With Inductor Support Patents (Class 219/676)
  • Patent number: 10907692
    Abstract: Provided is a boot mounting method for a constant velocity universal joint in which a boot end portion is mounted and fixed to a mating member made of metal. After the boot end portion is fitted over a receiving surface being a radially outer surface of the mating member, a high-frequency induction heating coil having a ring shape is fitted over the boot end portion. Only a top portion of the receiving surface of the mating member is heated by high-frequency induction through application of a high-frequency current to the high-frequency induction heating coil. With this action, a mounting surface being a radially inner surface of the boot end portion and the receiving surface being the radially outer surface of the mating member are integrally joined to each other.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: February 2, 2021
    Assignee: NTN CORPORATION
    Inventor: Mika Kohara
  • Patent number: 10892653
    Abstract: A system and method for simultaneous recharging of multiple electronic devices a large area surface includes a placement surface the electronic devices and an interior area beneath the placement surface. Multiple mobile recharging assemblies are disposed in the interior area, each one including having wheels and sensors. A charging device is situated atop each mobile recharging assembly. An obstacle sensor detects obstacles and a controller is operable to signal the motion assembly to avoid obstacles. A charge sensor detects a battery on the placement surface in need of a charge. When a battery in need of a charge is detected, the charging device (coil) is energized to recharge the located battery. Once the charge sensor is indicative of having located a respective electronic device in need of a charge, a control system energizes a next mobile charging assembly to move and find a battery in need of a charge.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: January 12, 2021
    Inventor: Eric Rolfe
  • Patent number: 10507602
    Abstract: A modular accelerated cure system, for which the modules are of a size and weight to each be easily portable by one person, may be configured to fit a variety of parts, e.g., carbon fiber reinforced plastic (CFRP) components, such as found in the manufacture of composite aerospace structures. The system may be used to accelerate the cure of materials that allow elevated temperature cures, e.g., sealants, primers, coatings, paints, adhesives, and protective coatings, by increasing the ambient temperature surrounding a part, or a portion of the part, within each module in a controlled manner. The system is modular in that a number of modules may be fitted together to operate in unison and also may be adapted to fit parts of a variety of contours, shapes, and sizes. Temperature within each module may be controlled using a heat controller that receives a temperature indication from each module.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: December 17, 2019
    Assignee: THE BOEING COMPANY
    Inventors: Joshua Paul Carlsen, Teresa Bennett, Timothy David Aquino, Eli Scott Fielden, Christopher Kovalenko, Ian Cox Matheson, Isabel Calderon Glasmann, Shane Rahrle, W. Taylor Peterson, Michael D. Ridges
  • Patent number: 10283996
    Abstract: Packaging is disclosed. The packaging may include a charging element to charge an electronic device contained within the packaging. The charging may be performed by inductive charging. The packaging may include a magnet to position and retain an item within the packaging. The packaging may include protective surfaces formed of microfiber to help protect an item contained therein. The microfiber may be debossed around its periphery to minimize interruption between the microfiber and an underlying surface to which it is applied.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: May 7, 2019
    Assignee: Apple Inc.
    Inventors: Kevin Scott Fetterman, Jonathan Berk, Daniel David Hershey, Alissa Anderson, Margaret Madigan Burke, Jack Wanderman, Brett Evans Krasniewicz, Peter Coxeter, Benjamin Arthur Stevenson, Matthew Phillip Casebolt, Felix Chung Fan Lam, Robert Michael Merritt, Mark Toki Niiro
  • Patent number: 10251222
    Abstract: A double-sided flat inductor assembly is provided for simultaneous induction heating of two separate workpieces positioned on opposing sides of the double-sided flat inductor assembly. A double-sided flat inductor extraction assembly is provided for rapid removal of the inductor assembly after completion of the simultaneous induction heating of the two separate workpieces eliminating a necessity of using flexible electrical cables and allowing improved performance of an induction system including increased reliability.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: April 2, 2019
    Assignee: Inductoheat, Inc.
