With Treatment Of Coating Material Patents (Class 118/600)
  • Patent number: 6027567
    Abstract: In a flow coater for applying coating liquid to a plate member such as a printed board by a curtain flow method, a heat exchanger unit of a temperature controller is arranged in a collection tray which is arranged below a coating liquid supplying head across a conveyance path for the plate member. This heat exchanger unit has a coil-shaped structure. The coating liquid is caused to flow down curtainly from the head to come in contact with the heat exchanger unit in which the heat exchange is carried out. Since a small amount of coating liquid comes in contact with the heat exchanger unit, an excellent efficiency of the heat exchange can be obtained, and hence it is possible to cope speedily and accurately with temperature changes. In addition, since after the coating liquid has flowed down from the head, the coating liquid flows naturally down in the tray while contacting the heat exchanger unit, there is no need of providing a special drive apparatus therefor.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: February 22, 2000
    Assignee: Misuzu Co., Ltd.
    Inventor: Kenzo Suzuki
  • Patent number: 6017393
    Abstract: A system for pumping resist to a wafer coating machine includes a line that returns a selected proportion of the resist entering the resist pump to the resist supply tank. The return line to the tank is connected to the pump outlet at a higher point than the pump outlet to the wafer coating machine, and the resist that is returned to the tank carries substantially all of the bubbles that are carried in the resist entering the tank. The bubbles are removed from the resist in the tank and the resist can be used normally.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: January 25, 2000
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Jen Song Liu, Bii Junq Chang, Jen Shang Fang, Hao Wei Chang
  • Patent number: 6010570
    Abstract: Disclosed is an apparatus for forming a coating film for semiconductor processing, including a holder for holding a substrate, a coating solution supply device arranged to face one main surface of the substrate held by the holder and provided with a discharge port for supplying a coating solution onto the one main surface of the substrate, the coating solution forming a band-like stream having a width smaller than that of the substrate, a moving device for moving the coating solution supply device in parallel and relative to the substrate held by the holder to form a coating region and a non-coating region on the one main surface of the substrate, and a clearance retaining device for maintaining constant the distance between the discharge port of the coating solution supply device and the one main surface of the substrate.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: January 4, 2000
    Assignee: Tokyo Electron Limited
    Inventors: Kimio Motoda, Tetsu Kawasaki
  • Patent number: 6007629
    Abstract: A chemical supplied onto a substrate is contained in a chemical container. A chemical cooling unit keeps the chemical contained in the chemical container cooled to a proper temperature for storage. A chemical pressure-transferring portion causes the chemical to flow from the chemical container into a chemical introducing pipe. A chemical temperature controller portion changes the temperature of the chemical guided by the chemical introducing pipe to a proper temperature for application on a substrate. The chemical brought to the proper application temperature is guided to a chemical dispensing unit, which dispenses the chemical onto a substrate.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: December 28, 1999
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventors: Masami Ohtani, Tadashi Sasaki
  • Patent number: 5954878
    Abstract: A method of and an apparatus for coating a substrate with a polymer solution to produce a film of uniform thickness, includes mounting the substrate inside an enclosed housing and passing a control gas, which may be a solvent vapor-bearing gas into the housing through an inlet. The polymer solution is deposited onto the surface of the substrate in the housing and the substrate is then spun. The control gas and any solvent vapour and particulate contaminants suspended in the control gas are exhausted from the housing through an outlet and the solvent vapor concentration is controlled by controlling the temperature of the housing and the solvent from which the solvent vapor-bearing gas is produced. Instead the concentration can be controlled by mixing gases having different solvent concentrations. The humidity of the gas may also be controlled.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: September 21, 1999
    Assignee: Silicon Valley Group, Inc.
    Inventors: Robert P. Mandal, James C. Grambow, Ted C. Bettes, Donald R. Sauer, Emir Guegrer, Edmond R. Ward
  • Patent number: 5944897
    Abstract: An improved chip termination or application wheel for applying a layer of silver paste to the edge or end of a chip including a wheel that is defined by a broad circumferential surface, for contact with the chip, the surface containing an increased surface area for accepting a larger amount of termination paste for transfer to the edge of a chip.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: August 31, 1999
    Assignee: Chip Star, Inc.
