Fuel system low current rheostat

摘要

A fuel level indicator system that utilizes a resistor card having an arc-shaped resistive path with a first set of spaced apart conductor lines and an arc-shaped resistive ink material overlying the first set of conductor lines. The first conductor lines are formed at an angle with respect to a radial line drawn from the center of the resistive path arc. The resistor card also has an arc-shaped continuously solid conductor base and a second set of spaced apart conductor lines extending from the base at an angle with respect to a radial line drawn from the center of the arc-shaped conductor base. The system includes a wiper assembly having a pair of spaced apart arms. Each arm has a plurality of parallel fingers extending from one end. One of the fingers on a first arm engages a conductor line on the resistive path and a second finger on the first arm engages an adjacent conductor line along the resistive path. A first finger on the second arm engages a conductive line on the conductive path; and a second finger engages an adjacent conductor line on the conductive path. The wiper assembly is constructed and arranged to provide rotational movement along the arc-shaped conductive path and arc-shaped resistive path. The system also has a float with an extending lever that is connected to the wiper assembly to produce rotational movement of the wiper assembly as the float moves.