Abstract: The invention relates to an apparatus and method for controlling the emission, and recovery, of volatile solvents. In particular, this invention relates to a type of finish material applying apparatus which has become known as a robotized spraying cabinet and to methods of operating such an apparatus. In accordance with this invention, materials sprayed through the spray head and which escape adherence to a sprayed articles impinge onto overspray directing members disposed adjacent the conveyor and between the conveyor and the reservoir, a quantity of solvent for the finishing materials is retained at a location adjacent the conveyor and supplying for use in cleaning the conveyor, and the overspray directing members and retained solvent to be supplied for cleaning are chilled and thereby the vapor pressure of the volatile solvent is reduced, whereby the volatile solvent is maintained in liquid form and control over the emission thereof is facilitated.

Abstract: A method and apparatus for coating a fastener, particularly a fastener with a head portion and shank portion, with a coating material is provided. The invention includes the steps of and apparatus for supporting the fasteners such that the fasteners are positioned for coating. The fasteners are conveyed such that the fasteners are moved through a plurality of operating stations and pass through a heating station where the shank portions of the fasteners are heated. Subsequently, at a material applying station, a coating material is applied to the heated shank portions. A preferred embodiment of the method and apparatus of the present invention includes supporting the fasteners on their head portions with the shank portions projecting upward, conveying the fasteners with their shank portions projecting upward for processing, heating the shank portion to a temperature above the melting point of the applied material and applying the material to the heated shank portion to form a coating thereon.

Abstract: A cover for a paint spray area grate having parallel grate blades and parallel grate cross members. The cover is provided with built-in protuberances in skirt members which lock or clamp the cover to grate cross members and with skirts which extend below the lower edge of the grate blades.

Abstract: Methods and apparatus are provided for applying a colorant material to the surface of a plastic insulation material which has been applied to an elongated material such as a metallic conductor (22) or an optical fiber which is being moved at any of a wide range of speeds along a path of travel. The coolant material is applied by nozzles which are staggered along the path of travel and which direct the colorant into engagement with the plastic insulation material at different radial directions. A first plurality of nozzles (46--46) each cause the colorant to be in a spray pattern (45) which is in the area of a plane. Advantageously, those nozzles cooperate to stabilize the conductor and prevent undulations thereof as the conductor is moved along its path of travel. A second plurality of nozzles (50--50) cause the colorant to be in a solid conical pattern (53).

Abstract: A method of applying particulate matter to a cable core comprising providing first and second chambers, both of which have entrance and exit ports, the first chamber containing particulate matter and the exit port of the second chamber containing an air wipe which includes a cable core passageway in communication with the interior and exterior of the second chamber and at least one air passageway which is in communication with the cable core passageway and has an elongated longitudinal axis disposed at an acute angle to the longitudinal axis of the cable core passageway so that gas flowing through such a passageway is directed into the second chamber; passing a cable core through the first chamber and applying particulate matter to it to form a coated core; passing the coated core through the second chamber and said air wipe; and, forcing a gas through the air passageway in the air wipe onto the coated core to remove a predetermined amount of particulate matter from the coated core and transmit same into the

Abstract: Organic vapor and particulate matter resulting from spray painting in continuous painting lines are separately collected and disposed of in a closed painting system that permits access for touch up. The painting line typically includes an automatic painting booth, a touch up booth, a flash off tunnel, and a curing oven, and a conveyer that conveys objects to be painted through the line in that order. The automatic painting booth recirculates air through a filter and through the booth to maintain proper painting conditions, and is tightly closed except for the conveyer entrance. The touch up booth has an opening through which workers have access to the painted objects, and through which a makeup flow of air is drawn to prevent particulate and organic compounds from escaping. The make up airflows to the automatic painting booth. A portion of the flow of organic-laden air is withdrawn from the automatic painting booth to maintain the air within the booth at a safe organic concentration level, and burned.

