Class / Patent application number | Description | Number of patent applications / Date published |
324722000 | Device or apparatus determines conductivity effects | 37 |
20080278184 | Grid Sensor - The invention relates to a grid sensor, including grids of electrode wires, for measuring the electroconductivity of a flow medium in the cross-section of a pipeline. The invention can be especially applied where the flow medium flows at a high pressure and at high temperatures. According to the invention, each electrode wire is mechanically connected to a spring on one side by means of an insulating bead, the spring being arranged in a hole in the sensor body having an axis which is oriented in the tensioning direction of the wire, and fixed to the sensor body in this position. Each electrode wire on the side opposing the spring is covered with an insulating tube arranged in an outwardly guided channel in the sensor body. The insulating tube ends inside the channel, in a cavity filled with a sealing material. Neither the insulating bead nor the insulating tube are located in the cross-section wherein the measurement is to be carried out. | 11-13-2008 |
20090051375 | Method and apparatus for measuring metallic area-specific resistance - To measure the area specific resistance of a metallic surface, silver paste is applied on a first surface of a metal plate. The silver paste is dried and molded into a desired shape; then it is sintered at a temperature close to the melting point of silver and turned into a silver foil, forming non-porous contact with the first surface. The second surface (reverse surface) is polished. First and second wires are connected to the silver foil by a silver drop. Third and fourth wires are spot welded to the second surface of the metal plate within the covered area right under the silver foil. The first and third wires are connected to the positive and negative electrodes of a power supply, and the second and fourth wires to the positive and negative electrodes of a voltmeter. A current I is provided. The temperature of the metal plate is first raised to a suitable point not close to the melting point of silver for sintering the silver drop attaching the first and second wires. Then the temperature is adjusted and retained at a point for measurement for a period of time. The voltage V is read. The area A of the silver foil is determined by digital optical instrument and software. Thus, the area specific resistance of the first surface of the metal plate can be calculated as V/(I/A). | 02-26-2009 |
20090058436 | 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 detection voltage can be designed to be greater than a voltage for detection or classification and less than a voltage for powering of the powered device. The measurement of the current at a time when a short circuit effect is produced at the powered device enables a calculation of the actual resistance of the cable on a given PoE port. | 03-05-2009 |
20090085588 | Method and Apparatus for Detecting Molecules - A molecular sensor includes a membrane layer having parallel pores extending through the membrane layer and incorporating therein probe molecules that bind with corresponding target molecules when present in the pores, electrodes, and an ionic solution in contact with the electrodes and the pores, wherein the electrodes are energized to induce an electrical current in the solution through the pores, wherein the electrical current induces an electrical parameter in the electrodes that is indicative of a through-pore electrical impedance of the pores, wherein the through-pore electrical impedance is increased when there is probe-to-target molecule binding in the pores relative to when there is an absence of such binding. | 04-02-2009 |
20090091340 | Apparatus for Measuring Dielectric Properties of Parts - A chamber formed from an electrically conductive material is connected to a ground potential. A hot electrode formed from an electrically conductive material is disposed within the chamber in a substantially horizontal orientation and is physically separated from the chamber. The hot electrode includes a top surface defined to support a part to be measured. A radiofrequency (RF) transmission rod is connected to extend from a bottom surface of the hot electrode through an opening in a bottom of the chamber and be physically separated from the chamber. The RF transmission rod is defined to transmit RF power from a conductor plate in an electrical components housing to the hot electrode. An upper electrode formed from an electrically conductive material is disposed within the chamber in a substantially horizontal orientation. The upper electrode is electrically connected to the chamber and is defined to be movable in a vertical direction. | 04-09-2009 |
