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9041413 Electric leakage detection apparatus  
An electric leakage detection apparatus may quickly detect an electric leakage. An electric leakage detection apparatus includes a pulse generator that supplies a pulse to a coupling capacitor, a...
9033620 Leak detectable geomembrane liners for containment system and method of testing for leaks  
A geomembrane liner for a containment system including liner panels and connected by a seam at overlapped edges, with the top panel having a conductive lower surface which is non-conductive across...
8890553 Method of and apparatus for detecting cracks in piezoelectric element  
A method detects one or more cracks in a piezoelectric element interposed between a pair of electrodes and deforms according to a voltage applied thereto through the pair of electrodes. The method...
8829915 Leakage resistance detection device for an on-board high voltage device and leakage resistance detection method therefor  
The leakage resistance detection device includes a coupling capacitor having one terminal connected to an on-board high voltage device and another terminal connected to a repetitive signal output...
8823412 Device and method for inspection of a stator core of an electrical machine  
An automated EL CID inspection technique for the stator core of an electrical machine is provided. The inspection device includes a rail, a pickup coil and a coil support assembly. The coil...
8810259 Method of inspection of sealed capsules with a process of determination of the quality of the seal and related equipment for in-line inspection  
An exemplary embodiment of this invention relates to a method of inspection of a filled hard capsule sealed with a solvent sealing agent, including a process for determining the quality of the...
8786277 Environmental noise reduction for magnetometry  
A magnetic signal noise reduction and detection system has inputs configured to receive data from a first total field scalar magnetometer, data from a vector magnetometer, and data from a...
8766645 Method and device for tracking the degradation of insulators in a rotary machine  
A method for tracking the deterioration of the insulators in a rotating machine, a method for preventive maintenance of these machines using this tracking and devices using the tracking method is...
8736279 Electric leakage detection protective circuit with magnetic lock mechanism  
An electric leakage detection protective circuit comprises two normally closed switches. The live wire at the power output terminal is connected to the live wire output plug bush at the power...
8692560 Method for testing mask articles  
A method for testing a mask article includes the steps of electrically connecting the mask article to an electrical sensor, applying a bias voltage to a plurality of testing sites of the mask...
8604806 Method for testing mask articles  
A method for testing a mask article includes steps of electrically connecting the mask article to an electrical sensor, applying a bias voltage to a plurality of testing sites of the mask article...
8502544 Method for testing mask articles  
A method for testing a mask article includes the steps of electrically connecting the mask article to an electrical sensor, applying a bias voltage to a plurality of testing sites of the mask...
8456168 Systems and methods for testing the standoff capability of an overhead power transmission line  
An overhead power transmission line system includes detector circuitry to detect a flashover event on a power line conductor in response to test over voltage excitations applied to the power line...
8368406 Insulation measuring apparatus  
An insulation measuring apparatus having a measuring circuit including a first capacitor; a control unit that reads a voltage set on the first capacitor to decide an insulation state of a power...
8362784 Capacitor capacitance diagnosis device and electric power apparatus equipped with capacitor capacitance diagnosis device  
A capacitor capacitance diagnosis device includes a power supply which is for charging a capacitor, a discharge circuit which is connected to the capacitor in parallel to discharge energy of the...
8350516 Electric motor drive device and method of controlling the same  
A control device controls a switching operation of a switching element such that an AC voltage allowing an AC motor to output torque in accordance with a torque command value is applied to a coil...
8248080 Systems and methods for assessing standoff capabilities of in-service power line insulators  
An electrical power transmission system includes electrical insulators arranged to electrically isolate live power lines. Measurement devices are physically incorporated or integrated in the...
8242786 Method and system for partial discharge testing of an insulation component  
The disclosure relates to a method for partial discharge testing of an insulation component, wherein at least one X-ray pulse is applied to the insulation component, an AC voltage is applied to...
8232806 Insulation state detector  
An insulation state detector detects an insulation state with respect to a ground potential portion of a DC power source on the basis of a charging voltage of a flying capacitor. The insulation...
8198902 Insulation state detector  
An insulation state detector includes a capacitor, a measurement section measuring a charging voltage of the capacitor, a measuring circuit that connects the capacitor, which is insulated from a...
8174270 Systems and methods for assessing standoff capabilities of in-service power line insulators  
A high voltage power transmission system includes an insulator arranged to electrically isolate a live power transmission line and a testing device in physical contact with the insulator, The teat...
8040139 Fault detection method for detecting leakage paths between power sources and chassis  
A method of detecting a ground fault condition between a direct current power system and the chassis ground of an electric or hybrid-electric vehicle is provided. The method includes sequentially...
8030946 In-pipe coating integrity monitor for very long pipes  
Systems, methods and program products of instructions stored on a computer readable medium related to a tether free piggable inspection tool capable of detecting holidays and able to read and...
8008932 Component with a detection structure for mechanical damage  
A component made of electrically insulating material with a detection structure for mechanical damage such as cracks is disclosed. The detection structure is a conductor. The electrical properties...
7852089 Ground-fault detection system for vehicles with a high-voltage power net  
A ground-fault detection system and method for detecting loss of electrical isolation in a vehicle or other system that uses a high voltage (HV) power net. The loss of electrical isolation may be...
