Patent ID: 7774887

Claim:
An apparatus comprising: a linkage adapted to support scrubber brushes, the linkage including: a base, a first brush support pivotally coupled to the base via one or more spherical bearings, and a second brush support pivotally coupled to the base via one or more spherical bearings; an actuator adapted to pivot the first and second supports in concert such that scrubber brushes supported by the first and second brush supports approximately simultaneously achieve contact with, or break contact with, respective major surfaces of a substrate; and a toe-in actuator adapted to move two of the spherical bearings toward or away from each other so as to adjust a toe-in angle between scrubber brushes supported by the first and second brush supports; wherein the linkage and first and second brush supports are located outside of a tank and are adapted to couple to ends of scrubber brushes disposed within the tank.