Abstract: An apparatus for depositing onto the surface of a moving ribbon of hot glass a coating formed from the reaction of at least two gaseous reactants. The apparatus includes an open-faced coating chamber in which the gaseous reactants are caused to flow in contact with the glass surface to be coated in a direction substantially parallel to the direction of movement of the glass so as to form the desired coating on the glass surface. The coating chamber opens downwardly onto, and extends across the width of, the glass surface to be coated, and has a first inlet means for providing a flow of a first gaseous reactant over the glass surface through the chamber over the width thereof, and a second inlet means constituted by an inlet channel which extends across the ceiling of the chamber over the width of the chamber for introducing a second gaseous reactant to the flow of the first gaseous reactant in the coating chamber.

Abstract: A wet scrubber is provided for use in combination with a work station in which airborne particulates are generated. The wet scrubber includes a generally horizontal partition which defines a lower boundary of the work station and a discharge structure depending from the partition. A flow of liquid is supplied into the discharge structure, and a flow of air is supplied which will carry the particulate from the work station into and through the discharge structure. A scrubber chamber is also provided into which the discharge structure projects. This chamber includes a receptacle for containing a pool of liquid. The discharge structure itself is constructed to include an elongated inlet channel and a plurality of discrete discharge tubes extending down into the scrubber chamber. The inlet channel has a top, a bottom and a pair of converging sidwalls which depend from the partition at the top of the channel.

Abstract: An apparatus for hot gas spray deposition of coatings on products in the form of bodies of revolution has a chamber accommodating a base which supports a headstock having a spindle and a tailstock having a revolving center coaxial with the spindle, and a spray gun mounted on a guide member for movement, the revolving center of the tailstock having a power actuator for axially moving the product towards the headstock, and the base having rollers for supporting the moving product, each roller having a means for its vertical movement and a rotatable shield for screening a surface of the roller from sprayed material.

Abstract: Apparatus for applying a fusible granular precursor of a protective and/or decorative coating to the surface of an article. The apparatus includes a dispenser for dispensing a stream of the fusible granular precursor in a stream of a bearing fluid, a recovery mechanism for recovering fusible granular precursor that does not adhere to the surface of the article, and mounting hardware for mounting the dispenser within the recovery mechanism. The recovery mechanism is coupled to a reclaim facility for reclaiming fusible granular precursor recovered by the recovery mechanism. The recovery mechanism includes first and second manifolds, a blower for establishing subambient pressures in the first and second manifolds, a first series of inlets generally surrounding the dispenser and coupled to the first manifold, and a second series of inlets coupled to the second manifold.

Abstract: An automobile door opening/closing device according to the present invention is provided with a robot arm capable of moving horizontally toward a door, a non-contact type sensor attached to the robot arm for detecting an upper edge shape of the door, an engaging rod attached to the robot arm and adapted to be moved vertically for insertion thereof into a glass slot of the door, and a drive means for driving the engaging rod. In operation, the robot arm is moved horizontally toward the door in close proximity to the upper edge of the door, and when the non-contact type sensor detects a specific shape of the upper edge of the door, the drive means is operated to insert the engaging rod into the glass slot, and the door is then opened or closed by a horizontal movement of the robot arm.

Abstract: A device for purifying contaminated gas, such as air drawn from an automobile painting tunnel and containing a mist of paint particles, includes an upper water feed orifice 1 connected to a lower flow channel 4 by an intermediate channel 3 which diverges progressively from top to bottom. A horizontal, transverse wall 8 is positioned beneath the feed orifice at a downstream section of the intermediate channel. Water falling against the wall splashes out in a curtain of droplets through which the air must pass, with the paint particles thus being entrained in the droplets and removed from the air flow. The low divergence angles of the intermediate channel ensures the continuous wetting of its walls to prevent clogging.

Abstract: A substantially vertical surface of an object such as a vertical rear surface of an automotive body is coated in a coating booth in which a fluid such as air is supplied a downward direction to forcibly lower a mist of floating paint particles. Paint spray guns for ejecting paint sprays are positioned perpendicularly to the vertical surface. Then, the paint spray guns are displayed with respect to the vertical surface in a direction against the downward direction in which the fluid is supplied, while ejecting paint sprays from the paint spraying means to coat the vertical surface.

