Control system for the hydraulic tilt function of a marine engin

Details Control system for the hydraulic tilt function of a marine engin Control system for the hydraulic tilt function of a marine engin

1988-07-14

1990-09-18

Peters, Jr., Joseph F.

Marine propulsion

Screw propeller

With means effecting or facilitating movement of propulsion...

137503, B63H 512

Patent

active

049574574

ABSTRACT:
A system for controlling the movement of hydraulic fluid through the fluid containing chambers of a hydraulic cylinder operatively connected between a marine vessel and its outboard drive unit includes valves disposed within the cylinder to restrict the flow of fluid between the fluid chambers and a bypass for allowing unrestricted flow of fluid between the fluid chambers. The system includes a trim valve to allow limited flow of fluid in a first direction of piston movement and a tilt valve to allow unrestricted flow of fluid between the fluid chamber of the cylinder. A velocity sensing valve is provided to sense and prevent rapid upward movement of the drive unit.

REFERENCES:
patent: 2703631 (1955-03-01), Hupp
patent: 3138174 (1964-06-01), Gilpin
patent: 3983835 (1976-10-01), Hall
patent: 4702714 (1987-10-01), Nakase

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