Screw pump stators

Details Screw pump stators Screw pump stators

1977-03-04

1978-08-01

Croyle, Carlton R.

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

F04C 102

Patent

active

041040090

ABSTRACT:
The invention relates to screw pump stators having a rigid tubular body lined on the inside with a resilient sleeve.
The sleeve comprises a twisted liner (4) having inner bosses (5) and outer bosses (6) in the zones thereof corresponding to the highest sliding speeds of the rotor, the outside bosses projecting more than the inner bosses, and the inside surface of the rigid body (3) is hollowed out so as to sealingly receive the outer bosses of the liner.

REFERENCES:
patent: 1892217 (1932-12-01), Moineau
patent: 3011445 (1961-12-01), Bourke
patent: 3802803 (1974-04-01), Bogdanov et al.

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