Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Including member deformable by relative movement between shafts
Patent
1996-10-17
1998-11-10
Dunn, Eileen A.
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Flexible coupling between fluid-conducting rotary shafts
Including member deformable by relative movement between shafts
175299, 464 89, 464147, F16D 350
Patent
active
058335412
ABSTRACT:
An elastomeric joint that can be used, as part of an articulated coupling in a progressive cavity device, including using the articulated coupling for converting the complex motion of the rotor into simple rotation. The coupling includes two shafts coupled to one another by coupling assemblies connected to opposite ends of an intermediate shaft. The coupling assemblies include interlocked threaded and tapered 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. Provisions are also made to protect the integrity of the coupling under reverse torque. The moving components within the coupling are perfectly isolated from the surrounding environment. The coupling and coupling can also be used for other applications, especially those involving high torque loads and those requiring suppression of vibrations and shocks.
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Ide Russell D.
Turner William E.
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