Hoods Patents (Class 118/DIG7)
  • Patent number: 6129039
    Abstract: An apparatus and method for evenly applying an atomized adhesive for bonding a die to a leadframe is disclosed. In one embodiment the apparatus includes a hood in communication with an air supply and a vacuum plenum that encompass a semiconductor device component located in a target area during adhesive application so that the adhesive is selectively applied to specific portions of the leadframe or other semiconductor device component and adhesive is not allowed outside the system. A mask or stencil may be employed for further prevention of adhesive application to undesired areas. An air purge may be employed to direct the adhesive mist toward the component to be coated. In another embodiment, a fine adhesive spray is directed against the surface of the workpiece to be coated, selected areas being masked to prevent coating. Wafers may be coated as well as leadframes.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: October 10, 2000
    Assignee: Micron Technology, Inc.
    Inventor: Sven Evers
  • Patent number: 6117237
    Abstract: The coater apparatus enclosure encloses the entire die of a coating apparatus includes an enclosure structure, a saturation station which saturates a supply gas with solvent, a device which supplies solvent-saturated gas to the enclosure to continuously purge the enclosure, and a device which controls the gas flow to the enclosure. The saturation station could include a heated jacketed vessel and a porous metal bubbler, or it could include a series of heat exchangers. No streaks can form due to coating fluid drying on the die lip because the gas supplied to the die enclosure is saturated with the solvent.
    Type: Grant
    Filed: January 4, 1994
    Date of Patent: September 12, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Robert A. Yapel, Kent D. Nelson, Thomas M. Milbourn, Richard J. Foss
  • Patent number: 6068702
    Abstract: Apparatus for powder coating various types of parts using different powder coating techniques. The apparatus includes a powder coating hood in which the coating operation takes place and a powder collection booth connected to the hood for drawing air and excess powder out of the hood. An air circulation system is provided in the collection booth for drawing excess air and powder from the hood. An air flow regulator is provided to adjust the draw of air and powder between low and high amounts. A low amount is, for example, useful for electrostatic fluidized bed coating, while a higher amount may be useful for spray coating techniques.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: May 30, 2000
    Assignee: Nordson Corporation
    Inventors: Christopher Bertellotti, Jennifer Daling, Visveshwar Reddy, David Seales, Vincent Sutton
  • Patent number: 6066207
    Abstract: A powder coating booth for performing therein powder coating onto an article to be coated is divided into an automatic coating zone in which coating is performed only by automatic coating machines and manual coating zones in which coating is performed by a worker. A dry type of first recovering apparatus which recovers only that powder coating material in the automatic coating zone which has not been coated onto the article to be coated is provided separately from a second recovering apparatus which recovers that powder coating material in the manual coating zones which has not been coated onto the article to be coated. In this manner, the ratio of reuse of the recovered uncoated powder coating material is improved.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: May 23, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Arai, Yukihide Yamashita, Masayuki Yamaguchi, Kenichirou Mori
  • Patent number: 5922130
    Abstract: A spray booth includes an outer enclosure in which the temperature and humidity of a fluid (such as air) is not controlled and a fluid handling unit within this enclosure, which circulates and controls the temperature and humidity of a smaller volume of the same fluid (air) to develop an environment suitable for application of coatings to desired substrates. In use, fluid is drawn from the outer enclosure into the inner, fluid handling unit in order to clean and modify the temperature and humidity of the fluid being handled, conditioning it to be delivered to the region of limited size which is established for receiving the substrate to be coated.
    Type: Grant
    Filed: March 31, 1997
    Date of Patent: July 13, 1999
    Assignee: Sermatech International, Inc.