20090091341 | Electrode for Use in Measuring Dielectric Properties of Parts - A plate of substantially uniform thickness is formed from an electrically conductive material. The plate has a top surface defined to support a part to be measured. The plate has a bottom surface defined to be connected to a radiofrequency (RF) transmission rod such that RF power can be transmitted through the RF transmission rod to the plate. The plate is defined to have a number of holes cut vertically through the plate at a corresponding number of locations that underlie embedded conductive material items in the part to be measured when the part is positioned on the top surface of the plate. | 04-09-2009 |
20090153157 | RESISTANCE MEASUREMENTS OF A HELICAL COIL - Test methods and components are disclosed for testing resistances of helical coils formed in magnetic recording heads. Helical coils in magnetic recording heads include a bottom coil structure, a top coil structure, and connecting structures that electrically connect the top and bottom coil structures. A test component is fabricated on the wafer along with the magnetic recording heads. The test component includes a bottom coil structure connected in series, and includes a top coil structure connected in series which is electrically disconnected from the bottom coil structure. Resistances of the top and bottom coil structures are measured in the test component. A total resistance of a helical coil is also measured. The resistance of the connecting structures in the helical coil may then be determined based on the resistance of the bottom coil structure, the resistance of the top coil structure, and the total resistance of the helical coil. | 06-18-2009 |
20090289643 | COORDINATE DETECTING DEVICE AND METHOD - A coordinate detecting device includes a resistive film disposed on a quadrangular substrate; a power source for applying a voltage to the resistive film; four electrodes connected to the power source and disposed in four corners of the resistive film; four switches each disposed between the power source and a corresponding electrode; four ammeters for measuring currents flowing through corresponding electrodes; and a grounded conductive film for detecting coordinates of a contact point on the resistive film when the conductive film is brought in contact with the resistive film. The voltage is applied sequentially to the electrodes by opening and closing the switches. When the conductive film is brought in contact with the resistive film, the ammeters sequentially measure currents flowing through the corresponding electrodes. The coordinates of the contact point are detected based on positions of the electrodes and resistances obtained using the measured currents. | 11-26-2009 |
20100045312 | Shaped-Seal, Sealing Arrangement and Process Sensor Having Such a Sealing Arrangement - A shaped-seal for sealing an annular gap between an outer peripheral wall and an inner peripheral wall against a medium, including: an elastic, radially clampable, annular sealing element having an annular, radially outer, sealing surface for contacting the outer peripheral wall, an annular, radially inner, sealing surface for contacting the inner peripheral wall, an annular, media-side, ceiling surface, which extends between the radially outer, sealing surface and the radially inner, sealing surface, an annular base surface, which extends on the side facing away from the ceiling surface, between the outer sealing surface and the inner sealing surface, and at least one annular cavity in the base surface for accommodating an anchoring ring, wherein the cavity has at least one undercut. | 02-25-2010 |
20100085068 | SENSOR DEVICE FOR DETECTING ELECTRICAL PROPERTIES OF A FLUID - The sensor device for detecting electrical properties of a fluid under high pressure has: a pressure-tight housing, whose cavity is connectable to a high pressure line via an opening, a sensor for electrical properties, which is situated in the cavity, glass feedthroughs, which electrically connect the contacts on an external surface of the housing to the sensor. | 04-08-2010 |
20100271055 | Assembly for Electrical Conductivity Measurements in the Piston Cylinder Device - An assembly apparatus for measurement of electrical conductivity or other properties of a sample in a piston cylinder device wherein pressure and heat are applied to the sample by the piston cylinder device. The assembly apparatus includes a body, a first electrode in the body, the first electrode operatively connected to the sample, a first electrical conductor connected to the first electrode, a washer constructed of a hard conducting material, the washer surrounding the first electrical conductor in the body, a second electrode in the body, the second electrode operatively connected to the sample, and a second electrical conductor connected to the second electrode. | 10-28-2010 |