    Inventor: Denver Braden
  • Patent number: 5935658
    Abstract: The invention relates to a process for application of an organic coating on a moving metallurgical product 7 from a bath of a liquid organic material 3 contained in a vat 2 and liable to comprise air bubbles, the transfer of said liquid organic material 3 onto the product being accomplished in a coating zone, characterized in that, in order to eliminate said air bubbles, there is created in at least one zone of the bath, located upstream from said coating zone, an ascending current in the liquid material so as to convey the air bubbles from the bath to the vicinity of its surface and cause their bursting. The invention also relates to an apparatus for the implementation of this process.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: August 10, 1999
    Assignee: Sollac
    Inventor: Denis Clerc
  • Patent number: 5935332
    Abstract: A plant for preparing and feeding a coating composition to a coating head for paper or the like includes a plurality of hoppers, each hopper being intended to receive and deliver one ingredient of the composition. The plant further includes a premixer tank which is fed by the hoppers and mixes and homogenizes the formed composition and a homogenizing tank, fed by the premixer tank, having a high-speed stirrer for shearing the composition. A buffer capacity is directly and continuously fed by the homogenizing tank and connected to the coating head, wherein the buffer capacity preferably has a volume and an attached level detector for determining when the composition in the buffer capacity is below a predetermined level. A set of controllers attached to the level detector control the delivery of components from the plurality of hoppers.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: August 10, 1999
    Assignee: Cellier Groupe S.A.
    Inventor: Jean-Paul Caucal
  • Patent number: 5925421
    Abstract: In processing an object by irradiating it with laser light, a laser irradiation chamber is evacuated to a pressure value suitable for the intended laser light processing and the laser light processing is performed with the pressure in the chamber kept constant at the above value. Further, electrodes are provided in the laser irradiation chamber, and the inside of the chamber is cleaned by introducing an etching gas into the chamber during or immediately before the laser light irradiation and rendering the etching gas active.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: July 20, 1999
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Naoto Kusumoto
  • Patent number: 5919309
    Abstract: A CRT panel developing apparatus includes a body; a panel fixing portion, which is placed in the upper portion of the body and is structured so as to ground the conduction layer of the panel; a developing gun, which sprays powder that has been coated with organic matter on to the panel fixed to the panel fixing portion; a supply line, which is a passageway for the powder and air to be supplied to the developing gun; an air supply apparatus and a powder supply apparatus which are connected to the supply line; a powder charging portion, which is formed on the supply line that charges the powder that passes through the supply line; a turbulent air line which supplies air to the powder charging portion; a power supply apparatus that supplies electrical power to the powder charging portion; an evaporation portion, where the organic matter evaporates; an evaporation air line which supplies air to the evaporation portion; an evaporated organic matter line, which connects the evaporation portion and the supply line;
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: July 6, 1999
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Young-kag Kim, Won-hee Lee, Bong-mo Jeong
  • Patent number: 5885652
    Abstract: The fiber-coating concentricity of a coated optical fiber is controlled by non-axisymmetrically heating the coating material in the sizing die with respect to the z-axis along which the fiber is drawn. By controlling the temperature profile and thus the viscosity profile of the coating material, the amount of coating material applied to each azimuthal position of the fiber is controlled as it exits the sizing die. The apparatus that provides the desired temperature profile can also be employed to control the coating diameter.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: March 23, 1999
    Assignee: Corning Incorporated
    Inventors: John S. Abbott, III, Douglas G. Neilson
  • Patent number: 5855676
    Abstract: Tubelining device and technique using a coating-applicator for slip-casting a fluent liner coating onto the internal surface of a tube.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: January 5, 1999
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Guo-Quan Lu, Jesus N. Calata
  • Patent number: 5814151