    Inventors: John Aaron Goodwin, Valery I. Rudnev
  • Patent number: 9814103
    Abstract: In an induction heater, preheated, pressurized air is further heated in the heating cabinet and also drawn into the coil tube via a suction fan. The simultaneous pulling and pushing of the twice-heated air through the tube provides superior air flow to pick up more moisture from the can ends being dried. The tube ends rest on upwardly concave collars and are held in place by gravity, with a single screw acting as a stop above to prevent upward movement. Removal requires only removing the single screw at each end then lifting the tube straight up out of the cabinet, which is facilitated by providing a hinged cover on the cabinet.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: November 7, 2017
    Assignee: Nordson Corporation
    Inventors: Timothy E. Wilson, Howard Podolny, Raymond J. Baxter
  • Patent number: 9543781
    Abstract: An apparatus for inductively transmitting electrical energy from a stationary unit to a mobile unit which is located adjacent to the stationary unit. The apparatus has a coil and a flux guide unit for guiding a magnetic flux occurring during operation of the apparatus with at least one ferromagnetic body, which consists of a multiplicity of individual elements. The flux guide unit has the basic shape of a plate and is arranged on one side of the coil perpendicular to the winding axis thereof in such a way that it covers the cross-sectional area of the coil at least partially. The ferromagnetic body includes individual elements with anisotropic magnetic permeability and has, overall, anisotropic magnetic permeability.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: January 10, 2017
    Assignee: CONDUCTIX-WAMPFLER GMBH
    Inventors: Pascal Asselin, Andrew Green, Mathias Wechlin
  • Patent number: 9006623
    Abstract: A high-frequency induction hardening apparatus used for metal objects, including a heating coil holder (4) carrying a heating coil (40) for hardening a metal object (2), an eccentric rotor assemble housing a cam mechanism for allowing the heating coil to eccentrically rotate through the heating coil holder (4); and a pair of supporters (11), (12) for keeping the heating coil holder (4) in a desired position, the supporters (11), (12) limiting the movement of the heating coil holder (4) to a plane intersecting the axis (21) of the cam carried in an eccentric rotor mount (13).
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: April 14, 2015
    Assignee: Fuji Electronics Industry Co.
    Inventors: Takehiko Nagao, Noboru Tsukamoto
  • Publication number: 20140374411
    Abstract: The present invention relates to an induction cooking hob including at least one induction coil (20). The induction cooking hob comprises a housing (10) with at least one vertical wall (12, 14, 16) and a bottom panel (18). A top panel is provided for covering the top side of the housing (10). The induction coil (20) is connected or connectable to the at least one vertical wall (12, 14, 16) by at least one fixing element (22). A rigid conjunction is provided between the vertical wall (12, 14, 16) and at least one the fixing element (22). The induction coil (20) and the at least one fixing element (22) form a rigid body, so that the induction coil (20) is supported by the vertical wall (12, 14, 16). Further, the present invention relates to an induction coil (20) provided for said induction cooking hob.
    Type: Application
    Filed: January 25, 2013
    Publication date: December 25, 2014
    Inventors: Thomas Dehnert, Alwin Neukamm, Jurgen Leikam
  • Patent number: 8912472
    Abstract: An apparatus for hardening a spring having a helical or beehive shape. The apparatus has a rotation support system and an induction heating system. The rotation support system is designed to support the spring while the spring is heated by the induction heating system. The induction heating system has an induction coil system having a coil system. The coil system has a spaced region designed to receive the spring and to heat the spring while the spring is supported on the rotation support system.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: December 16, 2014
    Assignee: Barnes Group Inc.
    Inventors: Scott Kurylo, Mehieddine Rababeh
  • Patent number: 8907257
    Abstract: The present invention relates to a contactlessly chargeable heater. In one example, the contactlessly chargeable heater includes: an induction patch emitting magnetic field by means of current applied to an inner coil; and a heating body, receiving the magnetic field from the charging patch to perform a contactless charging operation, and including a conductive metal yarn for emitting heat via the power generated through the contactless charging operation. The conductive metal yarn is woven together using threads within the heating body.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: December 9, 2014
    Assignee: Korea Institute of Industrial Technology
    Inventor: Gi Soo Chung
  • Publication number: 20140299595
    Abstract: A system includes an induction heating assembly having an induction heating element. The system also includes a power supply configured to provide a current to the induction heating element for heating a workpiece. In addition, the system includes a temperature probe configured to provide a signal indicative of a temperature of the workpiece to the power supply. The induction heating assembly is configured to maintain the temperature probe in contact with the workpiece.
    Type: Application
    Filed: April 9, 2013
    Publication date: October 9, 2014
    Applicant: Illinois Tool Works Inc.
