Trim adjust system for a watercraft
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorHirofumi Imaeda
Life of this patent
Estimating the term…
Abstract
A jet propelled watercraft having a discharge nozzle that can be adjusted for trim and an electrically operated trim condition indicator is provided for giving the rider the indication of the actual trim condition of the watercraft. In addition, an automatic trim control mechanism is provided that permits the operator to set the desired trim at varying watercraft speeds and the trim will be automatically set when those speeds are reached.
Claims18
A trim position indicator for indicating the trim position of a discharge nozzle of a watercraft jet propulsion unit which discharge nozzle is movable generally about a horizontally disposed axis to a plurality of trim adjusted positions, a servomotor, a screw driven by said servomotor, a nut received on said screw and fixed against rotation for axial movement of said nut upon rotation of said screw, said nut being connected to the discharge nozzle for controlling the position of said discharge nozzle upon axial movement of said nut along said screw for power adjustment of said discharge nozzle between said positions, an electrical detector comprised of a potentiometer having a wiper arm, said wiper arm having a pin and slot connection with said nut for detecting the trim position of said discharge nozzle and outputting an electrical trim position signal, and an electrical indicator receiving said trim position signal from said electrical detector and providing an indication to an operator of the trim position of said nozzle.
A watercraft comprising a hull, a jet propulsion unit for propelling said hull and having a discharge nozzle moveable generally about a horizontally disposed axis to a plurality of trim adjusted positions, a servomotor for power adjustment of said discharge nozzle between said positions, a watercraft condition sensor, a controller for receiving signals from said watercraft condition sensor and actuating said servomotor for positioning said discharge nozzle in the desired position relative to the watercraft condition.
Dependencies are inferred from the claim text.