7847563 Test system  
A test system includes a front bezel of an electronic device and a test device. The front bezel includes a plurality of positions defined in the front bezel, a plurality of light emitting diodes...
7847560 Method to detect and locate a breach in vertical or horizontal intersections in a membrane of a roof  
A defect in a horizontal or vertical seam at the edge of a roof membrane is detected by applying a DC voltage between the roof deck a probe in the form of a flexible wetted sponge and wiping the...
7808250 Test method and apparatus for spark plug insulator  
There is provided a test method for detecting the presence or absence of a defect in a spark plug insulator, including a reference voltage determination process, a test area determination process,...
7768270 In-pipe coating integrity monitor for very long pipes  
Systems, methods and program products related to a tether free pigable inspection tool capable of detecting holidays and able to read and store non-conductive internal coating thickness values in...
7652481 Method and apparatus to detect and locate roof leaks  
A leak in a membrane on top of a horizontal roof deck is located by applying conductive wires on the membrane underneath the aggregate in a grid pattern. A measuring and switching circuit...
7602196 Method to detect and locate a breach in a roof membrane  
A defect in a roof membrane is detected by applying a DC voltage between the roof deck and a perimeter conductor and using a detection probe pair to provide a signal indicative of the differences...
7554336 Method for measuring the insulation resistance in an IT network  
A method for measuring the insulation resistance in an information technology (IT) network. The IT network has a DC voltage intermediate circuit and at least one self-commutated converter having...
7514951 Negative voltage noise-free circuit for multi-functional pad  
A circuit and a method are provided to produce a noise-free multi-input I/O pad for an integrated circuit chip. The circuit includes a normal mode internal node, which connects to normal mode...
7489140 Apparatus, method and system for spark testing an insulated cable  
Apparatus, methods, and systems improve spark testing of insulated cables. According to embodiments described herein, a spark tester includes a conductive housing having an entryway, an exit, and...
7467717 Failed roll condom removal apparatus  
An automatic failed roll condom detection and removal apparatus wherein failed roll condoms are rapidly removed from a testing mandrel such that shut down of the testing and handling equipment is...
7365507 Power control apparatus for motor  
A power control apparatus for a motor is disclosed. The power control apparatus includes: a moisture sensor for detecting moisture soaking into a housing including the motor; and a switching unit...
7327132 Testing procedure for evaluating diffusion and leakage currents in insulators  
A method for predicting long-term electrical insulation properties of composite materials in a moist environment. The method including the steps of providing a specimen, and testing the specimen...
7176694 Testing device and method of testing insulated handles used for servicing high voltage transmission lines  
A hot stick testing apparatus and method including a pair of generally ring-shaped electrodes spaced from one another at a predetermined distance. Each electrode has a central opening configured...
7171322 Algorithm for estimation of multiple faults on a transmission line or waveguide  
An algorithm is provided for a frequency domain reflectometer which takes into account both attenuation per unit length of transmission line and phase shift per unit length of transmission line in...
7075311 Insulation detecting device for non-grounded power source  
An insulation detecting device having a capacitor and a DC power source, insulated from a ground potential part. A voltage detecting unit, detects a voltage across the capacitor. A first switching...
7061253 Apparatus and method for field testing polymer insulators  
A system and method for testing polymer insulators is provided. One embodiment includes applying a voltage to a grading shield that is oriented about a top region of a polymer insulator and to a...
6984992 Condom testing apparatus  
A condom testing apparatus having a plurality of electrically conductive mandrels having condoms loaded thereon, a first set of condom-contacting electrode members, a second set of...
6924650 Device for generator diagnosis with built-in rotor  
In a device for the investigation of components of a generator which border on a machine air gap (29) between stator and rotor (22), with the rotor (22) built in, by means of at least one moveable...
6836125 Method and a device for testing a power module  
A method of testing a power module including a control gate, an emitter, a collector, at least one power component on a dielectric substrate and a diode connected in antiparallel with the power...
6825555 Hot plate  
An object of the present invention is to provide a hot plate which is superior in thermal conductivity, is superior in temperature-rising/dropping property, particularly in temperature-dropping...
6812716 Method and apparatus for testing an electrical component  
A process and an apparatus for measuring the impedance of a capacitive sample and thereby determining the leakage impedance and the loss angle. To suppress the effects of ambient power frequency...
6794885 Device for inspecting hermetically sealed packages  
While a sealed package (3) prepared by wrapping conductive contents (1) with an electric-insulation film (2) is being conveyed by two conveyors (4, 4), front and rear, a conductor (5) disposed on...
6774640 Test coupon pattern design to control multilayer saw singulated plastic ball grid array substrate mis-registration  
A new method is provided for evaluating the alignment of inner layers of interconnect layers. A test pattern is inserted within and as part of the process of creating a saw singulated plastic ball...
6768316 Laser cutting of laminates for electrical insulation testing  
A laminate comprising an insulation layer sandwiched between a pair of electrically conductive layers is prepared for electrical insulation testing by using a laser to remove a strip from at least...
6694268 Leakage inspection method for sealed container and apparatus for carrying out the method  
A leakage inspection method for a sealed container in which a liquid of a non-electrolyte is contained for judging whether a defect exists in the container, the method comprising the steps of...

Matches 1 - 50 out of 215 1 2 3 4 5 >