Patent ID: 9616971
Date: 2017-04-11
CPC Classifications: B63B,B63H

Claim:
1. A control device for a trim tab of a boat comprising: a trim tab comprising a pair of stabilizers, one stabilizer being disposed on each side of the boat and comprising a blade and a control actuator for the blade, the control actuator regulating an angle of the blade in respect of a plane identifying a transom of the boat; and a joystick connected to a control circuit which generates a non-transitory command signal based on a movement of the joystick, the non-transitory command signal coordinating a position of each of the stabilizers, thereby causing a bow of the boat to move in a same direction as the joystick, wherein each control actuator includes a DC motor, wherein the control circuit generates electric signals activating the DC motor, thereby transforming a movement of the joystick in operation of the DC motors of the control actuator, wherein the control circuit comprises switches positioned to take advantage of a reverse polarity voltage for reversing rotation of the DC motors of the actuators and cause a movement of the control actuators, wherein the control circuit comprises two circuits, one of the two circuits being provided for each actuator, each circuit having at least two switches operatively coupled to one another in parallel, each DC motor of each actuator being connected to the at least two switches which are alternatively activated by the movement of the joystick, wherein the joystick is configured as a handle extending from an upper surface of a housing, the upper surface being visible to a user, and wherein the upper surface has icons thereon, the icons being disposed in cross-wise positions and being shaped as pictorial symbols that depict the boat and an orientation of the boat in relation to a water line after actuation of the trim tabs in response to a displacement of the handle toward one of the icons.