    Abstract: A photoresist spraying apparatus for coating a photoresist with pressure from a nitrogen gas includes a tank which has a photoresist holding portion and an air portion. A photoresist inflow conduit is connected to a sidewall of the tank to intake photoresist and a photoresist outflow conduit is connected to a bottom of the tank for discharging photoresist. A T-shaped gas conduit has a gas inlet, a gas outlet and a connecting portion therebetween for connecting to the tank. The flow of a gas from the gas inlet to the gas outlet lowers the air pressure inside the tank so that air and bubbles remaining inside the tank are discharged to the gas outlet via the connecting portion, while a photoresist flows into the tank via the photoresist inflow conduit. A valve, provided in the gas outlet of the gas conduit, opens and closes to fill and discharge photoresist in the tank according to the pressure inside the tank.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: September 29, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Gyu-myeung Lee, Ill-jin Jang
  • Patent number: 5800614
    Abstract: A device is disclosed for applying adhesive to platens of a textile screen printing machine as the platens move from the unload stage to the load stage. The device comprises a frame mountable to the screen printing machine so that it extends over the moving platens, at least one interconnectable housing carried by the frame. Each housing has an array of adhesive-depositing nozzles and adhesive-spreading air nozzles plus a drying nozzle. As a platen passes under the housings, a sensor initiates the array of adhesive nozzles to deposit columns of adhesive onto the platens. Then the air nozzles spread the columns of adhesive by blowing air onto the columns. Finally, the spread adhesive is dried by gas from the drying nozzle, preferably directing a single curtain of air under pressure onto the adhesive. The housings are modular so that the device can be used with larger platens by simply adding one or more housings.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: September 1, 1998
    Inventor: Paul William Foust
  • Patent number: 5753302
    Abstract: The present invention provides an acoustic dispenser for propelling objects toward a substrate, together with methods of use of the dispenser. The acoustic dispenser uses a source of acoustic vibration and a membrane for the application of acoustic vibration wherein the objects are propelled from the membrane to a substrate. The acoustic dispenser and the methods of the invention can be used with numerous types of objects. In some embodiments, the objects are particles in a dry powder, which can include, for example, a pharmaceutically active ingredient. In other embodiments, the objects are beads, which preferably have an average diameter of about 100 to about 300 microns. Additionally, the acoustic dispenser can be used with more than one type of object, for example, two types of objects such as beads and dry powder.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: May 19, 1998
    Assignee: David Sarnoff Research Center, Inc.
    Inventors: Hoi Cheong Steve Sun, Pabitra Datta, William Yat Chung Chiang, Howard Christopher Rivenburg, Bawa Singh, Dominic S. Rosati, James Regis Matey
  • Patent number: 5744171
    Abstract: System for producing a plurality of semiconductor device assemblies utilizing a grid array of conductive epoxy for connecting them to an electronic system. Conductive epoxy is screen printed in a desired pattern onto a printed wire board of the semiconductor device assembly. The conductive epoxy is B-staged by heating in an oven. The semiconductor device assembly is then placed onto a system printed circuit board wherein the B-staged conductive epoxy is further cured by heat and effectively makes mechanical and electrical connections between the semiconductor device assembly and the system printed circuit board.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: April 28, 1998
    Assignee: LSI Logic Corporation
    Inventor: Mark Schneider
  • Patent number: 5735955
    Abstract: An apparatus and method are disclosed for producing and dispersing herbicidal foam within a sewer line in such a manner as to apply the foam to either the entire interior surface or a specific or a plurality of specific areas within a generally cylindrical line.
    Type: Grant
    Filed: April 8, 1995
    Date of Patent: April 7, 1998
    Assignee: General Chemical Company
    Inventors: James D. Monaghan, Kenneth Line
  • Patent number: 5662969
    Abstract: A coating apparatus and method for applying a coating to a workpiece, comprising:a vessel to contain molten metal;an induction coil disposed about said vessel; and,temperature regulation means;wherein, in use, said induction coil induces a magnetic field within said vessel such that a meniscus of molten metal is formed above said vessel, through which said workpiece is passed for coating, whilst said temperature regulation means regulates temperature of said molten metal and/or controls the meniscus height of said meniscus.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: September 2, 1997
    Assignee: Graham Group
    Inventor: Ping Ling
  • Patent number: 5652022
    Abstract: An area of an insulating strip (3) which is to remain free of metal is covered by an endless cover strip (4), which rests on the insulating strip (3) and travels along with it at the same speed. Before it enters a vapor deposition zone (5), the cover strip is provided with a film of oil on the side facing the metal evaporator (6) and, after the cover strip (4) has passed through the vapor deposition zone (5) and after the cover strip (4) and the insulating strip (3) have been separated from each other, the oil which has been deposited from the vapor phase onto the cover strip (4) is removed by heating the cover strip (4) with a heater (7) installed in the immediate vicinity of the cover strip (4).