    Inventors: Alan Dale Sherrill, George Harold Baus
  • Patent number: 8853599
    Abstract: An induction heating cooking apparatus includes a magnetic flux-shielding plate 28 to restrain magnetic flux leakage from a heating coil 24 and define a cooling air trunk 33, through which cooling air from a fan 32 passes. An infrared sensor 26 for detecting infrared rays emitted from a cooking container 22 and a control circuit 27 for controlling an output of a heating coil 24 depending on an output from the infrared sensor 26 are accommodated within the same space with respect to the magnetic flux-shielding plate 28 to thereby enhance assemblage. Also, the infrared sensor 26 is mainly cooled by cooling air passing through a cooling air trunk 33 to thereby enhance the cooling efficiency of the infrared sensor 26 and conduct correct temperature detection.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: October 7, 2014
    Assignee: Panasonic Corporation
    Inventors: Takaaki Kusaka, Akira Kataoka, Kazunori Takechi
  • Publication number: 20140290833
    Abstract: The curing press for a tire blank comprises: a mould and inductors capable of heating the press by electromagnetic induction, each inductor comprising a core (36) comprising two feet (40) having respective undersides (60) which are flat and inclined in relation to one another.
    Type: Application
    Filed: October 18, 2012
    Publication date: October 2, 2014
    Inventors: Alain Rochette, Didier Valentin
  • Publication number: 20140231415
    Abstract: An induction heating system includes a power source and an induction head. The converter output is at a voltage that is not greater than the voltage applied to the coil. The induction head includes a housing that houses a conductive coil disposed to induce heat in a workpiece and the coil is wound to be tuned to the output power. The coil is wound in a stacked spiral pattern with at least two turns in each layer. A flux concentrator is disposed about the coil with a potting compound around the concentrator and coil. Spacers maintain a desired separation between the head and the workpiece. The coil is a tube carrying a coolant. The head includes a wear surface that prevents contact of the coil and the workpiece, and a thermal insulator between the coil and wear surface. A non-contact temperature sensor is mounted to the housing.
    Type: Application
    Filed: February 19, 2013
    Publication date: August 21, 2014
    Applicant: Illinois Tool Works Inc.
    Inventors: Paul D. Verhagen, Tiffany Anne Carter, Alan Dale Sherrill
  • Publication number: 20140151368
    Abstract: A method and apparatus are provided for pipe joint fusion-welding and other applications, in which a hinged clamshell inductor apparatus is wound from a single contiguous length of Litz wire cable with turns of each half of the clamshell apparatus configured so that their individual magnetic fields are additive to induce uniform longitudinal current flow providing uniform circumferential heating in a carbon steel susceptor tube inserted within pipe ends to be joined.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 5, 2014
    Applicant: AJAX TOCCO MAGNETHERMIC CORPORATION
    Inventor: William Adam Morrison
  • Publication number: 20140144904
    Abstract: An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece, even a large workpiece, can be readily and approximately uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated H1, H2 are established on a workpiece W so as to extend in one direction and the areas to be heated H1, H2 are induction-heated, the deformation amount on one edge of the areas to be heated H1, H2 is different from that on the other. This induction heating device includes: heating coils 451 facing a portion of the areas to be heated H1, H2 when the workpiece W is induction-heated; and a relative transfer means for transferring the workpiece W and the heating coils 451 along one direction in a relative manner, and the heating coils 451 are disposed so as to correspond to the areas to be heated H1, H2 during the heating period.
    Type: Application
    Filed: April 6, 2012
    Publication date: May 29, 2014
    Applicant: NETUREN CO., LTD.
    Inventors: Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi, Masaki Sagae, Tatsuya Ishii, Yoshitaka Misaka, Yasuharu Ogawa
  • Patent number: 8716636
    Abstract: An arrangement for induction hardening a part including a pair of separate inductors electrically isolated from each other and configured to substantially surround a part when brought into close juxtaposition with each other. The inductor sections are powered by respective secondary inductor loops brought into close juxtaposition with a primary inductor loop connected to an ac power source which induces an ac current in each inductor section.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: May 6, 2014
    Inventors: John C. Bollman, Richard J. Roth
  • Patent number: 8653783
    Abstract: A circuit switching element is provided that switches a step-up/step-down bidirectional chopper circuit, arranged between a DC bus and a power storage element, to a first chopper circuit or to a second chopper circuit, whose step-up and step-down characteristics are in a complementary relation. The first and second chopper circuits are used together at a time of charge and discharge. Accordingly, an AC motor drive device having mounted therein a power storage system is obtained, in which the power storage system can perform charge and discharge to and from the power storage element, regardless of a bus voltage and can increase energy use efficiency.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: February 18, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Manabu Ohashi, Kazuya Nakamura
  • Patent number: 8614409
    Abstract: An induction heating element includes a primary conductive portion and a secondary conductive portion. The primary conductive portion is connected to a power source, and conducts electric current from the power source to generate a magnetic field that inductively heats a portion of the workpiece. The secondary conductive portion is electrically insulated from the primary portion, and receives an induced electric current from the primary portion to affect the magnetic field generated by the primary portion.
