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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 8044605 | High-pressure discharge lamp with an improved starting capability, as well as a high-voltage pulse generator A spiral pulse generator is used to start the high-pressure discharge lamp, and is accommodated directly in the outer bulb of the lamp. The spiral pulse generator uses a material with a matched ∈ and μ. ... | 10/25/2011 |
| 7781981 | Circuit arrangement for a starting unit of a discharge lamp The invention relates to a switching arrangement for an ignition device of a discharge lamp (1), comprised of a spark gap formed by three or more electrodes (11) and connected in series with the primary winding (8) of a superimposed transformer ... | 08/24/2010 |
| 7462992 | Starter circuit having regulated starter voltage A circuit for the generation of ignition pulses for a lamp has: an ignition pulse transformer, a device for the generation of ignition pulses (ignition pulse generator) at a primary winding of the ignition pulse transformer, which are transformed in the secondary wi... | 12/09/2008 |
| 7432670 | Device for turning on high-pressure discharge lamp and lighting apparatus equipped with the device Even if a DC output voltage of a step-down chopper circuit (3) is lowered from a value in a non-lighted state or a no-load state due to a discharge occurring between conductors (105a) in a cable (104), the turn on detection circuit (26... | 10/07/2008 |
| 7425802 | Discharge lamp lighting apparatus, luminaire and illumination system There is provided a high-intensity discharge lamp lighting apparatus to be loaded with a plurality of types of high-intensity discharge lamps and connected with any one of the lamps to be lighted, and the apparatus comprises a power conversion circuit for converting... | 09/16/2008 |
| 7400100 | Discharge-lamp lighting apparatus and projector A discharge-lamp lighting apparatus includes a control circuit that determines electric power supplied to a high-pressure discharge lamp after the high-pressure discharge lamp is started by an igniter. The electric power is determined in accordance with a voltage co... | 07/15/2008 |
| 7373535 | Electric power saving apparatus comprising semi-conductor device to pass energy of infrared ray synthetic wavelength into electric cable using output pulse signal, electric circuit board structure for implementing the apparatus, and electric power saving method The present invention relates to an electric power saving apparatus wherein light energy is irradiated to a semiconductor device, with the light energy emitted when a voltage is supplied to a transmission line, such that the wavelengths of the electrons on the trans... | 05/13/2008 |
| 7368875 | Discharge lamp lighting device A through hole that is slightly larger than a size of a rear end of a transformer container is formed in a rear cover constituting a part of an external wall of a starting circuit unit. The transformer container houses therein a transformer and constitutes a transfo... | 05/06/2008 |
| 7365497 | Discharge lamp ignition device and projector To avoid the phenomenon of unsightly flickering in images projected by the projector, in high pressure discharge lamps—especially in high intensity discharge lamps, such as high pressure mercury lamps, metal halide lamps, and xenon lamps—that are used in project... | 04/29/2008 |
| 7352136 | DC-DC converter with reduced surge voltage and an electronic ballast including the converter for a discharge lamp A DC-DC converter reduces a surge voltage developed across a switching element (30) in making the voltage conversion with the use of a transformer (20) inherently having considerable leakage. A snubber circuit is included to absorb the surge energy and... | 04/01/2008 |
| 7348737 | Lighting circuit for high-pressure discharge lamp To provide a lighting circuit of a projector that can be driven by both the commercial alternating-current power supply and a battery and is convenient for portable use. A lighting circuit for a high-pressure discharge lamp 14 includes: a DC/DC converter 1... | 03/25/2008 |
| 7339330 | Methods and circuits for instant hot restart of high intensity discharge lamps A lamp ballast for operating a high intensity discharge lamp includes an electronic ballast circuit to supply an operating voltage to the discharge lamp, and an igniter circuit to supply starting pulses to the discharge lamp in a cold state and to supply hot restrik... | 03/04/2008 |
| 7332874 | Discharge lamp ignition device To provide a discharge lamp ignition device to light high-intensity discharge lamps in which, during alternating current ignition, the fluctuation of luminous flux on the reversal of polarity of the voltage impressed on the lamp is minimized and in which steady ligh... | 02/19/2008 |