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: July 29, 1997
    Assignee: Balzers Und Leybold Deutschland Holding AG
    Inventors: Wolfgang Achtner, Thomas Vogt, Gunter Klemm, Detlef Eller
  • Patent number: 5562952
    Abstract: In a plasma-CVD method and apparatus, plasma is formed from a film material gas in a process chamber and, in the plasma, a film is deposited on a substrate disposed in the process chamber. Formation of the plasma from the material gas is performed by application of an rf-power prepared by effecting an amplitude modulation on a basic rf-power having a frequency in a range from 10 MHz to 200 MHz. A modulation frequency of the amplitude modulation is in a range from 1/1000 to 1/10 of the frequency of the basic rf-power. Alternatively, the rf-power is prepared by effecting on the basic rf-power a first amplitude modulation at a frequency in a range from 1/1000 to 1/10 of the frequency of the basic rf-power, and additionally effecting a second amplitude modulation on the modulated rf-power. A modulation frequency of the second amplitude modulation is in a range from 1/100 to 100 times the modulation frequency of the first amplitude modulation.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: October 8, 1996
    Assignee: Nissin Electric Co., Ltd.
    Inventors: Takahiro Nakahigashi, Hiroshi Murakami, Satoshi Otani, Takao Tabata, Hiroshi Maeda, Hiroya Kirimura, Hajime Kuwahara
  • Patent number: 5531831
    Abstract: A static blending device for continuously blending particulate matter for even dispersion onto a substrate, wherein blending can be achieved automatically by gravity flow of the material. The static blending device includes an inlet for receiving particulate matter and an outlet for dispensing particulate matter and a dispersing section provided between the inlet and the outlet that is divided into a first compartment and a second compartment. The first and second compartment are each preferably divided into a manifold cavity and a transfer section by a manifold plate with multiple manifold openings that is positioned on an angle within each compartment.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: July 2, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kenneth W. Sweeney, Harold G. Converse
  • Patent number: 5529629
    Abstract: An applicator system for applying color coating on a paper web is disclosed having a color coating applicator along with a backing roll around which is wrapped the paper web. A measuring system is incorporated for measuring a predetermined property of the color coating at several points along the width of the paper web. Predetermined qualities of the color coating include weight, thickness, or surface properties of the coated surface. A control means is included for controlling the color coating arriving at the application zone. The color coating is controlled by varying the temperature, or the consistency of the color coating in a zonewise fashion across the width of the paper web.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: June 25, 1996
    Assignee: J. M. Voith GmbH
    Inventor: Rudolf Beisswanger
  • Patent number: 5520739
    Abstract: An assembly for the deposition of aqueous coating compositions in printing processes including wet-trap in-line, off-line dry-trap, gravure, offset (using water and waterless), silk-screen, flexography and related printing processes. Use of the present invention results in the adaption of an aqueous coating to virtually any coating method without the need to change the chemical content of that formulation and in certain embodiments, produces unexpectedly high levels of solid being incorporated into printing coating compositions for obtaining levels of gloss on surfaces which have been heretofore unobtainable. In addition, the present invention is readily adaptable to virtually every type of coating process used to coat inked, uninked and related surfaces.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: May 28, 1996
    Inventor: Joseph Frazzitta
  • Patent number: 5487781
    Abstract: A mastic applicator system for delivering a mastic material to a surface in a precisely controlled manner. The system includes a mastic pump, a regulator receiving the mastic from the pump, a nozzle, and a jacketed hose assembly interconnecting the regulator output and the nozzle input. The hose assembly includes an end block having a flat sealing surface, and the end block and the body of the nozzle are fixedly secured together with the sealing surface on the end block in flush sealing contiguous relation to a flat sealing surface on the nozzle body so that a mastic passage and water passages in the end block may respectively sealingly communicate with a mastic passage and water passages in the nozzle body at the sealing surfaces. The mastic passage from the hose assembly to the nozzle outlet is thus totally internal and totally insulated so as to preclude the formation of cold plugs of mastic material during system shut down.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: January 30, 1996
    Assignee: Johnstone Pump Company
    Inventors: Thomas J. Brennan, Michael E. DeFillipi, Steven M. Gnyp, Gregory D. Kremer
