Eccentric positioning means for a reversible pump

Details Eccentric positioning means for a reversible pump Eccentric positioning means for a reversible pump

1978-05-05

1979-10-16

Vrablik, John J.

Rotary expansible chamber devices

Self-acting unidirectional flow with reverse rotation or...

64 30E, 192 41R, 192 91A, F04C 106, F04C 1504, F16D 702

Patent

active

041711920

ABSTRACT:
A spring biased member is disposed between the facing surfaces of the reversing eccentric and the rotor of a reversible, unidirectional flow pump. The member is keyed to the eccentric and applies frictional torque to the eccentric from the rotor to drive the eccentric to the proper position as determined by a fixed stop in accordance with the rotor's rotation. The member extends generally tangentially beyond either side of the contact points on the circular rotor face and presents a wedge-shaped confined space to the lubricant on the rotor face. The lubricant is driven into the wedge by the rotating rotor and raises the member from intimate contact with the rotor surface to maintain a thin lubricant film therebetween. This film of lubricant thus separates the member from the rotor face whenever there is relative motion between them to reduce wear on the otherwise contacting parts.

REFERENCES:
patent: 1165772 (1915-12-01), Garrand
patent: 2151482 (1939-03-01), Neeson
patent: 2302110 (1942-11-01), Dow et al.
patent: 2652135 (1953-09-01), Flaton
patent: 3034447 (1962-05-01), Brundage
patent: 3165066 (1965-01-01), Phelps et al.
patent: 3303783 (1967-02-01), Neubauer
patent: 3462974 (1969-08-01), Riedel et al.

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