    Inventors: Mark F. Mosser, Bruce McMordie
  • Patent number: 5853811
    Abstract: The present invention is directed to a shield fabricated from a sheet of material having a trough disposed on the lower edge and peripheral flanges disposed about the remaining edges for confining excess spray/mist when positioned rearwardly of an object being painted, cleaned or otherwise treated, and directing it to the trough where it is collected and discharged. More specifically, the shield is fabricated from any of a variety of materials including cardboard, plastic, tin, stainless steel, etc., may optionally be provided with a coating to enhance the flow of the excess spray/mist downwardly into the trough, and is provided with means for suspending, staking or wedging the same onto support means during use.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: December 29, 1998
    Inventor: David Poague
  • Patent number: 5833751
    Abstract: A powder coating booth comprising a pair of identical polycarbonate shells disposed opposite each other to define a coating chamber having smooth, curvilinear internal surfaces to facilitate the recovery and recycle of excess coating powder. Narrowed down end openings are provided to help confine the excess powder. A thermoplastic material such as polyvinyl carbonate or polycarbonate is formed in a large thermoforming machine with vacuum and pressure to fabricate the components of the coating chamber, which may be up to ten feet wide, ten feet tall, and thirty feet long or longer.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: November 10, 1998
    Assignee: Hoosier Fiberglass Industries, Inc
    Inventor: Richard R. Tucker
  • Patent number: 5776554
    Abstract: An electrostatic powder coating system usable for coating articles transported along a substantially non-conductive article transport conveyor belt supported by a substantially non-conductive slide member. The system includes a substantially non-conductive coating booth with an open side portion supported by an upright support member disposed on a movable base member. The coating booth is laterally movable toward and away from the conveyor, and the coating booth is movable along the upright support member so as to position the coating booth downwardly toward and upwardly away from the conveyor. An electrostatic coating applicator is directed into the coating booth for applying powder coating to articles transported along the conveyor. A coating collector includes a coating booth exhaust duct coupled to the coating booth, and a conveyor exhaust duct laterally movable toward and away from the conveyor.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: July 7, 1998
    Assignee: Illinois Tool Works Inc.
    Inventors: Christopher R. Merritt, Robert M. Thorn
  • Patent number: 5741178
    Abstract: A paint booth structure and method having, in one form a specially shaped painting volume wherein the painting occurs is provided with an air flow system to carry away paint overspray and a decreasing cross-sectional area in the direction of air flow to cause an increasing velocity air flow where the painting occurs.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: April 21, 1998
    Assignee: Binks Manufacturing Company
    Inventor: Steve E. Telchuk
  • Patent number: 5681390
    Abstract: A spray booth in which objects are coated by spraying with a finely divided coating material, the booth including: a housing composed of a ceiling which has a lower surface, a plurality of walls each having an inner surface and a floor, the surfaces delimiting a spray space; a system for recovering finely divided material not deposited on the objects; at least one scraping bar for scraping finely divided material off of at least one surface selected from the lower surface and an inner surface; and an operating mechanism for supporting and displacing the scraping bar along the at least one surface. The booth is scraped by first scraping one of the lower surfaces of the ceiling and the inner surface of at least one of the walls, and then scraping the floor.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: October 28, 1997
    Assignee: Sames S.A.
    Inventor: Adrien Lacchia
  • Patent number: 5585143
    Abstract: Objects which have been abraded are coated with a coating material which is normally solid at room temperatures. The material is liquified at elevated temperatures and sprayed onto the cooler objects in a heated cabinet, whereupon the material at least partially solidifies on the object. Thereafter, heat is applied to the coating material to cause it to flow out over the coat surface. A cooled conveyor system prevents disruption of the coating material. Overspray is maintained in liquified form within the cabinet where it is reclaimed and flows to a heated sump for direct recirculation to the spray apparatus. There are no deleterious solvent emissions. Apparatus and methods are provided.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: December 17, 1996
    Assignee: Nordson Corporation
    Inventors: Donald R. Scharf, Douglas J. Conrad, Kenneth J. Coeling
  • Patent number: 5518543
    Abstract: A spraying apparatus having a continuously moving conveyor belt which brings a vessel rim down to a spraying station, arrests movement of the vessel and aligns it with a vacuum gripping head, grips the vessel bottom and lifts and presents the vessel to a sprayer, rotates the vacuum gripped vessel rapidly to apply a plurality of thin layers of coating, and returns the coated vessel to the conveyor and releases the grip on the vessel so that the continuously moving conveyor can discharge the coated vessel from the spraying station.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: May 21, 1996
    Assignee: Anchor Hocking Corporation
    Inventors: Michael L. Pietrowski, Gordon D. Norlin, Thomas J. Mohr, Charles R. Williams, Thomas J. Haug, John W. Herrmann
  • Patent number: 5397394
    Abstract: A powder coating booth and a recirculating air system is provided for electrostatic coating of articles. The booth includes an operator compartment and a spray chamber. A recirculating fan supplies air to the operator compartment which passes through a window into the spray chamber. The fan also provides air flow through orifice plates at the top of the spray chamber to surround the articles in a controlled manner. The fan additionally supplies air against the back wall of the spray chamber. All of the air in the spray chamber is passed through a reclamation filter and back to the fan. The entire system can be provided on a mobile base.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: March 14, 1995
    Assignees: The Fishing Group, The Andersons
    Inventor: Jerome D. Orr
  • Patent number: 5340398
    Abstract: A foliage coating and treating apparatus is provided for treating plants with a coating in a manner which advantageously removes excess coating from plants passing through the apparatus. The apparatus includes a coating stage wherein the plants are coated with a coating and a hanging stage wherein the plants are hung on a conveyor. The apparatus further includes a blowing stage wherein the plants are blown with air to promote drying and removal of excess coating and/or preserving liquid. To remove excess coating from the plants, the apparatus includes a coating removal stage which employs a booth having first and second opposed side surfaces between which the plants pass on the conveyor. The booth also includes a plurality of first air vents situated on the first side surface and a plurality of second air vents situated on the second side surface, each of the first air vents being laterally staggered with respect to the second air vents.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: August 23, 1994
    Inventors: Jack L. Wayne, Sr., Jack L. Wayne, Jr.