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: December 24, 2013
    Assignee: Induction Tooling, Inc.
    Inventors: William I. Stuehr, John E. Gadus
  • Publication number: 20130327451
    Abstract: A method for heat treating a gear having gear teeth includes removably mounting the gear on a work-piece holder, moving one of either a magnet assembly or the work-piece holder to bring the gear and the magnet assembly into heating proximity, rotating the magnet assembly for a desired amount of time while said magnet assembly and gear are in heating proximity to each other to heat treat surfaces of the gear teeth, moving one of either the magnet assembly or the work-piece holder relative to the other to bring different surfaces of the gear into heating proximity with said magnet assembly, and repeating for each opposed pair of gear teeth surfaces until all said gear teeth surfaces are heat treated.
    Type: Application
    Filed: August 12, 2013
    Publication date: December 12, 2013
    Applicant: The Timken Company
    Inventors: Stephen Johnson, Xiaolan Ai, Stephen B. Fitch
  • Patent number: 8354624
    Abstract: The invention relates to a device for curing a plastic material, in particular a sealing compound and/or a filling compound for tolerance adjustment or gap filling, respectively, wherein the plastic material is at least partly inserted in a gap area between two components, and wherein at least one of the components is made of a fiber reinforced plastic material, in particular of a carbon fiber reinforced epoxy resin. According to the invention the device is provided with at least one electromagnetic inductor for a locally defined heating of the gap area and for curing the plastic material arranged in the gap area. Due to the electromagnetic inductor which might be a linear inductor or a circular inductor a contact-less and fast curing of the plastic material is possible.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: January 15, 2013
    Assignee: Airbus Operations GmbH
    Inventor: Rainer Schildt
  • Patent number: 8344299
    Abstract: A cylinder heater useful in fabricating sleeves for high pressure pump liners comprises a support rotatably supporting a hollow circular cylinder having a metallic powder layer contacting a portion of its inner surface. A vibration sensor indicates vibration of the cylinder, and at least one temperature sensor indicates at least one temperature of the cylinder. At least one circumferential induction heating coil around the cylinder is positionable via the support along the longitudinal axis of cylinder rotation. Longitudinal position and power output of at least one heating coil, and cylinder rotational speed, are adjusted by a controller communicating with the support, the vibration sensor, at least one temperature sensor, and at least one heating coil. Controlled heating of the cylinder and the metallic powder layer results in a stratified abrasion-resistant fused metallic layer on the cylinder's inner surface. The fused layer may be honed to make a liner sleeve.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: January 1, 2013
    Assignees: Novatech Holdings Corp.
    Inventors: Donald P. Lomax, Starr L. Pitzer, Jack W. Rogers, George H. Blume
  • Patent number: 8299407
    Abstract: Provided is a low cost and highly safe electromagnetic induction heating device capable of uniformly heating an object to be heated. A work coil (26) has a basic coil (28) located at the innermost position, a first coil (30) located at the intermediate position, and a second coil (32) located at the outermost position, the latter two coils being connected in series to the basic coil (28). The first coil (30) and the second coil (32) are connected in parallel to each other. A switching circuit (16) for supplying a high-frequency current is connected to the first coil 30, and a second switching circuit 18 for supplying a high-frequency current is connected to the second coil 32.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: October 30, 2012
    Assignees: Wakoh Denken Kabushiki Kaisha, Hoshizaki Denki Kabushiki Kaisha
    Inventors: Takakazu Hayashi, Sizunao Hattori
  • Publication number: 20110036833
    Abstract: Because it is possible to cool down a column member at a higher speed than natural cooling, throughput can be improved further. Especially, when the tubular body M42 and the column part M43 are made of different metals and the column part M43 is pressed into the tubular body M42, a distortion will occur in the column member M42 and M43 and the top board M41 fixed to the column member M42 and M43 due to the difference in thermal expansion coefficients between them, but the cooling paths P1 and P2 can absorb a distortion caused by the difference in thermal expansion coefficients of these metals. In particular, when the top board M41 is used as a mold for resin molding, it is possible to perform resin molding precisely because distortion caused by the difference in thermal expansion coefficients does not easily occur.
