Trolling drive means for boats

Details Trolling drive means for boats Trolling drive means for boats

1981-08-26

1984-01-03

Blix, Trygve M.

Marine propulsion

Hydraulic fluid drive for propelling means

440 63, B63H 513

Patent

active

044240414

ABSTRACT:
A boat is disclosed having a conventional inboard motor operatively connected to a primary propeller on the exterior of the boat. A hydraulic motor is operatively connected to the boat in the proximity of the primary propeller. A hydraulic circuit including a hydraulic pump is operated by the inboard motor and is connected to the hydraulic motor for actuating the hydraulic motor. An electrically operated solenoid valve is imposed in the hydraulic circuit to selectively by-pass hydraulic fluid in the hydraulic circuit away from the hydraulic motor. The hydraulic motor is pivotally connected to the boat so that when in a first position, it will drive the boat forwardly, and when in a second position, it will drive the boat rearwardly. Conventional controls are provided to withdraw power from the primary propeller when the hydraulic motor is in operation.

REFERENCES:
patent: 2714866 (1955-08-01), Pleuger et al.
patent: 3139853 (1964-07-01), McCarthy et al.
patent: 3468126 (1969-09-01), Mercier
patent: 3596625 (1971-08-01), Guenther
patent: 3709186 (1973-01-01), Gotmalm
patent: 3881443 (1975-05-01), Hamp
patent: 3983834 (1976-10-01), Hirmann
patent: 4200055 (1980-04-01), Siegel
patent: 4209986 (1980-07-01), Cunningham

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