  • Patent number: 5332162
    Abstract: An electrostatic spray apparatus, including a spray hood having an electrode. The hood defines a top region with a depending skirt and comprises first and second hood elements, either or both of which may comprise molded shells, with an electrode sandwiched therebetween. The electrode extends over the top region and down the skirt and terminates short of the lower regions of the skirt. The hood is constructed such that, other than at the lowermost regions of the skirt, the hood does not have any junction of its planar surfaces having a radius less than one hundred and fifty millimeters. The hood has an opening in its top region, through which an electrostatic spray head is placed into the hood. The electrode presents a connection for an electrical supply, and the potential applied to the spray head is substantially the same as that applied to the electrode.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: July 26, 1994
    Inventors: Arthur G. E. Peck, deceased, by Margaret Peck, legal representative
  • Patent number: 5326399
    Abstract: A coating device for coating a cathode-ray tube with a layer has a booth for accommodating a cathode-ray tube to be coated. The booth houses a coating robot with a spray nozzle for spraying a coating solution onto the cathode-ray tube in the booth to coat a layer on the cathode-ray tube. The inner wall surfaces of the booth are lined with a water-containing member which is supplied with water from a water supply pipe connected to the booth. An air-conditioning unit is mounted on the booth for controlling the temperature and humidity in the booth. The cathode-ray tube is introduced into the booth from a conveyor through an opening defined in a wall of the booth and fitted with a selectively closable door.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: July 5, 1994
    Assignee: Sony Corporation
    Inventor: Takumi Takamura
  • Patent number: 5316794
    Abstract: A process and apparatus is disclosed for providing access to the interior of a vacuum deposition chamber in a vacuum deposition apparatus without exposing residues, such as chlorosilane residues, within the chamber to moisture and/or oxygen-containing gases. The process comprises first placing over the upper surface of the vacuum deposition apparatus an enclosure which has a bottom opening large enough to completely cover the top opening to the chamber, and which is capable of being filled with one or more non-reactive gases. One or more non-reactive gases are then flowed into the enclosure to purge moisture and/or oxygen-containing gases from the enclosure. After the enclosure has been mounted on the apparatus and purged by the flow of non-reactive gases therein, the vacuum deposition chamber may be opened, while continuing the flow of non-reactive gases into the enclosure.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: May 31, 1994
    Assignee: Applied Materials, Inc.
