Vane pump with flexible tongue valve

Details Vane pump with flexible tongue valve Vane pump with flexible tongue valve

1987-06-08

1988-07-19

Freeh, William L.

Rotary expansible chamber devices

Miscellaneous

1375135, 137855, F16K 1514, F04C 2344

Patent

active

047581417

ABSTRACT:
A vane pump having a plurality of working chambers each of whose volume changes from a minimum to a maximum value and back again during one revolution, and wherein intake and delivery ports open axially into the working cells and are formed with cross sections adapted for fluid conveyance without internal compression. Such compression is achieved by a valve plate which forms a non-return and is formed with a resilient tongue valve which, commencing from the starting end of the delivery port controls, upon proper pump operation, about two-thirds of the cross section of the mouth of the delivery port.

REFERENCES:
patent: 1555192 (1926-09-01), Dennedy
patent: 2151746 (1939-03-01), Cody
patent: 3256831 (1966-06-01), Eickmann
patent: 3306226 (1967-02-01), Walter
patent: 4514157 (1985-04-01), Nakamura
patent: 4696263 (1987-09-01), Boyesen

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