Spherical gear pump

Details Spherical gear pump Spherical gear pump

1982-11-17

1985-09-10

Vrablik, John J.

Pumps

Condition responsive control of drive transmission or pump...

Adjustable cam or linkage

417462, 417481, 91197, 92120, F04B 1902, F04B 4908, F04C 2100

Patent

active

045403430

ABSTRACT:
A spherical gear pump comprises a housing with a first longitudinal axis, a spherical seat, an inlet and outlet adjacent the seat, inlet and outlet passages communicating with the inlet and outlet and adapted for connection to a source of liquid and a liquid load. A hemispherical gear is rotatively mounted within the seat and includes a plurality of peripherally spaced radial gear teeth and a drive shaft for rotation about the first axis. A hemispherical cam is adjustably positioned within the spherical seat having an arc less than 180.degree., and radial cam surfaces facing the spherical gear. A plurality of separate symmetrical radial gear teeth are pivotally mounted within and between the teeth of the spherical gear with each separate gear tooth having a radial top wall centrifugally biased against the cam surfaces on rotation of the spherical gear and a bottom wall adapted for pivotal movements within planes passing through the first axis on rotation of the separate gear teeth over the cam surfaces.

REFERENCES:
patent: 739207 (1903-09-01), Nielsen
patent: 2087772 (1937-02-01), Kempthorne
patent: 2211417 (1940-08-01), Granberg
patent: 2691348 (1954-10-01), Gunther
patent: 3092035 (1963-06-01), Freeman

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