Bizarre Patents
Safety System For Remove a Rider From a Vehicle by Deploying a Parachute
Methods and apparatus for reducing the velocity of a rider in or on an open cockpit vehicle when the rider is thrown from the vehicle.
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 |
| 7612504 | Lamp with integral voltage converter having phase-controlled dimming circuit for reducing RMS load voltage An incandescent lamp includes a lamp voltage conversion circuit within the lamp and connected to a lamp terminal, where the voltage conversion circuit converts a first line voltage at the lamp terminal to a second RMS load voltage usable by a light emitting element ... | 11/03/2009 |
| 7372209 | Microwave energized plasma lamp with dielectric waveguide A plasma lamp including a waveguide body including at least one dielectric material with a dielectric constant greater than approximately 2. The body is coupled to a microwave source which causes the body to resonate in at least one resonant mode. At least on... | 05/13/2008 |
| 7053564 | Ballast for a discharge lamp The invention relates to ballast for a discharge lamp (16), comprising a direct-current supply phase (2), semiconductor switches (10, 11), operated at a high-frequency clock frequency for modifying the direction of current through the discharge ... | 05/30/2006 |
| 7042168 | Fluorescent-lamp driving apparatus adopting high-frequency inverter driving method, and compact self-ballasted fluorescent lamp equipped with such fluorescent-lamp driving apparatus A fluorescent-lamp driving apparatus and a compact self-ballasted fluorescent lamp, when a blowout occurs at the electrodes of the arc tube, swiftly and assuredly stop a glow discharge at the electrodes of the arc tube, therefore have heightened security. In the com... | 05/09/2006 |
| 7009346 | Driving an EL panel without DC bias An inverter is coupled to an EL lamp by a high pass filter including a series capacitor and a shunt resistor. The resistor is coupled in parallel with the EL lamp. The high pass filter has a time constant greater than 0.005 seconds and the capacitor has a capacitanc... | 03/07/2006 |
| 6958582 | Lamp current control circuit The present invention is a lamp current control circuit applied to a high voltage outputting combination for providing uniformity of lamp current of at least one load. Voltage dividing units of the lamp current control circuit receive high power signals output by th... | 10/25/2005 |
| 6894440 | Method and device for lighting an electronic or electromechanical apparatus The present invention is a lighting device for an electronic or electromechanical apparatus such as a timepiece of the wristwatch type. The invention including a device displaying time-related or other information, this lighting device including a light source for l... | 05/17/2005 |
| 6495970 | Lamp stand with multi-stage light modulation A lamp stand with multi-stage light modulation includes plural resistors annularly arranged to form a circular space. The resistors have terminals soldered on the outer walls of U-shaped contact blades, with an empty position terminal provided in the circ... | 12/17/2002 |
| 6448720 | Circuit for driving an HID lamp A circuit arrangement and control thereof for igniting a high intensity discharge (HID) lamp, for reducing the variation of the resonant ignition voltage under the parasitic capacitive loading condition, and for increased circuit stability. The high frequ... | 09/10/2002 |
| 6414446 | Switching device A switching device intended for igniting and operating a high-pressure discharge lamp, provided with a switch-mode power supply (smps) for supplying a controlled current to the lamp, and with a pre-conditioner for feeding the smps. The pre-conditioner is ... | 07/02/2002 |
| 6191540 | Devices for powering a motor vehicle headlight discharge lamp A power supply system for an automobile vehicle headlight discharge lamp, the system including a DC/DC converter with a capacitor at its output, a DC/AC converter powered by the voltage across said capacitor, and a module for generating a high-voltage bre... | 02/20/2001 |
| 6072286 | Auxiliary lighting control circuit and method for a HID lamp lighting system An auxiliary lighting control circuit and method for a lighting system having a HID lamp as the primary light source and an auxiliary light source for providing light when the HID lamp is extinguished or below full brightness but power remains available t... | 06/06/2000 |
| 5973608 | Remotely activated electrical control arrangement An arrangement for controlling the activation of an electrical appliance. The arrangement utilizes a capacitive sensor to recognize the physical proximity of a user (e.g., a hand) to an internal capacitive sensing means. The capacitive change is applied a... | 10/26/1999 |