    Type: Application
    Filed: February 19, 2009
    Publication date: February 17, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mitsuo Maeda, Yasuo Matsumi
  • Publication number: 20100219183
    Abstract: A power providing system in which inductive power outlets are incorporated into a bounding surface of a workspace includes inductive power outlets having primary inductors connected to a power supply via a driver. The primary inductors may be inductively coupled to secondary inductors wired to an electric load to provide power thereto. The bounding surface may be a wall, floor, ceiling or the like. Various inductively enabled prefabricated materials are disclosed for incorporating into such bounding surfaces.
    Type: Application
    Filed: April 9, 2010
    Publication date: September 2, 2010
    Applicant: POWERMAT LTD.
    Inventors: Yossi Azancot, Amir Ben-Shalom, Oola Greenwald, Arik Rofe
  • Patent number: 7700896
    Abstract: An image heating member includes a first region having a Curie temperature higher than a preset temperature, and a second region having a Curie temperature lower than the Curie temperature of the first region. A width of the first region in a conveying direction of a recording material is equal to or larger than a width of the recording material of a maximum size to be fed. The second region is provided outside the first region.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: April 20, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koki Watanabe, Shouhei Takeda, Shinichiro Wakahara, Jiro Shirakata, Koji Takematsu, Koichiro Nishimura
  • Publication number: 20090297268
    Abstract: It is intended to allow an asphalt pavement to be peeled off efficiently with a relatively small amount of electric power without generating large vibration and noise, and handled in the form of a block. An electromagnetic induction coil 36 is positioned above an asphalt pavement 22 provided on a copper plate (12) to melt a lower surface of the asphalt pavement 22. Then, a wedge-shaped thermally-conductive peeling member 60 having a peeling layer formed on an upper surface thereof is inserted into a melted layer (74) of the lower surface of the asphalt pavement 22 to peel off the asphalt pavement 22 from the steel plate 12. This makes it possible to peel off the asphalt pavement 22 with a relatively small amount of electric power and handle the peeled asphalt pavement 22 in the form of a block.
    Type: Application
    Filed: March 28, 2007
    Publication date: December 3, 2009
    Applicant: Green Arm Co., Ltd.
    Inventors: Kenichi Harakawa, Hidetoshi Hayashida, Seiichi Takeuchi, Koutaro Tohyama, Shinsuke Wakabayashi
  • Publication number: 20090159591
    Abstract: A superheated steam generator, capable of generating superheated steam which exceeds 400° C. even if a litz wire is adopted as an induction heating coil, and capable of being used as a middle-sized or small-sized home-available apparatus, is provided. The invention provided a superheated steam generator in which induction heating elements 22 which generates heat by electromagnetic induction are housed in a heat-resistant container 21, a hose 24 which allows cooling water to pass therethrough is wound around an outer peripheral surface of the heat-resistant container, a water supply unit 4 for the cooling water is connected to one end of the hose, the other end of the hose is connected to a steam inlet 21A of the heat-resistant container, an induction heating coil 25 is mounted on an outer peripheral surface of the hose, a high-frequency power supply unit 3 is connected to the induction heating coil.
    Type: Application
    Filed: August 21, 2008
    Publication date: June 25, 2009
    Inventors: Hideo Tomita, Takeshi Maruyama, Shinzo Yoshimura
  • Publication number: 20090107991
    Abstract: An electric induction heating and melting system is provided for inducing heat in an electrically conductive material placed in a containment vessel by bringing a moveable one or more induction coils at least partially enclosed in a refractory material in close contact with the surface level of the melt in the vessel while supplying ac power to the one or more induction coils. The moveable one or more induction coils can be kept in close contact with the surface level of the melt as the height of the melt in the vessel changes.
    Type: Application
    Filed: October 29, 2008
    Publication date: April 30, 2009
    Inventor: John H. Mortimer
  • Publication number: 20090008384
    Abstract: A variable-size induction heating plate includes a plurality of windings (10a, 10b, 10c, 10?a, 10?b, 10?c) arranged in a cooking surface. The heating plate includes two sets (10, 10?) of a plurality of windings arranged side-by-side, each set (10, 10?) of windings being adapted in such a way as to form a heating plate, and control elements (12, 12?, 13) which are adapted in such a way as to control the operation of the sets (10, 10?) both in an independent manner and a synchronous manner. Each set of windings is fed by a single current generator (11, 11). The inventive heating plate can be used in an induction cooking surface.
