Patents Examined by Steven E. Warner
  • Patent number: 4817299
    Abstract: Convection heat treating apparatus for thermal treatment of a traveling substrate that maintains the temperature of the treatment gas so as to eliminate formation of streaks in the substrate without overheating the interior walls of the machine. A pivotally mounted flow control means has integrally formed portions to simultaneously control the flow of treatment gas through an application chamber inlet, and adjacent branch opening which allows treatment gas to pass from a distribution chamber to return chamber for reheating and recirculation without passing through the application chamber and onto the fabric web, and a by-pass opening disposed radially outwardly from the branch opening which permits the treatment gas to pass directly to the circulation means without reheating.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: April 4, 1989
    Assignee: A. Monforts GmbH & Co.
    Inventor: Manfred Pabst
  • Patent number: 4818223
    Abstract: Apparatus for treating workpieces under the action of hot gases within a chamber in order to achieve as homogeneous a treatment or processing as possible are provided with a valve mechanism whereby the gas is made to flow alternately from one side to the other over objects or workpieces within the chamber, the valve mechanism being especially designed to operate with heated gases and serving to reverse the gas flow.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: April 4, 1989
    Assignee: Arthur Pfeiffer Vakuumtechnik Wetzlar GmbH
    Inventor: Gerhard Hild
  • Patent number: 4817300
    Abstract: An apparatus for uniformly subjecting a flow-traversable heatable material, in particular a stack of plates, rods, tubes, pipes, or the like, to a fluid flow comprises a radial-flow fan which serves as flow drive and which is disposed above the plane of flaps which depending on the desired flow direction can be respectively opened or closed. The radial-flow fan comprises a spiral housing discharging on at least two sides, and the volume flow emerging from the discharge openings of said spiral housing is supplied alternately from the one side or from the other side to the heatable material simply by actuating the flaps.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: April 4, 1989
    Assignee: Degussa Aktiengesellschaft
    Inventors: Carl Kramer, Reinhard Grundmann
  • Patent number: 4818262
    Abstract: Liquid oxygen and gaseous nitrogen are remixed in a roughly reversible manner in an auxiliary column (3); rich liquid without argon, withdrawn at an intermediate place of the auxiliary column is remixed in another auxiliary column section (4) with impure nitrogen of the top of a low pressure column (6), and the gas of the top of this auxiliary section constitutes a residual gas (R1) of the plant. Application in the production of argon.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: April 4, 1989
    Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation des Procedes Georges Claude
    Inventor: Jean-Renaud Brugerolle
  • Patent number: 4813380
    Abstract: Solids are separated from the flue gases of a fluidized bed reactor with a circulating bed and provided with cooling surfaces and are recycled to the reactor through return ducts disposed at different heights in the reactor. To control the operation of the reactor the heat removed from the reactor chamber is regulated by changing the suspension density in the reactor chamber. A required suspension density is obtained by regulating the flow of the solids through each return duct.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: March 21, 1989
    Assignee: A. Ahlstrom Corporation
    Inventor: Folke Engstrom
  • Patent number: 4811493
    Abstract: An improved dryer-cooler apparatus cures or dries a heat sensitive coating on a moving substrate in a manner to minimize problems related to heating. The apparatus comprises a cooling plate, an end block at each end of the cooling plate and a plurality of heating lamps extending between the end blocks, above a reflective face of the cooling plate. The cooling plate has a plurality of cooling passages which extend from the top to bottom ends thereof, and each end block has a plurality of lamp openings and has a plurality of coolant passage openings that each aligns with a coolant passage of the cooling plate. The ends of each heating lamp are supported in an unencumbered manner in the lamp openings of the end blocks. Thus, the heating lamps and the cooling plate and end blocks can expand and contract without damage when cyclically heated and cooled during periodic operation of the dryer-cooler apparatus.
    Type: Grant
    Filed: August 5, 1987
    Date of Patent: March 14, 1989
    Inventor: Joseph T. Burgio, Jr.
