation shortly after its bottom dead center position to assist in moving each vane outwardly from its bottom dead center position.
REFERENCES:
patent: 397516 (1889-02-01), Powers
patent: 704638 (1902-07-01), Hodgson
patent: 2410596 (1946-11-01), Bradford
patent: 3598510 (1971-08-01), Aoki
Hertell Siegfried
Lange Robert
Barmag Barmer Maschinenfabrik Aktiengesellschaft
Obee Jane E.
Smith Leonard E.
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