Inductive Heating Patents (Class 219/600)
  • Patent number: 6841763
    Abstract: A heat induction workstation has a base, a housing, a working station, an electrical power supplier and a cooling device. The housing has two baffles to divide the inner space of the housing into a central chamber and two side chambers. The working station is mounted in the central chamber and has at least one induction heating device. The electrical power supplier and the cooling device are respectively received in the side chambers. The electrical power supplier is electrically connected to the working station to provide electrical power to the working station. The cooling device is connected to the electrical power supplier to reduce the temperature of the electrical power supplier while the electrical power supplier is in operation.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: January 11, 2005
    Assignee: KSP Technologies Corp.
    Inventor: Hua-Chang Pang
  • Patent number: 6822204
    Abstract: An RFID-based induction heating/vending system for quickly and efficiently heating, vending, and recollecting stadium seats (10) or other objects. The system includes a plurality of objects each including an induction-heatable body (22), a charging/vending station (12) for heating and vending the objects; a self-serve warming station (14) that may be used by consumers to reheat their objects; and a check-out station (16) that automatically collects objects from consumers after use.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: November 23, 2004
    Assignee: Thermal Solutions, Inc.
    Inventor: Brian L. Clothier
  • Patent number: 6783272
    Abstract: A disc tribometer for measuring tribological, mechanical and thermal phenomena including at least a first rotary support for receiving a test sample, a second rotary support for receiving a second test sample, means for measuring torque applied to each of the supports, and at least one induction coil positioned to heat one of the test samples.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: August 31, 2004
    Assignee: S.A.R.L. Tribolinks
    Inventors: Caroline Richard, Imad Sallit, Davy Dalmas
  • Publication number: 20040074900
    Abstract: A high-frequency induction heating power control method comprises: detecting the input current of an inverter circuit for rectifying the voltage of an AC power source to convert the rectified voltage into an AC voltage of a predetermined frequency; rectifying the detected current to determine an input current waveform; shaping the waveform to determine a reference waveform; determining the difference between the input current waveform and the reference waveform; and mixing the differential information and the current control output by a mix circuit to convert the mixed one into the drive output of a switching transistor of the inverter circuit.
    Type: Application
    Filed: June 19, 2003
    Publication date: April 22, 2004
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Haruo Suenaga, Kenji Yasui, Yoshiaki Ishio
  • Publication number: 20040069773
    Abstract: An induction heating system and method of using the same are described. The system includes a locator system that eccentrically positions the central axis of the internal central void of the work piece with respect to the central axis of the locator system. The locator system also includes a rotation system that allows the work piece to be eccentrically rotated during the heat-treating process. In this manner, the lobe and heel portions of a cammed surface are substantially equidistant from the internal surfaces of an inductor so as to ensure substantially uniform heating of the external surfaces of the work piece.
    Type: Application
    Filed: June 25, 2003
    Publication date: April 15, 2004
    Inventor: Michael R. Hammond
  • Patent number: 6698242
    Abstract: In the method according to the invention cold or unheated hardened glass and/or glass-ceramic parts are bonded together with a metallic ductile joining material, preferably silver, copper, aluminum or an alloy of those metals, to form a brittle article. The parts to be joined in an initial unheated state are placed with the metallic ductile joining material between them in a high frequency alternating field with frequencies preferably from 100 to 500 kHz. Then the joining material is inductively heated locally to melt it by means of the alternating field and the parts are pressed together to form a sufficiently strong bond between the parts.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: March 2, 2004
    Assignee: Schott Glas
    Inventors: Wolfram Beier, Ulrike Beer, Roland Schnabel, Evelin Weiss, Stefan Hubert, Patrik Schober, Rainer Liebald
  • Publication number: 20030209535
    Abstract: The induction coil (13) of an arrangement which heats a tool-holder (1) inductively for the purpose of changing a tool shank (11) retained with a press-fit therein has a winding (19), in the case of which the number of coil turns per unit of length in the direction of the coil axis and/or the number of coil turns per unit of surface area is smaller in an intermediate region located, in the direction of the coil axis, between two main winding regions (21, 23) than in the two main winding regions (21, 23) and/or the internal winding diameter is smaller in the two main winding regions (21, 23) than in the intermediate region and/or, at least in an axial sub-region of the induction coil (13), increases from the two main winding regions (21, 23) in the direction of the intermediate region.
    Type: Application
    Filed: November 22, 2002
    Publication date: November 13, 2003
    Inventors: Josef Haimer, Franz Haimer
  • Publication number: 20030192878
    Abstract: Gastight and vacuum-tight chamber intended to be used in a device for heating a product advancing inside the said chamber by electromagnetic induction, characterized in that it comprises a sheath made of an electrically insulating, gastight and vacuum-tight material, the inner faces of the said sheath being protected by a heat shield consisting of a matrix of tiles made of a thermally insulating material and of a plurality of tubes cooled by the flow of a fluid, the latter being trapped in the said matrix of tiles.
