Hydraulic powered trim and tile apparatus for marine propulsion devices

Abstract

A power trim and shock absorbing system for outboard motors. A pair of combined trim positioning and shock absorber cylinder units are mounted within the side arms of a transom bracket assembly of an outboard motor. A manifold within the assembly coupled the units to a supply within the boat. A hydraulic manifold is pivotally mounted and attached to the lower end of the cylinder units with hose connections directly to lower side ends of the double walled cylinders to maximize the power stroke. The hose system includes passageways formed directly in the lower mounting bolts for the transom side members to minimize fluid leakage areas and damage to the boat transom. Down trim limit cams are pivotally located within the swivel assembly on a rotating rod and cooperate with aligned motor arms to set the minimum trim down position. A trailing bar is pivotally interconnected to the motor unit between the power cylinder units. An over-center control link is coupled to the bar by a spring. The transom bracket assembly is provided with a locking recess which is engaged by the outer end of the bar in the trailing position.