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| Number | Title | Issue Date |
| 7205513 | Induction heated fuser and fixing members A coated member includes a substrate and a coating layer over the substrate where the coating layer includes at least one of ferromagnetic and magnetic particles dispersed in a binder. The member, which is suitable for use in an electrostatographic printing process,... | 04/17/2007 |
| 7065315 | Fixing apparatus A fixing apparatus of one embodiment of the present invention has a heating member which is heated by induction heating, a pressing member which supplies a predetermined pressure to the heating member, and induction heating mechanisms which supply a predetermined ma... | 06/20/2006 |
| 7045749 | Apparatus for fixing toner on transferred material The present invention relates to a device including a body to be heated to which a magnetic field is supplied to generate heat and which heats a developer on a material to be recorded, a plurality of coil bodies which generate an induced heat in the body to be heate... | 05/16/2006 |
| 7038178 | Image heating apparatus of electromagnetic induction heating type 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... | 05/02/2006 |
| 7023312 | Integrated cooling duct for resin-encapsulated distribution transformer coils A dry-type, resin-encapsulated transformer coil that includes multiple layers formed from a length of conductive material, and multiple cooling ducts that are formed of thermoplastic material and spaced between the layers of conductive material. The thermoplastic ma... | 04/04/2006 |
| 6961991 | Method of making an inductor coil unit including steps of pouring resin between frames A method of manufacturing a coil unit includes the first step of disposing a coil between a first frame and a second frame, the second step of pouring liquid resin into between the first frame and the second frame with the coil disposed therebetween, and the third s... | 11/08/2005 |
| 6963056 | Induction heating of a workpiece An apparatus and process are provided for controlling the cross sectional temperature profile of a continuously moving workpiece with an induction coil assembly that provides for a combination of longitudinal and transverse magnetic flux field heating of the workpie... | 11/08/2005 |
| 6864419 | Electromagnetic shield for an induction heating coil An apparatus and process are provided for reducing the electromagnetic field intensity in selected regions for a field produced when ac current flows through one or more induction coils through which a workpiece moves for induction heating of the workpiece. The elec... | 03/08/2005 |
| 6696770 | Induction heating or melting power supply utilizing a tuning capacitor A rectifier/inverter power supply for use with induction heating or melting apparatus includes a tuning capacitor connected across the output of the rectifier and input of the inverter. The tuning capacitor forms a resonant circuit with an inductive load ... | 02/24/2004 |
| 6555801 | Induction heating coil, device and method of use The invention provides an improved induction heating coil, an induction heating device including the induction heating coil and a method for heating a workpiece with the induction heating device. The induction heating coil for heating a workpiece includes... | 04/29/2003 |
| 6373036 | Induction heating apparatus having plurality of coils An induction heating apparatus used as a fixing apparatus of a copying machine, a printer, and the like includes a first coil for generating a magnetic field to induce an eddy current in a heating member, a second coil for cancelling the magnetic field ge... | 04/16/2002 |
| 6263172 | Image heating apparatus with improved start of film driving The present invention relates to an image heating apparatus in which a driving member drives a film at a first speed when driving is started and then drives film at a second speed, and the first speed is lower than the second speed.... | 07/17/2001 |
| 6198083 | Method and apparatus for heat treating wires A process for heat treating steel wires in which the wires are passed through an induction furnace with induction coils connected in series to a common power supply. No more than one wire passes through any one of the induction coils. The wires are heated... | 03/06/2001 |
| 6144019 | Inductor for an induction cooking area An inductor module for disposition below a cooking area plate of an inductor cooking area is disclosed. The inductor module includes a plate-shaped substrate and at least two inductor coils including a first inductor coil and a second inductor coil formed... | 11/07/2000 |
| 6078781 | Fixing device using an induction heating unit A fixing device of the present invention includes a first roller that is made of a conductive material, and is rotated and driven; a second roller that is in contact with the first roller in the pressed state; and an induction heating unit that is arrange... | 06/20/2000 |
| 6049691 | Image heating apparatus An image heating apparatus has a heat generating element with an electroconductive portion; a magnetic flux generating unit for generating a magnetic flux, wherein the magnetic flux generated by the magnetic flux generating unit produces eddy current in t... | 04/11/2000 |
| 5970592 | Godet for heating a running synthetic thread A godet for heating an advancing synthetic filament yarn is provided, the godet comprising a plurality of stationary primary windings and, with respect thereto, a magnetically conductive, rotatably supported godet jacket. The godet jacket is coupled with ... | 10/26/1999 |
| 5951903 | Method and apparatus for joining metal pieces According to the invention, the rear end of a preceding metal piece and a front end of a succeeding metal piece are heated, pressed and joined prior to the finishing hot rolling. An alternating magnetic field running through the metal pieces in the thickn... | 09/14/1999 |
| 5925278 | Universal power supply for multiple loads The present invention provides a circuit for heating a heating element to a desired temperature and generating an output from a single common AC power source. First, the AC power is rectified. An inductor and a capacitor form an L section type filter for ... | 07/20/1999 |
| 5837976 | Strip heating coil apparatus with series power supplies An induction heating apparatus for heating continuous strip material. In a first embodiment, two coil sections each having a gap at one end for the strip material to pass edgewise into and out of the apparatus for heating wherein the coil sections are ada... | 11/17/1998 |
