Safety steering system for outboard motors

Details Safety steering system for outboard motors Safety steering system for outboard motors

1978-10-13

1980-10-14

Frankfort, Charles E.

Marine propulsion

Screw propeller

With means effecting or facilitating movement of propulsion...

91437, 91466, 114144R, B63H 2126

Patent

active

042274818

ABSTRACT:
A safety steering system to control torque rotation for boats having directable propeller outboard motors capable of pivoting about a vertical axis. An arm extending from the motor is connected to a flexible cable having two ends, a first end connected to a steering device and a second end connected to the arm. An actuator control valve interposed along the flexible cable is capable of locking the arm in a single position when no force from the cable is being exerted on the arm. The control valve has a valve body with a central bore therethrough and a first external port and a second external port in fluid communication with the central bore. A hydraulic piston-cylinder is connected between the end of the motor arm and a tab in the motor well. The hydraulic cylinder has a first chamber of confined liquid and a second chamber of confined liquid. A piston reciprocal within the cylinder is capable of moving longitudinally therein and includes a piston head separating the first liquid chamber from the second liquid chamber. Liquid may be conducted from the first chamber to the first external port on the control valve. Liquid may also be conducted from the second liquid chamber to the second external port on the control valve. A stem within the control valve responsive to a push force or pull force from the cable provides communication within the control valve between the external ports and is movable in response to the cessation of the push force or the pull force by release of the steering device to interrupt communication between the external ports; thus, the hydraulic piston-cylinder will lock the motor in a fixed position.

REFERENCES:
patent: 2615433 (1952-10-01), Deardorff et al.
patent: 2968282 (1961-01-01), Hayman et al.
patent: 3631833 (1972-01-01), Shimanckas
patent: 3658027 (1972-04-01), Sturges

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