Importance

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Abstract

A trim indicator for outboard motors or the like for determining the tilt or angularity of the propeller with respect to a parallel position to the water level. The indicator is attached to the motor to align a vertical sensing member perpendicular to the axis of the propeller. When the motor is tilted, e.g. as the boat comes up to planing speed the sensing member indicates the angular degree of tilt by means of an electrical circuit to a signal receiver suitably located in the operating control panel in order that appropriate trimming measures may be taken. The indicator may be attached to the motor shroud or cover in the form of a signal sending housing. The sensing member may be in the form of an electrically conductive ball which seeks by gravity the lowest point on an arcuate track having a series of spaced electrical contacts. As the motor tilts the ball touches a contact corresponding to the angle of tilt to complete a circuit to the receiver to light a signal light to indicate visually the angle of tilt or the plumb or vertical position of the motor where the propeller is parallel to the surface of the water. To minimize effects or turbulence or chattering of the ball an arcuate cover for the track is provided closely spaced above the ball. A non-conductive dampening fluid may also be employed to slow the movement of the ball to minimize chattering tendencies.

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First Claim