BRUSH APPARATUS

摘要

BRUSH APPARATUS Brush apparatus includes a brush, first and second contactors and biasing apparatus. The contactors are movable between an open position and a closed position in response to wear of the brush. The biasing apparatus biases the brush in a preselected direction and controllably moves a selected one of the first and second contactors in response to wear of the brush. The brush is free for movement in the preselected direction in response to wear of the brush.