Articulated coupling for use with a progressive cavity apparatus

Details Articulated coupling for use with a progressive cavity apparatus Articulated coupling for use with a progressive cavity apparatus

1993-07-23

1995-09-05

Stodola, Daniel P.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Flexible coupling between fluid-conducting rotary shafts

Including member deformable by relative movement between shafts

175107, 464 89, 464147, E21B 402, F16D 350

Patent

active

054474728

ABSTRACT:
A progressive cavity device including an articulate coupling for converting the complex motion of the rotor into simple rotation. The coupling includes two shafts coupled to one another by joint assemblies connected to opposite ends of an intermediate shaft. The joint assemblies include interlocked threaded portions and an elastomer filling the spaces between the threaded portions. Under loading the male and female portion move relative to one another so that the elastomer is subject to both compression and shear. Should the elastomer fail, the threaded portions simply lock together thereby allowing fail safe operation. The moving components within the coupling are perfectly isolated from the surrounding environment.

REFERENCES:
patent: 2028407 (1986-01-01), Moineau
patent: 2620163 (1952-12-01), Cricker
patent: 3156106 (1964-11-01), Crane
patent: 3323326 (1987-06-01), Vertson
patent: 3627453 (1971-12-01), Clark
patent: 4080115 (1978-03-01), Sims et al.
patent: 4913411 (1990-04-01), Collins et al.
patent: 5007490 (1991-04-01), Ide
patent: 5007491 (1991-04-01), Ide
patent: 5135060 (1992-08-01), Ide

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