Automobile transmission mode sensing apparatus

Motor vehicle transmission mode sensing apparatus comprising a bracket having first and second portions, the first portion having mounting means for mounting the bracket in a transmission housing, the second portion mounting a circuit board including a plurality of stationary contact segments on a flat surface arranged along a straight line, a movable contact assembly comprising an electrically conductive bar mounted on the bracket and having a central portion spaced from and extending parallel with the straight line, a slider having a body and an arm projecting therefrom, the arm having a free distal end adapted to be received in a recess formed in a manual valve of a transmission and movable therewith when the bracket is mounted in the transmission housing, the body of the slider disposed between the flat surface and the central portion of the bar, the slider being movable along the straight line, and a resilient electrical contact mounted on the slider having a portion in continuous engagement with the bar and another portion resiliently biased into engagement with the flat surface, the resilient electrical contact engaging a respective stationary contact segment in dependence upon the position of the slider.

Motor vehicle transmission mode sensing apparatus for use in a transmission having a manual valve means, the manual valve means having a valve member movable among selected gear positions comprising a bracket having first and second portions, the first portion having mounting means adapted to attach the bracket to the transmission adjacent the manual valve means, the second portion having a plurality of spaced contact segments, one for each gear position to be sensed and a common contact strip, means to mount the contact segments and the common contact strip on the second portion of the bracket, movable means interconnecting the valve member, when the bracket is mounted to the transmission, to a movable electrical contact electrically connected to the common contact strip to electrically connect a preselected contact segment and the common contact strip dependent upon the position of the valve member.

In a motor vehicle having a transmission and a manual valve member movable among a plurality of gear positions in communication with respective hydraulic circuits for controlling the selection of gears including drive, reverse and park, a mode sensing and feedback system comprising bracket means, means for mounting the bracket means adjacent the manual valve member, first and second pressure switch means mounted on the bracket means in communication with the drive and reverse hydraulic circuits respectively, a plurality of electrical contact segments, one for each gear position a common contact strip, a two wire resistive network means coupled to the first and second pressure switch means and to the plurality of contact segments and contact strip and movable means coupled to the manual valve member and having a movable contact electrically connected to the common contact strip and being movable into and out of engagement with the plurality of electrical contact segments electrically connecting the common contact strip with a selected contact segment dependent upon the position of the manual valve member whereby an output signal is generated which varies with the selected position of the manual valve member and with the pressure of the hydraulic circuits in communication with the pressure switch means.

In a motor vehicle having a transmission and a manual valve member movable among a plurality of gear positions in communication with respective hydraulic circuits for controlling the selection of gears including drive, reverse and park, a mode sensing and feedback system comprising bracket means, means for mounting the bracket means adjacent the manual valve member, pressure switch means mounted on the bracket means in communication with a selected hydraulic circuit, a plurality of electrical contact segments, one for each gear position, a common contact strip, a two wire resistive network means coupled to the pressure switch means and to the plurality of contact segments and contact strip and movable means coupled to the manual valve member and having a movable contact electrically connected to common contact strip and being movable into and out of engagement with the plurality of electrical contact segments electrically connecting the common contact strip with a selected contact segment dependent upon the position of the manual valve member whereby an output signal is generated which varies with the selected position of the manual valve member and with the pressure of the hydraulic circuit in communication with the pressure switch means.

Motor vehicle transportation mode sensing apparatus for use in a transmission having a manual valve means, the manual valve means having a valve member movable along selected gear positions comprising first and second bracket portions, the first portion having mounting means for mounting the bracket to the transmission adjacent the manual valve means, the second portion having a plurality of spaced stationary circuit portions, one for each gear position to be sensed, and slider means having a movable circuit portion slidably mounted on the second bracket portion and slidable sequentially into and out of electrical engagement with the respective spaced circuit portions, the slider means having a projection extending into the recess of the valve member coupling the slider means and valve member whereby the slider will move with the valve member.

In a motor vehicle having a transmission and a manual valve member movable among a plurality of gear positions in communication with respective hydraulic circuits for controlling the selection of gears including drive, reverse and park, a mode sensing and feedback system comprising pressure switch means mounted in communication with an hydraulic circuit, a plurality of electrical circuit portions each having a stationary contact, one for each gear position, slidable electrical contact means connected to the manual valve and being movable therewith sequentially among the stationary contacts to energize a respective electrical circuit portion dependent upon the position of the manual valve, and a resistive network means coupled to the pressure switch means and to the plurality of circuit portions, each electrical circuit portion having a different resistance value, and the pressure switch means shunting selected portions of the resistive network means upon actuation of the pressure switch means whereby an output signal is generated which varies with the selected position of the manual valve member and with the pressure of the hydraulic circuits in communication with the pressure switch means.