Abstract: There is provided a high volume low pressure spray painting system, control therefor, and method of operation therefor. The high volume low pressure spray painting system includes an electrically powered blower motor with a cooling fan, an high volume low pressure blower fan driven by the blower motor, an air conduit connecting the outlet of the blower fan to a spray gun adapted to atomize liquid paint with the high volume low pressure air delivered by the blower fan, and a valve in the spray gun actuated by a trigger for controlling the high volume low pressure air delivered by the blower fan. The control for the spray painting system includes a second valve arranged downstream from the blower fan outlet biased to a normally closed position which checks the flow of high volume low pressure air delivered by the blower fan when the valve in the spray gun is closed and simultaneously with the closing of the second valve the speed of the blower motor is reduced to idle.

Abstract: A power roller assembly for painting or coating surfaces is provided having a roller applicator rotatably mounted on a roller applicator support arm through which paint under pressure is supplied to the interior of the roller applicator by means of a control valve communicating with a source of paint under pressure. The paint is distributed longitudinally along the interior of the roller applicator by means of a tubular-shaped manifold co-axially mounted and spaced from the roller applicator axle. The paint in the interior of the roller applicator is pushed longitudinally back and forth thereacross by means of an auger-like spiral mounted co-axially with the roller applicator for rotation therewith.

Abstract: A spray gun is provided for hydraulically atomizing and spraying liquids such as paint. The spray gun comprises a body portion having a fluid passageway extending therethrough communicating with a source of pressurized fluid and a spray head portion connected to the body portion. The spray head portion is provided with a spray opening, communicating with the fluid passageway in the body portion, and with a retractable valve stem substantially transverse to and forming a part of the spray opening. A triggering mechanism operates to retract the valve stem to thereby open the spray opening.

Abstract: A self-cleaning spray nozzle or tip is provided for spray guns and like devices which are adapted to hydraulically atomize and spray liquids such as paint. The spray nozzle includes a valve stem in the spray opening and forming a part thereof which is abruptly and momentarily retractable to thereby fully open the spray opening to allow the dislodgement of any particles in the opening.

Abstract: An improved adjustable spray tip or nozzle is provided for spray guns and like devices which are adapted to hydraulically atomize and spray liquids such as paint. The spray tip includes an adjustable valve stem which varies, by means of adjustable movement, the spray opening and thus the fan spray issuing from the spray tip. The improvement includes providing a valve stem which is fracture resistant as well as erosion resistant.

Abstract: An improved adjustable spray tip or nozzle is provided for spray guns and like devices which are adapted to hydraulically atomize and spray liquids such as paint. The spray tip includes an adjustable valve stem which varies, by means of adjustment, the spray opening and thus the fan spray issuing from the spray tip.

Abstract: A self-closing refrigerator door of the sliding type having an upper channel into which is received a track depending from the upper portion of the door frame, a series of rollers supporting the door on a track projecting from the lower portion of the door frame, adjustable energy producing closing means having means releaseably engageable with the lower portion of the door frame beneath the door so that upon opening a closing force is exerted upon the door by the biasing action of the energy producing closing means sufficient to cause it to close on the door frame.

Abstract: An adjustable spray tip or nozzle is provided for a spray gun and like devices which are adapted to hydraulically atomize and spray liquids such as paint, said spray tip including means for adjusting the fan spray issuing therefrom. The adjusting means in the spray tip includes a valve for controlling the fluid passing through the spray opening.