Vane-piston pump

Details Vane-piston pump Vane-piston pump

1982-07-13

1984-05-29

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Seal element between working member and vane

418241, F04C 200, F04C 1500, F04C 2700

Patent

active

044512180

ABSTRACT:
A vane-piston pump having a rotor supported eccentrically in a pump housing. The rotor is provided with slits for the passage through it of the vanes, and sealing strips are disposed at either side of the slits. The vanes slide along these sealing strips. Each sealing strip is subjected to the force of its own spring, and under the force of this spring, each sealing strip is pressed against the vanes.
In this manner the spring forces can be kept smaller, so that friction is reduced. The vane-piston pump is preferably used in motor vehicles for generating compressed air in order to operate exhaust-gas treatment apparatus.

REFERENCES:
patent: 2625112 (1953-01-01), Stubau
patent: 3485179 (1969-12-01), Dawes

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