    Type: Application
    Filed: December 22, 2006
    Publication date: January 8, 2009
    Applicant: Fagorbrandt SAS
    Inventor: Alain Roux
  • Patent number: 7473871
    Abstract: A heating apparatus that enables an abnormally high temperature detection section that detects, when a heating element heated by means of electromagnetic induction reaches an abnormally high temperature, this abnormally high temperature, to operate speedily and reliably irrespective of the material and temperature characteristic of the heating element in a low-cost and compact configuration. In this apparatus, thermostat 301 is disposed on the same side as exciting coil 231 with respect to heat generating belt 210 and between winding bundles of a conductor wire of exciting coil 231. This allows coil guide 234 to hold both thermostat 301 and exciting coil 231 and allows these wires and terminals to be concentrated on one location, thus making it possible to reduce the number of parts and assembling man-hours and configure the body of the apparatus in a low-cost and compact configuration.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: January 6, 2009
    Assignee: Panasonic Corporation
    Inventors: Noriyuki Tajima, Koichi Baba, Akihiro Yasuda, Keisuke Fujimoto, Shigemitsu Tani, Masayuki Isayama
  • Patent number: 7462804
    Abstract: In order to prevent non-sheet passing portion temperature rise occurred in a non-sheet passing area of an electromagnetic induction heating member 1, leakage of magnetic flux is reduced by setting a Curie temperature of the heating member 1 to be smaller than an acceptable upper limit temperature and setting a thickness of the heating member so that a thickness tk in a Curie temperature arrival area (P1?P2) is larger than a thickness tn in a Curie temperature non-arrival area P2 which is a conveyance area of a material to be heated having a minimum passing size.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: December 9, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jiro Shirakata, Shouhei Takeda, Koki Watanabe, Shinichiro Wakahara, Koji Takematsu, Koichiro Nishimura
  • Publication number: 20080277386
    Abstract: The induction coil unit (1) for heating a sleeve section (3) of a tool holder (5) holding the shaft (13) of a rotation tool in a receiver opening (11) in press fit comprises two coil units (21, 23), whose distance can be changed selectively through at least one slanted surface cam assembly (43). A magnetic flux concentrator assembly (33) with several concentrator elements (55) distributed in circumferential direction is associated with the coil unit (21) adjacent to the free end (15) of the sleeve section (3). The width of a pass through opening (57) defined by the concentrator elements (55) for the tool shaft (13) is also changeable through a control cam (69), to which the concentrator elements (55) are coupled through a slanted surface cam assembly (73). The two slanted surface cam assemblies (43, 73) are coupled amongst each other in a useful manner in order to simplify the operation of the unit (1).
    Type: Application
    Filed: April 3, 2006
    Publication date: November 13, 2008
    Applicant: FRANZ HAIMER MASCHINENBAU KG
    Inventor: Franz Haimer
  • Publication number: 20080173640
    Abstract: Heating apparatus, particularly for heating materials contained within drums or similar containers, has a metal base plate 12 with an induction heating coil 16 beneath the plate. The container 24 to be heated is placed on the base, and may be surrounded by a cylindrical jacket 28 with a further induction coil 34 in the jacket wall. On energising the coils, induction currents flow in the metal base plate (and in the jacket wall) to produce heat which is transmitted to the container and its contents. In another embodiment, the base plate may just receive heat energy from a jacket coil.
    Type: Application
    Filed: March 31, 2006
    Publication date: July 24, 2008
    Inventor: Mark William Newton
  • Patent number: 7388178
    Abstract: An induction heating system for the manufacturing of optical memory microstructure, wherein the thermal cycle allows the process web to be rapidly heated to the relaxation and re-flow temperature, followed by cooling to the optimum separation temperature in under 10 seconds total process time. The rapid response heating system of the present invention may be achieved through the use of one or rotating asymmetrical induction heating coils which are embedded in the platen(s) of the embossing device.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: June 17, 2008
    Assignee: Energy Conversion Devices, Inc.
