Hydrostatic transmission control circuit

Abstract

An electrical control circuit for supplying an analog voltage signal to an electronic transmission controller for a hydrostatic transmission. The control circuit comprises two switches located on a T-bar handle of a control lever. The first switch is closed for reducing the speed of the vehicle and the second switch is closed for increasing the speed of the vehicle. The circuit is provided with a constant direct current voltage source. A first resistor is mounted in series with the voltage source. A second resistor in turn is mounted in series with the first resistor. The first switch is mounted in parallel with second resistor. A third resistor is mounted in series with the second resistor downstream from the first resistor. The third resistor is coupled to ground. The second switch is mounted in series with the second resistor downstream from the first resistor. A fourth resistor is mounted in series with the second switch. The second switch and fourth resistor are mounted in parallel to the third resistor. A voltage signal output is located between the second and third resistors and supplies an analog voltage signal to the electronic transmission controller.

Dependencies are inferred from the claim text.