Bizarre Patents
A simulation environment for the sport of boxing utilizing a robotic machine interface system which carries a person.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7361870 | Supply generator for an oscillating circuit, particularly for an induction cooking hob A supply generator for an oscillating circuit, includes an inductance (L) and a resonant capacitor (C3, C4), for operation at a fixed frequency and also includes at least one pair of transistors (I2, I2), operated on a var... | 04/22/2008 |
| 7355150 | Food preparation system with inductive power A food preparation system includes a non-contact power supply for energizing a cooking appliance. The food preparation system includes a communication system for enabling communication between a food appliance and the system. The appliance transmits an identifier to... | 04/08/2008 |
| 7265887 | Two axis low inertia torsional hinged optical device A low inertia two axis torsional hinged device formed from a single piece of silicon. The two axis torsional hinged device uses a pair of diametrally charged permanent drive magnets to pivot a gimbals member of the assembly about first and second torsional hinges al... | 09/04/2007 |
| 7208921 | DC-DC regulator with switching frequency responsive to load A switch mode power supply in which the switching frequency is controlled by an oscillator having a nominal frequency, and having an error amplifier to provide an output signal which represents departure of the power supply output from a nominal value, and which fun... | 04/24/2007 |
| 7206209 | Switching power supply apparatus with error amplification control A switching power source device can enhance the power factor by increasing the conduction angle of an input current in a wide input voltage range, while obviating the increase of size and the increase of cost thereof, and lower the switching loss by removing higher ... | 04/17/2007 |
| 7151242 | Induction heating system and method An excitation system for heating food, water, or both in airplanes uses induction heating. The system includes at least one load circuit including an inductor that is excited with a load circuit AC voltage, a load circuit alternating current, or both the load circui... | 12/19/2006 |
| 7105784 | Fixing device In a fixing device according to this invention, a coil bobbin around which coils are formed into a predetermined shape is formed at an induction heating portion including a plurality of coils. To minimize the axial temperature difference of a heating roller, the coi... | 09/12/2006 |
| 7072196 | Multi-stage high voltage solid state switch A method for triggering a high voltage solid state switch comprised of a set of thyristors connected in series. Initiating switch turn-on requires command triggering of only the lowest voltage thyristor, thereby eliminating the need for expensive high voltage pulse ... | 07/04/2006 |
| 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 |
| 7049564 | Induction heating device The present invention offers an induction heating apparatus in which the infrared sensor performs stable temperature detection without undergoing the influence of leakage magnetic flux from the induction heating means. This induction heating apparatus has a main fra... | 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 |
| 7034263 | Apparatus and method for inductive heating A system and method for inductive heating, in which a power source provides current pulses with high-frequency harmonics to a heater coil, the coil generating a magnetic flux for inductive heating of an article. The high-frequency harmonics enhance a relative propor... | 04/25/2006 |
| 7016744 | Man-machine interface A man-machine interface is provided for a domestic appliance in which remotely sensed buttons, slider bars, marker pucks and a knob are used. The sensing coils for remotely sensing the positions of the buttons, slider bars, marker pucks and the knob are formed on a ... | 03/21/2006 |
| 6936799 | Induction heating cooker and method for operating the same An induction heating cooker capable of accurately discriminating whether the material of a cooking container placed in the induction heating cooker is magnetic or non-magnetic, using a phase change in a resonant capacitor voltage of an inverter circuit and a switchi... | 08/30/2005 |
| 6927546 | Load control system and method A load control systems and methods. One embodiment of a load control system comprises at least two triac devices connected in parallel to a load, the at least two triac devices operable to deliver current to the load. At least one driver circuit is linked to the at ... | 08/09/2005 |
| 6919694 | Fixed operating frequency inverter for cold cathode fluorescent lamp having strike frequency adjusted by voltage to current phase relationship A method of driving a lamp that uses a DC to AC inverter that is connected to a primary winding of a transformer is disclosed. The inverter frequency is variable, and in one embodiment, may be controlled by a voltage controlled oscillator. Circuitry is included that... | 07/19/2005 |
| 6727482 | Apparatus and method for inductive heating An induction heating method and device comprise an inductive heat source (120) having a controller (130), a resonant converter (125) and an induction coil (80). The controller (130) generates a variable frequency variable duty cycl... | 04/27/2004 |
| 6498326 | Arrangement for the control of electrically controllable appliances, particularly electric cookers An arrangement for controlling electrically controllable appliances, such as electric cookers, has at least one manually operable control element placed on an outside of a plate, e.g. a glass ceramic plate of an electric cooker, which is secured by a magn... | 12/24/2002 |
| 6028297 | Rice cooker A rice cooker does not cause malfunction if the operation unit is touched by mistake when closing the lid, and is capable of preventing boil-over without lowering the rice cooking performance. The rice cooker includes a main body, a lid for covering the t... | 02/22/2000 |
| 6018154 | High-frequency inverter and induction cooking device using the same A high-frequency inverter having a simple circuit construction capable of executing a constant-frequency operation and a zero-volt switching operation and an induction heating cooker using the high-frequency inverter are disclosed. The high-frequency inve... | 01/25/2000 |
| 5920131 | Arrangement for the control of electrically controllable appliances An arrangement for the control of electrically controllable appliances, particularly electric cookers proposes for each cooking point an operating element magnetically held in contactless manner on the top or front of a plate, e.g. a glass ceramic plate. ... | 07/06/1999 |
