Abstract: A nozzle assembly for use in a semiconductor fabrication liquid dispensing apparatus which dispenses a liquid onto a surface. The nozzle assembly comprises a bulkhead comprised of a non-stick material (such as Teflon.RTM. or similar material) coupled at a first end to a dispensing tube. The nozzle is removable and reusable so that an inventory of replaceable nozzles may be kept on hand for optimum operation of a liquid dispensing apparatus.

Abstract: An electrostatic coating apparatus for flat-plate type objects to be coated, comprising a conveyor carrying flat-plate type objects to be coated and having two parallel and linear portions which carry said objects in opposite directions and which are each L in length and are spaced 2R apart, said L and R having the relationship L.gtoreq.2R; a reversing device which receives coated objects carried from one linear portion and which reverses said objects before feeding them to the other linear portion; a rotary spray head of which the axis of rotation is centrally situated between said linear portions of the conveyor and extends in a vertical direction; and a supporting device which subjects the rotary spray head to reciprocation along said axis of rotation.

Abstract: An electrostatic coating facility for an electroconductive coating material comprising a coating machine disposed in a coating zone while being grounded to the earth, an insulated conveyer disposed in the coating zone for conveying an object to be coated in an electrically insulated state and applying a high voltage to the object, an entering conveyer disposed for carrying the object into the coating zone, a delivery conveyer for carrying the coated object out of the coating zone, and a relay transfer device interposed between the insulated conveyer 1 and the entering conveyer or the delivery conveyer for transferring the object in an electrically insulated state while keeping a required insulation distance between each of them. Aqueous coating material free from public pollution can be used with no troubles for taking insulative measures on the side of the coating machine and without worry of spark discharge.

Abstract: A single-line parts coating system comprises plural coating sections each housing plural coating booths, horizontally-movable nonflexible rails located in the respective coating sections, a first fixed nonflexible rail for introducing parts to be coated into a first coating section, intermediate fixed non-flexible rails located between the coating sections, a last fixed nonflexible rail for discharging the parts from a last coating section, and horizontally-flexible rails located between the nonflexible rails to connect the nonflexible rails. Each flexible rail comprises rail pieces and connecting plates connecting the rail pieces together. The rail pieces are in contact with each other. Each connecting plate is fixed to one of adjacent rail pieces, and is pivotally connected to the other rail piece. Thus, the rail pieces, together with the connecting plates fixed thereto, are capable of horizontal arcing motion relative to adjacent rail pieces.

Abstract: A system for heating and coating a weld joint in a pipe comprising; a heating and coating ring for placement on the pipe over the center of the weld joint; the ring having an open position to permit the same to be placed over the pipe and a closed position wherein the ring surrounds the pipe; the ring having a powder dispenser mounted thereon for dispensing a powdered coating material therefrom onto the surface of the pipe; the ring also having a pair of induction heaters mounted thereon, each induction heater including an induction coil comprising a length of hollow copper tubing wound in an elliptical pattern a multiplicity of times, each coil being bowed correspondingly to the curvature of the pipe; the induction coils being disposed in a cylindrical surface adjacent to, and parallel with, the surface of the pipe when the ring is in the closed position; a motor for rotating the closed ring around the pipe; a source of electrical energy for applying an alternating electric potential to the induction coils t

Abstract: In order to enable formation of a smooth and dense oxide superconducting film with no clear appearance of grain boundaries in a fine structure even at a high film forming rate, a laser ablation method is employed to apply a laser beam 2 to a target 1 containing components of an oxide superconductive material and deposit particles, which are thus scattered from the target 1, on a substrate 3, while gaseous oxygen is supplied from a gaseous oxygen inlet 7 toward laser plasma 6, which is generated by the application of the laser beam 2.

Abstract: An apparatus for premetered "patch" coating discrete, incremental surfaces or substrates, such as printed circuit boards, integrated circuits and the like, with a pre-configured layer of a liquid in which a controlled volume per unit area of the liquid is applied to the substrate are disclosed. The liquid is dispensed from an applicator slot that is fluidly coupled to a liquid containing chamber. The volume of the liquid in the liquid containing chamber is varied in order to (1) sharply and distinctly start the coating "patch" by producing a pulse of liquid that flows out of the applicator slot to form a connecting bead of liquid coating on the coating surface and (2) sharply and distinctly terminate the coating "patch" by removing the bead of liquid connecting the applicator slot with the coated surface. The width of the coated "patch" is determined by the length of the applicator slot.