    Inventors: David K. Carlson, Norma B. Riley
  • Patent number: 5296029
    Abstract: An arrangement for affecting the motions of gasborne, especially air-borne, particles at a movable device, (5,6) comprises an enclosure (12, 22) which encloses said device (5,6) and is connected to a means (16, 28) for supplying or discharging a gas, such as air, to and, respectively, from said enclosure in such an amount that a positive pressure or a negative pressure is maintained therein. Moreover, the enclosure (12, 22) is made of a flexible, gas-permeable material which provides a substantially laminar gas flow downstream of the enclosure and which does not generate particles.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: March 22, 1994
    Assignee: ABB Flakt AB
    Inventor: Kenneth Neikter
  • Patent number: 5296031
    Abstract: An electrostatic powder spray coating system for car bodies is disclosed. Above the car bodies (14) are moved through the cabin and from which the spray organs (94) are supplied with powder. The powder container (92) is supplied with fresh powder and recycled powder from a supply container (36). Short paths between the powder container and spray organs allow precise metering and therefore a good coating quality. The spray coating is applied within an arrangement of inner and outer cabins which allows pressurizing of space between the cabins to prevent ingress of atmospheric air into and egress of powder out of the system.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: March 22, 1994
    Assignee: Gema Volstatic AG
    Inventors: Daniel Seiler, Heinz Hofler
  • Patent number: 5284518
    Abstract: A spray booth ventilation system is adapted for receiving long, slender workpieces suspended from an overhead monorail conveyor. The pieces are carried into and out of this booth, where the paint is applied by conventional equipment. The gases within the booth, which are a mixture of fresh air and evaporated paint solvents, is partially recirculated and re-injected into the booth at discharge orifices defining the edges of the entrance of the booth. Arrangements are provided for equalizing the flow throughout the booth in a vertical direction to avoid points of stagnation which might cause fumes from the booth to emerge from the opening, so that the velocities of the inflow can be minimized to eliminate the danger of collision of the parts as they swing in response to the gas flow, and thus cause damage to the painted surfaces.
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: February 8, 1994
    Assignee: Belco Industries, Inc.
    Inventor: Michael T. Kohn
  • Patent number: 5279631
    Abstract: A cabin for spray coating objects with powdered material has flat filter surfaces and a cleaning device that moves relative thereto. The rear face of the filter is divided into a plurality of individual cell shaped sections sealed with respect to one another. A nozzle directs air from the rear face of the filter toward the interior of the cabin to dislodge powdery material from the filter's inner surface. The nozzle moves across the field of cell shaped sections supplying compressed air to at least one of the sections at a time during the cleaning cycle.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: January 18, 1994
    Assignee: Farb-Tec Gesellschaft fur Beschichtungskabinen Systeme mbH
    Inventor: Joachim Pingel
  • Patent number: 5256200
    Abstract: As a liquid is sprayed onto a sheet, some of the liquid is oversprayed beyond an edge of the sheet. Two movable collectors for collecting such overspray, each having two pans arranged below the edges of the sheet, and vapor-retaining structures extending over the pans to define a plurality of narrow apertures which permit the overspray to pass into the pans, while resisting the passage of vapors upwardly through the apertures and back into the spray chamber. The vapor-retaining structure comprises a plurality of inverted V-shaped strips which are arranged parallel to one another such that the bottom edges of adjacent strips define the narrow apertures, the width of the apertures being in the range of about 1/32 to 1/4 inch. This apparatus can be used as a hazardous waste minimization effort for spray coating operations.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: October 26, 1993
    Assignee: O'Sullivan Corporation
    Inventors: Tracy Poulson, Lee H. Hirneisen, Jeffery L. Rezin
  • Patent number: 5227203
    Abstract: An electron beam is radiated on an ion-plating material to heat and evaporate this material, thereby generating a vapor flow of the material. The vapor flow of the material is converged by a hood-like electrode, and at the same time, a positive voltage is applied to the electrode to attract thermoelectrons from the material. The vapor flow is ionized by the thermoelectrons. The converged and ionized vapor flow is deposited on a surface of a strip, thereby performing ion plating.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: July 13, 1993
    Assignee: NKK Corporation
    Inventors: Hiroshi Kibe, Hiroshi Kagechika, Takeshi Sekiguchi
  • Patent number: 5215586
    Abstract: As a liquid is sprayed onto a sheet, some of the liquid is oversprayed beyond an edge of the sheet. A collector for collecting such overspray comprises a pan arranged below the edge of the sheet, and a vapor-retaining structure extending over the pan to define a plurality of narrow apertures which permit the overspray to pass into the pan, while resisting the passage of vapors upwardly through the apertures and back into the spray chamber. The vapor-retaining structure comprises a plurality of inverted V-shaped strips which are arranged parallel to one another such that the bottom edges of adjacent strips define the narrow apertures, the width of the apertures being in the range of about 1/32 to 1/4 inch. This apparatus can be used as a hazardous waste minimization effort for spray coating operations.
