Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7224150 | Redundancy circuit for series-connected diodes A redundancy circuit for a diode circuit composed of a plurality of diodes connected in series, according to the present invention, includes: bypass circuits, each of which is connected in parallel to each group, the diode circuit being divided into a plurality of g... | 05/29/2007 |
| 7214915 | High frequency heating apparatus A heating apparatus includes an inverter power supply for driving the high frequency generating device, a holding member for holding the inverter power supply and cooling fan for cooling down the inverter power supply. The holding member is provided with a holding p... | 05/08/2007 |
| 7197367 | Household appliance comprising a control element and a display element The present invention relates to a household appliance including at least one control element and at least one display element, the control element(s) being able to be used to select programs of which, in each case, at least one program parameter is settable via the... | 03/27/2007 |
| 7091458 | Door assembly for microwave oven A door assembly for a microwave oven is provided. The door assembly includes a door panel at one side of the door, with a push bar and a latch each projecting toward a body portion of the microwave oven. A latch board including levers each rotatably coupled thereto ... | 08/15/2006 |
| 7064312 | Device for generating electromagnetic waves, method for operating a device of this type and method for modulating the electromagnetic waves to be generated using a device of this type in accordance with data to be transmitted A device is provided for generating electromagnetic waves, in particular for data transfer between a vehicle and a data storage medium, whereby a choke coil (30) is provided between at least one part of an energy supply device (1, 40, 41, 42) and an os... | 06/20/2006 |
| 7032936 | Door lock device for a domestic electrical appliance The device comprises a hook (2) connected to the door (5) and a support structure (1) in which is defined an aperture (4) for the introduction of the hook (2) and in which are mounted: a rotatable member (6) biased by a spri... | 04/25/2006 |
| 6921287 | Exchangeable module for an electric system An exchangeable module or battery 20 is wired to null terminals a, c. A main device 30 is joined to circuit terminals b, d. A connector 10 with a pair of shunt plates 11, 12 is used to electrically connect terminal a to b and terminal c t... | 07/26/2005 |
| 6875970 | Safety apparatus for output level-adjustable microwave oven A safety apparatus for an output level-adjustable microwave oven includes a fuse disposed in a power supply line that connects a high power relay or a low power relay with a primary coil of a high voltage transformer of the microwave oven. Where a wrong operation oc... | 04/05/2005 |
| 6828535 | Vehicle microwave oven with vibration damping unit A microwave oven for a vehicle includes an elastic vibration damping unit, and a joint unit which joins a body of the microwave oven to a vehicle through the vibration damping unit. The joint unit fixes the body of the microwave oven to the vehicle while the vibrati... | 12/07/2004 |
| 6777876 | Power-supply unit for microwave tube In a power-supply unit for a microwave tube, voltage between a helix power supply terminal and a cathode power supply terminal is divided into voltage slightly lower than the voltage of a collector power supply terminal. Uni-directional conductive means is provided ... | 08/17/2004 |
| 6680463 | Power supply control circuit and cooking device In the power supply control circuit, interposed between the power lines 1a and 1b is a serial circuit 21 constructed by connecting in series a radio interference suppression capacitor 2 for suppressing radio interference and a power supply holding switch ... | 01/20/2004 |
| 6624401 | Magnetron drive power supply Timing of zero voltage in zero-voltage detector for detecting zero voltage of a commercial power supply 1 is predicted and input from the zero-voltage detector 6 is received only for a given time before and after the predicted timing, whereby overvoltage ... | 09/23/2003 |
| 6624400 | Microwave oven with an apparatus for detecting life time of components thereof A microwave oven with an apparatus for detecting life time of components detects a frequency of opening and closing of a door switch even when AC power supply is cut-off, and detects a driving time of a high voltage transformer or a magneton according to ... | 09/23/2003 |
| 6552314 | Normal position detecting and latching mechanism of a functional component in a heating apparatus A normal position detecting mechanism for detecting a position of a functional component in a heating apparatus includes a drive member mounted on the functional component, a drive unit assembly mounted on the heating apparatus, and a switch for generatin... | 04/22/2003 |
| 6552313 | High-frequency heating apparatus for maximizing input current while securing a uniform margin relative to the cutoff current A high-frequency heating apparatus is designed to maximize the input current while securing a uniform margin relative to the cutoff current, thereby enabling maximized and efficient output of high-frequency waves. The high-frequency heating apparatus incl... | 04/22/2003 |
| 6515265 | Microwave oven in which rush current to high voltage transformer is suppressed When power supply to a high voltage transformer starts, the phase θ of the voltage of an AC power source when power supply to the high voltage transformer is stopped last time is referred to. In accordance with the value of the phase θ, the phase of the... | 02/04/2003 |
| 6479804 | Microwave oven and method for controlling power saving mode thereof A microwave oven includes a power supplying part, a cooking chamber, a door of the cooking chamber, a magnetron, and high and low voltage generating parts supplying voltage to the magnetron, further including: a door switch installed on branch lines of a ... | 11/12/2002 |
| 6399931 | Microwave oven with door safety switch device A microwave oven includes a main casing with a cooking chamber, a door for opening and closing the cooking chamber, and a magnetron in the main casing, for heating food within the cooking chamber. The microwave oven further includes a power supply part, a... | 06/04/2002 |
| 6362463 | High frequency heating apparatus A high frequency heating apparatus including a circuit for driving a magnetron. A circuit comprises a leakage transformer, a second capacitor connected in series to primary coil of said leakage transformer, a second switching device connected in parallel ... | 03/26/2002 |
| 6300610 | Microwave oven with door latching member A microwave oven comprises a main casing with a cooking chamber, a door for opening and closing the cooking chamber, and a magnetron in the main casing, for heating food within the cooking chamber. The microwave oven further comprises a power supply part;... | 10/09/2001 |
