Patent ID: 9145886
Filing Date: 2015-09-29
Classification: F04B

Abstract:
1. An electric vacuum pump backup control system, comprising: a brake on/off switch; a primary electric vacuum pump control interfacing with the brake on/off switch; a secondary electric vacuum pump control separately interfacing with the brake on/off switch and the primary electric vacuum pump control; an electric vacuum pump separately interfacing with the primary electric vacuum pump control and the secondary electric vacuum pump control; and wherein the brake on/off switch is configured to actuate the primary electric vacuum pump control, the primary electric vacuum pump control configured to operate the electric vacuum pump under normal braking operation, said brake on/off switch further configured to actuate the secondary electric vacuum pump control, the secondary electric vacuum pump control configured to operate the electric vacuum pump upon deactivation of the primary electric vacuum pump control and activation of the secondary electric vacuum pump control and further, said activation upon loss of communication between the primary electric vacuum pump control and secondary electric vacuum pump control, said primary and secondary electric vacuum pump controls configured to operate according to programmed instructions stored in controller readable non-transitory memory.