Eccentric archimedian screw pump of rotary displacement type

Details Eccentric archimedian screw pump of rotary displacement type Eccentric archimedian screw pump of rotary displacement type

1984-12-28

1986-05-27

Vrablik, John J.

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

418182, F04C 200, F04C 500, F04C 1500

Patent

active

045913226

ABSTRACT:
This disclosure relates to a pump including a stator formed with a spiral pump cavity therethrough, which is generally oval in cross section, and a spiral pump rotor which is generally circular in cross section and extends through the cavity. The rotor has a shaft fixed thereto and the axis of the shaft is eccentrically located from the centerline of the spiral cavity by a distance e, so that the shaft makes a hypocycloidal motion with its axis orbiting in a circle having a radius equal to the distance e. The pump further includes a drum journalled concentrically with the spiral cavity. The shaft is journalled on the drum in parallel with the drum axis but eccentrically therefrom by the distance e.

REFERENCES:
patent: 2525265 (1950-10-01), Moineau

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