Abstract: A process is provided for producing an abrasive coating on a substrate surface by applying a bond coat by low pressure plasma spraying and anchoring to the bond coat abrasive particles by electroplating and embedding the particles into an oxidation resistant matrix by entrapment plating.

Abstract: In a preferred embodiment, a method of treating a surface of said oil level sensing device to promote the shedding of oil therefrom, including the steps of: coating the surface of said oil level sensing device with a primer and permitting the primer to dry; and then, coating the surface of said oil level sensing device with a silicone solution and curing the silicone solution on the surface of said oil level sensing device.

Abstract: A method and apparatus is provided to coat the internal surfaces of a hollow article having gas flow passages by supplying a coating gas to the passages with the coating gas flow rate to at least two of the passages controlled to a different rate to deposit a coating of desired thickness on the internal surfaces of each passage.

Abstract: A liquid level gauge utilizes a liquid tight plastic envelope carrying an elongate p-c board that has a light source mounted so as to direct light laterally thereof, and a light sensor also mounted so as to receive light from a direction which is lateral of the board. The gauge further has a lens configuration which is part of the envelope, for providing a largely solid, reflective path for light which emanates at the light source and is to be received at the light sensor. The lens is capable of aiding in the establishment, at the exterior of the envelope, of a path which diverges from the solid reflective path when the exterior of the envelope is surrounded by liquid that has an index of refraction which is different from the index of refraction of the material of which the lens and envelope are constituted. Assembly is significantly simplified as compared with prior, known gauge constructions.

Abstract: The present invention generally relates to supported perovskites of the formula XYO.sub.3 where X is lanthanum, cerium or yttrium and Y is a transition metal such as copper, chromium, manganese, iron, cobalt and nickel supported on a support such as alumina, silica, magnesium aluminate, titanium oxide, zirconium oxide and mixtures thereof. In the case where X is lanthanum, some of the lanthanum ions may be replaced resulting in a perovskite of the formula La.sub.1-x A.sub.x YO.sub.3 wherein x is about 0.75 or less and A is silver or magnesium and Y is manganese or iron. Their use for low temperature oxidation of volatile organic compounds (VOCs), particularly oxygen-containing VOCs. The support may be stabilized by having an intermediate metal oxide layer on the surface of the support wherein the metal of the intermediate metal oxide may be iron, magnesium, cobalt, nickel, manganese, zinc, titanium, copper, chromium, lanthanum, barium, calcium, strontium or silver. The catalysts contain platinum or palladium.

Abstract: A combination infrared/convection dryer or oven for drying travelling webs. A shutter assembly is provided between the infrared radiation source and the moving web in order to selectively expose the web to infrared radiation. Drying efficiency is optimized by adding heated impinged air at high velocity on the machine direction ends and between the infrared elements. The air being discharged on the web is heated as it is pulled across the elements to a centralized return air duct. The return air is pulled into the inlet of a close coupled supply fan which then discharges the air to the nozzles. A portion of the air is also exhausted to atmosphere to maintain the oven enclosure in a negative pressure state, thus drawing fresh make-up air into the oven housing through the web inlet and outlet slots. Flotation nozzles can be used where contactless support of the running web is desired. Enhanced drying of the web and/or a coating on the web at high speed is achieved without a concomitant increase in dryer length.

Abstract: Air flotation dryer for floatingly drying travelling webs. The dryer includes a housing having a web inlet and a web outlet spaced from the web inlet, and a plurality of elongated air nozzles arranged transversely to the direction of movement of the web and preferably located on opposite sides of the web, the nozzles being secured directly to, supported by and in air-receiving communication with longitudinally extending supply air ducts. An air supply fan is in communication with the supply air ducts to supply air to the nozzles. Heat is provided to the apparatus with a draw-through style burner, which fires into the dryer enclosure and the proper amount of air flow to be heated by the burner (e.g.

Abstract: A regenerative thermal oxidizer in which contaminated air is first passed through a hot heat-exchange bed and into a communicating high temperature oxidation (combustion) chamber, and then through a relatively cool second heat exchange bed. The apparatus includes a number of internally insulated, ceramic filled heat recovery columns topped by an internally insulated combustion chamber. From the combustion chamber, the air flows vertically downward through another column containing heat exchange media, thereby storing heat in the media for use in a subsequent inlet cycle when the flow control valves reverse. Temperature is sensed within the bed of heat exchange media in order to monitor the temperature profile and control a bypass of hot combustion gases should the temperature exceed a predetermined level.

Abstract: A process is provided for laser drilling relatively large and deep holes in superalloy components by percussion laser drilling a central hole through the component to a diameter less than the predetermined diameter, then trepanning laser drilling around the central hole to expand the diameter of the hole to the predetermined diameter. The steps are repeated to deepen the hole.