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: June 1, 1993
    Assignee: O'Sullivan Corporation
    Inventors: Tracy Poulson, Lee Hirneisen, Jeff Rezin
  • Patent number: 5205869
    Abstract: An overspray extractor collects the overspray of a volatile organic compound coating material sprayed onto three-piece steel cans. The overspray extractor comprises a hood having five orthogonal walls, with the bottom wall having a slot of predetermined width that is placed above the cans and downstream of the coating material nozzles. The ratio of the height of the hood between the top and bottom walls to the width of the bottom wall slot is greater than one. The hood is connected by means of a throat located opposite an outside wall to an exhaust passage. When a vacuum is applied to the hood, coating material overspray and atmospheric air are drawn into the hood through the slot and through the hood into the exhaust passage. A slit in the outside wall permits atmospheric air to be drawn into the hood to flow along and scrub the top wall of solids from the coating material that coagulate on the top wall.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: April 27, 1993
    Assignee: Harbridge, Inc.
    Inventor: Michael D. Ahern
  • Patent number: 5176307
    Abstract: A short hood for enclosing and providing a protective atmosphere over not more than the solder pot of a machine for wave soldering printed circuit boards. Other operative areas of the machine are exposed to air. The entrance and exit openings to the hood for the circuit boards are covered by electrically conductive curtains of thin material cut into vertical strips. The process employs a thin layer of no-clean flux and allows up to 5% oxygen content in the protective atmosphere.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: January 5, 1993
    Assignee: Praxair Technology, Inc.
    Inventors: Lawrence J. Hagerty, Mark S. Nowotarski, David A. Diamantopoulous
  • Patent number: 5173118
    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.
    Type: Grant
    Filed: May 20, 1991
    Date of Patent: December 22, 1992
    Assignee: ABB Flakt, Inc.
    Inventor: Leif E. B. Josefsson
  • Patent number: 5169417
    Abstract: A device for removing the excess sprayed material in a spraying operation (e.g., the spraying of wet lacquer or the like) includes a spraying booth, a suction booth and an aspirator. A partition provided with openings separates the spraying booth and the suction booth. The openings are defined as tapering nozzles so that the air and sprayed particles are passed through the nozzles at a high rate of speed. This construction minimizes the deposition of particles on the partition. Once in the suction chamber, the air flow is slowed so that the particles will dry. The aspirator is located in an upper region of the suction booth so that the particles are drawn upward. A filter is positioned in front of the aspirator to collect the dried particles. The particles thereby form filter cakes which are easily removed from the filter.
    Type: Grant
    Filed: April 23, 1991
    Date of Patent: December 8, 1992
    Inventor: Hartwig Straub
  • Patent number: 5165969
    Abstract: A paint booth facility for painting truck cabs and attachments in which electronic robots operating electrostatic paint guns apply successive coats of paint. The object to be painted is indexed through a series of spray booths, flash-off booths and finally curing ovens all of which have a contained atmosphere. The level of volatile organic compounds (VOC) in the paint booth atmosphere is not permitted to exceed 25% of its lower explosive limit but is maintained at a level that is higher than permitted in paint booths that are occupied by humans. A portion of the recirculated paint booth atmosphere is directed to a thermal oxidizer where it is ignited autogeneously, and this portion is replaced by fresh air that has been conditioned.
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: November 24, 1992
    Assignee: Navistar International Transportation Corp.