  • Patent number: 5447565
    Abstract: Methods and apparatus for coating materials are provided. The apparatus includes a first member located above a rotating member and including a top opening and a bottom opening. A second member is located at least partly within the first member including a bottom opening and a closed top portion. A feeder for feeding the first material through the top opening of the first member is provided. A second feeder for feeding the second material.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: September 5, 1995
    Assignee: Wm. Wrigley Jr. Company
    Inventors: Joo H. Song, Donald J. Townsend
  • Patent number: 5421884
    Abstract: In a curtain pouring apparatus for coating circuit boards with a photopolymerizable lacquer, the improvement comprising a heatable roll disposed in a gutter heatable vat above a conveyor belt for the circuit boards and a heatable doctor blade is applied against the roll and infrared lamps are arranged parallel to the doctor blade.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: June 6, 1995
    Assignee: Hans Jurgen Schafer
    Inventor: Hans J. Schafer
  • Patent number: 5366527
    Abstract: A method and apparatus is provided for controlling the diameter of a coated optical waveguide fiber. The viscosity profile of the coating material is controlled by adjusting the temperature of a portion of the coating assembly based on a measurement of the diameter of the coated fiber. By controlling the viscosity profile of the coating material, the amount of coating applied to the fiber is controlled,, thereby determining the diameter of the coated fiber.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: November 22, 1994
    Assignee: Corning Incorporated
    Inventors: Lynn G. Amos, Paul A. Chludzinski, Heidi B. Leoni, Johnnie E. Watson, Richard R. Williams
  • Patent number: 5290359
    Abstract: A process for making a battery paste includes steps of forming an active material in an aqueous slurry, then dewatering the slurry to form a battery paste. In one described embodiment, a slurry containing one or more basic lead sulfates suitable for use as the active material in lead-acid battery electrodes is formed in a continuously stirred tank reactor (36). The slurry is withdrawn from the reactor (36) and fed to a belt press (67) which reduces the moisture content of the slurry to the desired level. Battery pastes produced according to the invention may be fed continuously to a paster (89) for mass production of positive and negative battery plates from grids (91).
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: March 1, 1994
    Assignee: Globe-Union Inc.
    Inventors: Matthew A. Coonen, Ralph A. Petersen, Conrad E. Weinlein
  • Patent number: 5284520
    Abstract: An electroless plating device which comprises an electroless plating tank for accommodating an electroless plating solution; a draft pipe provided in the electroless plating tank for blowing air into the electroless plating solution; and a shield plate having perforations provided between an object of plating and bubbles blown out from the draft pipe, a size of each of said perforations being of dimensions whereby the bubbles cannot pass through the perforations.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: February 8, 1994
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Atsushi Tanaka
  • Patent number: 5254166
    Abstract: A jet stripping apparatus includes two dual-nozzle assemblies (12) which, when in use, are disposed one on either side of an ascending, substantially vertical steel strip (10) which is to be partly stripped of a molten zinc or aluminium/zinc alloy coating (19). Each assembly comprises upper and lower elongate nozzles (13,14) extending transversely of the strip, a device to supply pressurized gas (15) to the nozzles for emergence therefrom as jet streams (20,21) directed towards the strip, and a reaction body (16) intermediate the nozzles defining a pressurized stabilizing zone (17) between itself and the strip. The lower jet streams are inclined downwardly at 5.degree. to the horizontal.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: October 19, 1993
    Assignee: John Lysaght (Australia) Limited
    Inventor: Cat V. Tu
  • Patent number: 5223037
    Abstract: A plant for the manufacture of feedthrough (through-hole plated) printed-circuit boards or multilayers which comprises four modules (1, 11, 16, 21) through which the objects (3) to be treated are passed in a horizontal continuous process. In the first module (1) the surfaces to be coated are conditioned in an alkaline aqueous solution. An oxidative pre-treatment of the surfaces to be coated takes place in the second module (11). In the third module (16) a coating of organic monomers is deposited on the surfaces to be coated. Finally, in the fourth module (21) the deposited monomers are polymerized to form an electrically conductive coating. The printed-circuit boards or multilayers (3) thus treated and made electrically conductive on the lateral surfaces of the drill-holes are then passed on for the metallization of the lateral surfaces of the drill-holes (FIG. 1).