Abstract: The proposed machine comprises a chamber accommodating a headstock and a tailstock. The headstock has a rotation drive, whereas the tailstock is capable of longitudinal movement along a guide. The machine also includes a rod carrying a spray gun capable of lateral reciprocations by a drive in guides secured on the carriage capable of moving longitudinally by a drive along a guide. The tailstock has a hole, whereas a table of a size smaller than the dimensions of the hole is secured on the guide. A rear wall of the chamber has a longitudinal slot, the chamber having a gate capable of longitudinal displacement and engageable with a hollow pusher secured on the carriage and receiving the rod. The drives are arranged at the outer side of the rear wall of the chamber.

Abstract: A spray coating apparatus (10) for applying flammable liquid coating material onto a work part (12), including an enclosed spray booth (14) for containing the sprayed flammable coating material in an isolated zone, an atomizer (18) positioned in the spray booth (14) for spraying the coating material onto the work part (12), and a color changer (28) disposed in the spray booth (14) and operated by pneumatic valves (24) for selecting the color of coating material to be supplied to the atomizer (18). Compressed air is supplied from a source outside the spray booth (14) to each of the pneumatic valves (24) on the color changer (28). Intrinsically safe electric solenoid valves (38) are disposed in the spray booth (14) for controlling the compressed air sent to particular pneumatic valves (24) at the color changer (28) so that the proper color of coating material is quickly fed to the atomizer and so that the apparatus (10) can be quickly assembled at locations remote from the place of manufacture.

Abstract: A painting machine unit including a painting booth having a side wall with a substantially vertical wall portion insertable in an opening in the booth side wall and having a viewing window therethrough. The unit also includes a painting machine attached to an inner side of the wall portion and has a device for automatic painting of objects within the booth, and a control unit for controlling the device for automatic painting of objects within the booth. The control unit attaches to an outer side of the wall portion and is surrounded by a control chamber housing for accommodating painting booth operator.

Abstract: An air curtain conveyor protection system that prevents airborne particles from entering a slot through which the product support members extend from the conveyor mechanism housing into the product treatment booth. A continuous stream or curtain of high velocity air flows across the slot in the conveyor housing, exiting from an outlet or supply nozzle formed by a plenum on one side of the slot and entering into a suction nozzle formed on the opposite side of the slot by a second plenum. A fan or blower is associated with each plenum to force ambient air through the supply nozzle and to draw air through the suction nozzle. Ambient air flowing between the nozzles forms an air curtain across the slot to prevent ingress of the deleterious atmosphere in the product treatment booth into the conveyor housing.

Abstract: A coating method and apparatus allows coating of a paper substrate from any point from the first de-watering stage to a fully dried stage. The method includes the making of a fog from a coating slurry, and directing the fog to a nozzle that does not physically contact the substrate. An air current normally carries the fog; but, electrostatic charges can be applied to the substrate and the fog to cause the fog to be attracted and adhere to the substrate. Vacuum chambers contiguous with the nozzle pick up excess fog and deliver the excess to a separator for recycling.

Abstract: A spray booth (1) for use when spraying artwork is of pyramidal shape, and foldable for storage. An aerosol spray may be applied to the artwork via an aperture (6) at the apex of the pyramid which can then be closed by a flap (7) while the aerosol settles.

Abstract: Sheet material is fed from a sheet supply station to a sheet receiving station and is guided by guiding means which define the floor as well as the side walls of a spray chamber. The sheet material can be replaced when soiled by advancing a new length from the supply station to the receiving station.

Abstract: A moveable enclosure for use in applying a sprayed material on the surface over which the enclosure is moved includes a frame assembly defining a plurality of side walls with rollers for movably supporting the frame. A mesh skirt is supported by the frame adjacent the plurality of side walls and is positioned with its lower edge adjacent the surface. A mesh top canopy is positioned on the top of the frame with its lower edge overlying the upper portion of the skirt to complete the enclosure.

