Combined power trim and steering system

Details Combined power trim and steering system Combined power trim and steering system

1988-04-04

1989-06-06

Peters, Jr., Joseph F.

Marine propulsion

Screw propeller

With means effecting or facilitating movement of propulsion...

440 53, B63H 2126

Patent

active

048368105

ABSTRACT:
The power steering and trim functions of a marine drive unit are combined in a fluid pressure supply system which utilizes a single electric motor drive hydraulic pump to provide operating fluid for both functions. Fluid pressure to operate the power steering is supplied by an accumulator which, in turn, is charged by the hydraulic pump. The pump is also operable in response to operator input to supply fluid pressure for the trim system. Appropriate controls, responsive to the upper and lower pressures limits of the accumulator, are used both for charging the accumulator and for providing operational priority to the power steering system by disabling operation of the trim system during charging of the accumulator.

REFERENCES:
patent: 3915111 (1975-10-01), Buddrus
patent: 4050359 (1977-09-01), Mayer
patent: 4490120 (1984-12-01), Hundertmark
patent: 4544362 (1985-10-01), Arneson

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