Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8076950 | Method and apparatus for measuring the water conductivity and water volume fraction of a multiphase mixture containing water A method for determining the water conductivity and water volume fraction of a multi-component mixture of water and at least one additional liquid or gas in a pipe, the method comprising the following steps: a. electromagnetic phase measurements at least two measure... | 12/13/2011 |
| 8013619 | System and method for performing a continuity test on a lightning conduction system of a wind turbine A system and method for performing a continuity test on a lightning conduction system of a wind turbine are disclosed. The system generally includes a testing device having a blade ring configured to be positioned around at least a portion of an outer perimeter of a... | 09/06/2011 |
| 7795883 | Grid sensor A grid sensor including grids of electrode wires for measuring the electroconductivity of flow medium in the cross-section of a pipeline is particularly suitable for applications where the flow medium flows at high pressure and high temperatures. Each of the electro... | 09/14/2010 |
| 7696765 | System and method for measuring a cable resistance in a Power over Ethernet application A system and method for measuring a cable resistance in a power over Ethernet (PoE) application. A short circuit module in a powered device is designed to produce a short circuit effect upon receipt of a cable resistance detection voltage. The cable resistance detec... | 04/13/2010 |
| 7663384 | Method and apparatus for measuring metallic area-specific resistance A simple method and apparatus for measuring the low area specific resistance of a metal plate, particularly in high temperature ( | 02/16/2010 |
| 7391224 | Sensor arrangement The invention relates to planar sensor arrangements, in particular seat mat sensors, for recognition of seat occupancy in a motor vehicle, comprising several pressure sensitive sensor elements, arranged in a planar distribution, the electrical properties of which ar... | 06/24/2008 |
| 7362109 | Gem tester using electrical photoconductivity Diamond look-alikes like cubic zirconium, moissanite and other synthetic stones, are distinguishable from nature diamonds based on their thermal and/or electrical conductivities. Germ testers that are on the market are capable of evaluating these two parameters as i... | 04/22/2008 |
| 7318338 | Measuring device for measuring aerosol The invention relates to a measuring device for measuring aerosols, which measuring device comprises detection means (13), means (41) for conveying a signal from the detection means (13), a first insulation (43), a second insulation (4... | 01/15/2008 |
| 7291310 | Microsystem for determining clotting time of blood and low-cost, single-use device for use therein A microsystem for determining clotting time of blood and a low-cost, single-use device for use therein are provided wherein the device has no moving parts or expensive optical sensors or magnets. The device includes a microfluidic channel and a microsensor at least ... | 11/06/2007 |
| 7218892 | Passive repeater/terminator A passive terminator between a plurality of nodes includes a first voltage divider configured to passively set a differential voltage level between a first voltage level and a second voltage level. The first voltage divider has a Thevenin resistance and is electrica... | 05/15/2007 |
| 7193179 | Channeled under floor heating element A channeled under floor heating element incorporating channeled areas for accepting heat and sensor wires. The inventive channeled under floor heating element includes an arrangement of seam structures defining channels housing substantially discrete elongate heatin... | 03/20/2007 |
| 7193191 | Under floor heating element An under floor heating element incorporating a scrim having one or more pairs of heating and/or sensor wires arranged in a continuous pattern such that pair members are disposed in crossing relation to one another. The pair members may be cut and joined to establish... | 03/20/2007 |
| 7189944 | Warming mattress and mattress pad A warming mattress and mattress pad incorporating an insert layer or sheet with a scrim having one or more pairs of heating and/or sensor wires arranged in a continuous pattern such that pair members are disposed in crossing relation to one another. The pair members... | 03/13/2007 |
| 7187160 | Systems and methods for measuring an RMS voltage An embodiment of a method for measuring an RMS voltage of an arbitrary time-varying waveform includes: a) coupling said arbitrary time-varying waveform to said thermally sensitive device; b) decoupling said arbitrary time-varying waveform from said thermally sensiti... | 03/06/2007 |
| 7180032 | Channeled warming mattress and mattress pad A warming mattress and mattress pad incorporating channeled areas for accepting heat and sensor wires. The inventive mattress and mattress pad includes an arrangement of seam structures defining channels housing substantially discrete elongate heating and sensing el... | 02/20/2007 |
| 7151062 | Thermal textile A textile made at least in part with conductive yarns for the purpose of generating heat from an electrical power source. The textile has conducting yarns, or “heaters”, with conductivity and spacing tailored to the electrical source to be used and the heat to b... | 12/19/2006 |
| 7138612 | Electrical connection of flexible conductive strands in a flexible body A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 11/21/2006 |
| 7130780 | Method and instrument for electronically recording and imaging fluid washover via measuring characteristics of the fluid at multiple locations simultaneously An array of electrically isolated electrode pairs in combination with a specially configured processor, e.g., a personal computer, is employed to obtain a continuous real-time acquisition, processing, mapping and visualization of fluid washover. In a specific applic... | 10/31/2006 |
| 7109721 | Method and electronic circuit for regenerating an electrical contact A method and an electronic circuit for regenerating an electrical contact are provided in order to remedy the problem of electrical contacts becoming highly resistive over time. Electrical contacts become highly resistive over time, particularly when the contacts ar... | 09/19/2006 |