    Inventors: Jack D. Barlett, Robert D. Grear, Ronald C. Read, William E. Harrison, James R. Hutchens
  • Patent number: 5162132
    Abstract: A collapsible spray housing and method of using the housing in electrostatic powder spray operations. The housing is collapsible so that it can be folded and inserted into a conventional cartridge filter type powder recovery system. Separate collapsible housings may be maintained, each interconnected with a respective cartridge filter, dedicated to running one particular color therethrough. A skeletal frame may be employed upon which the various collapsible housings may be inserted and removed between successive runs different colors.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: November 10, 1992
    Assignee: Reclaim
    Inventor: William Diaz
  • Patent number: 5152839
    Abstract: Sheet material is fed from a sheet supply station to a sheet receiving station and is guided by guiding means which defines a downwardly converging spray chamber floor and spray chamber side walls. The sheet material can be replaced when soiled by advancing a new length from the supply station to the receiving station.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: October 6, 1992
    Assignee: Volstatic Limited
    Inventors: Geoffrey M. Boyce, Ferdinando Trevisan
  • Patent number: 5153034
    Abstract: A paint spray booth apparatus and method, particularly for automated paint applications, is illustrated and disclosed. The booth has a spray painting chamber and a plenum thereabove. Unlike prior art booths, the plenum of the present invention provides air flow only where needed to control overspray, and generally the plenum is only 60%, or less, in width or cross-section than the prior art, full ceiling width plenums. In carrying out the method of the present invention air is supplied from the plenum to the spray painting chamber only where needed to control overspray so that consequently the quantity of air utilized is substantially less than in prior art booths with air flow from their full width plenums. In certain booths where painting occurs on both sides of the booth, it is advantageous to provide the plenum in the form of two or dual plenums, each offset from the center of the booth.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: October 6, 1992
    Assignee: Binks Manufacturing Company
    Inventors: Steve E. Telchuk, Leslie H. Brown
  • Patent number: 5153028
    Abstract: A powder coating system particularly adapted for coating large objects such as automotive and other vehicle bodies comprises a spray booth having a manual/robotic spraying area for the application of powder to the inner door flanges and other hard to reach areas of the vehicle body using manually or rotatably operated powder dispensers, and an automatic spraying area wherein the remainder of the vehicle body is coated using automatically manipulated powder dispensers. A powder collection and recovery system is associated with the spray booth which includes removable cartridge filters arranged in V-shaped filter banks within powder collection chambers beneath the floor of the booth, a system for the transfer of powder collected in the powder collection chambers to hoppers located exteriorly of the booth and an air exhaust system for equalizing the negative pressure within clean air chambers which receive clean air after filtering by the cartridge filters.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: October 6, 1992
    Assignee: Nordson Corporation
    Inventors: Jeffrey R. Shutic, Robert J. Holland, Phillip R. Barnett, deceased, Thomas E. Hollstein
  • Patent number: 5146868
    Abstract: A self contained recirculating powdering and vacuuming assembly and the airflow discharge manifold therfor. The vacuum assembly includes a blower operably connected within a housing having a low and high pressure region. A powder tray is mounted beneath a first outlet at the bottom of the low pressure region and is structured to hold a quantity of powder for controlled depositing onto paper stock having a wet ink coating on preselected areas of the paper stock. This first outlet sealably transfers powder collected in the low pressure region back into the powder tray, which powder is transported by conveyor beneath the powder tray. A vacuum passage extends downward from a low pressure region inlet to a powder pickup slot positioned adjacent to the area where the powder is deposited onto the paper stock. Pressurized air is directed toward the pickup slot from either side thereof by the airflow discharge manifold which receives air from the high pressure region outlet.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: September 15, 1992
    Inventor: Cecil K. Kirk
  • Patent number: 5103760
    Abstract: A liquid to powder spray booth conversion insert compartment is provided that can be rolled up to a conventional wet paint spray booth to convert it to dry powder usage. A pleated fiber filter having a pore size of 20 microns inclined above powder collection trays is provided to allow collection and reuse of the powdered materials. A prefilter of progressive weave filter material is provided at the input side of the compartment to remove large size matter while allowing the sprayed powder particles to pass therethrough.
