US Patent 9498886 Mobile human interface robot

A mobile human interface robot including a drive system having at least one drive wheel driven by a corresponding drive motor, a localization system in communication with the drive system, and a power source in communication with the drive system and the localization system. The robot further including a touch response input supported above the drive system. Activation of the touch response input modifies delivery of power to the drive system to reduce a drive load of the corresponding drive motor of the at least one drive wheel white allowing continued delivery of power to the localization system.