| 7332868 | Discharge lamp lighting device The present discharge lamp lighting device is capable of rapid modulation in which a lamp current is rapidly reduced and rapidly restored. The current control circuit is provided to perform specific current control such that the brightness of a lamp is reduced by a ... | 02/19/2008 |
| 7327101 | Single point sensing for end of lamp life, anti-arcing, and no-load protection for electronic ballast Systems and methods are disclosed that facilitate sensing a pulse in a ballast circuit for a lamp when the lamp is in an end-of-life (EOL) stage or when the lamp is experiencing an arcing conduction condition, such as may occur when a contact between the lamp and it... | 02/05/2008 |
| 7322718 | Multichip LED lighting device In a module socket, a connecter and a connector are connected by wiring, and three LED modules are connected in parallel with respect to a constant voltage circuit unit via the wiring. Each module has a constant current circuit unit and an LED mounting unit. The con... | 01/29/2008 |
| 7282869 | HID ballast and lamp tester The instant invention relates to an HID ballast and lamp tester, which provides visual indication of failure of either the ballast or lamp by continuously monitoring the status of the HID lighting system. The HID ballast and lamp tester detects and utilizes the volt... | 10/16/2007 |
| 7276862 | Stabilizer circuit for high-voltage discharge lamp A stabilizer circuit for a high-voltage discharge lamp is provided. The stabilizer comprises an electromagnetic interference (EMI) filter; a rectifying unit; a power factor correction (PFC) circuit; a buck converter; a commutator; an igniter; a high-voltage discharg... | 10/02/2007 |
| 7275835 | Projector for changing driving frequency for driving light source lamp within allowable frequency range A projector according to the present invention comprises a lamp driving control circuit for driving an ultra-high pressure mercury lamp at a driving frequency which is changed within an allowable frequency range. For example, the lamp driving control circuit may ran... | 10/02/2007 |
| 7274153 | Portable fluorescent drop-light A hand-held fluorescent lamp assembly powered by typical line supply of 120 VAC, 60 Hz via an attached power cord and employing multiple commonly available fluorescent lamps. The assembly includes switches to independently control the multiple fluorescent lamps. The... | 09/25/2007 |
| 7259523 | Circuit arrangement In a bride circuit comprising a lamp choke that might partially saturate during the ignition of the lamp, at least one of the switches is switched off when the amount of charge displaced through it in forward direction equals a predetermined value. Despite the parti... | 08/21/2007 |
| 7221106 | Cordset based appliance controller An apparatus and method for distributed control of an electrical appliance having a plug and a load and two power carrying conductors connecting the plug to the load, comprising locating power control elements completely within the plug, connecting interface element... | 05/22/2007 |
| 7215697 | Matched impedance controlled avalanche driver Controlled avalanche driver circuits and apparatuses for gas lasers. One embodiment typically delivers short, rapid, high voltage ionizing pulses in combination with an electric field whose magnitude is too low to sustain a normal glow discharge. The plasma is typic... | 05/08/2007 |
| 7211965 | High intensity discharge lamp with current sense resistor A circuit for operating a high intensity discharge (HID) lamp includes an H-bridge connected between a common terminal and a power line, and a control circuit connected to the H-bridge. The control circuit includes a transformer having a primary winding connected be... | 05/01/2007 |
| 7196478 | Circuit arrangement A driver for driving a gas discharge lamp includes an inductive ballast implemented as auto-transformer having a central tap, connected between one output terminal and a first input terminal, and a triac connected between a second output terminal and a second input ... | 03/27/2007 |
| 7187131 | Discharge lamp with internal starting electrode An arc discharge light source (10) for automotive headlight applications comprises an arc tube (12) having a hollow body (14) arrayed along a longitudinal axis (16) and provided with first and second ends (18, 20). The first and se... | 03/06/2007 |
| 7164241 | Method and apparatus for driving a gas discharge lamp A method for driving a gas discharge lamp (1) is described, wherein electric first DC power is provided at a relatively high voltage and a relatively low current. Said first power is converted down to second DC power at a relatively low voltage and a relative... | 01/16/2007 |