    Type: Grant
    Filed: December 17, 1990
    Date of Patent: April 14, 1992
    Inventor: Walter F. Johnson
  • Patent number: 5090362
    Abstract: An arrangement for galvanization of treatment goods, such as for example electronic printed circuits, comprises a plurality of successively arranged baths accommodated in bath container units having open sides, covers for selectively covering the upper sides of the container units, units for aspirating vapors located in the bath containers above a liquid level of a bath liquid, units for introducing and withdrawing treatment goods into and out of the bath. The aspirating units include air aspiration inlets located at such a distance under an upper edge of the container units that whirling of an aspirated air is substantially eliminated and a substantial part of the vapors in a space above the liquid level is entrained by the aspirated air. The aspirating inlets are arranged above a maximum bath height, and the cover being arranged at such a height and being dimensioned relative to the container units so that an air passage is produced between the cover and the container unit.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: February 25, 1992
    Assignee: Schering Aktiengesellschaft
    Inventors: Lorenz Kopp, Heinrich Knorr, Werner Rossmann
  • Patent number: 5078089
    Abstract: A spray coating booth for enclosing individual articles to be coated with a liquid spray while the articles are supported in closely spaced relation on an article conveyor for movement through the booth includes a rigid frame with fixed sidewalls and movable top and end walls which may be moved between a closed position completely enclosing an article supported on the conveyor and an open position to permit articles to be moved into and out of the booth. The movable top assures against coating liquid dripping onto and contaminating articles moving on the conveyor which are not to be coated. The end walls are supported for movement in substantially a transverse vertical plane to permit close spacing of articles on the conveyor without contact of the articles by the end walls.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: January 7, 1992
    Assignee: National Steel Corporation
    Inventors: Raymond Dugan, Daniel D. Evans, Robert Griffith, Ronald G. Mumaw
  • Patent number: 5078084
    Abstract: A powder coating system particularly adapted for coating large objects such as automotive and other vehicle bodies comprises a spray booth having a manual/robotic spraying area for the application of powder to the inner door flanges and other hard to reach areas of the vehicle body using manually or rotatably operated powder dispensers, and an automatic spraying area wherein the remainder of the vehicle body is coated using automatically manipulated powder dispensers. A powder collection and recovery system is associated with the spray booth which includes removable cartridge filters arranged in V-shaped filter banks within powder collection chambers beneath the floor of the booth, a system for the transfer of powder collected in the powder collection chambers to hoppers located exteriorly of the booth and an air exhaust system for equalizing the negative pressure within clean air chambers which receive clean air after filtering by the cartridge filters.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: January 7, 1992
    Assignee: Nordson Corporation
    Inventors: Jeffrey R. Shutic, Robert J. Holland, Phillip R. Barnett, Thomas E. Hollstein
  • Patent number: 5079045
    Abstract: A method and apparatus are disclosed for achieving and maintaining an inert atmosphere as oxygen-deficient as possible in a treatment chamber, having a reaction zone, particularly an irradiation chamber, traversed by a length of material, wherein the length of material is supplied to the chamber through an inlet channel and conducted from the chamber through an outlet channel. A circulating inert gas stream, which detaches the entrained gas boundary layer held by the material, is moved countercurrently to the length of material in the inlet channel and is supplemented in a controlled manner with fresh inert gas in such amount that a given maximum oxygen concentration is not exceeded in the reaction zone and the flow rate of the inert gas stream is controlled, so that the pressure before the exit gap of the outlet channel is the same or slightly higher than the surrounding pressure.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: January 7, 1992
    Assignee: Th. Goldschmidt AG
    Inventors: Gerhard Luhmann, Theodor Selbach, Jurgen Jachmann
  • Patent number: 5076199
    Abstract: An apparatus for the chemical metallization of open-pored foams, nonwovens, needle felts of plastic material or similar textile material, in particular those having a porosity of 45 to 98%, has three processing stations. The first processing station is a laying station, the second is a chemical metallization station and the third is a centrifugal station. The material of the substrate webs treated in the apparatus is made of polypropylene, polyethylene, polyamide, polyester or aminoplasts.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: December 31, 1991
    Assignee: Deutsche Automobilgesellschaft MbH
    Inventor: Holger Kistrup
  • Patent number: 5074238
    Abstract: An improvement for a production line, downdraft type paint spray booth having a conveyor for carrying the parts to be painted, having a recessed portion for containing the conveyor and dual slots, on one or either side of the conveyor for air flow is disclosed.The improvement provides the advantage of improved air flow around the parts being painted and around the conveyor to keep it clean. Additionally, the provision of the dual slots permits the conveyor to be at least partially recessed into the booths floor to provide a lower profile and a more compact arrangement.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: December 24, 1991
    Assignee: Binks Manufacturing Company
    Inventors: Steve E. Telchuk, Leslie H. Brown
  • Patent number: 5067285
    Abstract: A seal belt assembly for a robot mechanism for continuously covering the open top of a cabinet in which an operative device is moved along a rectilinear axis between two opposite sides of the cabinet. The belt assembly provides a belt that is sufficiently strong to sustain the weight of a worker thus avoiding injury to a worker who might accidentally step on the belt, and also provides a sound barrier reducing the noise generated in the cabinet from passing through the ceiling.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: November 26, 1991
    Assignee: Progressive Blasting Systems, Inc.
