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| Number | Title | Issue Date |
| 8169210 | Contactless system and method for electrostatic sensing with a high spatial resolution In the illustrated embodiment of the invention a scanning system is provided for scanning a chargeable surface for latent image detection. The chargeable surface is charged to a first potential, and a scanner probe is charged to a second potential within a predeterm... | 05/01/2012 |
| 8154274 | Safety interlock A safety interlock for use in a medical device having a control system for controlling operation of the medical device includes a central tubular portion defining a fluid passage for passing fluid through the safety interlock. An outer ring portion is adapted for mo... | 04/10/2012 |
| 8129979 | Arrangement for lightning detection at a wind turbine An arrangement to detect a lightning strike in a wind turbine is provided. According to the arrangement, the wind turbines contains an ozone sensor. The ozone sensor is located close to a component of the wind turbine. The component is constructed and arranged in a ... | 03/06/2012 |
| 8115470 | Broadband isotropic antenna Broadband isotropic (omnidirectional) antenna typically comprising three orthogonal small size monopole antennas protruding through the centers of three adjacent sides of the small metal cube. Each antenna has the frequency correcting network and RF amplifier. Signa... | 02/14/2012 |
| 8049486 | Coupled electric field sensors for DC target electric field detection In various embodiments, an apparatus for detecting electric fields is disclosed that includes an array of non-linear elements configured into an oscillator with each coupled to one or more electric-field sensing plates. In various embodiments, an output of the array... | 11/01/2011 |
| 7940038 | Grid sensor for the two-dimensional measurement of different components in the cross section of a multiphase flow Disclosed is an arrangement for quickly measuring the phase distribution or the component distribution in a flow cross section for substance mixtures also of a non-conducting type by measuring the complex electrical admittance. Said arrangement essentially features ... | 05/10/2011 |
| 7923982 | Semiconductor integrated circuit A semiconductor integrated circuit is provided with a voltage level detector which detects a voltage level of a signal wire, and a transition time detector which detects a time length of a transition period during which the signal wire changes from an inactive volta... | 04/12/2011 |
| 7898239 | High-voltage generator of an X-ray apparatus comprising a high-voltage measurement device A high-voltage (HV) generator of an X-ray device comprises a high-voltage measurement device. The measurement device comprises a compact component integrating both the measurement resistor and the capacitors enabling both the protection of said resistor and the elim... | 03/01/2011 |
| 7772826 | Detection of lightning A lightning detector for lightning detection and a lightning detection method, wherein the lightning detector uses at least two separate channels or frequency bands for lightning detection, and wherein the lightning detector is a mobile RF device provided with radio... | 08/10/2010 |
| 7719253 | Apparatus for verifying a low noise block output voltage The present invention relates to system diagnostic circuitry for antenna systems with active antenna components. More specifically, the present invention discloses an apparatus comprising a connection between an antenna and a power supply conducting a first DC volta... | 05/18/2010 |
| 7719254 | Method for setting a reference potential of a current sensor and arrangement for determining the reference potential of a power semiconductor device A method for setting a reference potential of a current sensor in a power semiconductor device is disclosed. On the basis of a specific geometry and a typical two-dimensional potential distribution of the power semiconductor device, a plurality of tapping points is ... | 05/18/2010 |
| 7671578 | Detection circuit for sensing the input voltage of transformer A circuit for detecting an input voltage of a transformer is provided. The circuit includes a current source circuit coupled to a winding of a transformer. A current-to-voltage circuit is coupled to the current source circuit to generate a first voltage in response ... | 03/02/2010 |
| 7633283 | Method for lightning strike protection and verification of magnetizable dielectric inserts An apparatus, system, and method for lightning strike protection and verification are provided. In one embodiment, the apparatus includes at least one fastener extending through both the structure and substructure to secure the structure and substructure together. T... | 12/15/2009 |
