Rotary pump

Details Rotary pump Rotary pump

1999-06-07

2000-05-16

Freay, Charles G.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417313, 417441, 184 616, 4182064, 4182061, 418 47, F04B 4900, F04C 1700

Patent

active

060628278

ABSTRACT:
A rotary pump includes a housing having an inner surface that confines a rotor chamber. Two parallel shafts are mounted pivotally on the housing and extend axially through the rotor chamber. Two meshing multi-lobe rotors are mounted on the shafts within the rotor chamber, respectively. Each of the rotors has a plurality of lobes projecting radially therefrom toward the inner surface without contacting the inner surface.

REFERENCES:
patent: 2243874 (1941-06-01), Lysholm
patent: 3810723 (1974-05-01), Johnson
patent: 3988083 (1976-10-01), Shimizu et al.
patent: 4594992 (1986-06-01), Nakamura et al.
patent: 4595349 (1986-06-01), Preston et al.
patent: 4712442 (1987-12-01), Baika et al.
patent: 4714418 (1987-12-01), Matsubara et al.
patent: 4770609 (1988-09-01), Uchida et al.
patent: 4891820 (1990-01-01), Rando et al.
patent: 5090879 (1992-02-01), Weinbrecht

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