Self-contained outboard twin propeller adaptor

Details Self-contained outboard twin propeller adaptor Self-contained outboard twin propeller adaptor

1991-04-01

1991-12-24

Swinehart, Edwin L.

Marine propulsion

Screw propeller

Propeller arrangement

440900, B63H 506

Patent

active

050748149

ABSTRACT:
Disclosed is a device designed to be mounted on the outdrive of an existing marine outboard motor and coupled to the drive shaft thereof with the existing propeller removed. The invention uses chain and sprockets to transfer power from the existing drive shaft to twin propeller shafts driving twin propellers. The device may easily be mounted onto the existing outdrive and may easily be removed therefrom for repairs, storage and restoration of single propeller drive.

REFERENCES:
patent: 2999476 (1961-09-01), Johnson
patent: 3072090 (1963-01-01), Yarbrough
patent: 3954083 (1976-05-01), Frostrom
patent: 4678439 (1987-07-01), Schlichthorst
patent: 4981452 (1991-01-01), Grinde

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