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: June 29, 1993
    Assignee: Hans Hollmuller Maschinenbau GmbH & Co
    Inventors: Niko Kraiss, Rainer Haas, Werner Renz
  • Patent number: 5221350
    Abstract: A roll (30) of adhesive worked between two rollers (10, 12) of the gumming device is supplied by feed nozzles (34a, 34b) projecting fine streams of adhesive (35a, 35b) with monitored flow. In case of an increase in the measured viscosity of the adhesive or stopping of the machine on which the gumming device is used, a water-atomizing device (40) allows the viscosity to be reduced and prevents the adhesive from drying out. A dimension of the adhesive roll is monitored and controls regulation of the output of the adhesive-feeding nozzles. The gumming device thereby ensures proper gumming of a strip of paper (2).
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: June 22, 1993
    Assignee: Fabriques de Tabac Reunies, S.A.
    Inventors: Bernard Tallier, David Vuilleumier
  • Patent number: 5182840
    Abstract: An epoxy floor roller tool formed by spirally winding a continuous strip of carding cloth having wires protruding outwardly therefrom around a roller core tube. The carding cloth wires are made of a cadmium plated steel which allows the wires to remain rigid even though quite thin and densely packed, whereby when the roller tool is rolled against a wet epoxy material spread over a floor surface, the wires will break even very small, closely spaced air bubbles in the epoxy, allowing the air to be released so that the voids caused by the air bubbles will flow closed without cratering before the epoxy hardens.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: February 2, 1993
    Assignee: The Wooster Brush Company
    Inventors: William A. Jacobs, William P. Camp, Jr.
  • Patent number: 5123373
    Abstract: A system and method for uniformly coating one or more fibers (10) with particles of a material is described. The method uses a vibrator preferably an acoustic speaker (17b) in a housing (17c) to fluidize the particles (P.sub.1) in a chamber (17 or 30) to deposit them on spread fibers (10b). The fibers can be in the form of a tow of fibers. After the particles are coated on the fibers, the particles can be bonded to the fiber such as by using a heater (19). The resulting product has a uniform deposit of the particles and in the case of the tow of fibers can serve as a prepreg for laminate structures to be produced from the coated tow of fibers.
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: June 23, 1992
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Shridhar Iyer, Lawrence T. Drzal, Krishnamurthy Jayaraman
  • Patent number: 5092267
    Abstract: Apparatus for collecting and drying powder used for electrostatic coating of a workpiece has air injection means incorporated into the collection bin both to dry and also to homogenize powder recovered, just prior to withdrawal from the bin.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: March 3, 1992
    Assignee: S. L. Electrostatic Technology, Inc.
    Inventor: Bedrich Hajek
  • Patent number: 5089305
    Abstract: Disclosed is a coating apparatus for applying a resist or developing solution to a semiconductor wafer. This coating apparatus comprises a plurality of nozzles supplied with various resist from a resist source and each adapted to drip the different solution onto the wafer, a vessel in which the nozzles is kept on stand-by, while maintaining the liquids in a predetermined state in the vicinity of discharge port portions of the nozzles, when the nozzles need not be operated, and a nozzle operating mechanism for selecting one of the nozzles kept on stand-by in the vessel, and transporting the selected nozzle to the location of the wafer, whereby the resist is applied to the wafer by means of only the nozzle transported by the nozzle operating mechanism.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: February 18, 1992
    Assignees: Tokyo Electron Limited, Tel Kyushu Limited
    Inventors: Mitsuru Ushijima, Osamu Hirakawa, Masami Akimoto, Yoshio Kimura, Noriyuki Anai
  • Patent number: 4998502
    Abstract: An apparatus for tempering fluid glues in continuous operation has a heat transfer body made of a cuboid aluminum block (26) in which is integrated the glue channel (24, 25), and the broad-side surfaces of which are thermally linked to Peltier elements (28) for heating and cooling the glue to be tempered. The Peltier elements (28) are provided on their heat transfer surfaces opposite to the aluminum block (26) with heat conductive ribs (30) that can be charged with a flow of cooling and/or heating air through an air channel (44). Inside the glue channel (24, 25) are arranged baffle plates or ribs as static mixers (36) that ensure a thorough mixing and an even temperature within the flow of glue.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: March 12, 1991
    Inventor: Josef Schucker
  • Patent number: 4970399
