Patent ID: 8505144

Claim:
A counter-balanced top wheel assembly for laundering a vehicle, comprising: a frame; a first support pivot arm secured to said frame, said first support pivot arm having an axis of rotation; a brush support arm having a first end and a second end, said brush support arm being pivotally mounted to said frame adjacent said first end; wherein said first end of said brush support arm is secured to said first support pivot arm; a second support pivot arm secured to said frame, said second support pivot arm having an axis of rotation; a counterweight support arm having a first end and a second end, said counterweight support arm being pivotally mounted to said frame adjacent said first end; wherein said first end of said counterweight support arm is secured to said second support pivot arm; wherein said axis of rotation for said first support pivot arm and said axis of rotation for said second support pivot arm are the same; a brush in communication with said second end of said brush support arm such that said brush extends over a vehicle bay to launder an exterior of the vehicle; and a pulley mechanism, including a strap connecting said brush support arm to said counterweight support arm to allow opposite movements of the arm; said second end of said brush support arm and said second end of said counterweight support arm extending from said frame in the same direction.