20110084716 | DIAGNOSTIC METHOD FOR OIL-FILLED ELECTRICAL DEVICE, DIAGNOSTIC DEVICE FOR IMPLEMENTING THE DIAGNOSTIC METHOD, AND OIL-FILLED ELECTRICAL DEVICE PROVIDED WITH THE DIAGNOSTIC DEVICE - An object of the invention is to provide a diagnostic method for an oil-filled electrical device that considers a temperature distribution in the oil-filled electrical device and enables accurate diagnosis to be conducted even when the method is applied to diagnosis of an actually operating device, and further provide a method with which such diagnosis of an oil-filled electrical device can be conducted from a component analysis value of an insulating oil in the oil-filled electrical device. The invention is a diagnostic method for an oil-filled electrical device including in an insulating oil a metal part wrapped with insulating paper, and determines that a time when a surface resistivity of a maximum precipitation site where metal sulfide is most precipitated on the insulating paper reaches a preset surface resistivity management value is a time of occurrence of an abnormality. | 04-14-2011 |
20110133762 | CARTRIDGE DEVICE FOR BLOOD ANALYSIS - A cartridge device having a receiving portion for receiving a blood sample and a jack portion for receiving a plug; a stirring device for circulating the blood sample within the receiving portion; and an electrode holder having at least one incorporated electrode wire pair; wherein the electrode holder is attachable to the cell such that one end of the at least one electrode wire pair forms a sensor unit for measuring the electrical impedance between the two electrode wires of the at least one electrode wire pair within the blood sample and that the opposite end of the at least one electrode wire pair forms a plug portion being connectable directly to the plug for an electrical connection of the sensor unit to an analyser. | 06-09-2011 |
20110140724 | 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 rotor blade of the wind turbine. A carriage may be attached to the testing device and a cable may be attached to the carriage. The cable may generally extend between a first anchor point and a second anchor point, wherein the anchor points are spaced apart from one another such that a lightning receptor of the lightning conduction system is disposed between the anchor points. Additionally, the cable may be coupled between the anchor points such that, as the cable is displaced, the testing device is moved to a position at which an electrically conductive member of the testing device contacts the lightning receptor. | 06-16-2011 |
20110181307 | Nanoscale multiplexer - In one embodiment of the present invention, a microscale or sub-microscale signal line, interconnected with one set of parallel nanowires of a nanowire crossbar, serves as a multiplexer. The multiplexer is used to detect the conductivity state of a nanowire junction within the nanowire crossbar. In one method embodiment of the present invention, a first signal is output to the two nanowires interconnected by the nanowire junction, while a second signal is output to the remaining nanowires of the nanowire crossbar. Then, the second signal is output to the two nanowires interconnected by the nanowire junction, while the first signal is output to the remaining nanowires of the nanowire crossbar. The resulting signal detected on the multiplexer is reflective of the conductivity state of the nanowire junction. | 07-28-2011 |
20110304347 | RF Non-Contact Thin Film Measurement Using Two Port Waveguide - The system disclosed herein for non-destructively testing a resistive film includes first and second waveguides that are gapped apart from each other. The resistive film is disposed between the first and second waveguides and tested. The film is then advanced and re-tested by the first and second waveguides. The waveguides do not contact the film during testing or while the film is being advanced to its next position. Accordingly, the system provides a non-destructive method of testing the sheet resistance of a film in an accurate manner. | 12-15-2011 |
20120007620 | GROUNDING ASSEMBLY WITH INSULATED CONDUCTOR - An electrical grounding device can have a grounding plate and an insulated connecting wire. Having an insulated connecting wire reduces or prevents corrosion of the connecting wire by the surrounding underground soil. A grounding assembly is also provided and can have such a grounding device. The grounding assembly can include additional grounding devices which can also have an insulated connecting wire. A method of measuring resistance to ground of a grounding device of a grounding assembly having a multiple grounding devices and one or more bonding wires routed through a conduit is also disclosed. Having all but one of the connecting wires and bonding wires insulated or insulating all the connecting wires of the grounding devices of the grounding assembly allows measurement of resistance to ground by electrically disconnecting all but the connecting wire of the grounding device to be tested, contacting one terminal of an ohm meter to the connecting wire of the grounding device to be tested and contacting the other terminal of the ohm meter to the earth or ground, and reading the ohm meter. | 01-12-2012 |