    Type: Application
    Filed: April 15, 2002
    Publication date: October 16, 2003
    Inventors: Marc Anderhuber, Jean-Philippe Chaignot, Claude Couffet, Jean Hellegouarc'h, Philippe Roehr, Rene Pierret, Patrick Hug, Jean-Camille Uring, Gerard Griffay, Alain Daubigny
  • Publication number: 20030063652
    Abstract: A disc tribometer for measuring tribological, mechanical and thermal phenomena including at least a first rotary support for receiving a test sample, a second rotary support for receiving a second test sample, means for measuring torque applied to each of the supports, and at least one induction coil positioned to heat one of the test samples.
    Type: Application
    Filed: April 4, 2002
    Publication date: April 3, 2003
    Inventors: Caroline Richard, Imad Sallit, Davy Dalmas
  • Patent number: 6207939
    Abstract: The device and the method are used to de-ice an elongated structural element having a closed contour. The device is formed of pairs of electrically conductive and insulated wires, preformed for winding, one next to the other, along and around the structural element following an helicoidal trajectory while embracing the contour of the structural element with a certain gap. The conductive wires have ends for receiving electromagnetic impulses, and opposite ends electrically connected together. The conductive wires are sized to withstand a current causing a repulsion force whose intensity is capable of breaking the ice or the frost on the structural element by the separation of the conductive wires from each other in response to the repulsion. The conductive wires have rigidity and elasticity properties such that they recover their shape around the structural element after the separation caused by the repulsion.
    Type: Grant
    Filed: April 6, 2000
    Date of Patent: March 27, 2001
    Assignee: Hydro-Quebec
    Inventors: Marc-Andre Allaire, Jean-Louis Laforte
  • Patent number: 6077417
    Abstract: A method and system for cleaning the silicon microlenses in an electron-beam microcolumn in situ. The microlenses individually are heated by passing a current through each microlens. The current is utilized to heat the microlens to at least two hundred degrees Centigrade to prevent contamination and occasionally to a temperature on the order of six to seven hundred degrees Centigrade to remove any builtup or potential contamination.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: June 20, 2000
    Assignee: Etec Systems, Inc.
    Inventors: Kim Y. Lee, T. H. Philip Chang, Ho-Seob Kim
  • Patent number: 5613505
    Abstract: An induction heating source is provided for use with an electrical smoking article. The induction heating source provides an alternating electromagnetic field which inductively heats a susceptor in thermal proximity with tobacco flavor medium to generate aerosols. A plurality of induction heaters are employed and/or the tobacco flavor medium is translated with respect to the induction heater or susceptor. The tobacco flavor medium can form an intimate structure with the susceptor and can take the form of a cylindrical cigarette or a web.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: March 25, 1997
    Assignee: Philip Morris Incorporated
    Inventors: John M. Campbell, Grier S. Fleischhauer, Charles T. Higgins, Robert L. Ripley, David E. Sharpe, Michael L. Watkins, Susan E. Wrenn
  • Patent number: 5571436
    Abstract: Apparatus and method for superplastic forming. The workpiece is held between a pair of dies that are electrically and thermally nonconductive, and is heated inductively by a coil embedded within the dies. The dies are formed of a material that is substantially transparent to inductive heating. A plurality of electrical conductors are embedded within the die. The electrical conductors are interconnected into one or more electrically conductive coils that surround the workpiece. The electrical conductors are used to produce a time varying magnetic field that is used to heat the workpiece. In one embodiment, the workpiece is a composite material that is susceptible to inductive heating. The composite material includes an electrically conductive material. The time varying magnetic field heats the electrical conductive material, thereby heating the workpiece. The die also includes a forming surface having a shape corresponding to a desired shape of the workpiece.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: November 5, 1996
    Assignee: The Boeing Company
    Inventors: Paul S. Gregg, Marc R. Matsen
  • Patent number: 5534091
    Abstract: The present invention related to a method for joining ceramic members and an insertion member to be employed in the joining method. In the present invention, ceramic members are heated by the induction heating in a state that a heating ceramic member having a conductivity larger than those of the ceramic members to be jointed is intervened between the ceramic members to be jointed. In this induction heating, the heating ceramic member having a larger conductivity is mainly heated and the temperature of the butting portion is raised up to a temperature needed to join the ceramic members. Upon joining the ceramic members, it is desirable to press the butting portion but is not necessarily needed. In the case without the pressing, it is desirable to form a layer of a joining agent on each of the butting surfaces of the heating insertion member beforehand.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: July 9, 1996
    Assignee: Daihen Corporation
    Inventors: Kouji Okuda, Tokumitsu Nishi, Hiroshi Takai, Hisakiyo Hoshino
  • Patent number: 5410132
    Abstract: Apparatus and method for superplastic forming. The workpiece is held between a pair of dies that are electrically and thermally nonconductive, and is heated inductively by a coil embedded within the dies.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: April 25, 1995
    Assignee: The Boeing Company
    Inventors: Paul S. Gregg, Marc R. Matsen
  • Patent number: 5354970
    Abstract: A hot dip batch coating pot for containing a coating material in a liquid state. The pot comprises a container portion having a horizontal bottom and vertical side walls, with the bottom and said side walls defining an interior volume for containing said coating material. At least one coreless induction furnace is mounted on a side wall of the container portion. The coreless induction furnace defines an interior volume in communication with the interior volume of the container portion for inductively heating the coating material. The coreless induction furnace is disposed at an angle to the vertical.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: October 11, 1994
    Assignee: Inductotherm Corp
    Inventor: Peter Knupfer