Abstract: Regenerative thermal oxidizer in which a gas such as contaminated air is first passed through a hot heat-exchange bed and into a communicating high temperature oxidation (combustion) chamber, and then through a relatively cool second heat exchange bed. The apparatus includes a number of internally insulated, ceramic filled heat recovery columns topped by an internally insulated combustion chamber. Process air is fed into the oxidizer through an inlet manifold containing a number of hydraulically or pneumatically operated flow control valves (such as poppet valves). The air is then directed into the heat exchange media which contains "stored" heat from the previous recovery cycle. The process air is heated to near oxidation temperatures. Oxidation is completed as the flow passes through the combustion chamber, where one or more burners are located. The gas is maintained at the operating temperature for an amount of time sufficient for completing destruction of the VOC's.

Abstract: A resin composition useful as a binder is provided comprising the reaction product of an amine derivative chosen from melamine, glycolurile or their mixtures with a C.sub.1 to C.sub.8 dialkoxyethanal, the reaction product is then reacted with a polyol.

Abstract: In a preferred embodiment, a liquid level sensor for use in a hot, pressurized liquid, including: an outer housing suitable for immersion in the liquid; an inner housing disposed within the outer housing and containing therein electronic/electrical components; detection apparatus disposed within the outer housing and the inner housing to detect level of the liquid; a space defined between the outer housing and the inner housing; and means to permit the liquid which migrates through a wall of the outer housing into the space and which is vaporized therein to pass to the ambient surroundings, so as to preclude migration of the liquid through a wall of the inner housing.

Abstract: A mandrel/spindle disc for a continuous motion can decorator includes a plurality of relatively lightweight mandrel assemblies mounted on a rotating carrier with equal angular spacings between adjacent assemblies. The assemblies reciprocate radially with respect to the carrier axis as a center. Each assembly includes a base and two guide rods that extend radially inward from the base and are received by sleeve bushings that are disposed in radial holes extending inward from the carrier periphery. A plurality of relatively small grease pools are formed by small transverse holes, each of which extend forward from the rear of the carrier disc to engage the inner ends of four bushing holes. Vacuum and air pressure are fed to each mandrel assembly through a flexible hose having a large loop therein.

Abstract: A process is provided for plating a coating onto a gas turbine engine component without detrimentally effecting air flow through cooling holes by injecting a maskant into the cooling passage to fill the cooling holes with the maskant, plating the external surface of the component with a coating, then removing the maskant from the component.

Abstract: A surface sizing composition is provided for nonwoven substrates comprising a hydrophobic waxy material and a surfactantless vinyl polymer or copolymer emulsion containing as the sole emulsifying agent an alkali soluble, acid containing copolymer.

Abstract: A cigar lighter receptacle construction includes a well part and a separate safety connector cartridge part adapted to be disconnectably carried at the rear of the well part. The parts have electrical connector structures forming engageable pairs of contactors. At least one pair of contactors is in the form of telescopic cup-like formations. There is further provided a bimetallic finger carried by the cartridge part, adapted to shunt the connector structures of the cartridge part in response to overheating of the well part. The arrangement is such that both the well part and the cartridge part are relatively simple sub-assemblies which can be manufactured at greatly reduced expense by virtue of the various assembly steps being carried out largely by automated equipment.

Abstract: The present invention generally relates to supported mono charged cation delta manganese dioxide hydrate having a noble metal on the surface thereof, and to the use thereof for low temperature oxidation of volatile organic compounds (VOCs), particularly oxygen-containing VOCs. The present invention further relates to the use of the supported catalysts to reduce the amount of VOCs present in waste gases produced by processes such as baking, brewing, and flexographic printing. Catalysts prepared from the supported manganese-containing catalysts have increased resistance to poisoning in the presence of catalyst contaminants, e.g., sulfur containing compounds.

Abstract: A jacket is provided made with a conventional continuous folded collar and lapel and having a zipper for attaching an interchangeable collar and lapel member with the conventional collar and lapel providing support. and shape for the interchangeable member and at least a portion of the conventional collar and lapel is outwardly visible when the interchangeable member is attached.

Abstract: Field replacement of a damaged outlet guide vane for redirecting helical airflow into axial flow in a turbofan engine is facilitated by utilizing a replacement vane assembly that includes an elongated replacement vane having first and second mounting platforms mounted at opposite ends of the vane. The first mounting platform is fixedly secured to the inner end of the vane and the second mounting platform is mounted so as to be movable from the outer end of the vane toward the inner end thereof. With the second mounting platform at the outer end of the vane, that mounting platform constitutes a substantial bulge which is positioned so as to limit the ability to maneuver the vane in a confined space. By moving the outer mounting platform toward the inner end of the vane, it is easier to maneuver the vane in a confined space and thereby facilitate entry of the outer mounting platform over the lip of and into the outer annular casing groove that partially defines the operating position for the replacement vane.

Abstract: Control system and method for monitoring and controlling the stoichiometry of a secondary air burner in a thermal oxidizer. The burner control system secures a certain stoichiometry independent of possible simultaneous changes of the gas mixture flow rate and/or of the combustible impurity concentration in the process gas. The firing rate of the burner is adjusted by a controller. Additionally, the flow of the burner fuel and of the process gas mixture are measured and transformed into separate signals. Both signals are sent to an evaluation apparatus that compares the signals and generates a third signal based upon that comparison. This third signal is in communication with a device that changes the gas mixture flow resistance, and thus the desired amount of gas mixture will be diverted for the combustion of the fuel.