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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| RE43263 | Method for operating a frequency converter circuit A frequency converter circuit has at least two outputs that are respectively connected to a load, in particular an induction coil. A first output is operated at a first switching frequency and a second output is simultaneously operated at a second switching frequenc... | 03/27/2012 |
| 7795562 | Dual coil induction heating system A dual coil induction cooking system and method for heating ferrous and non-ferrous cooking vessels. The system includes a first resonant circuit for inducing a current in a ferrous metal cooking vessel at a first frequency and a second resonant circuit, wired in a ... | 09/14/2010 |
| 7777163 | Induction heating cooking apparatus An induction heating cooking apparatus includes a top plate on which a cooking pot is placed, a coil, an inverter board, a supporting bed, a board holder and elastic bodies. The coil induction-heats the cooking pot. The inverter board is mounted with components for ... | 08/17/2010 |
| 7589301 | Induction heating device having plural resonant circuits A heating circuit includes a first heating coil provided adjacent to an object to be heated. A first capacitor is provided in parallel to the first heating coil, the first capacitor being a resonant component. An inductor is coupled to the first heating coil and the... | 09/15/2009 |
| 7504607 | Method for operating a frequency converter circuit A frequency converter circuit has at least two outputs that are respectively connected to a load, in particular an induction coil. A first output is operated at a first switching frequency and a second output is simultaneously operated at a second switching frequenc... | 03/17/2009 |
| 7459659 | Induction heating circuit and winding method for heating coils A heating circuit for heating a conductive bowl includes a voltage source; a first heating coil provided between first and second nodes and being configured to heat the conductive bowl; a second heating coil provided between the second node and a third node and bein... | 12/02/2008 |
| 7423244 | Heating device for a planar heater with induction heating elements A heater for a hob or cooktop having a glass ceramic surface is disclosed, whereby a number of individual modules with induction coils are provided with converters and a converter control for each induction coil. The modules may be independently assembler and/or rep... | 09/09/2008 |
| 7390994 | Electric cooker having a composite heat source An electric cooker having a composite heat source includes an external case having an air inlet and an air outlet, a cooking plate mounted on an upper surface of the external case to be a top plate thereof, a heat generating unit mounted between the external case an... | 06/24/2008 |
| 7385162 | Heater unit and electric cooker equipped therewith A heater unit comprises: a hot wire heating unit; an induction heating unit provided adjacent to the hot wire heating unit and operated by induction heating; and connectors each for connecting the hot wire heating unit to the induction heating unit. A cooker compris... | 06/10/2008 |
| 7372007 | Medium voltage heater element An electrical heater bundle has heater elements, each including a metal tube, an electrical resistance coil within the tube, a conductor pin connected to the coil and protruding from an end of the tube, and an electrical insulation powder surrounding the coil within... | 05/13/2008 |
| 7355151 | Magnetic safety feature for cookware and cooking stoves Methods and devices for securing the bottom of an item of cookware to the burner of a stove top by use of magnetism. The magnet(s) may be permanent magnets or electromagnets. The cookware may comprise a permanent magnet disposed on or in the base of the cookware. Th... | 04/08/2008 |
| 7323667 | Curie temperature thermostat for a eddy current heating device and method The device and method are used for controlling eddy currents generated by an electro-magnetic heater having at least one magnetic field producing element. To control the heater, a source of heat is used to heat a Curie temperature material, located adjacent to the m... | 01/29/2008 |
| 7315011 | Magnetic heating device Magnetic heating device includes energy feeding elements, control unit and at least two magnetic field generators, where each magnetic field generator has two free ends. All free ends of the magnetic field generators define a plane and the control unit is adapted to... | 01/01/2008 |
| 7274008 | Induction hob with monobloc housing components An induction hob comprising a hotplate, beneath which at least one induction mechanism is situated in a housing. The housing comprises a base and lateral walls that project vertically and are connected to the hotplate. The walls delimit an inner chamber of their cor... | 09/25/2007 |
| 7262391 | Image heating apparatus having a heat generation member generating heat by magnetic flux and heating an image on a recording material A heating apparatus, for heating a material P to be heated by heat from a heat generation member which has a predetermined curie temperature characteristic and generates heat by magnetic flux produced by a magnetic flux generation device. The apparatus includes a di... | 08/28/2007 |
| 7230216 | Induction heating method and unit It is an object of the present invention to prevent temperature decrease in a border portion of each of heating coils and to enable to eliminate an influence given by the change in a load state. In order to attain this object, an induction heating unit according to ... | 06/12/2007 |
| 7202451 | Induction heating method and unit It is an object of the present invention to prevent temperature decrease in a border portion of each of heating coils and to enable to eliminate an influence given by the change in a load state. In order to attain this object, an induction heating unit 400 ac... | 04/10/2007 |
| 7157675 | Radio frequency identification controlled heatable objects A temperature controlled heatable object is provided in which a temperature sensor is connected to a Radio Frequency Identification (RFID) tag. The RFID tag is located within the handle of the object, and the temperature sensor is placed in contact with the object. ... | 01/02/2007 |
| 7126095 | Frying hob arrangement with induction heating 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 eleme... | 10/24/2006 |
| 7057144 | Induction heating device In an induction heating apparatus, in order to decrease the buoyancy exerted on an object to be heated which is made of a material having high electrical conductivity and low magnetic permeability, such as aluminum, an electrical conductor is provided between a heat... | 06/06/2006 |
| 7053345 | Heating apparatus with temperature detection system for identifying and notifying the user that the material to be heated is wound around the induction heating element A heating apparatus has a magnetic flux generator and a rotatable induction heating element for generating heat through electromagnetic induction by the action of magnetic flux generated by the magnetic flux generator, and heats a material to be heated by causing th... | 05/30/2006 |