  • Patent number: 4811495
    Abstract: An improved laundry drier which includes an outer case as well as an inner case and a tub which is rotationally driven. There is provided a heating housing having heating elements contained therein. A blower is located beneath the heating elements in the heating housing. A first electromagnetic valve is located in a passage of a suction duct. A branch duct is formed into the passage and is in fluid communication with a suction end of the blower. A second electromagnetic valve is formed in the branch duct to control fluid communication between the passage of the suction duct and a spraying duct. There is provided a vacuum apparatus disposed therein. Hot air may be circulated through the spraying duct and finally through the blower and the heating elements in the heating housing during a drying process.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: March 14, 1989
    Inventors: Mijuel E. J. Huang, Suyueh Chao, Chin-Ching Yu, Chi-Chu Hsu
  • Patent number: 4811494
    Abstract: A solvent extraction process for the removal of water from carbonaceous solids utilizing methyl formate.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: March 14, 1989
    Inventor: Frank Miller
  • Patent number: 4811496
    Abstract: Method of correcting the track of an intermittently-running endless belt in a veneer dryer is disclosed. In a veneer dryer having a pair of intermittently movable endless belts provided under tension so as to form at least one straight passage therebetween through which a veneer sheet is conveyed by the endless belts while being heated by heating plates located above and below the passage, and means disposed adjacent to the opposite lateral edges of the endless belts and movable toward and away from said lateral edges for moving the belts laterally, the tension is released to loosen the belts after a predetermined number of stops of the endless belts and the belts are then moved at the edge thereof on the side corresponding to the direction in which they are displaced, by said means located adjacent to said edge, until an area of normal running track is reached by the belts.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: March 14, 1989
    Assignee: Meinan Machinery Works, Inc.
    Inventors: Noriyuki Honda, Yukio Abe, Makoto Isobe, Nobuhiro Nakata
  • Patent number: 4809445
    Abstract: In a device for stabilizing the run of a material web, which successively runs over two rolls, namely a delivering and a receiving roll, there is a box provided that extends between the delivering and the receiving roll across the width of the paper web. This box has a so-called guide wall that extends along the course of the material web, with an air gap remaining between the guide wall and the material web. Additionally provided on the box are means which create a vacuum in the air gap. In a device of this type, the guide wall is shaped in a way such that its spacing from the theoretical trajectory plane tangent to the two rolls is in the center area of the material web greater than it is in the araa of the material web edges. A device of this type serves to better stabilize the smooth running of the material web on its way between the rolls.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: March 7, 1989
    Assignee: J. M. Voith GmbH
    Inventors: Richard Meyer, Helmut Heinzmann, Wolfgang Muller
  • Patent number: 4809620
    Abstract: An apparatus for the combustion of a poorly combustible fuel in a fluidized bed comprises a vertical front wall through which the poorly combustible fuel is delivered in particulate form and two lateral walls extending rearwardly from the front wall. A fixed grate extends from a front input end towards a rear discharge end between the lateral walls, and the two sides and the front input end of the grate define spaces with the lateral walls and the front wall, respectively. The fixed grate is upwardly inclined over at least a portion of its length from the input end to the discharge end whereby the discharge end is disposed above the input end, and the particulate fuel is delivered to the input end for forming a fluidized bed on the grate.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: March 7, 1989
    Assignee: Fives-Cail Babcock
    Inventor: Paul Cosar
  • Patent number: 4809446
    Abstract: In a blower arrangement for blowing a gaseous treatment medium onto a longitudinally moving material web, nozzle plenums are arranged above and below the web and extend essentially perpedicularly to the transport direction of the web. Each nozzle plenum is divided lengthwise into two channels arranged one above the other by means of a horizontal partition wall. At one end of the nozzle plenum, both channels are simultaneously supplied with treatment medium flow, whereas at the other end, both channels are interconnected for flow between them. The lower channel including the blower nozzles is further divided by a diagonally extending vertical separation wall forming two complementary wedge-shaped tapering partial chambers which both simultaneously supply treatment medium to the blower nozzle or nozzles.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: March 7, 1989
    Assignee: Lindauer Dornier Gesellschaft mbH
    Inventor: Rudolf Langer
  • Patent number: 4809621
    Abstract: Refractory bricks, suspended wall of refractory bricks, and a method for mounting refractory bricks for protection of membrane boiler tube walls. The pre-fired brick has a rectangular generally flat exterior face, a top face having an upper groove extending across the top face generally parallel to the exterior face, a bottom face having a lower groove extending across the bottom face generally parallel to the exterior face, the upper groove being deeper than the lower groove, the upper and lower grooves sized and spaced to accommodate mounting bars attached to the membrane boiler tube wall.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: March 7, 1989
    Assignee: Merkle Engineers, Inc.