Abstract: A coating applicator is provided for depositing a film on a surface of glass and other substrates by chemical vapor deposition. The applicator includes a pair of opposing coating nozzles for applying a vaporized coating chemical reactant in a carrier gas to the surface at such a concentration and velocity that coating of the surface is achieved under substantially reaction rate controlled conditions. Each coating nozzle is positioned adjacent the surface with a small clearance therebetween which is open to the outside atmosphere. The opposing coating nozzles are directed toward each other at a selected angle with respect to a normal to the surface of the substrate. The angle and the clearance provides a condition where there is substantially no intermixing of coating vapors with the outside atmosphere.

Abstract: A powder spray booth (10) for spray coating articles with resinous powder is disclosed. The booth comprises a spray chamber (12) which is secured to a base portion (14). The base portion (14) comprises a clean air plenum section (36) and a trough-like oversprayed powder collection section (34) which is located directly below the spray chamber (12). Filter media (50) are secured to cantilevered filter supports (52) mounted on an interior wall of the powder collection section in fluid communication with the clean air plenum section (36) and the spray chamber (12). The spray chamber (12) is provided with front (16) and rear (20) wall panels comprising lightweight nonconductive lift-up/slide-out panels which may be easily removed to provide wide open access to the spray chamber (12), filter media (50) and collection section (34) to facilitate cleaning and reduce downtime associated with color changeovers.

Abstract: A ventilated work chamber, e.g., a paint booth, large enough to allow a worker to move about inside is improved by confining the zone (or path) of the fresh ventilating air to just a portion of the cross section of the chamber, and providing means for shifting the location of the ventilating air zone from one place to another in the chamber, as the worker changes his location.

Abstract: A spray booth for coating photographs with lacquer has a hooded work area exhausted through a filter to capture overspray and solvents. A perforated work holding platen is provided together with a pre-heating and drying air supply to minimize blushing of the lacquer coat. The spray gun is a low pressure heated system that is track-mounted for uniform coating by unskilled operators.

Abstract: An electrostatic powder coating booth has double walls which can be evacuated to hold replaceable cover foils thereagainst so that, for a color change, a contaminated stretch of foil can be replaced by a fresh stretch of foil.

Abstract: Apparatus for pyrolytically forming a metal compound coating on an upper face of a hot glass substrate 1 comprises conveyor means 2 for conveying the substrate 1 in a downstream direction 3. A coating chamber 6 opening downwardly onto the path 1 and means 7 for spraying coating precursor downwardly towards the substrate.The spraying means 7 is located to spray the coating precursor solution from a height above the substrate path 1 of at least 75 cm. Heating means are provided for supplying heat to the spraying zone 9. Means such as aspirator boxes 39 is provided for generating aspirating forces on atmospheric material within the passageway 13 to encourage such material to flow along the substrate path to the downstream end (27) of the passageway and to enter exhaust ducting leading such material away from the substrate path.

Abstract: A booth for applying a powdered coating to the surfaces of workpieces in which a clean gas zone is joined to the coating zone via the rear wall, which is connected to an extractor fan. Located in a recess of the rear wall is a frame-like structure, the outer frame of which is split up into individual areas by means of frame cross-members each area receiving a filter element, which is housed in an interchangeable cassette, and consisting of a continuous zig-zag shaped or wave-shaped surface-membrane filter strip. Each area of the frame is covered in a leak-proof manner by a protective hood in hood space in an oblique manner towards the coating zone and detach the excess powder attached to the membrane applied thereon, which is diverted through a slat-type screen down to the floor of the booth and into a powder container. Thorough cleaning can be effected by a second cleaning device arranged in the coating zone or after removal of an interchangeable cassette from the booth.

Abstract: A painting system for painting a finned-tube heat exchanger suspended from a conveyor line so as to be conveyed thereby, comprises: (i) means for spraying on said heat exchanger with a water-soluble paint; (ii) means for air-blowing on said heat exchanger; and (iii) means for electrostatic spraying on said heat exchanger with a solvent-soluble paint. Each of spray nozzle assemblies and air-blow nozzle assemblies of said means issues paint spray or air blow to fins of said heat exchanger in a direction parallel to said fins. This painting system further comprises a scraper means for recovering said water-soluble paint sprayed and reached a wall member during spraying and air blow.