20120019271 | DEVICE FOR DETECTING PHYSICAL STATE VARIABLES OF A MEDIUM - In the case of a device for detecting physical state variables of a medium, such as pressure or temperature, for example, of a liquid, comprising at least one measuring sensor, which is connected to at least one electrical conductor so as to transmit signals, wherein at least one section of the conductor, which encompasses the sensor, is embedded in a casting compound, the casting compound is embodied, according to the invention, from at least one casting core and a casting jacket, which encloses the casting core, and provision is made in the casting compound for at least one recess for a media-conducting access to a contact surface of the sensor. | 01-26-2012 |
20130099808 | FLUID RESISTIVITY SENSOR - Various embodiments include apparatus and methods of determining resistivity of fluids downhole in a well. The apparatus and methods may include using a sensor that employs a focused electric dipole as a transmitter and a uses a receiver to detect the electric current strength in the fluid under measurement responsive to the transmitter. Additional apparatus, systems, and methods are disclosed. | 04-25-2013 |
20140184251 | Wide Dynamic Range Conductivity Measurements In Water - A conductivity meter for measuring the conductivity of a fluid is provided. The conductivity meter has a cell circuit and a control unit circuit. The cell circuit has a square wave drive amp, a cell, and a trans-impedance amplifier. The fluid flows through the cell. The control unit circuit and the square wave drive amp are configured to apply a square wave pulse train having a voltage to the fluid of the cell, thereby inducing a flow of current through the fluid in the cell. The cell circuit trans-impedance amplifier and the control unit circuit are configured to obtain a plurality of measurements of current flowing through the fluid in the cell and estimate a raw conductivity of the fluid in the cell using the current flow measurements. A method for measuring the conductivity of a fluid is also provided. | 07-03-2014 |
20160152352 | LINING/FAIRING PANEL AND METHOD FOR MEASURING THE ELECTRICAL BONDING RESISTANCE OF A LINING/FAIRING PANEL | 06-02-2016 |
324723000 | Potentiometer | 1 |
20110156728 | ROTATION ANGLE SENSING ASSEMBLY INCLUDING ATTACHING STRUCTURE, VARIABLE VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINE USING THE ATTACHING STRUCTURE, AND VEHICLE INCORPORATING THE SAME - In a rotation angle sensor attaching structure for detecting rotation of a rotational angle detection object shaft through a reduction gear, an outer race of a bearing is force fitted in and secured to a central portion of the reduction gear, and an inner race of the bearing is secured to a supporting wall by a supporting bolt. A sensor-connecting element of a rotation angle sensor, which extends across a head portion of the supporting bolt, is secured integrally to an outer side face of the reduction gear. Such arrangement achieves a minimal size of the rotation angle sensor attaching structure. | 06-30-2011 |
324724000 | Using a probe type structure | 15 |
20090051376 | METHOD FOR INFLUENCING SOOT DEPOSITS ON SENSORS - A method is described for controlling the soot deposition on sensors. A sensor element is provided, which includes a first electrode and a second electrode. Different measuring voltages U | 02-26-2009 |
20090121730 | CONNECTOR FOR MEASURING ELECTRICAL RESISTANCE, AND APPARATUS AND METHOD FOR MEASURING ELECTRICAL RESISTANCE OF CIRCUIT BOARD - Disclosed are a connector for measurement of electric resistance, by which necessary electrical connection is surely achieved even when a circuit board to be inspected is large in area and has a great number of small-sized electrodes to be inspected, and measurement is surely performed with high precision, and which can be produced at a low cost, and an electric resistance-measuring apparatus and an electric resistance-measuring method for circuit boards, which make use of this connector. The connector for measurement of electric resistance has a first electrode sheet, an anisotropically conductive elastomer sheet arranged on a back surface of the first electrode sheet and having through-holes formed corresponding to the electrodes to be inspected, and a second electrode sheet arranged on a back surface of the anisotropically conductive elastomer sheet. The first electrode sheet has an insulating sheet having through-holes formed corresponding to the electrodes to be inspected, a plurality of ring-like electrodes each formed on a front surface of the insulating sheet so as to surround the through-hole, and junction electrodes formed on a back surface of the insulating sheet, and the second electrode sheet has a plurality of core electrodes for inspection arranged corresponding to the electrodes to be inspected, and a plurality of core electrodes for connection arranged corresponding to the junction electrodes. | 05-14-2009 |