    Abstract: UV-hardenable reaction resin compounds are irradiated in an applicator and immediately fed to an object that is to be covered. An initial, not activated reaction resin compound is irradiated after entering an input opening in a reactor having an irradiation space, a UV-radiation source and, optionally, a reflector. Immediately thereafter the activated compound is fed to an object to be coated or to an object to be surrounded, in an open casting mold or to a closed casting mold via the exit opening, optionally via a casting canal. The method and the apparatus are particularly well suited for covering semiconductor components and for encapsulating active and passive components as well as for cementing UV-impermeable fitting parts.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: November 13, 1990
    Assignee: Siemens Aktiengesellschaft
    Inventors: Reiner Habrich, Heiner Bayer
  • Patent number: 4961955
    Abstract: A solder paste applicator for applying solder to a selected area of a printed circuit board on which electronic components are mounted. The applicator includes a housing with a plate mounted in one end. The plate has a pattern of holes through it corresponding to the pattern of solder to be applied to the board. The housing has movable legs mounted to the outer surface for positioning the plate a distance from the surface of the board which corresponds to the thickness of the solder to be applied. The solder is held in a reservoir above the patterned plate. A piston is positioned in the housing and is pushed against the reservoir for dispensing the solder.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: October 9, 1990
    Assignee: ITT Corporation
    Inventor: Steven R. Goldberg
  • Patent number: 4905625
    Abstract: An apparatus for waxing skis, where the skiing person glides through the apparatus with his skis on, comprises transport rolls, a warm air unit for drying and pre-heating the skis, and a waxing unit with a wax roll, 4/5 to 9/10 thereof being immersed into a wax container. The wax in the container is heated by a heating plate extending under the bottom of the wax container and having underneath an insulating layer. The apparatus further comprises a scraping unit with spring mounted scraping knives. For improving the finish of the gliding surface of the skis there is mounted a driven brushing unit, arranged after the scraping knives viewed in the moving direction, and comprising a pair of brushes mounted in pivoted levers and being forced against at least one tension spring, which is fixed to said pivoted lever and at the other end to an adjustable support. The apparatus is coin operated.
    Type: Grant
    Filed: June 14, 1988
    Date of Patent: March 6, 1990
    Assignee: Wax Boy SA
    Inventor: Eberhard Funke
  • Patent number: 4903631
    Abstract: A system for soldering, leveling and cooling printed circuit panels including a preheater, a fluxer, and soldering, leveling and cooling stations. The cooperation of the soldering, leveling and cooling stations provides for efficient processing of printed circuit panels. The soldering station, which includes a solder immersion chamber through which the panels are conveyed, provides an oil coating on the solder to minimize formation of dross. Automatic replenishment of oil through use of suitable flux on the panels to be soldered provide continuous cleaning of the soldering system to permit extended operation. A cooling table transports the soldered panels on a cushion of air to prevent marring.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: February 27, 1990
    Assignee: Teledyne Industries, Inc.
    Inventor: Gilbert V. Morris
  • Patent number: 4898117
    Abstract: A tool employing a solder foot to deposit solder on a series of conductive surfaces as the tool moves. In one embodiment, non-wettable blade attached to the tool breaks the film. A pair of sensors coupled to a control circuit monitor the position of the solder foot and the position may be changed as a function of the operation to be performed, i.e. deposit, reflow, standby while tool is moved. In a second embodiment a discrete solder mass is extruded and deposited on a preheated pad. In a third embodiment, solder wire is delivered to an omnidirectional tool for deposition.
    Type: Grant
    Filed: April 15, 1988
    Date of Patent: February 6, 1990
    Assignee: International Business Machines Corporation
    Inventors: Peter G. Ledermann, Luu Thanh Nguyen
  • Patent number: 4869198
    Abstract: A machine for removing bubbles from coated flat substrates, namely PC boards. The machine includes one or more conveyors for transporting the boards into an enclosure and a vacuum platen positioned above the conveyor which, when lowered into contact with the conveyor encloses the board in a plenum. A pump withdraws air from the plenum to create a vacuum and remove any entrained or surface bubbles from the boards.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: September 26, 1989
    Assignee: Union Tool Corporation
    Inventor: Paul Quillen
  • Patent number: 4865888
    Abstract: An electroless copper plating process for producing fine patterned wiring boards is improved by supplying very fine oxygen-containing gas bubbles through a porous alkali-resistant resin gas dispersing tube. An electroless copper plating apparatus having such a gas dispersing tube is also provided.