| 7049563 | Induction cooker with heating coil and electrical conductor An electric conductor provided for decreasing a lifting force exerted on an object being heated has an aperture of a small diameter in the center thereof, which leaves a large surface area to enhance reduction of the lifting force. The electric conductor is also pro... | 05/23/2006 |
| 7041945 | Induction heater for cooking An induction-heating cooking device includes a light-transmissive cooking board on which a cooking container to be heated is to be placed; a heating coil for heating the cooking container; light emission means for emitting a light beam; and light-transmissive light ... | 05/09/2006 |
| 7038179 | Electric oven and method of controlling the same An electrical oven and method of controlling the same includes a heater heating unit to heat food using an electric heater; an induction heating unit to heat the food using a high-frequency current, and a control unit to drive the heater heating unit and the inducti... | 05/02/2006 |
| 7030345 | Image heating apparatus having a heat generation member generating heat by magnetic flux and heating an image on a recording material A heating apparatus, for heating a material P to be heated by heat from a heat generation member which has a predetermined curie temperature characteristic and generates heat by magnetic flux produced by a magnetic flux generation device. The apparatus includes a di... | 04/18/2006 |
| 7026587 | Composite cooking apparatus A composite cooking apparatus having a body, a heating unit, and an induction heating unit. The heating unit is positioned in the body to generate heat used to heat food. The induction heating unit is positioned adjacent to the heating unit to generate a magnetic fi... | 04/11/2006 |
| 7022952 | Dual coil induction heating system A dual coil induction cooking system and method for heating ferrous and non-ferrous cooking vessels. The system includes a first resonant circuit for inducing a current in a ferrous metal cooking vessel at a first frequency and a second resonant circuit, wired in a ... | 04/04/2006 |
| 7022951 | Induction heating work coil An induction heating device or work coil for heating electroconductive material to a desired temperature that can be used on a roll or cylinder of any diameter. The work coil has an open core of ferrite material shaped in a U. Wire is wound around the opposing legs ... | 04/04/2006 |
| 7015436 | Apparatus for the heat treatment of foodstuffs and feedstuffs, in particular for the production of bakery products An apparatus for the heat treatment of foodstuffs and feedstuffs, in particular for the production of bakery products, such as wafer products, has a continuously moving conveying device, a device for depositing the product on the conveying device, and a device for r... | 03/21/2006 |
| 7009159 | Induction heating apparatus having electrostatic shielding member An induction heating apparatus with high safety is provided in which leakage current is prevented from flowing to the human body and there is no possibility of an electric shock even when an electrostatic shielding member does not sufficiently perform its function. ... | 03/07/2006 |
| 6980470 | Magnetic storage element, recording method using the magnetic storage element The present invention provides a magnetic storage element capable of recording with a small amount of recording current without reducing a coercive force of the magnetic storage element employed in an MRAM and a recording method using the same. The magnetic storage ... | 12/27/2005 |
| 6969834 | Line type luminous device and induction heating cooker employing same A luminous device includes one or more line-shaped luminous units each including an elongated light guide, one or more light sources, and a reflective layer. The light guide has a generally flat luminous surface for emitting light and another surface disposed away f... | 11/29/2005 |
| 6956188 | Induction heating coil with integrated resonant capacitor and method of fabrication thereof, and induction heating system employing the same An induction heating coil with integrated resonant capacitor is provided, along with methods of fabrication thereof, and induction heating systems employing the same. The induction heating coil includes a cable having a first conductor and a second conductor separat... | 10/18/2005 |
| 6946629 | Induction heating type fixing device for an image forming apparatus and induction heating coil therefor An induction heating type fixing device for an electrophotographic image forming apparatus is disclosed. An inducting heating coil has a plurality of bobbins each having a particular diameter and assembled in a telescopic manner. A particular conductor is wound roun... | 09/20/2005 |
| 6906294 | Composite cooking apparatus and method of controlling the same A composite cooking apparatus, which may perform a heating operation using a plane heater and an induction heating operation using high frequency current together. A composite cooking apparatus of the present invention includes a plane heater and an induction heater... | 06/14/2005 |
| 6903314 | Work surface arrangement with a cooking cell A work plate arrangement (1) including a work plate (2) and a hot plate (3), the hot plate (3) being inserted in a recess (4) of the work plate (2). In order to provide a work plate arrangement (1) which also enables ... | 06/07/2005 |
| 6861629 | Induction furnace for heating a workpiece in an inert atmosphere or vacuum An induction furnace, according to one embodiment of the invention, includes an induction heating system and a chamber that comprises a quartz cylinder, a top cover for sealing the top end of the cylinder, and a bottom cover for sealing the bottom end of the cylinde... | 03/01/2005 |
| 6754565 | Device for implementing control or regulating functions and a method of controlling or regulating in a vehicle A device for implementing control or regulating functions in a motor vehicle having at least one control unit, at least one peripheral element, and at least one control module. The peripheral element is connected to the control unit and receives and/or sends signals... | 06/22/2004 |
| 6660981 | Induction cooking device with display An induction-heating cooking device includes: an insulating plate which is partially or entirely light-transmissive, and on which an object to be heated is placed; a heating coil provided under the insulating plate, for heating the object to be heated; a ... | 12/09/2003 |
| 6635855 | System for heating of bodies in general by induction, especially for cooking food A system is provided for heating by induction in a receptacle (17) of non-ferrous materials such as aluminum, PFTE, earthenware and others, of an insert (18) consisting of a thin body of ferromagnetic material, such as wire gauze, which is deeply embedded... | 10/21/2003 |
