Importance

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Abstract

A rotating brush assembly is disclosed for a vehicle washing apparatus which is mounted by a single support arm on either or both sides of a vehicle washing apparatus. The brush assembly, which includes a brush, a brush shaft supporting the brush, a brush motor for driving the brush shaft and a flexible spring coupling such as a single coil spring is permitted to swing or tilt in response to the force exerted on the brush by the movement of the vehicle relative to the vehicle washing apparatus. The flexing action of the flexible spring coupling which couples the brush shaft to the support arm permits the brush to tilt or swing in any direction. For example, when the brush assembly engages the front of a vehicle, the flexible spring coupling permits the brush to tilt as it passes along the front end of the vehicle. The flex of the flexible spring coupling urges the brush toward its normal operating position. Since the brush motor rotates the brush in a direction which causes the brush to walk along the front of the vehicle, the combined action of the rotation of the brush and the flex of the flexible spring coupling causes the brush to turn the front corner of the vehicle and pass along the side of the vehicle. Thus, the tilting or flex action of the flexible spring coupling together with the rotary reaction force of the brush against the vehicle enables the brush assembly to wash the front, side, and rear of the vehicle.

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First Claim