Marine propeller theft deterrent system

Details Marine propeller theft deterrent system Marine propeller theft deterrent system

1991-09-09

1992-08-04

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Support mounting, carrier or fairing structure

Spinner or fairwater cap

416244B, B63H 100

Patent

active

051353580

ABSTRACT:
A marine propeller theft deterrent system is designed for use on a conventional propeller assembly. The system comprises an annular ring component which fits onto an end portion of the propeller's drive shaft and abuts against a hub of the propeller assembly. The annular ring component has an annular groove around an outer periphery of its inside face and a set of upstanding cantilevered springs spaced thereon inside of the annular groove. A rounded cover component has an open end dimensioned to fit over the cantilevered springs and an end wall dimensioned to fit into the annular groove of the annular ring component. When properly positioned, the rounded cover component is in locking engagement with the annular ring component. As such, a retaining nut for the propeller hub is concealed and access to it rendered difficult.

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patent: 3563670 (1971-02-01), Knuth
patent: 3703341 (1972-11-01), Garofalo
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patent: 3981165 (1976-09-01), Wersinger
patent: 3981617 (1976-09-01), Milewicz
patent: 4436514 (1984-03-01), Takahashi et al.
patent: 4538962 (1985-09-01), McCain
patent: 4566855 (1986-01-01), Costabile et al.
patent: 4605355 (1986-08-01), Davis et al.
patent: 4645422 (1987-02-01), Brushaber

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