Abstract: A rotary type electrostatic spray coating device comprising two or more side spray coating units having two or more spray heads separated from each other at a distance larger than a width of the coating pattern of each spray head, and the same negative high voltage is simultaneously applied to all of the spray heads during a spray coating operation; thus enabling a shortening of the length of the spray coating booth, improving a flatness of the paint coating on the work pieces, and completely preventing an undesirable deposition of paint mist on the spray heads.

Abstract: An apparatus for dislodging particulate powder material from the wall of a cartridge filter in the powder recovery unit of a powder spray system comprises a deflector plate mounted at the open top of the cartridge filter in the path of filtered air passing therethrough, and an air jet valve which directs a jet of air downwardly onto the deflector toward the open top of the cartridge filter so that the filtered air within the interior of the cartridge filter is pressurized and thereby reverses the direction of air flow through the filter wall to dislodge powder particles collected therefrom.

Abstract: A cover for forming a space for coating is provided above an electroconductive belt conveyor for adjusting an electric field at an end portion of a flat plate-like object to be coated, electrostatic powder coating guns pointed at the object to be coated on the belt conveyor in the space for coating are provided, and means for introducing air into the space for coating and means for exhausting the air are respectively provided. As a result, the strength of the electric field formed from the electrostatic powder coating guns to the electroconductive belt conveyor and the object to be coated is made uniform through their entire surface so that the thickness of a powder layer to be adhered to the object to be coated is made uniform from its central portion to an end portion. Consequently, the waste of the powder coating material is prevented, and local cracks in a portion having a great thickness generated when the coated object is bent are prevented.

Abstract: A powder coating booth a function of supplying air though its ceiling. Sidewalls of the booth is formed from an insulating material or a semiconductor. A belt conveyor is disposed at the bottom of the booth. An electric field is formed so that it extends from a paint gun to the conveyor belt. The majority of oversprayed powder paint produced during painting becomes attached to the upper surface of a portion of the conveyor belt, is carried, together with this belt portion, to the outside of the booth, and is recovered from the conveyor by a blowing-type of static eliminator, thereby minimizing the mount of oversprayed powder paint mixed in an exhaust of the booth drawn through the sidewall.

Abstract: A painting installation with several treatment zones and a system for washing-out paint mist by means of circulated water, in which for each treatment zone or group of treatment zones with similar solvent concentration in the exhaust air, a closed-cycle water circulation of its own is provided. The gasing out of solvents out of the water in zones with low solvent concentration is avoided thereby, and the solvent emission of the painting installation is markedly reduced.

Abstract: A lumber end sealing machine involves a pass-through design utilizing a single exhaust system and the use of traveling and rotating sealer paint spray guns. An exhaust chamber is centered over the conveyor with spray guns located at both the conveyor entrance and exit openings of the exhaust chamber. The spray guns are formed to both transversely and rotatingly pass through an end face of the package of lumber which is stopped at the center of the exhaust system. The spray guns are supported on a vertical rod suspended from a carriage with transverse movement through the use of a pneumatic rodless piston and rotational movement of the spray guns by rotation of the vertical rod by means of a cam follower mechanism engaged with a curved profile bar.

Abstract: The filter is formed by a wall (6) separating a vacuum chamber (3a, 3b) from a space (1) where a paint spray gun (2) is located. The lower part (5) of the wall (6) dips into the water of a collecting tank (7). The wall (6) is pierced by a multiplicity of holes, in each of which is fastened a tube (8) projecting on its two faces. On the same side as the vacuum chamber (3a, 3b), each tube is equipped with a deflector (10) at its outflow. Water from a reservoir (11) flows off via an overflow (12) and streams (15) over the entire upstream face of the wall (6). This water rebounds on the projecting parts of the tubes (8), and the shape and size of the pent roofs (9) guarantee that the tubes (8) suck up the best possible mixture of air and water. This assists the capture of paint droplets by the water. The deflectors, by compelling the mixture of air and water laden with paint droplets or other impurities to change direction abruptly, assist the capture of these droplets by the water.