| 7511467 | Detection of lightning A lightning detector for lightning detection and a lightning detection method, wherein the lightning detector uses at least two separate channels or frequency bands for lightning detection, and wherein the lightning detector is a mobile RF device provided with radio... | 03/31/2009 |
| 7508186 | Registration of lightning strike in a wind turbine The invention relates to aspects of a method of registering lightning strikes in the blade of a wind turbine, use of such method, a system of exercising the method. The method according to the invention of registering lightning strikes involve that the method compri... | 03/24/2009 |
| 7508187 | Device and system for the measurement of an external electrostatic field, and system and method for the detection of storms The invention relates to a device for the measurement of an external electrostatic field, for example, for the detection of storms, which includes a first conductive element (1); an amplifier (2)in charge configuration; an electronic control device ( | 03/24/2009 |
| 7446522 | Constant contact wheel for close interval survey devices A constant contact reference wheel system includes a vehicle carrying a water reservoir, and a constant contact reference wheel. The constant contact reference wheel includes a frame having a first end and a second end, an attachment mechanism carried by the first e... | 11/04/2008 |
| 7439746 | Electrostatic voltmeter An electrostatic voltmeter has an input sensing terminal, a first operational amplifier, a second operational amplifier, a first reference voltage terminal electrically connected to the non-inverting input of the second operational amplifier, a low reference voltage... | 10/21/2008 |
| 7427925 | Hazard detector A hazard detector has an electronic circuit with a start-up program for causing emission of a local indicator signal, such as a flashing signal from a LED, if power and ground terminals of the detector are connected with proper orientation, i.e. polarity, to power a... | 09/23/2008 |
| 7417843 | System and method of protecting metallic structures from lightning strikes A lightning protection system having a sensor for detecting a polarity of atmospheric charges, a direct current power supply, a controller interactively connected to the power supply and to the sensor so as to select a polarity of the direct current in relation to p... | 08/26/2008 |
| 7411401 | Systems and methods for reducing common-mode platform noise in electric-field sensors Systems and methods for reducing electrostatic platform noise in electric-field sensors due to various self-charging and discharging processes are provided. A representative method includes: identifying avoidance regions of an electrostatically-floating sensor platf... | 08/12/2008 |
| 7397233 | Voltage measuring device A device for measuring alternating voltage in a conductor under test using a first set of capacitive voltage sensors 32a-f mounted on an electrically insulating support member. The sensors are disposed on the support member at spaced intervals a... | 07/08/2008 |
| 7372278 | Electric potential measuring apparatus electrostatic capacitance measuring apparatus, electric potential measuring method, electrostatic capacitance measuring method, and image forming apparatus An electric potential measuring apparatus includes a detecting electrode, a modulator for changing an electrostatic capacitance between a measurement object and the detecting electrode by mechanical vibration, a charge detector for detecting the amount of charges el... | 05/13/2008 |
| 7372438 | Electroluminescent display An electroluminescent display includes: a pixel region including devices arranged therein and adapted to emit light in response to a data signal; a scan driver adapted to supply a switching signal to a gate electrode of a first switching device; a data driver adapte... | 05/13/2008 |
| 7367692 | Light bulb having surfaces for reflecting light produced by electronic light generating sources The present light bulb uses electronic light generating sources and serves as a replacement for incandescent lamps or other lamps or so-called “light bulbs.” The light bulb is comprised of a plurality of individual light sources, such as light emitting diodes (L... | 05/06/2008 |
| 7358749 | Method, apparatus, and program for measuring an electromagnetic field and medium storing the program Provided is a method, apparatus and program for calculating an electric-field vector that allows for grasping the intensity, direction and phase of electric field on a scanning plane for an appliance, and a medium storing the program. An electric-field vector at an ... | 04/15/2008 |
| 7352929 | Rotary joint for data and power transfer A rotary joint is disclosed. The rotary joint comprise a power transfer interface for transferring power between a first portion having a first magnetic core and a second portion having a second magnetic core and rotatable relative to the first portion. The rotary j... | 04/01/2008 |