Abstract: Curtain coater for coating a layer of liquid photograph coating composition on a continuous web, which comprises a coating hopper (10), a roller (18) for supporting the web while moving past the coating hopper to receive a layer (16) of coating composition produced by the hopper and, arranged closely to and slightly upstream of the coating locus of the curtain on the web, an elongated brush arrangement (24) extending across the web, the bristles of which are flexible and in resilient contact with the web surface. The brush arrangement functions to reduce the effect of air carried along by the moving web on the liquid curtain in conjunction with an upstream air shield in the form of an arcuately curved plate coaxial with the supporting roller and spaced closely from the web surface.

Abstract: The invention is a spray machine for spraying liquid coating material onto the interior surface of a pipeline. The spray machine is provided with a movable frame which can be rolled on attached wheel assemblies through the pipeline and positioned with its spray gun pointing toward the interior pipe surface. The frame serves as a base to which the other parts of the spray machine attach. The spray gun and an attached hollow gun rotating shaft continuously rotate axially within the pipeline. When the spray gun is properly positioned, the spray gun is mechanically turned on and off by a cable attached to a gun actuating arm which is pivotally mounted on a bracket attached to the gun rotating shaft. The gun actuating arm is provided with a cam follower which travels in a rotating path against a movable cam plate assembly. The cam plate assembly is attached to and moved reardward by pistons of air actuated cylinders.

Abstract: Apparatus for applying powdered coating to a workpiece--particularly to electric motor armatures and stators--including features relating to handling and masking of workpieces before, during and after coating, is provided. A first feature of the invention is the inclusion of all coating steps--e.g., coating, cleaning and precuring--as modules in a single treatment station on the production line. The treatment station can also be enclosed in a single housing to contain excess powder from both the coating and cleaning processes, so that a single powder recovery system can be used to recover the excess powder from both processes. The invention also includes a handling system for removing the workpiece from the production line, inserting it into the treatment station and moving it past the various modules in the treatment station, withdrawing it from the treatment station, and returning it to the armature production line.

Abstract: The uncoated side of a running web-shaped substrate, the other side of which carries a layer containing an evaporable solvent, is contacted by at least one idler guide roller which is rotated by the substrate. The angle of contact between the uncoated side of the substrate and the peripheral surface of the guide roller is increased by streams of compressed conditioning gas which is discharged by the orifices of two venturis one of which is located immediately upstream of the guide roller and directs gas counter to the direction of advancement of the substrate. The other venturi is located immediately downstream of the guide roller and its orifice discharges gas in the direction of advancement of the substrate.

Abstract: A delivery system for delivering liquid fire retardant material to cotton batting during the course of producing the cotton batting includes a spray manifold arrangement including a liquid conduit carrying the fire retardant material under pressure, a parallel air manifold carrying air under pressure and a plurality of spaced nozzles distributed across the manifold, each of which is connected to both conduits. This manifold is physically positioned in the cotton batt producing machines just downstream of the garnetting rollers where two separate thin webs of cotton are produced. These webs are impacted by spray from the nozzles just ahead of and at the point where the webs are combined. A tank containing the fire retardant material is connected to a regulated source of air under pressure some of which is supplied to put the contents of the tank under pressure such that it flows to the liquid conduit and some of which is supplied to the air manifold.

Abstract: A delivery system for delivering liquid fire retardant material to cotton batting during the course of producing the cotton batting includes a spray manifold arrangement including a liquid conduit carrying the fire retardant material under pressure, a parallel air manifold carrying air under pressure and a plurality of spaced nozzles distributed across the mainfold, each of which is connected to both conduits. This manifold is physically positioned in the cotton batt producing machines just downstream of the garnetting rollers where two separate thin webs of cotton are produced. These webs are impacted by spray from the nozzles just ahead of and at the point where the webs are combined. A tank containing the fire retardant material is connected to a regulated source of air under pressure some of which is supplied to put the contents of the tank under pressure such that it flows to the liquid conduit and some of which is supplied to the air manifold.