Abstract: A robot positioner for a device which is positioned within a compartment having an open top and including first and second supports mounted above the compartment to move the device along "X" and "Y" coordinates. A flexible cover means associated and movable with each of the first and second supports is provided to in effect provide a movable ceiling for constantly covering the open top of the compartment regardless of the position of the device in the compartment as controlled by the supports.

Abstract: An electrostatic powder coating installation which includes a cabinet for accommodating a device for producing electrostatically charged powder, with a filter strip being disposed in the cabinet at a bottom end thereof. A suction system is provided which includes at least one movable suction nozzle and one suction air duct functionally connected with the suction nozzle with a suction blower. The suction nozzle is functionally connected with a drive belt, with the belt moving the nozzle transversely to the suction air duct. The suction nozzle is reciprocated by at least one motor driven belt, with the belt simultaneously serving as a sealing element for a slot provided along a length of the suction air duct.

Abstract: A method and an apparatus of disposing dust produced during a process for forming an amorphous silicon film, which method and apparatus, for the purpose of safely and quickly collecting the dust and of making it possible to form the collected dust to a solidified mass or pellet form to facilitate subsequent handling thereof, comprises: dust-capturing means for collecting the dust adhering to either the entire or partial portions of the film-forming unit without causing scattering of the dust to the outside of the apparatus; a dust hopper capable of receiving, through a pipeline, the dust collected by the dust-capturing means; a bucket filled with a trifloro-trichloro-ethane liquid to render to a slurry-form the dust supplied thereinto an appropriate rate from the dust hopper; and a heat-distilling means to distill the trifloro-trichloro-ethane liquid by heating the bucket to retain therein solidified mass or pellets of dust.

Abstract: A coating hood for applying uniform protective coatings to glass containers, while minimizing the escape of noxious fumes from the hood to the ambient atmosphere, which includes a pair of spaced side walls having inclined end surfaces adjacent the entrance and exit ends to reduce the amount of stagnant ambient air thereat; coating air supply slots in the side walls for supplying process air to the containers; and finish air supply slots positioned at a height above the coating air supply slots for supplying coating free air.

Abstract: Apparatus for use in pyrolytically forming a metal oxide coating on an upper face of a hot glass substrate 1 in sheet or ribbon form comprises conveyor means 2 for conveying the substrate 1 in a downstream direction 3 along a path also indicated at 1 and a roof structure 5 defining a coating chamber 6 opening downwardly onto the path and comprising a passageway 11 along which coating precursor vapor and oxidizing gas can be conducted downstream in contact with the upper substrate face during the conveyance of the substrate. The roof structure 5 defines, in or adjacent the upstream end of the passageway 11, a mixing zone 7 which opens downwardly onto the substrate path 1. Means such as spray nozzle 35 is provided for injecting coating precursor material into the mixing zone 7 from a height of at least 50 cm above the level of the substate path 1.

Abstract: Methods and apparatus are provided for applying a colorant material to the surface of a plastic insulation material which has been applied to an elongated material such as a metallic conductor (22) or an optical fiber which is being moved at any of a wide range of speeds along a path of travel. The colorant material is applied by nozzles which are staggered along the path of travel and which direct the colorant into engagement with the plastic insulation material at different radial directions. A first plurality of nozzles (46--46) each cause the colorant to be in a spray pattern (45) which is in the area of a plane. Advantageously, those nozzles cooperate to stabilize the conductor and prevent undulations thereof as the conductor is moved along its path of travel. A second plurality of nozzles (50--50) cause the colorant to be in a solid conical pattern (53).

Abstract: A paint spray booth with a filter and means within the spray booth to incinerate paint from the filter. A filter particularly adapted for collecting paint overspray in a paint spray booth. The filter has a plurality of members with a first portion parallel to the path of the air and paint particle flow which is to be filtered, each of the members having a second portion extending normally in a first direction from the downstream side of the first portion. The second portions of the members are spaced from each other and form openings therebetween on a plane normal to the flow of air and paint particles. Each of the members has a third portion extending from the other side of first portion and in the opposite direction from the second portion, and the third portions of the members form slots between members with areas less than the area of the downstream openings.

