Patent ID: 9706891
Date: 2017-07-18
CPC Classifications: A47L,B60B,B60R,C11D,F04D,G05D,Y10S

Claim:
1. A surface treatment robot comprising: a robot body having a forward portion and an aft portion, the forward portion preceding the aft portion as the robot moves in a forward direction over a cleaning surface, the robot having a generally rectangular cross-section; a differential drive system comprising a right drive wheel and a left drive wheel, each drive wheel rotatable about at least one transverse axis approximately orthogonal to the forward direction; a supply volume that stores cleaning liquid; at least one spray nozzle that applies the cleaning liquid on the cleaning surface; a pump assembly that moves the cleaning liquid from the supply volume to the at least one spray nozzle, the pump assembly having an adjustable pumping frequency; and a scrubbing module disposed forward of the right and left drive wheels, the scrubbing module comprising a replaceable scrubbing pad.