Progressing cavity pump with dual material stator

Details Progressing cavity pump with dual material stator Progressing cavity pump with dual material stator

2007-05-08

2007-05-08

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

C418S152000, C418S178000, C418S179000

Reexamination Certificate

active

10947703

ABSTRACT:
A progressing cavity pump including a rotor and a stator having an inlet and an outlet. The rotor is rotationally disposed inside of the stator such that rotation of the rotor causes fluid in the pump to be pumped from the inlet toward the outlet in a downstream direction. The stator has an inner surface having a first portion made of a first material and a second portion made of a second material, the second portion being located in the downstream direction relative to the first portion.

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