Abstract: A grit blasting arrangement for cleaning chemical reactor tubes includes means for ensuring the grit blast nozzle is coaxial with the longitudinal axis of the tube to be cleaned. The grit blasting device for cleaning tubes spaced apart by upper and lower tubesheets. The grit blasting device includes a grit blast nozzle mounted on a positioning frame and projecting outwardly with an outlet directed into a tube opening during a cleaning operation. The device includes a plurality of stop pins mounted on the positioning frame designed to abut a tubesheet and to define an imaginary plane coplanar with the tubesheet. The plurality of stop pins when abutting the tubesheet prevent the outlet of the nozzle from extending into the tube causing a venturi effect.

Abstract: An applicator including: a frame with hopper mounted thereon to hold and dispense a granule product, the hopper including an electronically controlled gate(s); a tank to hold a liquid product; a electronically controlled spray tip(s) to dispense the liquid product; a spray pump located between the tank and spray tip(s); an operator control interface for receiving input from an operator; a control coupled to the operator control interface, the electronically controlled gate(s), and the spray tip(s), where the control receives input, dispenses the liquid or granule product based on the input received from the operator control; where when the liquid product is dispensed, the control provides a signal to the spray tip(s) to regulate a flow of the liquid product, and when the granule product is dispensed, the control provides a signal to the electronically controlled gate(s) to regulate a flow of the granule product.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: An applicator including: a frame with hopper mounted thereon to hold and dispense a granule product, the hopper including an electronically controlled gate(s); a tank to hold a liquid product; a electronically controlled spray tip(s) to dispense the liquid product; a spray pump located between the tank and spray tip(s); an operator control interface for receiving input from an operator; a control coupled to the operator control interface, the electronically controlled gate(s), and the spray tip(s), where the control receives input, dispenses the liquid or granule product based on the input received from the operator control; where when the liquid product is dispensed, the control provides a signal to the spray tip(s) to regulate a flow of the liquid product, and when the granule product is dispensed, the control provides a signal to the electronically controlled gate(s) to regulate a flow of the granule product.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: A grit blasting arrangement for cleaning chemical reactor tubes includes means for ensuring the grit blast nozzle is coaxial with the longitudinal axis of the tube to be cleaned.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: An arrangement for loading particles through an opening using an upwardly-facing, flexible sheet so that, when particles rest on the flexible sheet and the sheet flexes, the flexing of the sheet breaks up bridges formed by the particles.

Abstract: An open field game arrangement includes glowing targets and provides responses, such as lights and sounds, when the targets are hit.

Abstract: A system for detecting voids or imperfections such as holidays in a coating having fluorescent material therein comprises a camera having a digital image output for inspecting the coating wherein said camera's digital image output may include only the image produced by light in a color spectrum corresponding to a portion of the spectrum of light produced by fluorescent emission of the coating, thereby revealing the presence of any imperfections. Furthermore, an ultraviolet light source is provided to illuminate the coating and excite fluorescent emission therein. In one embodiment, the system is capable of distinguishing between an imperfection and the complete absence of a substrate surface. The system is also capable of revealing coating defects or imperfections in irregular surfaces.