| 5914066 | Circuit for the control of energy supply in a resonance converter Circuits for high frequency energy supply for cooking pots, etc. utilize resonant circuits in which the coil for the energy transfer forms a part. Furthermore circuits of the inverter type are used. It has turned out to be advantageous to use an extra cir... | 06/22/1999 |
| 5847369 | Induction cooking cartridge for use with bi-metal switches A delay timer incorporated into an induction cooking cartridge permits the use of the induction cooking cartridge with conventional modular cooktops including bi-metal power switches without damage to the induction circuitry.... | 12/08/1998 |
| 5665263 | Temperature-protected inductor-based cooking heater An induction cooking heater includes at least one inductor, a high-frequency current generator and a magnetic circuit located beneath the inductor. The reluctance of the magnetic circuit is calibrated so that the magnetic circuit gets saturated from a pre... | 09/09/1997 |
| 5643485 | Cooking utensil with improved heat retention A cooking utensil with improved heat retention includes an inner pot received within an outer pot and separated in a closely spaced-apart relationship to form a volume or chamber therebetween. The chamber is evacuated and sealed with foil leaves at the up... | 07/01/1997 |
| 5622643 | Process and device for controlling power for a circuit for induction cooking including a resonant invertor This invention relates to a process and a device for controlling power for a circuit comprising a resonant inverter intended to supply a variable impedance load comprising an inductive component. The invention renders the active power consumed by the load... | 04/22/1997 |
| 5571438 | Induction heating cooker operated at a constant oscillation frequency In a switching device of an induction heating cooker, an oppositely poled diode for conducting a reverse current is coupled across the collector-emitter portion of a switching element provided in the first switching device, and turn-ON operation of the sw... | 11/05/1996 |
| 5536920 | Inverter power control circuit for high-frequency heating apparatus An inverter power control circuit for a high-frequency heating apparatus of a half-bridge type which comprises an inverter. The inverter power control circuit comprises a first current transformer for detecting a current flowing through a first free-wheel... | 07/16/1996 |
| 5490450 | Inverter cooker with a high voltage/low voltage separating device An inverter cooker with a high voltage/low voltage separating device, which can protect the user from accident and prevents the inverter cooker from malfunctioning by separating a low voltage circuit portion from high voltage circuit portion regardless of... | 02/13/1996 |
| 5319174 | Induction heating cooker with constant frequency controlled inverter An induction heating cooker has a rectifier (13) for producing pulsating DC current, an inverter (14) which receives the pulsating current given from the rectifier (13) and produces a high frequency output current and a load circuit (15) including an outp... | 06/07/1994 |
| 5026955 | Drive control method for an electromagnetic induction heating apparatus A method for controlling the drive of an electromagnetic induction heating apparatus jointly utilizing a time control method and a linear control method. The method includes the steps of storing pulse signals and reset pulse signals in addresses of a memo... | 06/25/1991 |
| 4908489 | Induction heating driver circuit The present invention is an improved induction heating apparatus and more particularly a improved oscillation control circuit. The induction heating apparatus includes at least one induction coil, with a parallel capacitance forming an LC oscillation circ... | 03/13/1990 |
| 4900884 | Composite cooking system having microwave heating and induction heating An inverter rectifies an AC input to produce a DC output and switches the DC output so as to selectively obtain a high-frequency output for microwave or induction heating. A microwave heating unit is coupled to the inverter, receives the high-frequency ou... | 02/13/1990 |
| 4687896 | 100 Volt/220 volt compatible electromagnetic induction heating cooker An electromagnetic induction heating cooker compatible with both 100 V and 220 V inputs. A parallel circuit of a 100 V select switch and a transistor is connected between an output terminal of a bridge diode and a choke coil. The output terminals of the b... | 08/18/1987 |
| 4646935 | Induction cooking utensils A cooking utensil for use with an induction range has a first layer including a magnetic metal which is capable of being inductively heated, and a second layer which includes a ply of aluminum and a ply of copper, this second layer being in intimate therm... | 03/03/1987 |
| 4617442 | Induction heating apparatus with controlled switching device for improved efficiency An induction heating apparatus includes an inverter (5) which is driven by a DC power supply (3), and the inverter (5) includes a heating coil (9) and a switching transistor (11) which is connected thereto in series. The switching transistor (11) is turne... | 10/14/1986 |
| 4578553 | Multi-unit induction heat cooking apparatus having a common noise rejection filter A multi-unit induction heating apparatus for cooking applications comprises a plurality of inverter units for generating high frequency energy, each of the inverters having first and second input terminals, the first input terminals being coupled respecti... | 03/25/1986 |
| 4564733 | Current limiting control circuit for induction range The provision in a range having an electrically energizable heating unit and a control for selectively causing energization of the heating unit from a power supply of an improved circuit for causing time-delayed initiation of energization of the heating u... | 01/14/1986 |
| 4560851 | Single-ended push-pull induction heating apparatus An induction heating apparatus comprises an SEPP inverter including two transistors (Q1, Q2) connected in series, one transistor (Q1) being connected to a high electric potential end of a direct current power source (DB1) and the other transistor (Q2) bei... | 12/24/1985 |
| 4542273 | Circuit for inductive heating apparatus with multiple high frequency energy sources An inductive heating apparatus with multiple high frequency energy source. The apparatus includes plural resonant circuits each having an inductive heating coil and plural drive circuits for driving the resonant circuits. Switch circuits enable energizati... | 09/17/1985 |
