Torsionally and/or Axial Soft Coupling.

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Abstract:

The patent application relates to a flexible rotary shaft coupling for marine use in a propeller shaft that isolates the vibration caused by axial forces on the propeller passing through an uneven wake. Torque is carried by a solid pin and link arrangement which produces negligible axial resistance. The coupling housing is substantially cup-shaped on one side and has a plunger on the other side and contains a very dense liquid or a very dense soft rubber mass formed to a hollow cylindrical shape within the coupling due to centrifugal force. This mass resists the fluctuating forces by the variation of the inside diameter of the hollow cylinder formed by centrifugal forces during rotation. Variation of stiffness of the cylindrical column is achieved by varying the distance between the coupling faces or sides.

Author(s):
Harbage, Alfred B.
Author Organization(s):
DEPARTMENT OF THE NAVY WASHINGTON D C
Descriptive Note:
Patent Application,
Pagination:
0011

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Government-owned Invention Available For Licensing. Copy Of Application Available Ntis.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
PAT-APPL-481 007
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Marine propulsion, *Flexible couplings, Patents, Drive shafts, Vibration, Propellers(Marine)
Field(s)/Group(s):
Couplers, Fasteners and Joints, Marine Engineering
Keyword(s):
*Patent applications, PAT CL 64 11 11 R
Report Date:
1974 Jun 20