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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...
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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 at...
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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...
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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...
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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...
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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 to...
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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 to...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 )...
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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...
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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...
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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...
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6686748 |
Procedure arrangement and sensor for testing of the H-F tightness of the junction between two adjacent parts
Arrangement to test HF tightness of a junction between two adjacent parts including HF generator ( 4 ), HF line that guides the signal over junction ( 1 ), measuring device ( 10 ) as well as a...
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6657437 |
Method and system for performing time domain reflectometry contemporaneously with recurrent transmissions on computer network
A method for performing time domain reflectometry contemporaneously with recurrent transmissions, such as idle transmissions, on a computer network, such as a 100 BASE T protocol network is...
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6634216 |
Inspection method for sealed package
The invention provides an efficient inspection method for inspecting a hermetically sealed package for pinholes, in which when a hermetically sealed package whose contents such as electrically...
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6636031 |
Method and device for detecting pinholes in organic film on concrete surface
A technique for detecting whether or not a pinhole is present in an organic film on a concrete surface, by detecting the conductivity of the concrete in advance. In the bottom portion of a...
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6611149 |
Condom nipple testing apparatus
A nipple testing apparatus for testing the nipple end of condoms mounted onto a mandrel, the apparatus having an electrically conducted nipple-shaped cavity connected in electrical circuit to the...
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6608490 |
Packaging with continuous leaktight check
The invention is relative to a leaktight chamber ( 3 ) in which a liquid having electrical characteristics, preferably a conductive liquid, is introduced into a leaktight volume ( 33 ) between the...
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6593752 |
Method for inspecting hermetically sealed packages
An inspection method for inspecting a hermetricaly sealed package for pinholes in which electrically conductive contents are covered with an electrically insulating film, an electrical conductor...
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6566901 |
Printed circuit board testing apparatus
The printed circuit board testing apparatus for use to test the short circuit in an induction element is provided. The apparatus includes: a signal generating device for providing a first signal;...
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6498496 |
Device for detecting membrane leaks in a diaphragm pump
Device to detect leaks and fatigue in membranes wherein the membrane consists of at least two membrane layers, and wherein at least one of the membrane layers includes a conductor on its inner...
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6476617 |
Method of sorting monolithic ceramic capacitors by measuring the insulation resistance thereof
A sorting method of monolithic ceramic capacitors in which high reliable sorting can be efficiently achieved based on measuring an insulating resistance involves first performing a burn-in process,...
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6469517 |
Sorting method of monolithic ceramic capacitors based on insulation resistance
In the temperature of 70-140 degrees C., the burn-in process of applying a voltage to monolithic ceramic capacitors so that the strength of the electric field applied between the internal...
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6433575 |
Check abnormal contact and via holes by electroplating method
A cathode-anode apparatus is constructed whereby the wafer under test, connected to a conducting wire, forms the cathode terminal and a copper plate, also connected to a conducting wire, forms the...
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6392419 |
Apparatus for and method of monitoring the status of the insulation on the wire in a winding
An apparatus for monitoring the status of the insulation on the wire in a winding in a device comprises a surrogate sample of insulating material having a thickness and properties selected to fail...
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6392420 |
Can coating tester
The integrity and quality of the internal or inside coating of a container, such as a can, is measured by attaching an electric terminal to the can, inserting an electrode into the can, applying an...
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6331778 |
Methods for detecting and locating leaks in containment facilities using electrical potential data and electrical resistance tomographic imaging techniques
Methods are provided for detecting and locating leaks in liners used as barriers in the construction of landfills, surface impoundments, water reservoirs, tanks, and the like. Electrodes are placed...
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6265880 |
Apparatus and method for detecting conduit chafing
Apparatus and method to identify chafing of a conduit, thereby reducing the failure of any system which would be damaged or whose function would be impaired by abrasion of the conduit. Such a...
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6229313 |
Mapping of pipeline grounding points by airborne or ground magnetic measurements of current flow in the pipeline
Apparatus for remotely determining the amount of current I flowing in a long, linear conductor, comprising a first sensor for measuring at a first location a magnetic field H arising due to current...
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6204669 |
Detection of defects in protective barriers
The invention includes apparatus and method for detecting defects in various barrier materials including surgical gloves and food packaging. Voltage is applied across electrodes and a barrier...
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6205408 |
Continuous monitoring system
The present invention provides automated systems for performing electrostatic discharge (ESD) device efficacy monitoring and recording the results for an ESD auditing program. Systems of the...
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6118280 |
Method for detecting defects in dielectric film
Disclosed are a method and an apparatus for detecting a defect in a dielectric film. The dielectric film is electrified in an electrolyte solution containing a metal in such a manner the dielectric...
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6100702 |
In-situ fault detection apparatus and method for an encased energy storing device
An apparatus and method for detecting a breach in an electrically insulating surface of an electrically conductive power system enclosure within which a number of series connected energy storing...
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6078180 |
Monitoring partial discharges
A method of initiating and monitoring partial discharges in an insulating medium is disclosed. Apparatus for performing the method is also disclosed. A relatively low frequency time varying...
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6057689 |
Apparatus and method for leak detection in a fluid-filled balloon useful to treat body tissue
An apparatus for detecting leaks in a fluid-filled device used to treat a patient's tissue includes an catheter having an expandable device defining a fluid reservoir about the distal end of the...
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6054865 |
Multiple function electrical safety compliance analyzer
A safety compliance test instrument includes circuitry for performing insulation resistance and ground circuit tests such as a ground bond test, as well as high voltage AC and DC dielectric...
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6009744 |
System and method for high voltage leak detection
A system and method for detecting leakage of a part, includes a controller for generating a start command, a voltage generating circuit for generating at least one high voltage pulse signal in...
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5969532 |
Method of inspecting crack in ceramic substrate
A method of inspecting a crack in a ceramic substrate that is not exposed on the surface. The method can detect all cracks and make objective judgement possible by expressing the inspection result...
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5867029 |
Method of nondestructive insulation test and a nondestructive insulation testing apparatus
A method of nondestructive insulation testing is disclosed which comprises the steps of: (a) placing an electric device, having a core and at least one winding provided on the core, in a reduced...
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5850144 |
Method for detecting leaks in a membrane
A leak-testable, fluid-impervious membrane is formed as a laminate of a conductive mesh scrim between upper and lower insulative polymeric resin layers. The scrim is preferably a screen formed of a...
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5844406 |
Method and apparatus for testing and measuring for porosity and anomalies of materials using electron beams
The porosity and integrity of a nonconductive material is determined using electron beams and electronic instrumentation. The electric corona discharge from holes in the nonconductive material is...
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5824882 |
Device for checking the porosity of thin rubber products
Proposed is a device for testing the porosity of dielectric foil, particularly rubber products, such as condoms (2) with a cover holder over which the rubber product is placed, and of one or more...
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5736237 |
Geomembranes
A sheet such as a geomembrane consisting essentially of an extruded in situ blend of two copolymers of ethylene and one or more alpha-olefins having 3 to 8 carbon atoms, said blend having a flow...
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