Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
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| Number | Title | Issue Date |
| 7394204 | Zero crossing detection of line voltage/current of variable amplitude A method and apparatus for detecting a zero crossing or desired phase angle of a power line signal having a variable amplitude uses a ratio between a peak amplitude of the power line signal and the amplitude of the power line signal at a desired phase angle for a kn... | 07/01/2008 |
| 7265684 | Onboard equipment for aircraft and the like An emergency lighting system for an aircraft comprises networked light units that communicate wirelessly with a master controller to switch the light units on in an emergency. Each unit has its own battery power source and is arranged conserve power consumption by c... | 09/04/2007 |
| 7247999 | Dimmer for use with a three-way switch A smart dimmer for controlling the intensity of a lighting load from a source of AC power is operable to replace one of the three-way switches in a standard three-way lighting system without the need to replace the other three-way switch with a unique accessory swit... | 07/24/2007 |
| 7215523 | Apparatus for protecting an integrated circuit and method thereof An apparatus for protecting an integrated circuit is applied to an electrical apparatus having a control unit. The control unit is used for controlling the integrated circuit and the protecting apparatus. The protecting apparatus includes a power input terminal, a p... | 05/08/2007 |
| 7200017 | Controller and driving method for supplying energy to display device circuitry A controller for controlling at least two power circuits comprises a phase-shift selector for generating a reference signal according to variable input signals, the reference signal is programmed to indicate an amount of phase-delay according to a number of CCFL pow... | 04/03/2007 |
| 7193404 | Load control circuit and method for achieving reduced acoustic noise A load control circuit having first and second terminals for connection in series with a controlled load comprises a bidirectional semiconductor switch for switching at least a portion of both positive and negative half cycles of an alternating current source wavefo... | 03/20/2007 |
| 7098611 | Dimming control system with distributed command processing A dimming control system includes dimmer modules that receive dimming level information from one of at least two control modules. Each dimmer module includes a microprocessor that provides internal intelligence for controlling power to a load in response to dimming ... | 08/29/2006 |
| 7038399 | Methods and apparatus for providing power to lighting devices Methods and apparatus for providing power to devices via an A.C. power source, and for facilitating the use of LED-based light sources on A.C. power circuits that provide signals other than standard line voltages. In one example, LED-based light sources may be coupl... | 05/02/2006 |
| 6979957 | Apparatus for driving lamp of liquid crystal display device The present invention relates to a lamp driving apparatus of a liquid crystal display capable of simplifying a structure of the liquid crystal display and in addition preventing a leakage current of the lamp driving apparatus. The lamp driving apparatus of the liqui... | 12/27/2005 |
| 6930455 | Theatrical lighting control network A theatrical lighting control network is disclosed which incorporates a local area network for communication among a number of node controllers and control consoles or devices employed in establishing lighting or other effects levels in a theater, film production st... | 08/16/2005 |
| 6926423 | Light with simulated candle flicker A device and system for simulating the flicker of candle flame is provided by the present invention. A series of independent charging and discharging circuits are provided that produce power waveforms having duty cycles that vary from a highest duty cycle to a lowes... | 08/09/2005 |
| 6841936 | Fast recovery electron multiplier An improved electron multiplier bias network that limits the response of the multiplier when the multiplier is faced with very large input signals, but then permits the multiplier to recover quickly following the large input signal. In one aspect, this invention pro... | 01/11/2005 |
| 6469457 | Power and data distribution in lighting systems Improvements to lighting systems, especially for entertainment and architectural applications are disclosed, including apparatus that permit a user to readily field-configure power distribution to branch circuits to be dimmed or un-dimmed, single- or mult... | 10/22/2002 |
| 6469453 | Backlight for liquid crystal display A backlight used for a liquid crystal display includes a plurality of light emitting units, and a phase controller for adjusting the phase of the light emitting units. The light emitting units are turned on and off based on pulse signals of a predetermine... | 10/22/2002 |
| 6211627 | Lighting systems Improvements to lighting systems, especially for entertainment and architectural applications are disclosed, including apparatus that permit a user to readily field-configure power distribution to branch circuits to be dimmed or un-dimmed, single- or mult... | 04/03/2001 |
| 6160360 | Power control with reduced radio frequency interference A circuit for controlling the power to a load such as motor or incandescent lamp with reduced radio frequency interference employs a microcontroller to trigger a power transistor into a conductive state for supplying power to the load. The power transisto... | 12/12/2000 |
| 6137238 | High-efficiency self-regulated electronic ballast with a single characteristic curve for operating high-pressure sodium vapor lamps A high-efficiency self-regulated electronic ballast with a single characteristic curve for operating high-pressure sodium vapor lamps by means of an AC-to-DC converter circuit, a power factor correcting regulator circuit for reducing harmonic distortion, ... | 10/24/2000 |
| 6034790 | Soft-starting system for a lamp in an image forming device or the like A lamp power supply circuit for an image forming device, which is not provided with a full-wave rectifier and any additional noise reducing circuit but is capable of effectively suppressing inrush current not to produce noise that may cause erroneous oper... | 03/07/2000 |
| 5821703 | Data distribution in lighting systems A lighting system made up of a plurality of light fixtures which each produce a light beam, in which each of a plurality of varying devices, each having an input and an output, and each capable of varying at least one parameter of the light beam from at l... | 10/13/1998 |
