Patent ID: 8616342

Claim:
A vehicle brake monitor assembly for an air disk brake, comprising: a brake actuator including a pushrod projecting from inside a chamber of said brake actuator, said pushrod releasably actuating a lever arm of a caliper thereby moving the disk brake into a braking position when said pushrod is in an extended position and releasing the disk brake from the braking position when said pushrod is in a retracted position; said pushrod including a pushrod shaft and a contact member biased in a telescoping relationship relative to said pushrod shaft and said lever arm of the caliper abutting said contact member thereby counteracting a bias of said contact member during normal operation of said brake actuator; a pressure sensor for detecting pressure from actuating a brake pedal; a sensor integrated with said assembly proximate said contact member, said sensor sensing movement of said contact member relative to said lever arm and to said pushrod shaft by sensing movement of indicia disposed upon said contact member for determining a condition of said brake actuator including a hanging brake and an overstroke condition when movement of said indicia is inconsistent with the pressure from actuating the brake pedal.