    Inventor: Martin J. Hilbrands
  • Patent number: 5063874
    Abstract: An apparatus for producing a black matrix-type phosphor screen of a cathode ray tube is disclosed, which includes a carbon coating nozzle for coating a carbon slurry on a cathode ray tube panel, a tank for containing the carbon slurry, a supplying system for supplying the carbon slurry from the carbon slurry tank into the carbon coating nozzle and a collecting system for collecting excess carbon slurry produced from the carbon coating nozzle back into the carbon slurry tank, and a carbon slurry regenerating device using an ion-exchange resin is provided. The regenerating device can be placed in at least one of the supplying system, the collecting system and the carbon slurry tank.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: November 12, 1991
    Assignee: Sony Corporation
    Inventors: Robert E. Dodds, Tsutomu Inose, Yoshimitsu Kato
  • Patent number: 5062963
    Abstract: An improved method and apparatus for removing sludge from a spray booth tank using a single pump for withdrawing liquid including sludge from the tank. A portion of the liquid from the pump is returned to the tank through eductors for agitating liquid in the tank. At least a portion of the liquid from the pump flows through a hydrocyclone separator. Sludge from the separator is collected in a settling tank. A small portion of the clarified liquid from the separator flows through an aspirator pump to the booth tank and the remainder of the clarified liquid is returned directly to the booth tank. The aspirator pump returns excess liquid from the settling tank to the booth tank.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: November 5, 1991
    Assignee: DeVilbiss (Canada) Limited
    Inventors: John Marcinkowski, Herbert W. Bennett, Kenji Niwa
  • Patent number: 5056460
    Abstract: A spray cabin for powder spray having a spray opening on one side and an let opening on an opposite side connected to a powder separator applying suction to the outlet opening has at least a baffle directing the outflow upwardly along the wall provided with the outlet opening to entrain particles which have deposited on the floor upwardly and provide a quiescent or calming chamber immediately upstream of the outlet opening.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: October 15, 1991
    Assignee: Esb Elektrostatische Spruh- und Beschichtungsanlagen G. F. Vohringer GmbH
    Inventor: Gerhard F. Vohringer
  • Patent number: 5042420
    Abstract: A painting structure for use as, by way of example, a paint spray booth or paint baking or drying oven, utilizes a trapezoidal cross-section, instead of the conventional rectangular/square or rectangular-gabled cross-section. The painting structure of the present invention provides inherent rigidity without the need for special framing, and provides more uniform air flow than a gabled roof structure, as air swirls in air pockets beneath the gables are eliminated. Due to the simplified construction, the trapezoidal cross-sectional booth of the present invention is less expensive to make and install and more easily erected.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: August 27, 1991
    Assignee: Binks Manufacturing Company
    Inventor: Donald F. Gerdes
  • Patent number: 5041312
    Abstract: Metal strip is coated with a coating material containing a volatilizable solvent and is heated in an enclosure for vaporizing the solvent. Condensation of vapors on the metal strip within the enclosure is avoided by providing an exhaust of sufficient capacity to withdraw all of the heated and vaporized solvent, after which it is burned, mixed with a gas having a temperature lower than its temperature, and returned into the enclosure and applied against the surface of the metal strip.
    Type: Grant
    Filed: February 13, 1990
    Date of Patent: August 20, 1991
    Inventor: LeRoy Swartz
  • Patent number: 5023116
    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.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: June 11, 1991
    Inventors: Larry Williams, William Hunter
  • Patent number: 4977000
    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.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: December 11, 1990
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Junichi Murayama, Kazuto Iiyama, Niichi Toyama, Katsushi Sadamitsu, Hideki Takashima
  • Patent number: 4958587
    Abstract: A machine for applying tire paint and tire sealant to recapped tire sidewalls and interiors, respectively. The machine includes a pair of tire paint applicator pads which are carried by a frame and carriage capable of reciprocal motion in three different directions to bring the applicator pads into selective engagement with tire sidewalls. The machine also includes spray nozzles carried by an associated frame and carriage for bringing the nozzles into a position to direct tire sealant into the interior of an associated recapped tire.
    Type: Grant
    Filed: June 29, 1989
    Date of Patent: September 25, 1990
    Assignee: International Marketing, Inc.
    Inventors: Robert D. Fogal, Sr., Robert D. Fogal, Jr., George E. D. Morgan