    Inventor: William R. Materna
  • Patent number: 4809624
    Abstract: A method for starting up a partial combustion process, using a burner, wherein finely divided carbon-containing fuel is supplied to a reactor or gasifier and an oxygen-containing gas is supplied separately from the said fuel to the reactor or gasifier and is mixed with the said fuel adjacent the outlet of the burner in the reactor or gasifier. During a predetermined period a low rank particulate carbon-containing fuel is supplied to the reactor prior to the start of the partial combustion process, said low rank fuel spontaneously reacting with oxygen when brought into contact with the said oxygen-containing gas and subsequently switching the burner to a less reactive finedly divided carbon-containing fuel.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: March 7, 1989
    Assignee: Shell Oil Company
    Inventor: Maarten J. Van Der Burgt
  • Patent number: 4805317
    Abstract: Porous desiccant material, such as silica gel, activated alumina, molecular sieves or mixtures thereof, is efficiently regenerated for reuse as a drying agent by irradiating a bed of the desiccant material with microwave energy preferably having a frequency of from 2400 MHz to 2500 MHz or from 900 to 915 MHz to heat and substantially affect only moisture adsorbed by the material and to vaporize the moisture in consequence of the heating of the moisture, the vaporized moisture being purged out of the bed with a forced draft of scavenging air while the bed undergoes irradiation by the microwave energy, and the resulting mixture of scavenging air and vapor being disposed of by discharging the mixture to an effluent receiving region isolated from the bed.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: February 21, 1989
    Assignee: Airflow Company
    Inventors: Robert S. Inglis, Owen Thomas
  • Patent number: 4805414
    Abstract: A process to recover higher boiling synthesis gas component substantially free of hydrogen comprising partial condensation of a synthesis gas reaction stream, defined stripping of hydrogen out of the resulting liquid, and fractional distillation of the resulting fluid.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: February 21, 1989
    Assignee: Union Carbide Corporation
    Inventor: Theodore F. Fisher
  • Patent number: 4805522
    Abstract: A hollow cross member structure for an automobile having a cross member which is disposed laterally across the automobile so as to form a part of the dashboard of the automobile and to define a part of an air duct structure for air conditioning the passenger compartment of the automobile. This cross member structure can define an advantageous air duct structure and effectively reinforce the automobile body structure at the same time by comprising a bulkhead in a substantially laterally central position of the cross member so as to divide the interior of the cross member into a first chamber for fresh air to be air conditioned and a second chamber for fresh air to be directly introduced into a passenger compartment, with the two chambers provided with individual air inlets and outlets.
    Type: Grant
    Filed: May 25, 1988
    Date of Patent: February 21, 1989
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Nobuyuki Tonoe, Hirokazu Yoshikawa
  • Patent number: 4803933
    Abstract: A refractory brick includes at least one insulation insert located on the cold face of the brick. Heat reflective means is provided on the surface of the insert disposed parallel to the cold face of the brick to reduce the amount of heat radiated through the insert.
    Type: Grant
    Filed: October 30, 1984
    Date of Patent: February 14, 1989
    Assignee: Dresser Industries, Inc.
    Inventors: Loucius Carey, Jr., Leigh F. Brooks
  • Patent number: 4802287
    Abstract: A dual purpose hand and hair dryer, and a cabinet for mounting the hair dryer on a wall for use as a hand dryer. The cabinet has a swing-down front part which receives the hair dryer and which has electric circuitry for operating the hair dryer including a light-sensitive switch and a timer.
    Type: Grant
    Filed: September 16, 1987
    Date of Patent: February 7, 1989
    Assignee: Tatung-Conair Corporation
    Inventor: Shye L. Chen
  • Patent number: 4800825
    Abstract: In the operation of a slagging combustor, including an apertured baffle defining part of a cylindrical combustion chamber having a head end which includes a nozzle for injection of sulfur-containing particulate carbonaceous material to be combusted in a whirling oxidant flow field, there is injected a particulate sulfur sorbent at the aperture of the baffle towards the nozzle to react with released sulfur. The sulfur sorbent is injected into the combustion zone from a location near the exit end thereof. Fuel is injected near the center of the head end. A relatively fuel-rich recirculation zone is established and maintained along the longitudinal axis of the combustion chamber surrounded by a relatively oxygen-rich annular region.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: January 31, 1989
    Assignee: TRW Inc.
    Inventor: John D. Kuenzly