| 5822669 | Induction heat fusing device An induction heating device for printers, copiers and the like includes a magnetic coil assembly and a heated metal body that form a closed magnetic circuit. To compensate for the effects of heat radiation at the ends of the heated metal body, a greater a... | 10/13/1998 |
| 5821507 | Electric cooker using induction heater An electric cooker is provided, which can grill foods by heat rays from a metal heating member using induction heating and is hardly affected by drops from the foods. This electric cooker comprises a work coil wound in a substantially pipe-like shape for ... | 10/13/1998 |
| 5786575 | Wrap tool for magnetic field-responsive heat-fusible pipe couplings A wrap tool having first and second coil regions and flange regions for inducing oscillating magnetic fields to fuse a plastic coupling having heating elements to a substrate. The first and second coil regions are wrapped around a selected plastic couplin... | 07/28/1998 |
| 5752150 | Heating apparatus The induction-heating apparatus of this invention contains a conductive member, a power source, and a first and a second induction coil connected to the power source and adapted for causing the conductive member to generate an induced current, the first a... | 05/12/1998 |
| 5660754 | Induction load balancer for parallel heating of multiple parts The load balancer incorporates link coil circuits that inductively couple to induction heating coils, which are connected in parallel across a power source. A capacitor is electrically connected in the link coil circuit. By varying degree to which the lin... | 08/26/1997 |
| 5658482 | Induction cooker with reduced parasitic radiation An induction cooker comprises at least one cooking heater comprising an inductor, a generator delivering a AC current to supply the inductor and an element made of a non-magnetic, electrically conductive material to provide shielding against the disturban... | 08/19/1997 |
| 5495094 | Continuous strip material induction heating coil An induction heating coil apparatus for heating continuous strip material comprising at least a pair of generally rectangular full-turn coils arranged in parallel relation and separated from each other to permit continuous strip material to pass axially t... | 02/27/1996 |
| 5487795 | Method for heat treating an impact beam of automotive vehicle door and a system of the same A method and a system for heat treating an impact beam of an automotive vehicle door. Hot rolled steel sheets are prepared having a composition consisting essentially of 0.18% to 0.22% carbon; 1.0 to 1.5% manganese; 0.15 to 0.4% silicon; not more than 0.0... | 01/30/1996 |
| 5401939 | Electromagnetic induction heater with magnetic flux diffusing members An electromagnetic induction heater in which magnetic flux diffusing members are fixed to at least two ends of an iron core wrapped with an electric wire to form a coil, and a metal plate is connected to the magnetic flux diffusing members to heat a wide ... | 03/28/1995 |
| 5397877 | Device for the homogeneous inductive heating of metallic flat products on the move Device for the induction heating of flat metallic products on the move with the aid of electrical coils provided on magnetic armatures arranged on either side of the large faces of the product to be heated, which moves continuously between the said coils,... | 03/14/1995 |
| 5376774 | Low emission induction heating coil Solenoid coils are provided that produce relatively low irradiation of electromagnetic fields with intense fields internally thereof for purposes of heating a metallic element, preferably a ferromagnetic element having a Curie temperature selected for the... | 12/27/1994 |
| 5362945 | Godet for heating an advancing yarn A godet for heating an advancing yarn including a rotatably mounted godet casing of magnetically conductive material, a stationary primary winding, and a power supply for powering the primary winding at least about 300 Hz. The godet casing is formed of ir... | 11/08/1994 |
| 5250777 | Method and apparatus for variable phase induction heating and stirring In one embodiment, an induction furnace is disclosed having a crucible, first and second set of induction coils surrounding the crucible and master and slave inverters, whereas in another embodiment, related to a channel-type induction furnace, the lower ... | 10/05/1993 |
| 5237144 | Electromagnetic induction heater An induction coil is formed by winding an electrically conductive wire around an iron core, and at least one turn of a pipe of electrically conductive material is wound around the induction coil. The pipe is short-circuited at positions other than where t... | 08/17/1993 |
| 5157233 | Electromagnetic induction heater for heating a continuous thin sheet without undulation In an electromagnetic induction heater for use in heating a strip by electromagnetic induction between a pair of magnetic-pole elements, a plurality of guide rollers are arranged between the magnetic-pole elements to guide the strip. The strip may be guid... | 10/20/1992 |
| 5157231 | Apparatus for inductive hardening crankshafts with crank pins having a hollow ground radius A method for the inductive hardening of working surfaces and transition radii on crankshafts in which, to receive connecting rods, crank pins are disposed directly one after another at different angular attitudes in planes at right-angles to the axis of r... | 10/20/1992 |
| 5126522 | Induction heating apparatus for preventing the formation of stripes on plated steel An induction heating apparatus is disclosed which includes a high frequency power source having a leading phase angle setting circuit, which is supplied with a detection voltage signal from an output side of a high frequency inverter connected to a load c... | 06/30/1992 |
| 5059762 | Multiple zone induction heating Induction heating apparatus, e.g. for melting, has induction coil sections, each associated with a respective zone of the melt or other work load, the power applied to each section from a supply being controlled individually through a saturable reactor re... | 10/22/1991 |
| 5055647 | Electro-magnetic induction heating of strip material An electro-magnetic induction heater has a heating coil which defines a throat through which a metal strip (moving towards a plastics film laminating station) passes thereby to be heated to a laminating temperature. The coil turns are flexible, and are br... | 10/08/1991 |
| 5034586 | Induction heating assembly including an interposed closed conductive loop for suppression of intercoil coupling An induction strip heating assembly is provided having multiple induction coils disposed in coaxial tandem and including at least two coil power sources for generation of first and second inducing currents in the coils for the induction heating of a workp... | 07/23/1991 |