Abstract: A paint spray booth utilizes longitudinal air flow along paths parallel to a path of travel through a tunnel in the booth of objects to be painted, the air flow directed inwardly from both entrance and exit ends of the tunnel. An exhaust duct for the inwardly directed, longitudinally flowing air is positioned between the entrance and exit ends and includes an exhaust slot which surrounds at least a portion of a paint spray application area within the tunnel for drawing out overspray-laden exhaust air. Maintaining flow of exhaust air along the path of travel of the painted objects increases paint transfer efficiency and minimizes contamination of paint recovered from the exhaust air. The invention finds particular advantage in powder spray booth applications and is adapted to modularization thereby enabling retrofitting of existing spray booths with apparatus arranged in accordance with the principles of the invention.

Abstract: Cleaning a device to make a film made from carbon or containing carbon as a main ingredient is carried out by etching the interior of a deposition chamber where the film is formed, with an etching gas in a plasma state selected from the group of hydrogen, oxygen, and a gaseous fluoride, and then cleaning the interior of the deposition chamber with a cleaning gas selected from the group of argon and hydrogen in a plasma state.

Abstract: A method for treating a mechanical pulp plant effluent waste stream by freezing the effluent stream and separating frozen product. The frozen product contains between about 50 to 150 ppm chemical oxygen demand (COD), and may be reclaimed.

Abstract: A kraft black liquor recovery system utilizing three separate reactors for liquor pyrolysis, sulfate reduction and carbon plus organics combustion, respectively. Oxidized black liquor is pyrolyzed in a fluid bed reactor. The temperature in the fluid bed reactor is 600.degree. C. or lower. The resulting char, containing Na.sub.2 CO.sub.3 and Na.sub.2 SO.sub.4 and a significant amount of carbon, is separated from the pyrolysis gases and introduced in an indirect heated reactor where reduction of Na.sub.2 SO.sub.4 to Na.sub.2 S takes place in the solid state under an atmosphere generated by the reduction. The reduced char is cooled and leached to produce green liquor. The leached char and gases from the pyrolysis and reduction reactors are burned in a fluid bed combustion unit operating below the melting point of mixtures of Na.sub.2 CO.sub.3 and Na.sub.2 SO.sub.4. The fluid bed particles, consisting mainly of Na.sub.2 CO.sub.3 and Na.sub.2 SO.sub.

Abstract: Partitions in a paint spray booth are adjustably coupled to a grated ceiling of the booth and extend to preselected heights above a grated floor of the booth. The adjustable partitions define a paint spray application zone therebetween wherein air flow rate between the ceiling and the floor of the booth is chosen for optimum paint transfer and overspray removal efficiency, while air flow between the partitions and the booth outer walls may be much lower to conserve investment and running costs. Air flow reducers, such as adjustable perforated plates, are positioned on the grated ceiling above the low rate air flow spaces between the partitions and the outer walls.

Abstract: A novel apparatus for the deposition of silicon and the formation of silicon films. More specifically, the process provides an aerosol generating technique, wherein silicon powder of optimum particle size is aerosolized, charged, and then electrostatically deposited onto high melting point substrates, which may include semiconducting, insulating, and conducting materials such as silicon, sapphire, and molybdenum, respectively. The powder coated substrates are subsequently heat treated at optimum times and temperatures, resulting in the formation of polycrystalline silicon films.

Abstract: A filter belt assembly located at the bottom of the inner cavity of a spray booth. The filter assembly has a plurality of first sprockets each spaced apart a predetermined distance along a horizontal axis and a plurality of second sprockets each spaced apart a predetermined distance along a horizontal axis. The second sprockets are spaced a predetermined distance from the first sprockets along a vertical axis, wherein each second sprocket is interposed between two adjacent first sprockets such that the sprockets guide a filter belt through the bottom of the inner cavity in a serpentine fashion. The filter assembly has a drive means to move the filter belt and a vacuum unit to remove excess paint powder that is disposed on the belt, as the belt moves from the booth to the vacuum. The filter belt may also have an air blower located under the filter belt where the belt vacuum is located.