Marine propeller locking tab washer

Details Marine propeller locking tab washer Marine propeller locking tab washer

1989-10-20

1991-06-11

Basinger, Sherman

Marine propulsion

Screw propeller

403320, 411122, 411131, 440 83, B63H 2334

Patent

active

050228757

ABSTRACT:
A marine drive (10) has a propeller (12) with a hub (14) mounted on a propeller shaft (22). A rear thrust hub (30) has one or more slots (40) spaced circumferentially around the propeller shaft. A nut (42) is threaded onto the propeller shaft to mount the propeller. A locking tab washer (60) around the propeller shaft between the nut and the propeller hub has one or more circumferentially spaced tabs (66) bendable forwardly into slots (40) of the rear thrust hub (30) and has ears (68) extending perpendicularly rearwardly from outer tips of the tabs externally of the slots. The ears may be gripped and pulled to bend the tabs rearwardly out of the slots, to enable removal of the nut, and hence removal of the propeller.

REFERENCES:
patent: 3387768 (1968-06-01), Zoehfeld
patent: 4566855 (1986-01-01), Costabile et al.
Mercury Marine Service Manual, Brunswick Corporation, 1988, 90-97653-3 1-488, pp. 5C-4 and 5c-5.

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