    Type: Grant
    Filed: June 13, 1988
    Date of Patent: September 12, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Haruo Akahoshi, Kanji Murakami, Mineo Kawamoto, Akio Takokoro, Ritsuji Toba, Toyofusa Yoshimura
  • Patent number: 4856456
    Abstract: An apparatus and method achieves the submersiontype processing of silicon wafers in a manufacturing process for the fabrication of semiconductor devices therefrom. The silicon wafer is uniformly flooded with the process fluid in a manner which prevents impingement thereof during chemical processing, such as wet etching, cleaning, photoresist developing and the like. Upon flooding the silicon wafer, a gas pocket is formed between a portion of the lower surface of the wafer and an adjacent portion of vacuum chuck to which the wafer is mounted. The resulting gas pocket prevents accumulation of processed fluid therein to facilitate spin drying of the wafer.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: August 15, 1989
    Assignee: Machine Technology, Inc.
    Inventors: Gary Hillman, Richard H. Rubin, Bernard H. Paulfus
  • Patent number: 4850302
    Abstract: A method for the application of chilled particles such as polytetrafluoroethylene generally marketed under the trade mark "TEFLON.revreaction., graphite, molybdenum sulfide and boron nitride to a metal surface having crevices or pores therein. With the metal heated to expand the crevices or pores and the particles chilled to contract them, the particles will be locked into the pores when both the metal and the particles come to equilibrium temperature with the particles thereby expanding and the pores contracting. The method is directed to such an application of chilled particles to expanded pores in large metal objects such as for example, large rolls. The large object is rotated on its linear axis while maintained at the desired temperature and the particles are given an electrostatic charge and chilled prior to their application to the metal surface.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: July 25, 1989
    Assignee: Interlock Corporation
    Inventor: Reinhold Hoffman
  • Patent number: 4791004
    Abstract: A process for forming a multilayered coating film is disclosed, comprising forming a liquid film of a coating composition, increasing the viscosity of the liquid film, and laminating the liquid film having an increased viscosity onto a support or onto a coating film on a support. A multilayered coating film can thereby be formed easily and efficiently without involving interlaminar mixing between adjacent layers.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: December 13, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Fumiyuki Suzuki, Yoshiaki Tamura, Keisuke Shiba
  • Patent number: 4768464
    Abstract: An improved chemical vapor reaction system is described. The system is characterized by its light source which radiates ultraviolet light to a substrate to be processed. Before the light source, an obturating plate is placed so that the intensity of the light source is apparently reduced at the center position. With this light, the substrate is irradiated with light having uniform intensity over the surface of the substrate to be processed.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: September 6, 1988
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shigenori Hayashi, Naoki Hirose, Takashi Inujima, Kenji Ito
  • Patent number: 4761171
    Abstract: A gas distributor beam includes a plenum and distribution slot surrounded by a generally V-shaped cooling fluid chamber. The circulation of a suitable cooling fluid tends to maintain the plenum and distribution slot at a temperature below four hundred degrees Fahrenheit for the distribution of diborane gas to an upper surface of a heated glass ribbon. Carbon blocks are utilized to stabilize the glass temperature above nine hundred fifty degrees Fahrenheit for the proper deposition of boron on the surface of the glass. Insulation between the carbon blocks and the outer walls of the cooling fluid chamber minimize heat transfer and the shape of the cooling chamber minimizes the exposure of the glass to the lower temperatures of the cooling chamber.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: August 2, 1988
    Assignee: Libbey-Owens-Ford Co.
    Inventor: Eberhard R. Albach
  • Patent number: 4685419
    Abstract: A method and apparatus for powder surface treatment by turning the powder into a fluidized layer while passing gas made, at least partially, of a reactive gas, through the powder, to improve dispersion stability of powder pigments.Since the powder is turned into the fluidized layer by gas made, at least partially, of reactive gas, powder particles are put in close and uniform contact with the reactive gas, ensuring full surface treatment of the powder.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: August 11, 1987
    Assignee: Nippon Paint Company, Ltd.
    Inventor: Takashi Nakajima