Smoothing device for rotation of propeller of boat propulsion ma

Details Smoothing device for rotation of propeller of boat propulsion ma Smoothing device for rotation of propeller of boat propulsion ma

1986-10-14

1988-05-31

Peters, Jr., Joseph F.

Marine propulsion

Screw propeller

Shafting

440 52, 440900, 464 97, 464160, 464180, 464 73, B63H 2128

Patent

active

047477962

ABSTRACT:
Several embodiments of coupling devices for marine outboard drives for providing a coupling between an engine output shaft and the outboard drive, drive shaft. Each embodiment employs as the coupling a first portion that provides a relatively resilient driving connection for absorbing low speed torque vibrations and a second more rigid driving connection for providing a more positive power transmission at high speeds and high loads. In some embodiments, the more resilient connection is provided by a spring which may comprise either a torsional spring or a torsional coil spring. In other embodiments, elastomeric elements provide the driving connection.

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patent: 4583953 (1986-04-01), Nakase

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