| 7336193 | Device for monitoring the leakage current of a surge arrester A device for monitoring a leakage current of a surge arrester has a measuring element for detecting a leakage current in a leakage current circuit. A filter assembly filters the leakage current in order to extract a third harmonic oscillation which is evaluated by a... | 02/26/2008 |
| 7330697 | Installation technique for a multiple input multiple output (MIMO) wireless communications systems Techniques for facilitating and reducing the costs associated with the installation of a wireless broadband communications system. In one mode of operation, the system employs a first transceiver to identify n channels having the n lowest levels of noise and interfe... | 02/12/2008 |
| 7330033 | Noncontact sensor A noncontact voltage sensor is housed in a container comprising a container body having an opening on one side and an insulation cover body for sealing the opening. A plate type electrode insulated from a ground is housed in the container. The cover body side is opp... | 02/12/2008 |
| 7327271 | Portable weather detector and alert system A portable weather detection and alarm device includes an electromagnetic signal receiver that receives digital time signals and atmospheric phenomenon signals. A processor connected to the electromagnetic signal receiver processes the atmospheric phenomenon signals... | 02/05/2008 |
| 7321976 | Information processing apparatus, power supply control method for plural information processing apparatuses, and storage medium therefore A representative computer requests performing a power-down process to other computer and notifies each of other computers of a next power-up date and time each time a power-down date and time comes, and has each power supply control device to enter the date and time... | 01/22/2008 |
| 7317319 | Measuring method for electromagnetic field intensity and apparatus therefor, measuring method for electromagnetic field intensity distribution and apparatus therefor, measuring method for current and voltage distributions and apparatus therefor Intensities of electric and magnetic fields are measured by locating a conductor and reference conductor in the electromagnetic field so the conductor and reference conductor simultaneously output plural currents that are respectively simultaneously measured in diff... | 01/08/2008 |
| 7317308 | System and method for measuring electric current in a pipeline A system for measuring a voltage differential in a current-carrying pipe using a propulsion vehicle for conveying the system inside the pipe. The system includes a first contact for maintaining electrical contact with the pipe as the vehicle moves through the pipe, ... | 01/08/2008 |
| 7315790 | System, and method for quantifying voltage anomalies A system and method of quantifying voltage anomalies may be used to quantify low frequency voltage transients such as the type caused by power factor correction (PFC) or similar events. The system and method of quantifying voltage anomalies receives sampled voltage ... | 01/01/2008 |
| 7304289 | Intensity detector circuitry having plural gain elements in a cascade with plural threshold values An analog to digital converter and related systems. ... | 12/04/2007 |
| 7292053 | High-voltage measuring device The present invention provides a high-voltage measuring device capable of providing sufficient electric isolation between resistors and between resistors and a voltage measurement circuit without necessity of enlarging a size of a substrate for carry thereon the cir... | 11/06/2007 |
| 7286912 | Method and apparatus for avoidance of power lines or trip wires by fixed and rotary winged aircraft An E-field sensing system is provided to detect the presence of obstacles, including wires, power lines or trip wires, as well as towers, guy wires, buildings and elevated terrain, in which a variation or tilt of the iso-potential electrostatic field adjacent the ob... | 10/23/2007 |
| 7277806 | Method for removing air wave effect from offshore frequency domain controlled-source electromagnetic data A method for removing the air wave effect from offshore frequency domain controlled source electromagnetic survey data. The region of interest is modeled with (111) and without (113) a top air layer. The electromagnetic field due to the source is compu... | 10/02/2007 |
| 7271576 | Hand held antenna/network impedance analyzer A handheld portable battery powered digital antenna and/or network analyzer which derives complex impedance values at a given frequency includes an internal direct digital synthesis generator and provides software-defined multiple operating modes and real time graph... | 09/18/2007 |
