04415316 is referenced by 28 patents and cites 5 patents.

In a Moineau type fluid motor one of the relatively rotatable elements is made of a deformable material, and axial movement of tapered surfaces within the element, caused by variation in the fluid pressure, causes adjustment of the sealing force in the motor in accordance with the fluid pressure level.

Title
Down hole motor
Application Number
6/258143
Publication Number
4415316
Application Date
April 27, 1981
Publication Date
November 15, 1983
Inventor
Rainer Jurgens
Altencelle
DE
Agent
Rufus M Franklin
Assignee
Christensen
UT, US
IPC
F03C 2/08
F01C 5/02
F01C 1/107
View Original Source