Patent ID: 9599216
Date: 2017-03-21
CPC Classifications: F16H,H01H

Claim:
1. A system comprising: an actuator assembly operable to achieve a selected operating state of the system in response to an electronic state selection signal; a push-button shifter assembly having a plurality of push-buttons, wherein each of the plurality of push-buttons includes at least three redundant switches, with a binary open/closed state of each of the at least three redundant switches defining the electronic state selection signal; and a controller in by-wire communication with the actuator assembly and the push-button shifter assembly, wherein the controller receives the electronic state selection signal, and is programmed to determine a button state of each of the push-buttons by determining, in response to receiving the electronic state selection signal, if all of the at least three redundant switches have closed, and, if all of the at least three redundant switches have not closed, by determining whether fewer than all of the at least three redundant switches have closed and opened within a calibrated time interval of each other.