    Inventor: Michael Hennessey
  • Patent number: 7355149
    Abstract: An electromagnetic induction coil unit for use with an electromagnetic induction heating-type image heating apparatus includes magnetic flux generation means comprising an exciting coil and a magnetic core; a core holder for holding the magnetic core; a coil holder for holding the exciting coil and the core holder holding the magnetic core; and a resin cured after being poured in a liquid state into a structure in which the exciting coil and the coil holder, and the magnetic fore and the core holder are incorporated so as to integrally mold the exciting coil, the magnetic core, the core holder, and the coil holder.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: April 8, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koki Watanabe
  • Patent number: 7253380
    Abstract: An apparatus (10) and method for preheating welds uses a centered induction plate (12) having preferably a plurality of induction coils (30, 32) to impart the generation of heat in the materials to be welded (14), being interactively controlled by at least a temperature sensor (90, 92) and power supply control loop (16) so that even preheating can be obtained for a selected length of time given the parameters of the weld desired.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: August 7, 2007
    Assignee: Holland LP
    Inventor: Richard Miller
  • Patent number: 7251446
    Abstract: To control a surface temperature of a heating element to be an appropriate fusing temperature, a fuser comprises a supporter having a core metal at least, a heating element supported by the supporter, a magnetic field generator for generating a magnetic field to render the heating element generate heat with induction heating, and a gap retainer disposed at the magnetic field generator, brought in contact with the supporter, for retaining a gap between the supporter and the magnetic field generator.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: July 31, 2007
    Assignee: Oki Data Corporation
    Inventor: Tatsuho Yoshida
  • Patent number: 7234500
    Abstract: A cutting device (10) for cutting a material (12) and providing a cut portion of the material (12). The device comprises a heating assembly comprising an electrical induction arrangement (32) for heating the cut portion of the material by induction heating.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: June 26, 2007
    Assignee: Relco U.K. Limited
    Inventors: David Gill, Mark Gill
  • Patent number: 7205512
    Abstract: An electrophotography fixing device has a heating roller and an induction heating device. In order to improve heat resistance, heat radiating performance and insulation performance and in order to appropriately uniformly heat the heating roller, in the induction heating device, induction heating coils wound onto a core are fixed by varnish mixed with mica, and the outside surfaces thereof are fixed by a heat resistant bundling band or a molded body of a heat resistant material, or coated with a heat resistant, insulating and thermal conductive sheet. Alternatively, the same sheets as the above described sheet are provided between the core and the coils and between the layers of the coils. In addition, the core is formed with a hole extending in axial directions or holes extending in directions perpendicular to the axial directions. Moreover, the coils are doubly insulated.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: April 17, 2007
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Osamu Takagi, Satoshi Kinouchi
  • Patent number: 7183526
    Abstract: A high frequency induction-heating device 3 of the apparatus 1 for heating work includes a pair of opposite work coils accommodated within the coil casings 17 and 19 respectively. The casings 17 and 19 can be displaced in a unit by a motor provided under the device. Thus, the distance between the pair of work coils, and the distance between the work (W) and each work coil can be adjusted. The apparatus includes a plurality of heating devices 3 to which high frequency power sources are provided respectively. The apparatus and method for heating of a work with the apparatus is capable of treating a plurality of works (W) continuously under controlled conditions on work coil shapes and positions depending on the size and/or the shape of the works (W).
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: February 27, 2007
    Assignee: Kabushiki Kaisya Yoshino Kosakujo
    Inventors: Koshiro Yoshino, Masahiro Yoshino, Yasuhiro Yoshino
  • Patent number: 7145116
    Abstract: An induction heating coil having little high-frequency loss and producing little hast is easily manufactured by covering a conductor with a first insulating material to form a wire, then bundling and twisting such wires to form a stranded wire, covering the outer surface of the stranded wire with a second insulating material to form a coil wire, winding the coil wire a certain number of turns into a coil portion having a certain shape. The end portion of the coil portion and a connecting portion are heated with Joule heat while applying pressure to the end portion at the same time, so that the first and second insulating materials are fused and pressure-bonded to the conductor. Thus a terminal portion for the external connection of the coil portion is fixed while keeping the electrical connection with the conductor. Accordingly, an induction heating coil of low cost and stable quality can be easily manufactured.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: December 5, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshihiro Keishima, Akira Kataoka, Katsuyuki Aihara, Nobuyoshi Makio, Kazuya Gotou
  • Patent number: 7145115
