Eccentric screw pump having conical sealing surfaces

Details Eccentric screw pump having conical sealing surfaces Eccentric screw pump having conical sealing surfaces

2007-02-07

2009-11-17

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

C418S116000, C418S128000, C418S153000

Reexamination Certificate

active

07618246

ABSTRACT:
The aim of the invention is to improve the sealing possibilities between the elastic stator lining and corresponding connecting flanges of eccentric screw pumps. In order to increase the sealing surfaces, the stator lining comprises, at least at one of its ends, a conical sealing surface which may be provided with one or more prominent or recessed parts.

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International Search Report, Sep. 30, 2005, 3 pages.

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