Hydraulic tilt and trim unit for marine drive

Details Hydraulic tilt and trim unit for marine drive Hydraulic tilt and trim unit for marine drive

1998-01-20

2000-01-18

Sotelo, Jesus D.

Marine propulsion

Screw propeller

With means effecting or facilitating movement of propulsion...

440 53, B63H 512

Patent

active

060153180

ABSTRACT:
An improved flow control mechanism for a tilt and trim adjustment system quickens tilt and trim operations of an associated outboard drive. The flow control mechanism includes a bypass line that interconnects the two sides of a respective tilt and trim cylinder. A bypass valve regulates flow through the bypass line. The bypass valve opens the bypass line when raising the outboard drive to quicken this operation. When lowering the outboard drive, however, the bypass valve closes the bypass line and connects an up chamber of the cylinder to a suction side of the pump to slow the speed at which the tilt and trim adjustment system lowers the outboard drive. The flow control mechanism also inhibits the flow of working fluid through the system when the pump is inactive.

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