Abstract: A pendulum rocker brush for a vehicle wash system is provided including a rocker arm, a rotatable coupler, a motor assembly, and a rocker brush head. Both the rocker brush head and motor assembly can be suspended from the coupler, freely dangling therefrom under the force of gravity, in an unbiased manner. The rocker brush head can pivot relative to the rocker arm through a swing angle between 5 and 45 degrees relative to vertical. The rotatable coupler and rocker brush head can be disposed at a pivoting angle between 10 and 45 degrees relative to a conveyor direction which a vehicle follows. When the rocker brush head encounters an opposing force above a movement threshold from the vehicle, the rocker brush head and the motor assembly can swing outward to the swing angle and at the pivoting angle so the vehicle is not damaged.

Abstract: A pendulum rocker brush for a vehicle wash system is provided including a rocker arm, a rotatable coupler, a motor assembly, and a rocker brush head. Both the rocker brush head and motor assembly can be suspended from the coupler, freely dangling therefrom under the force of gravity, in an unbiased manner. The rocker brush head can pivot relative to the rocker arm through a swing angle between 10 and 45 degrees relative to vertical. The rotatable coupler and rocker brush head can be disposed at a pivoting angle between 10 and 45 degrees relative to a conveyor direction which a vehicle follows. When the rocker brush head encounters an opposing force above a movement threshold from the vehicle, the rocker brush head and the motor assembly can swing outward to the swing angle and at the pivoting angle so the vehicle is not damaged.

Abstract: A car wash tire applicator including a movable follower and a sprayer. The follower moves alongside a vehicle and the sprayer sprays a treatment liquid on a tire of the vehicle, optionally toward the bottom portion of the tire of the vehicle as the tire rotates. The sprayer continues to spray until substantially all of an exposed side of the tire is treated. In one embodiment, the sprayer is aimed and sprays a substantially linear region across the tire adjacent the lowermost portion of the rim to which the tire is attached. The sprayer can include a fan nozzle and can be positioned disposed at an angle of about 0° to about 10° from horizontal. A related method includes moving a sprayer, optionally aimed at a bottom portion of a vehicle tire, alongside the vehicle as the vehicle moves on a travel path, and spraying the tire with a treatment liquid.