Device for blocking rotation of marine propellers

Details Device for blocking rotation of marine propellers Device for blocking rotation of marine propellers

1989-01-23

1989-07-25

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Combined or convertible

Hub lubrication or seal

416 62, 440 74, B63H 2126

Patent

active

048508004

ABSTRACT:
An improved device for blocking the rotation of marine propellers on lower units of outboards or out-drives is described. The blocking unit has a fixed part and a movable clamp. The fixed part is held by the movable clamp against the under side of the anti-cavitation plate of the lower unit and has a height sufficient to extend down into the propeller rotation circle. When torque is applied to the propeller retaining nut a propeller blade engages the side or bottom of the fixed part and the propeller is prevented from rotating. The blocking unit has an enriching flange and central and transverse webs to provide a low stress design so that it may be fabricated of plastic.

REFERENCES:
patent: 2486672 (1949-11-01), Notestein
patent: 3981165 (1976-04-01), Wersinger
patent: 3981617 (1976-09-01), Milewicz
patent: 4564991 (1986-01-01), Taylor
patent: 4624644 (1986-11-01), Hall
patent: 4645422 (1987-02-01), Brushaber
patent: 4715783 (1987-12-01), Wade

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