| 7104147 | System and method for measuring electric current in a pipeline A system and method for measuring a voltage differential in a current-carrying pipe using a propulsion vehicle. The system may be adapted for use with a pipeline pig or other propulsion device, which is configured to determine the electric current in a pipeline with... | 09/12/2006 |
| 7068054 | Real-time carbon sensor for measuring concentration profiles in carburized steel An alloy solute sensor probe, measurement system and measurement method are disclosed for directly measuring solute concentration profiles in conductive material components at elevated processing temperatures. The disclosed device and method permit direct, real-time... | 06/27/2006 |
| 7064299 | Electrical connection of flexible conductive strands in a flexible body A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 06/20/2006 |
| 7049557 | Regulated flexible heater A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 05/23/2006 |
| 7041153 | Method of measuring floating dusts In a method of measuring particles floating in an atmosphere, the atmosphere containing the particles is sucked into a container, ions are generated from a discharge electrode disposed in the container to charge the particles with the ions. A dust-collecting electro... | 05/09/2006 |
| 7038170 | Channeled warming blanket A warming blanket incorporating channeled areas for accepting heat and sensor wires. The inventive blanket includes an arrangement of seam structures defining channels housing substantially discrete elongate heating and sensing elements arranged in a substantially s... | 05/02/2006 |
| 7034251 | Warming blanket A warming blanket incorporating an insert layer or sheet with a scrim having one or more pairs of heating and/or sensor wires arranged in a continuous pattern such that pair members are disposed in crossing relation to one another. The pair members may be cut and jo... | 04/25/2006 |
| 7021122 | Device for the determination of blood clotting by capacitance or resistance A sensor device (10) and a method for measuring a viscosity of a sample of a liquid. The sensor features a chamber (12) for receiving the sample of the liquid, two electrodes (18) disposed either on the surfaces of the chamber, but possibly isol... | 04/04/2006 |
| 7005857 | Device for measuring blood coagulation and method thereof A device and method for measuring clotting times in a fluid, typically blood, within a microchannel, with the onset of clotting being determined by measurement of the rate of change, or the value, of capacitance or impedance between two electrodes situated on either... | 02/28/2006 |
| 6979806 | Regulated flexible heater A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 12/27/2005 |
| 6923848 | Collecting apparatus of floating dusts in atmosphere A collecting device for collecting particles floating in the atmosphere includes a collecting container; a pump for sucking the atmosphere into the collecting container; a discharge electrode disposed in the collecting container for generating single polarity ions t... | 08/02/2005 |
| 6865494 | Method and apparatus for noise tomography The subject invention pertains to an imaging technique and apparatus which can utilize an array of RF probes to measure the non-resonant thermal noise which is produced within a sample, such as a body, and produce a non-resonant thermal noise correlation. The detect... | 03/08/2005 |
| 6809524 | Testing of conducting paths using a high speed I/O test package A method and apparatus for testing parasitic effects on conducting paths in high-speed systems using a test package which allows for very accurate measurements of the parasitic effects to be taken. The test package is designed to be nearly identical to the actual IC... | 10/26/2004 |
| 6664776 | Method and system for voltammetric characterization of a liquid sample Parallel measurements on a plurality of working electrodes E1-E4 during the same pulse-sequence permits voltammetric characterization by, during each cycle of a predetermined pulse-sequence, performing a predetermined number of measurement procedures, eac... | 12/16/2003 |
| 6580280 | Multilayered gas sensor and a related gas concentration detecting system An exhaust gas side electrode is provided on one surface of a solid electrolytic substrate. A reference gas side electrode is provided on an opposite surface of the solid electrolytic substrate so as to be exposed to a reference gas stored in a reference ... | 06/17/2003 |
| 6483323 | Projectile with variable target transition detection capability and method therefor A projectile fuze detects transitions between target layers by an electronic antenna radiating laterally into the target material and coupled to a pullable oscillator whose frequency shifts as the target material changes while the projectile penetrates. A... | 11/19/2002 |
| 6417679 | Conductivity sensor The invention relates to a conductivity sensor with a substantially circular cylindrical casing of synthetic material and with metal measuring electrodes in its planar substantially circular front wall, of which at least two voltage electrodes and at leas... | 07/09/2002 |
| 6400159 | Orientation sensor especially suitable for use in an underground boring device An orientation sensor especially suitable for use in an underground device is disclosed herein. This orientation sensor includes a sensor housing defining a closed internal chamber, an arrangement of electrically conductive members in a predetermined posi... | 06/04/2002 |
| 6328934 | Device for detection of when a test probe gets into contact with a liquid surface A device for detection of when at test probe of conducting material contacts a liquid surface includes a test probe of conducting material. The test probe is electrically screened by an insulated screen, with a part of the test probe projecting in front o... | 12/11/2001 |
| 6314373 | Grid sensor for determining the conductivity distribution in flow media and process for generating measurement signals A measurement device is disclosed for measuring the conductivity distribution in liquids or multiple phase media flowing in any direction. A grid sensor has electrodes shaped as parallel electroconductive grid bars or wires located in two or three planes ... | 11/06/2001 |
| 6265884 | Electrical conductivity gem tester It has been learned that moissanite and other synthetic stones, including synthetic moissanite and synthetic diamond, are distinguishable from natural diamonds based on differing electrical conductivities. The present invention, therefore, provides an app... | 07/24/2001 |
