Rotary vane pump with plural outlet ports and relationship for c

Details Rotary vane pump with plural outlet ports and relationship for c Rotary vane pump with plural outlet ports and relationship for c

1985-10-30

1987-04-21

Vrablik, John J.

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418150, 418225, F01C 1344

Patent

active

046592962

ABSTRACT:
The cam surface of a roller-type positive displacement pump providing an inlet port and two outlet ports has on circumferentially opposite sides of at least one of the outlet ports a profile such that the difference between the squares of the radii at the instantaneous points of contact therewith of the two rollers which serve to seal the port at said opposite sides is a constant. The portions of the cam surface at oposite sides of such an outlet port have radii relative to the axis of rotation of the rotor which decrease progressively in the direction of rotation of the rotor.

REFERENCES:
patent: 2832199 (1958-04-01), Adams et al.
patent: 3025802 (1962-03-01), Browne
patent: 3066608 (1962-12-01), Livermore

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