Abstract: A paint cup has a base wall, a side wall, and a plurality of indentations positioned around the lower end of the side wall. The side wall extends upwardly from the base wall and has an upper end and a lower end. The indentations extend from an intermediate point between the upper and lower ends of the side wall to and through the base wall. Each indentation has a length, a cross-section, and a profile and at least one of the cross-section and profile varies along the length. The paint cup may be formed in two parts, with the upper part being the body member and the lower part being the base member. In addition, the paint cup can have an upper frustoconical part, a middle cylindrical part, and a lower frustoconical part.

Abstract: A viscosity testing and stirring device includes a rigid, elongated member having a viscosity testing opening defined therethrough. In one embodiment, the member has a generally V-shaped cross-section along at least a portion of its length. In another embodiment, the member has a tear-drop shaped opening. In yet another embodiment, the member has a non-flat cross-section along at least a portion of its length. The member functions as a stirrer and the opening is used to test the viscosity of a liquid. A method for testing the viscosity of a liquid is also provided.

Abstract: A lid assembly for a paint reservoir includes a lid, a first rigid suction tube, and a second rigid suction tube. The lid includes a cover member and a flange that extends downwardly from the periphery of the cover member. A suction opening, vent hole opening, and bypass opening extend axially through the cover member. A first tubular member is positioned in the suction opening and a second tubular member is positioned in the bypass opening. The first suction tube extends through the first tubular member. The second suction tube is coupled to and extends downwardly from the first suction tube. The second suction tube is configured to extend near the bottom surface of the paint reservoir.

Abstract: A selective venting spray assembly is disclosed which includes a sprayer for dispersing a spray of liquid and a spray shaping air flow. An aircap is attached to the sprayer for atomizing and directing the spray. The aircap includes one or more spray shaping passages for receiving the airflow and directing it against the spray to alter the shape of the spray. A flow channel assembly is provided to fluidly connect the aircap to the sprayer. The flow channel assembly includes a flow passage selectively switchable between a first position where airflow is admitted from the sprayer to the spray shaping passage, and a second position where the airflow is diverted to a vent, to produce a non-shaped spray without creating damaging back pressure within the sprayer.

Abstract: A motor assembly is disclosed in which a motor is rotationally connected to an impeller for producing a fluid flow, preferably an air flow. A venturi passage is provided for conducting a high velocity air jet from the air flow. A baffle is configured to the venturi passage to draw an air wash over the motor to provide cooling, without a separate cooling fan.