Blocking-vane pump

Details Blocking-vane pump Blocking-vane pump

1997-05-30

1999-11-23

Vrablik, John J.

Rotary expansible chamber devices

Positively actuated abutment

Spring biased

F04C 2356

Patent

active

059890029

ABSTRACT:
The present invention relates to a blocking-vane pump having a casing which contains a rotor and in the wall of which there are arranged grooves which receive in each case one blocking vane and which are pressed by a spring against a circumferential surface of the rotor which has control surfaces separated from each other by separating regions. According to the invention, at least four blocking vanes (30) are provided and, distributed over the circumferential surface (20) of the rotor (16), a number of control surfaces (22) amounting to a multiple of 2, two control surfaces (22) being in each case arranged opposite each other and developed identical and the number of control surfaces (22) being greater than the number of blocking vanes (30).

REFERENCES:
patent: 2786421 (1957-03-01), Prendergast
patent: 3276386 (1966-10-01), Fanshawe
patent: 3782867 (1974-01-01), Gerlach et al.
English translation of relevant portions of DE 31 22 648.
English translation of relevant portions of DE 29 13 110.

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