Abstract: A turbo-compressor air supply system for supplying air at relatively low pressure and high volume to a paint spray system or the like. The air supply system comprises a drive motor including a casing, a drive shaft projecting from the casing and air intake means in fluid communication with the casing. A turbo-compressor is provided which includes a housing, a drive shaft having first and second projecting ends, a bearing housing projecting from the compressor housing and disposed concentrically around and spaced from a projecting end of the drive shaft and a bearing disposed concentrically around the projecting end. A drive train couples the compressor drive shaft with the other projecting end of the drive motor drive shaft to enable the motor to drive the turbo-compressor. Means are provided for placing the bearing housing in fluid communication with a drive motor casing and associated air intake means to provide cooling for the bearing.

Abstract: A paint spray gun is provided with a means of adjustably controlling fanning of the spray which may be regulated independently of the rotative position of the air cap. A valve member axially shiftable by an adjustment screw adjustably controls the flow of air to fanning control ports in the air cap without interfering with the flow of atomizing air to the paint spray nozzle.

Abstract: A turbo compressor mounted upon a hollow box-like housing is provided with a noise suppressor which includes a rectangular open ended box-like structure suspended from the housing by flexible walled tubes which constitute an air inlet and an air outlet to the housing through which air flows to prevent heat build up within the housing. The suppressor walls are lined with a sound absorbent material which, combined with the non-rigid suspension of the suppressor from the housing and the non-linear air entrance and exit paths to and from the housing, suppresses sound generated by flow of high pressure air from the compressor into the housing through a shaft bearing. Noise generated by the flow of air into the compressor inlet is reduced by blocking the inlet with a block of porous foamed plastic material which also functions as an inlet filter.