| 5869936 | Strobe device A strobe device according to the present invention includes: a main capacitor; and step-up means including at least one step-up capacitor, the at least one step-up capacitor being rapidly charged via a flash discharge tube in an ionization state, a charge... | 02/09/1999 |
| 5866980 | Sulfur/selenium lamp with improved characteristics The spectral energy characteristic of a discharge lamp is controlled by changing the density of the fill substance. The spectral characteristic can be shifted while substantially maintaining its shape by changing the density of the fill. A sulfur or selen... | 02/02/1999 |
| 5543690 | High voltage ignition circuit for a discharge lamp The invention relates to a circuit arrangement for operating a discharge lamp. According to the invention the series connection of a PTC thermistor V1 with a bi-directionally acting breakdown voltage component V2 is disposed parallel to the inductance L1 ... | 08/06/1996 |
| 5387847 | Passive power factor ballast circuit for the gas discharge lamps A ballast for a gas discharge lamp circuit has a d-c output which contains three series-connected diodes connected across the output terminals, a pair of capacitors connected from different respective nodes of the diodes to respective ones of the output t... | 02/07/1995 |
| 5387849 | Lamp ballast system characterized by a power factor correction of greater than or equal to 90% A ballast circuit for a fluorescent lamp including a magnetic choke electrically connected between the lamp and a power supply and an electronic starter circuit electrically coupled across said lamp, which ballast circuit is configured to provide a power ... | 02/07/1995 |
| 5343125 | High-pressure discharge lamp with pulsed inverter operating circuit, and method of operating a discharge lamp To ensure ignition of a high-pressure discharge lamp, for example a metal vapor halogen high-pressure dicharge lamp which has an ignition circuit, and is operated by direct current from an inverter circuit controlled for pulse width modulation, current fl... | 08/30/1994 |
| 5159244 | Ignition circuit for gas discharge lamp A starter circuit is supplied with 120 volt 60 Hz power, and is coupled to a gas discharge lamp having in an interior thereof a gas and two spaced electrodes. When the starter circuit applies to the electrodes a voltage in excess of a threshold voltage, t... | 10/27/1992 |
| 5118991 | Electron beam generator for an electron gun In an electron beam generator where the heating current for the cathode is transformed by an insulating transformer 7 disposed on the high-voltage insulator 4 of the beam head, the primary winding of this insulating transformer 7 being connected to ground... | 06/02/1992 |
| 5070277 | Electrodless hid lamp with microwave power coupler An electrodeless lamp may be formed with a capsule having a radiant energy transmissive material defining an approximately cylindrical enclosed volume having an external length less than 20.0 millimeters, and an outer diameter less than 8.0 millimeters. T... | 12/03/1991 |
| 4988923 | Lighting equipment for providing bright illumination with limited surge A novel lighting equipment for providing bright illumination with limited surge, including a capacitor connected in parallel with an incandescent lamp, the capacitor having a capacitive reactance lower than the resistance of the filament at ambient temper... | 01/29/1991 |
| 4961029 | Discharge lamp lighting device A discharge-lamp lighting device comprises a voltage generating circuit for generating a high-frequency voltage for lighting a discharge lamp, a self-oscillating device provided in the path of lamp current flowing through the discharge lamp for exciting t... | 10/02/1990 |
| 4914354 | Reactor-type ballast circuit An improved, more energy efficient reactor-type ballasting circuit for fluorescent lamps includes an inductive ballasting coil for directly applying an AC line voltage to the cathodes of a lamp without an intermediate autotransformer and also includes a g... | 04/03/1990 |
| 4887008 | Electrodeless lamp bulb of modified shape for providing uniform emission of radiation An electrodeless lamp bulb of modified shape for providing more uniform emission of radiation. In the preferred embodiment the bulb is primarily in the shape of a sphere, but has at least a non-spherical portion comprised of diametrically opposed relative... | 12/12/1989 |