20090160465 | DETERMINATION OF EQUIVALENT SERIES RESISTANCE - A determination of an equivalent series resistance (ESR) effect for high frequency filtering performance of a filtered feed-through assembly is described. A low frequency signal is introduced to a filtered feed-through assembly. ESR limit of the filtered feed-through is determined based on the low frequency signal. | 06-25-2009 |
20090243637 | MEASURING APPARATUS HAVING NANOTUBE PROBE - An object of the present invention is to provide a measuring apparatus such as a conduction characteristics evaluation apparatus, a probe microscope, etc. having a nanotube probe, wherein the measuring apparatus is succeeded in reducing the electrical resistance of the carbon nanotube as well as the electrical resistance between the carbon nanotube and a metal substrate to improve electrical conduction characteristics of the nanotube probe and attain a uniform diameter, thus improving the measurement accuracy. | 10-01-2009 |
20090302873 | System for electrochemically measuring an analyte in a sample material - Strips, particularly test strips and adapters for test strips, for use in meters for the electrochemical measurement of analyte in a sample material and in particular the glucose concentration of a sample of blood. The strips comprise a plurality of working connectors, for interfacing with the meter, coupled to one or more working electrodes. The strips are of particular use in adapting multi-input meters for single input use. | 12-10-2009 |
20100171518 | Method and apparatus for non-destructive detection of defects in composite laminate structures - The present invention provides a probe apparatus and method as described below for use as a non-destructive testing (NDT) device to detect and locate structural flaws in a composite laminate. In preferred embodiments, the method includes measuring effective thermal conductivity (Ke) of the laminate using one contact surface, non-invasively. The device is preferably portable and battery-operated. The thermal conductivity method on which the device is based is much simpler to use than the known devices for NDT and allows the utilization of a direct correlation between thermal conductivity and mechanical strength in the case of polymer composites. The device may also be used for process control in manufacturing and monitoring materials in service. | 07-08-2010 |
20100231247 | ELECTRICAL SPECIFIC RESISTIVITY PROBING ROBOT - The present invention relates to an electrical specific resistivity probing robot, and it is directed to automatically measuring a three-dimensional electrical specific resistivity structure of an underground shallow region by installing a plurality of probing electrodes at regular intervals along a robot-moving caterpillar to measure difference of potentials of the electrodes at a ground plane. The electrical specific resistivity probing robot of the present invention includes a frame ( | 09-16-2010 |
20100283492 | AUTOMATED ELECTRICAL STABILITY METER - A method for automatically measuring a property of a fluid associated with a drilling application, including obtaining a sample of the fluid, wherein the sample of the fluid is obtained by directing the fluid through an electrode probe assembly comprising an electrode probe and depositing the fluid in a probe gap between electrodes of the electrode probe, ramping up a voltage applied to the electrodes of the electrode probe until a threshold current is obtained, recording the breakdown voltage at the threshold current value, and using the breakdown voltage to compute the property of the sample of the fluid. | 11-11-2010 |
20110309848 | CONDUCTIVE CONDUCTIVITY SENSOR - In a conductive conductivity sensor having a probe, which is immersible in a measured medium and which comprises at least two electrodes made of a first, electrically conductive material and at least one probe body made of a second, electrically non-conductive material, the electrodes are at least partially embedded in the probe body and insulated from one another by the probe body, wherein the electrodes and the probe body are embodied as a composite workpiece. There especially exists between the first material and the second material in at least one section of a material transition between the first and the second material a secure bond, especially a bond based on intermolecular interactions or chemical bonds. | 12-22-2011 |
