F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
138/77.1
F15B 3/00 (2006.01) B63H 20/10 (2006.01) F02B 61/04 (2006.01)
Patent
CA 1151506
-20- ABSTRACT A hydraulic system for trimming a marine out- board drive, and wherein a single actuator for moving the propulsion unit is used for both trim and tilt. The actuator is connected to a hydraulic pump. A means for amplifying the pump pressure is connected to the actuator, The amplifier has first and second ports connecting the actuator and to the hydraulic pump. The amplifier means includes a switch for bypassing the amplifier to pass the hydraulic fluid from the pump to the actuator without amplification. The switch is operable for bypassing the amplifier for rapidly tilting the propulsion unit and operable for connecting the amplifier within the hydraulic circuit to develop increased pressure for trimming the propulsion unit, The hydraulic amplifier includes a piston movable within a cylinder. Movement of the hydraulic amplifier piston to one end of the hydraulic amplifier cylinder actuates the switch to bypass the amplifier and movement in the other direction away from that end, switches the amplifier to its amplification mode, the amplifier continuing in its amplification mode until the amplifier piston reaches a limit means switch placed in its path to bypass the amplifier hydraulic circuit.
358654
Kern Calvin V.
Zepp Lawrence P.
Allied Corporation
Kirby Eades Gale Baker
LandOfFree
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