Abstract: A method and apparatus for spraying particulate powder material into a continuous roving or tow formed of individual strands comprises a hollow spraying chamber having inlet and outlet guides for receiving the tow moving axially therethrough. A stream of air-entrained particulate powder material is injected into the hollow spraying chamber, at an angle relative to the direction of movement of the tow, with a velocity such that the individual strands of the tow are separated from one another and the particulate powder material is lodged between the exterior surfaces of adjacent strands throughout substantially the entire thickness of the tow.

Abstract: An automatic painting apparatus comprising a spraying booth having ceiling openings through which ventilating air is delivered to the spraying booth in downward laminar flows. The spraying booth houses a portal framework including a pair of vertical frames disposed on both sides of a conveying track of articles under a spraying treatment, and a cross frame extending between the vertical frames over and across the article conveying track. The cross frame carries spray guns for spraying paint downwardly. A spray gun moving mechanism connects the cross frame to the vertical frames to be dispaceable longitudinally of the cross frame. One of the vertical frames includes a cross frame drive mechanism for reciprocating the cross frame longitudinally thereof.

Abstract: A method and apparatus for spray-coating the marginal area of a surface includes an air nozzle movable with the spray head for directing an air curtain against the surface spaced from the edge to limit coating spray from the head to a determined marginal area and vacuum means disposed adjacent the edge of the surface and movable with the air nozzle means for withdrawing airborne coating particles from the spray area at the side opposite the air curtain.

Abstract: An apparatus for recovering a grannular material which is dispensed onto articles to be coated by the grannular material in an enclosure but not all of which grannular material adheres to the articles. The apparatus includes a belt of a material which is essentially impermeable to the grannular material, and a pair of rolls about which the belt is trained. The rolls extend generally horizontally and generally parallel to each other. The belt has a vertically upper, generally horizontal run and a vertically lower, generally horizontal run. The vertically upper run of the belt is exposed to the interior of the enclosure. The non-adherent material is deposited onto the upper run. A hopper for recovering the non-adherent material deposited on the upper run is provided adjacent and vertically below the rolls. A prime mover is coupled to the rolls to cause non-adherent grannular material to be conveyed to the hopper.

Abstract: A generally rectangularly shaped powder coating booth of a powder spraying apparatus is fomed of two main sections, each of which is constituted of wall and roof elements which are swingably interconnected to one another. The walls and roof of each half of the booth may be straightened out to form a flat, continuous and rectangularly shaped surface from which residues of powder may be removed easily and rapidly. Thus when the two halves of the booth are flattened out the booth is transformed into two parallel and spaced surfaces which can be cleaned by being vacuumed by a respective suction nozzle that is disposed to travel over and vacuum the surfaces automatically.

Abstract: Vessel mouths (1) are provided with a silane coating in order to improve the pouring behavior. For this purpose, there is an apparatus which has, on a rotatable nozzle holder (14), several spray nozzles (16) and blowing nozzles (17) directed tangentially to the edge (1a) of the vessel mouth (1). A stationary nozzle mandrel (12) forms, by means of its lower centering portion (13), a centering means for the vessel mouth (1). An air flow flows from the centering portion (13) out of air nozzles (20) directed rearwards and prevents spray material from penetrating into the vessel (2). The spray residues and solvent vapors which occur are sucked off from a suction bell (21) surrounding the vessel mouth (1).

Abstract: A booth in which components are cleaned by high pressure water ejected from a nozzle assembly associated with a robot. The robot is adapted to move the nozzle assembly along multiple axes so as to enable the nozzle assembly to reach various areas of the components to be cleaned. The nozzle assembly and part of the robot are located in the booth but substantial portions of the robot are located outside of the booth in order to avoid the need for waterproofing those portions. To enable the robot to operate while located partially within and partially outside of the booth, one wall of the booth is formed by groups of slidable panels which expand and contract to accommodate the robot as the robot is moved. In one embodiment, the panels form the ceiling of the booth and, in a second embodiment, the panels define one upright side wall of the booth.