| 6087643 | Method for controlling cavity lamp of microwave oven A method for controlling a cavity lamp of a microwave oven has a step of determining whether a door is opened. A cooking state is identified by determining whether a cooking key of a key input portion is selected when the door is opened. Whether the cooki... | 07/11/2000 |
| 5986246 | Power supply cut-off apparatus of microwave oven A power supply cut-off apparatus of a microwave oven includes a switch box, which is pivotally opened and closed, and provided at a prescribed position of an outer panel. A power supply connection unit is provided inside of the switch box and connected de... | 11/16/1999 |
| 5986247 | High frequency heating device which is safe when its exterior is removed A high frequency heating device having a switching member screwed into a screw hole formed in a flange and fixed to the exterior. When the exterior is fixed to the body, a through-hole formed at that portion in the rear plate of the body through which the... | 11/16/1999 |
| 5925280 | Fuse housing for a microwave oven A microwave oven comprises a main body, a cooking chamber and an electrical component compartment. The electrical component compartment contains a fuse housing which is mounted on a bracket to hold a fuse. Plastic coupling members are integrally mounted o... | 07/20/1999 |
| 5889265 | Power supply cut-off apparatus of a microwave oven A microwave oven includes a power cord for supplying electrical power to electrical components of the oven. Wires of the cord are connected to a first set of terminals of a switch mounted on a main body of the oven. Electrical power is conducted from the ... | 03/30/1999 |
| 5880436 | Fail-safe convection oven assembly An oven assembly having a housing enclosing a cooking compartment and a blower compartment, and having a blower for circulating air within the cooking compartment, a door mounted to the housing, and a failsafe switch that is capable of deactivating the bl... | 03/09/1999 |
| 5856656 | Electrical grounding arrangement for a printed circuit board of a microwave oven The present invention relates to a ground structure of a printed circuit board in a microwave oven, where the microwave oven formed with a screw hole at a tip end of a bar extended from a body thereof and having a jumper wire connected to a ground pattern... | 01/05/1999 |
| 5856658 | Power supply cut-off apparatus of microwave oven A microwave oven includes a safety mechanism which automatically cuts off a supply of electric power to the oven when a panel of the oven housing has been removed, even if the power supply cord is still plugged in. The safety mechanism includes a switch d... | 01/05/1999 |
| 5856657 | Automatic power supply cut-off apparatus for a microwave oven A microwave oven includes a power cut-off safety switch which automatically cuts-off the supply of electric power to the oven if a housing panel is removed while the electric power supply cord is still plugged in. The switch is engaged by an extension of ... | 01/05/1999 |
| 5844214 | Power supply cut-off apparatus in a microwave oven A microwave oven includes an electric power supply shut-off mechanism for cutting off the supply of electric power when the housing is disassembled for repair while an electric power cord remains plugged into an electric outlet. A sensor in the form of a ... | 12/01/1998 |
| 5828041 | Power supply cut-off apparatus of a microwave oven A microwave oven includes a housing formed by relatively separable first and second panels. Electric switches are mounted on the first panel and are connected to respective wires of the power cord by the oven. Each switch includes a movable contact which ... | 10/27/1998 |
| 5818015 | Power supply cut-off apparatus of microwave oven A microwave oven includes a case forming a cooking chamber, and an outer panel mounted to the case. The outer panel is to be separated from the case when performing certain maintenance or repairs. Electrical terminals are mounted on the case and outer pan... | 10/06/1998 |
| 5767493 | Heating chamber with pressure responsive door mounting In a device (1) for the treatment of materials under the action of heat, and if appropriate also pressure, in a heating chamber consisting of a housing (2), containing the heating chamber, having a charging opening for the heating chamber which can be sel... | 06/16/1998 |
| 5595674 | Microwave oven with power switching controller An improved controller for a microwave oven capable of preventing it from an undesired heating caused by an erroneous operation thereof, which includes a heating member for generating heating energy; a power switch for controlling electric power supply to... | 01/21/1997 |
| 5530230 | Variable password safety interlock system for microwave ovens and other appliances A new variable password safety interlock system for microwave ovens and other computerized or electrical appliance allows the user to dynamically and automatically generate a new password immediately prior to each use. The variable password comprises some... | 06/25/1996 |
| 5521359 | System for coordinating operation of microwave oven with a second appliance An electrical control scheme which permits operating power for a microwave oven and a second electrical appliance, such as a refrigerator, to be withdrawn from a single electrical outlet utilizes electrical contacts across which a voltage differential is ... | 05/28/1996 |
| 5517006 | Microwave oven with a door locking system A microwave oven having a cavity and a door for closing off the cavity. The oven is fitted with a pressure actuated safety catch device which prevents opening of the door as a consequence of a sudden pressure increase in the cavity. The sudden pressure in... | 05/14/1996 |
| 5512735 | Electric cooking range having new safety features To improve the safety of the interlocking switch circuit comprising a monitor switch, primary switch and secondary switch which are on/off by the opening and closing of the electronic range door in order to control the operation/nonoperation of the microw... | 04/30/1996 |
| 5483045 | Microwave power system and method with exposure protection System and method for interrupting the delivery of microwave power to a microwave cavity when a door to the cavity is opened and an interlock switch fails to operate. A switch actuated by movement of the door applies an overload current to an overload pro... | 01/09/1996 |
| 5378877 | Method and apparatus for performing programmed cooking with an automatic delay start feature in microwave ovens The present invention provides a method and system for performing a delay start regardless of the open/close state of the microwave oven door, where the present time Tp is continually counted after a warning signal telling a user to close the door is prod... | 01/03/1995 |