| 7151330 | Apparatus and method for generating high voltages using a voltage inversion generator and multiple closed-path ferrites A vector inversion generator utilizes closed-path ferrites to modify the characteristics of the generator. The closed-path ferrites increase an inductance within a portion of the generator and additionally provide a protective shield for associated electronic circui... | 12/19/2006 |
| 7141933 | Systems and methods for a transformer configuration for driving multiple gas discharge tubes in parallel An apparatus and methods for balancing current in multiple negative impedance gas discharge lamp loads. Embodiments advantageously include balancing transformer configurations that are relatively cost-effective, reliable, efficient, and good performing. Embodiments ... | 11/28/2006 |
| 7138731 | Switching converter having a controllable load element Switching converter to convert an input direct current (UE) into at least one output direct current (UA), wherein an internal auxiliary voltage (UH1, UH2) is derived from at least one auxiliary winding (WH1, W | 11/21/2006 |
| 7138769 | Device for operation of a high pressure discharge lamp and a projector device A device for operating a discharge lamp of the alternating current operating type has a high pressure discharge lamp with a silica glass discharge vessel in which a pair of opposed electrodes are located and on which a trigger electrode is located, a feed device whi... | 11/21/2006 |
| 7129650 | Lighting apparatus for high intensity discharge lamp A lighting apparatus of high intensity discharge lamp comprises a DC power source, a series connection of a first and a second transistors; a series connection of a first and a second capacitors connected in parallel with the series connection of the transistors; a ... | 10/31/2006 |
| 7102295 | Electronic device with illumination circuit and EL device utilizing the same An electronic device having an illumination circuit. The illumination circuit utilizes an AC current of an AC driving device to drive an illumination device such as an electroluminescent lamp and the remaining life of the AC driving device indicated by the brightnes... | 09/05/2006 |
| 7091676 | Arc maintenance device for high density discharge lamps including an adaptive wave form monitor A supplemental arc maintenance electrical supply for a high density discharge (HID) lamp (L) for applying a high frequency supplemental arc voltage to maintain the arc during a period of unstable or intermittent AC supply in addition to or in lieu of the voltage or ... | 08/15/2006 |
| 7084580 | Discharge lamp lighting circuit A discharge lamp lighting circuit 1 has: a DC-AC converter circuit 3 which receives a DC input, and which conducts AC conversion and a boosting operation; and a starting circuit 4 which supplies a starting signal to a discharge lamp 10. T... | 08/01/2006 |
| 7081718 | Power supply circuit for flash discharge tube A voltage is applied across the positive electrode and negative electrode of a flash discharge tube (xenon flash lamp) to emit light by a charge and discharge capacitor. This voltage application accumulates energy in a residual inductance existing in the circuit con... | 07/25/2006 |
| 7077530 | Projector of external power supply The invention is to provide a projector of external power supply, which comprises: a DC (direct current) power supply port, a step-up circuit, a voltage regulation circuit, a lamp, and an igniter. Wherein, a DC voltage provided from outside is received by the DC pow... | 07/18/2006 |
| 7075253 | Method for operation of a lighting system In an operating method for a lighting system and a lighting system in which a readiness command is provided, in response to such readiness command a ballast drives a discharge lamp in such a way that it heats the electrodes further if the discharge lamp is not burni... | 07/11/2006 |
| 7075246 | Discharge lamp illumination circuit A discharge lamp illumination circuit 1 has a DC-AC conversion circuit 3 which effects AC conversion and boosting upon receipt of a DC input, and a starter circuit 4 for supplying a start-up signal to a discharge lamp. Power output from the DC-A... | 07/11/2006 |
| 7061183 | Zigzag topology for balancing current among paralleled gas discharge lamps An apparatus and methods for balancing current in multiple negative impedance gas discharge lamp loads. Embodiments advantageously include balancing transformer configurations that are relatively cost-effective, reliable, and efficient. Embodiments include configura... | 06/13/2006 |
