Accession Number : ADD001176

Title :   Torsionally and/or Axial Soft Coupling.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Harbage,Alfred B

Report Date : 20 Jun 1974

Pagination or Media Count : 11

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.

Descriptors :   *Marine propulsion, *Flexible couplings, Patents, Drive shafts, Vibration, Propellers(Marine)

Subject Categories : Couplers, Fasteners, and Joints
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE