Abstract:
A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath it is rotated 180null. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.
Abstract:
A catalyst composition is applied to an interior of a hollow substrate. The composition is coated on the substrate by immersing the substrate into a vessel containing a bath of coating slurry. A vacuum is then applied to the partially immersed substrate. The intensity of the vacuum and its application time is sufficient to draw the coating slurry upwardly from the bath into each of a plurality of channels located in the interior of the hollow substrate. After removing the substrate from the bath, it is rotated 180°. A blast of pressurized air is applied at an intensity and for a time sufficient to distribute the coating slurry within the channels of the substrate to form a uniform coating profile therein.
Abstract:
A method and apparatus for applying coatings to a portion of the internal bore or threads of a fastener or similar article having an opening on at least one end is provided. A 360° coating with material is provided using centrifugal force to assist in direction the material to a desired surface, which does not require use of a pressurized air stream in order to propell the coating material toward the walls of the article desired to be coated.
Abstract:
An apparatus for applying powder to at least an interior surface of a hollow object includes a powder discharge device adapted to receive powder and discharge the powder through an outlet. An object holder is configured to hold the object such that the outlet is positioned within the hollow object adjacent the interior surface. A rotating mechanism is configured to engage and rotate the hollow object such that the powder discharged from the outlet coats the interior surface as the interior surface rotates past the outlet. The powder discharge device may be a powder fluidizing bed unit including a chamber with a powder discharge opening in the form of an elongate slot.
Abstract:
Method and apparatus for applying a protective coating to the surfaces of air vents in a vented brake rotor wherein the method include the steps of rotating the rotor, directing coating material along with a stream of air toward the inlets of the vents to flood the vents with coating material to the surface, applying a suction to the outlets of the vents to remove and recover the excess material, and curing the coating. The apparatus includes fixtures for mounting the rotors that are driven to rotate the rotors during the coating operation, and for automatic operation a conveyer for advancing the rotors through a vent coating station, an exterior coating station for coating exterior rotor surfaces, and a curing station.
Abstract:
A coated film forming method is capable of readily forming a coated film of a thermoplastic material on a coated region of an inner peripheral surface of a cylinder. A nozzle, through which a molten paste of a thermoplastic material kept molten is discharged, is disposed toward an inner peripheral surface of a cylinder. The nozzle is moved along a rotational central line of the cylinder while rotating the cylinder and discharging the molten paste from the nozzle. Centrifugal force acting on the cylinder being rotated leads to spreading of the molten paste applied to the inner peripheral surface of the cylinder. Viscosity of the molten paste, a rotational speed of the cylinder and a speed of movement of the nozzle are set so as to keep the molten paste discharged from the nozzle from being scattered to a region other than the coated region.
Abstract:
A method and apparatus for applying coatings to a portion of the internal bore or threads of a fastener or similar article having an opening on at least one end is provided. A 360null coating with material is provided using centrifugal force to assist in direction the material to a desired surface, which does not require use of a pressurized air stream in order to propell the coating material toward the walls of the article desired to be coated.
Abstract:
An improved method and apparatus for coating semiconductor substrates with organic photoresist polymers by extruding a ribbon of photoresist in a spiral pattern which covers the entire top surface of the wafer. The invention provides a more uniform photoresist layer and is much more efficient than are current methods in the use of expensive photoresist solutions. A wafer is mounted on a chuck, aligned horizontally and oriented upward. An extrusion head is positioned adjacent to the outer edge of the wafer and above the top surface of the wafer with an extrusion slot aligned radially with respect to the wafer. The wafer is rotated and the extrusion head moved radially toward the center of the wafer while photoresist is extruded out the extrusion slot. The rotation rate of the wafer and the radial speed of the extrusion head are controlled so that the tangential velocity of the extrusion head with respect to the rotating wafer is a constant.
Abstract:
A method for sealing the peripheral edge surface of a disc-shaped device is disclosed. The method involves contacting the peripheral edge surface to be sealed with a sealant layer or sealant precursor layer and rotating the device so as to roll its peripheral edge surface through the sealant layer or sealant precursor layer. Removal of the device followed by a curing step completes the process.
Abstract:
Method and apparatus for applying a protective coating to the surfaces of air vents in a vented brake rotor wherein the method includes the steps of rotating the rotor, directing coating material along with a stream of air toward the inlets of the vents to flood the vents with coating material to coat the surfaces, applying a suction to the outlets of the vents to remove and recover the excess material, and curing the coating. The apparatus includes fixtures for mounting the rotors that are driven to rotate the rotors during the coating operation, and for automatic operation a conveyer for advancing the rotors through a vent coating station, an exterior coating station for coating exterior rotor surfaces, and a curing station.