    Abstract: An apparatus for hardening cylindrical bearing locations on a shaft, in particular a crankshaft, in which transition radii to the adjacent shaft parts are of undercut design, is provided with a heating unit, which is connected to a power supply, and with an inductor. The inductor has two heating conductor arms, which are arranged at a distance from one another and each run in the peripheral direction of the bearing location that is to be hardened. Each of the two heating conductor arms is provided with an inner bearing-surface hardening branch and two outer radius hardening branches, the bearing-surface hardening branch in each case being mechanically connected to the radius hardening branches by current-carrying elements which bear the radius hardening branches. The mechanical connection is sufficiently elastic for the radius hardening branches to be displaceable relative to the bearing-surface hardening branch in the axial direction of the shaft that is to be hardened.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: December 5, 2006
    Assignee: Maschinenfabrik Alfing Kessler GmbH
    Inventors: Andreas Zahn, Ralph Gerbeth
  • Patent number: 7129450
    Abstract: A method and a device for manufacturing packages are provided. The method comprises providing a tubular first package part of a sheet of thermoplastic coated packaging material including at least one layer of an induction heatable material. The first package part has a sealed first joint between two mutually opposing edge sections of the sheet. The method further comprises joining together the first package part and a second package part by a second joint, the first and the second joint intersecting each other. The method further comprises arranging induction heating means including at least two conductors extending along each other, so that the conductors extend along the second joint and sealing the second joint by feeding an inducing current through the induction heating means. The inducing current is conducted by the conductors along the second joint in opposite directions in said at least two conductors.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: October 31, 2006
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Hakan Andersson
  • Patent number: 7126095
    Abstract: A frying arrangement includes a planar heating element (5) including a ferromagnetic material and constituting a frying surface. The arrangement includes at least two magnetic field generators (1, 2) each having two free ends, wherein the heating element is arranged in or close to a plane defined by the free ends. The magnetic field generators are controlled by a controller such that they are adapted to generate alternating magnetic fields in the planar heating element, wherein the magnetic fields are converted into heat in the heating element. The magnetic fields being such that the magnetic field through one of the free ends has an opposed direction as compared to the magnetic fields through the other free ends.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 24, 2006
    Assignee: Mtech Holding AB
    Inventor: Lennart Alfredeen
  • Patent number: 7115846
    Abstract: A shrinking arrangement for a tool holder is provided which retains a rotary tool with a press fit in a central accommodation opening. The arrangement includes an induction-heating arrangement for thermally expanding the tool holder in the region of the accommodating opening. The induction-heating arrangement includes an induction-coil unit which is guided on a vertical guide column such that it can be displaced with its coil axis vertical and which is connected, in particular via a flexible cable, to an induction-current generator which is fixed in relation to the column, and in that arranged on the induction-coil unit is a contact switch which can be actuated manually and by means of which the supply of induction current to the induction-coil unit can be switched on and off in a freely selectable manner at least for a limited period of time.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: October 3, 2006
    Assignee: Franz Haimer GmbH
    Inventors: Franz Haimer, Josef Haimer, Wolfgang Kügle
  • Patent number: 7105783
    Abstract: In a fixing device according to this invention, coils are formed on a coil bobbin having a predetermined shape at an induction heating portion including a plurality of coils. In order to minimize the temperature difference of a heating roller in the axial direction, the coil bobbin has a shape for holding the interval between the coils at a predetermined interval.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: September 12, 2006
    Assignees: Kabuhsiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Osamu Takagi, Kazuhiko Kikuchi, Akihiro Wasai
  • Patent number: 7087869
    Abstract: In a transverse induction heating apparatus in which a material to be rolled is heated by inductors to which electric power is supplied from an AC power source, iron core widths of the inductors in a plate width direction of the material to be rolled are smaller than plate width of the material to be rolled, they are disposed on a plate width center line of the material to be rolled, and when a current penetration depth is ?(m), specific resistance of the material to be rolled is ?(?-m), magnetic permeability of the material to be rolled is ?(H/m), heating frequency of the AC power source is f (Hz), and plate thickness of the material to be rolled is tw (m), the heating frequency of the AC power source is set so that ?={?/(?·f·?)}1/2 and (tw/?)<0.95.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: August 8, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Toshinobu Eguchi, Hideo Sakamoto, Norihiro Saijou
  • Patent number: 7038178
    Abstract: The image heating apparatus includes a heating member, a first coil unit having a first holder in which a first excitation coil is sealed, the first excitation coil being provided for generating a magnetic field to induce an eddy current in the heating member, and a second coil unit having a second holder in which a second excitation coil is sealed, the second excitation coil being provided for generating a magnetic field to induce an eddy current in the heating member. The image heating apparatus having such structure enables easy assembly work while being capable of conducting nonuniform heating.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: May 2, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hitoshi Suzuki