20120133379 | MECHANISMS FOR RESISTIVITY MEASUREMENT OF BUMP STRUCTURES - The embodiments described above provide mechanisms for bump resistivity measurement. By using designated bumps on one or more corners of dies, the resistivity of bumps may be measured without damaging devices and without a customized probing card. In addition, bump resistivity may be collected across the entire wafer. The collected resistivity data may be used to monitor the stability and/or health of processes used to form bumps and their underlying layers. | 05-31-2012 |
20120194205 | RAPID SCREENING BUFFER LAYERS IN PHOTOVOLTAICS - An apparatus and method of testing electrical impedance of a multiplicity of regions of a photovoltaic surface includes providing a multi-tipped impedance sensor with a multiplicity of spaced apart impedance probes separated by an insulating material, wherein each impedance probe includes a first end adapted for contact with a photovoltaic surface and a second end in operable communication with an impedance measuring device. The multi-tipped impedance sensor is used to contact the photovoltaic surface and electrical impedance of the photovoltaic material is measured between individual first ends of the probes to characterize the quality of the photovoltaic surface. | 08-02-2012 |
20130021047 | Conductive Conductivity Sensor - A conductive conductivity sensor, comprising: a probe immersible in a measured medium. The probe has an inner space, which is connected to an environment of the probe via at least one opening leading out from the inner space and in which are arranged two electrodes, which are supplied with an alternating voltage during measurement operation and which have inner surfaces facing into the inner space and outwardly facing outer surfaces covered by insulation, wherein the inner surfaces have edge surfaces adjoining the openings. Measuring characteristics of the conductivity sensor have a smallest possible dependence on objects arranged in the vicinity of the conductivity sensor. At least the edge surfaces adjoining one of the openings have a surface geometry directing thereon beginning or ending, electric field lines in a direction facing away from such opening and into the inner space. | 01-24-2013 |
20130141123 | PH-METER CAPABLE OF MEASURING CONDUCTIVITY AND DISSOLVED OXYGEN SIMULTANEOUSLY - A pH-meter capable of measuring conductivity and dissolved oxygen at the same time is composed of a gauge and three probes. Three power sources and three measuring circuits are mounted to the gauge. The detectors of the probes include a pH detector, a conductivity detector and a dissolved oxygen detector. Each of the probes is independently connected with the gauge via a transmission cable to be independently supplied with electricity and the signals of two probes are independently transmitted by electric insulation. Thus, the detecting elements can measure the pH value, conductivity, and dissolved oxygen at the same time with interference with one another. | 06-06-2013 |
20130169299 | POSITIONING DEVICE FOR TESTING RESISTANCE OF CAMERA MODULE - A positioning device includes a positioning mechanism, a contacting mechanism located in the positioning mechanism, and a connecting mechanism located adjacent to an end of the positioning mechanism. The positioning mechanism includes a receiving member, a positioning member received in the receiving member, and a cover rotatable connected to the receiving member. The receiving member defines two sliding grooves. The cover defines two driving grooves corresponding to the two sliding grooves, each of the two driving grooves forms a driving surface, and the sliding block includes a slanted surface corresponding to the driving surface. When the cover is rotated to cover the receiving member, the driving surface resists with the slanted surface to drive the sliding block to move towards the positioning groove until the first contacting member contacts one testing point of the camera module. | 07-04-2013 |
20150015282 | TESTING DEVICE FOR RESISTANCE VALUE - A testing device for testing resistance value includes a base, an operation pole, a sliding device, and a housing for enclosing the base. The base defines a hook receiving slot. A plurality of contact tabs is formed inside the hook receiving slot for contacting pins of the expansion card. A plurality of conductive tabs is formed on the base for being electrically coupled to the contact tabs. A ground terminal is electrically coupled to one of the conductive tabs coupling to the ground pins. The sliding device includes a resilient tab. The resilient tab includes a first end contacting one of the conductive tabs and a second end. The housing includes a connection portion for contacting the second end of the resilient tab and a test terminal electrically coupled to the connection portion. | 01-15-2015 |