05501580 is referenced by 19 patents and cites 11 patents.

A progressive cavity pump is located in a well and driven by a downhole electrical motor. A connector locates between the drive shaft of the motor and the rotor of the pump. The connector includes a connector shaft which has a lower end restrained on a longitudinal axis. The upper end orbits with the lower end of the rotor. The connector shaft has splined ends that are received in couplings. The connector shaft flexes during the orbiting movement.

Title
Progressive cavity pump with flexible coupling
Application Number
8/437205
Publication Number
5501580
Application Date
May 8, 1995
Publication Date
March 26, 1996
Inventor
Steven K Tetzlaff
Riverside
CA, US
Donald J Barrus
Los Alamitos
CA, US
Agent
James E Bradley
Assignee
Baker Hughes Incorporated
TX, US
IPC
F01C 1/10
F04B 17/00
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