Abstract: The present technique provides a system and method for improving atomization in a spray coating device by internally mixing and breaking up a desired coating fluid prior to atomization. In one embodiment, a flow barrier is disposed in the spray coating device downstream of an internal fluid valve and upstream of a fluid exit. The flow barrier may have a plurality of passages configured to direct fluid streams to create a fluid swirling and rotating motion around a central axis of a central flow path to facilitate fluid mixing and breakup. The plurality of passages may direct the fluid streams toward a surface, and may be angled substantially toward one another or diverging from one another. Embodiments of the spray coating device may further include an atomization mechanism adapted to facilitate formation of a spray of the fluid flowing from the fluid exit. The resulting spray coating has refined characteristics, such as reduced mottling.

Abstract: The present technique provides a system and method for improving atomization in a spray coating device by internally mixing and breaking up a desired coating fluid prior to atomization at a spray formation section of the spray coating device. An exemplary spray coating device of the present technique has an internal fluid breakup section comprising at least one fluid impingement orifice angled toward a fluid impingement region. In operation, the internal fluid breakup section forms one or more fluid jets, which impinge one or more surfaces or one another in the fluid impingement region. Accordingly, the impinging fluid jets substantially breakup particulate/ligaments in the coating fluid prior to atomization. The resulting spray coating has refined characteristics, such as reduced mottling.

Abstract: The present technique provides a system and method for improving atomization in a spray coating device by internally mixing and breaking up a desired coating fluid prior to atomization at a spray formation section of the spray coating device. An exemplary spray coating device of the present technique has a mixture-inducing valve disposed adjacent a flow barrier upstream of a spray formation exit. The mixture-inducing valve may have a variety of blunt/angled structures and internal passages to facilitate fluid mixing. The mixture-inducing valve also may interact with the flow barrier to enhance the fluid mixing and fluid breakup. One embodiment of the present spray coating device has an internal fluid breakup section, such as an impinging jet section, adjacent the mixture-inducing valve. The resulting spray coating has refined characteristics, such as reduced mottling.

Abstract: An improved coil winding machine adapted to wind an armature form, the machine including a vibration source used to vibrate the form and the wire to effectively insure maximum loading of wire on the armature form.

Abstract: An ultrasonic ink seal for use in a printing press having a metering roller (20) having an outer surface (40) and at least first and second devices (60, 62) for applying first and second inks, respectively, to the outer surface (40) of the metering roller (20). The ultrasonic ink seal has a plurality of piezoelectric transducers (91, 92, 93) and a deflecting device (96, 100, 102) for deflecting the ultrasonic sound waves produced by the piezoelectric transducers (91, 92, 93) toward a predetermined area (70) on the surface (40) of the metering roller (20). The ultrasonic sound waves cause the first and second inks to be forced away from the predetermined area (70) thereby providing a separation of the first and second inks. In a preferred embodiment the deflecting device (96, 100, 102) has a horn (96) having a curvature approximately equal to a curvature of the outer surface (40), of the metering roller (20), the horn (96) having at least first and second deflecting surfaces (97, 98).