| 5815067 | Single control wire device for HID dimming A dimming control for a high intensity lighting system uses a single additional control wire for control of the dimming function. The lighting system operates on multi-phase power. A transmitter for transmitting a control signal over the single control wi... | 09/29/1998 |
| 5770928 | Dimming control system with distributed command processing A dimming control system includes dimmer modules which receive dimming level information from a control module. Each dimmer modules includes a microprocessor which provides internal intelligence for controlling power to a load in response to the dimming l... | 06/23/1998 |
| 5689155 | Electronic stabilizer having a variable frequency soft start circuit An electronic stabilizer having a variable frequency soft start circuit, said circuit having a secondary coil coupled to a drive transformer of the electronic stabilizer. In the initial period when power is connected, the secondary coil may supply an indu... | 11/18/1997 |
| 5672941 | Inductorless controlled transition light dimmers optimizing output waveforms Lamp dimmers are disclosed in which, in the course of varying average power supplied to the lamp load, the semiconductor power control devices transition between one and the other of substantially conductive and non-conductive power conditions, the durati... | 09/30/1997 |
| 5619081 | Asymmetrical AC trigger simulation The present invention teaches a dimmer which incorporates an alternating current (AC) trigger which exhibits asymmetrical electrical characteristics. This eliminates the undesirable snap on hysteresis effect associated with conventional dimmers utilizing ... | 04/08/1997 |
| 5600209 | Electronic candle simulator Apparatus for simulating a candle flame in which the current through the filament of a bulb is varied from a first value to a second value and back to the first value during spaced periods that vary from a period of maximum duration to a period of minimum... | 02/04/1997 |
| 5530301 | Electronic delay turn off switch An electronic delay turn off switch including a bridgelike array of four diodes disposed between an alternating current power source and a load wherein the diodes have anodes and cathodes in opposing disposition and having an SCR with anode connected to t... | 06/25/1996 |
| 5455490 | Power and signal distribution in lighting systems A lighting control system distributes both the alternating current supply and control signals representing desired adjustments to fixture parameters, such as intensity, via connections including power contacts and, for control signals, an electrically iso... | 10/03/1995 |
| 5323088 | Dimming control circuit A dimming control circuit for a plurality of lighting fixtures includes a separate semiconductor power switch, e.g., a silicon-controlled rectifier or SCR, for providing controlled amounts of pulsed, unidirectional electrical current to each lighting fixt... | 06/21/1994 |
| 5264761 | Programmed control module for inductive coupling to a wall switch A lamp control module including a housing having a receptacle therein with a transformer winding wound around the inner walls of the receptacle in being operatively driven by a programmed microprocessor. The transformer winding of the module is further op... | 11/23/1993 |
| 5179324 | Dimmer with reduced filtering losses A dimmer with reduced filtering losses is connected into a conductor supplying power to a load from a mains power supply. It conventionally comprises a triac in series with a filter inductor between an input terminal and an output terminal and a circuit g... | 01/12/1993 |
| 5144205 | Compact fluorescent lamp dimming system A dimming system provides power from a switch-controlled power source in series with a leakage auto-transformer to a compact fluorescent lamp. The system incorporates a high-frequency resonant converter that provides high voltages to strike and maintain a... | 09/01/1992 |
| 5027052 | Circuit arrangement for generating a pulsatory supply voltage for a load from a direct voltage A circuit arrangement for generating a pulsatory supply voltage for a load (1), such as a halogen incandescent lamp, from a source of direct voltage, in which a predetermined effective value of the supply voltage remains substantially constant in the case... | 06/25/1991 |
| 5004957 | Dimming control circuit A circuit and a method for controlling the dimming of incandescent lights using a pair of antiparallel connected SCRs which are fired at the same frequency as the frequency of the AC line power to achieve phase control of the power supplied to the light. ... | 04/02/1991 |
| 4902936 | Light adjusting apparatus A light adjusting apparatus comprising a lamp connected to a commercial a.c. power supply via a triac, and a switching control circuit operable by a direct current obtained by directly rectifying the current of the power supply for controlling the conduct... | 02/20/1990 |
| 4893063 | Apparatus for improving the efficiency of a lighting element A voltage reduction unit for reducing the voltage supplied to a lighting element to a prescribed value and for maintaining the prescribed voltage across the lighting element independently of the current flowing through it. A lighting element is connected ... | 01/09/1990 |
| 4868460 | Transformer dimmer circuit This invention is a circuit for controlling the power received by a load. The operation of this circuit is based on variations of voltage amplitude rather than phase as is the case with other circuits utilizing the phase control principle. A pair of termi... | 09/19/1989 |
| 4862039 | Line regulated ballast circuit The present invention relates to an improved line regulated ballast circuit for use in controlling varied lighting applications such as, for example, neon signs and fluorescent tubes. The inventive circuit, when used in neon lighting applications, may inc... | 08/29/1989 |
| 4797599 | Power control circuit with phase controlled signal input One or more power dimmers have a preshaped phase controlled input signal connected to their control input. The preshaped phase controlled input signal is generated from the output of a master dimmer having conventional phase control circuits operated from... | 01/10/1989 |
| 4766350 | Electric circuit with transient voltage doubling for improved operation of a discharge lamp The invention relates to an electric arrangement for operating a an electric discharge lamp (13) which is connected in series with a coil (14) and a switch (15) to a pulsatory direct voltage source. The combination of the lamp and the coil is shunted by a... | 08/23/1988 |
| 4749917 | Two-tone dimmer circuit The circuit includes a super regenerative detector (12) for receiving a modulated radio frequency signal from a transmitter. The output of the super regenerative detector is amplified and sent into a high frequency interpreter circuit (16, 18, 20) which d... | 06/07/1988 |