| 4746841 | Fluorescent lamp operating device A fluorescent lamp operating device having a power supply, a circuit for converting the output power from the power supply into a high-frequency power, a lighting circuit connected to a secondary side of a transformer of the high-frequency power converter... | 05/24/1988 |
| 4723096 | Arc lamp power supply using a voltage multiplier A power supply is provided for an arc discharge lamp (38) which includes a relatively low voltage high current power supply section and a high voltage starter circuit (10). The low voltage section includes a transformer (15), rectifier (24), variable resi... | 02/02/1988 |
| 4647820 | Discharge lamp ignition and supply circuit having a PTC resistor In a circuit for an inductively stabilized discharge tube (1) provided with two preheatable electrodes (2, 3) the ends of one electrode (2) are connected via a first capacitor (22) and a second capacitor (24), respectively, to the corresponding ends of th... | 03/03/1987 |
| 4647817 | Discharge lamp starting circuit particularly for compact fluorescent lamps To provide for reliable ignition of low-pressure discharge lamps, particularly compact fluorescent lamps, operated at high frequency, for example in the order of about 45 kHz, an ignition circuit is connected in parallel to the lamp and serially with the ... | 03/03/1987 |
| 4645981 | Process and apparatus for the surface treatment of workpieces by glow discharge For the glow discharge between a receptacle and a workpiece, the glow discharge path is connected in series with a first switch. A capacitor circuit is charged via the glow discharge path and two diodes. By closing a switch, the previously positive pole o... | 02/24/1987 |
| 4626745 | Ballast circuit for lamps with low voltage gas discharge tubes A ballast circuit arrangement for providing a predetermined desired A.C. voltage to enhance the operation of the gas discharge tube serving as the main light source in a lighting unit of the type which also comprises an incandescent filament serving as a ... | 12/02/1986 |
| 4618803 | Current limited strobe charge circuit A current limited strobe charging circuit in which the charging current is automatically limited during the time required to reform the primary storage capacitor after a long period of non-use without materially effecting the current flow and time require... | 10/21/1986 |
| 4609849 | High pressure sodium vapor lamp having D.C. resistive ballast circuits Various embodiments of direct current (D.C.) ballasting circuits for low wattage high pressure sodium (HPS) vapor lamps are disclosed. In one ballast embodiment a negative going high voltage pulse is applied directly to the H.P.S. lamp cathode during the ... | 09/02/1986 |
| 4572991 | Higher efficiency incandescent lighting unit having an improved ballast unit An improved general service incandescent lamp having an improved capacitive ballast circuit for operating a low voltage filament of the lamp is disclosed. Various embodiments of an improved capacitive ballast circuit that substantially eliminates unwanted... | 02/25/1986 |
| 4544863 | Power supply apparatus for fluorescent lamp A power supply apparatus for a fluorescent lamp comprises an inverter circuit for converting AC line power to a high-frequency drive voltage having a square waveform, this high-frequency drive voltage being applied to a fluorescent lamp through an inducto... | 10/01/1985 |
| 4540917 | Pulse network for fluorescent lamp dimming A pulse network is connected to the inductive ballast of a fluorescent lamp dimmer and includes a discharge resistor in parallel with the pulse network capacitor. The resistor size is such that it will completely discharge the capacitor prior to the initi... | 09/10/1985 |
| 4513225 | Fluorescent lamp series system A pair of 48-inch long preheat fluorescent lamps, each one and a half inches diameter and consuming less than 10 watts power per foot of length, are connected in series with each other and with a ballast, for operation from 50 or 60 hertz a-c line voltage... | 04/23/1985 |
| 4406976 | Discharge lamp ballast circuit A discharge lamp ballast circuit comprises at least one discharge lamp connected in series circuit with a ballast capacitor and inductor across a pair of input terminals for a source of A.C. supply voltage. A controlled semiconductor switching element is ... | 09/27/1983 |
| 4388564 | Energy saving fluorescent lamp circuit A fluorescent lamp ballast circuit comprising conductors for connection to an electrical power source, and an impedance such as a capacitor connected between one of the conductors and the power source. A positive temperature coefficient resistor may be pr... | 06/14/1983 |
