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Class Information
Number: 324/535
Name: Electricity: measuring and testing > Fault detecting in electric circuits and of electric components > For fault location > By time measuring
Description: Subject matter where a defect produces a fault signal which is evaluated as to time to indicate the location of the fault.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7622931 |
Non-contact reflectometry system and method |
Nov. 24, 2009 |
| 7554334 |
Matching network characterization using variable impedance analysis |
Jun. 30, 2009 |
| 7538560 |
System and method for component failure protection |
May. 26, 2009 |
| 7424417 |
System and method for clock domain grouping using data path relationships |
Sep. 9, 2008 |
| 7400150 |
Remote fault monitoring in power lines |
Jul. 15, 2008 |
| 7355412 |
Remote fault monitoring system |
Apr. 8, 2008 |
| 7292044 |
Integrating time measurement circuit for a channel of a test card |
Nov. 6, 2007 |
| 7212008 |
Surveillance device detection utilizing non linear junction detection and reflectometry |
May. 1, 2007 |
| 7157710 |
Corona discharge detection |
Jan. 2, 2007 |
| 7096443 |
Method for determining the critical path of an integrated circuit |
Aug. 22, 2006 |
| 7075309 |
System and method to locate an anomaly of a conductor |
Jul. 11, 2006 |
| 7043398 |
Method for operating a position measuring device |
May. 9, 2006 |
| 7005862 |
Method and apparatus for measuring electric characteristics of cable assembly, and computer product |
Feb. 28, 2006 |
| 6977507 |
Cable tester with indicator |
Dec. 20, 2005 |
| 6927579 |
Parallel arc fault diagnostic for aircraft wiring |
Aug. 9, 2005 |
| 6923065 |
Apparatus for testing aramid fiber elevator cables |
Aug. 2, 2005 |
| 6919727 |
Accurate time measurement system circuit and method |
Jul. 19, 2005 |
| 6882161 |
Method of measuring dielectric constant of PCB for RIMM |
Apr. 19, 2005 |
| 6853196 |
Method and apparatus for electrical cable testing by pulse-arrested spark discharge |
Feb. 8, 2005 |
| 6784819 |
Measuring skew between digitizer channels using fourier transform |
Aug. 31, 2004 |
| 6774639 |
Partial discharge monitoring system for transformers |
Aug. 10, 2004 |
| 6737877 |
Method and circuit for reading a potentiometer |
May. 18, 2004 |
| 6703840 |
Methods and apparatuses for automatic process control for biasing and testing heated electrode refrigerant sensors |
Mar. 9, 2004 |
| 6696974 |
Cable device for detecting and monitoring rock and soil displacement |
Feb. 24, 2004 |
| 6670816 |
Test coupon for measuring a dielectric constant of a memory module board and method of use |
Dec. 30, 2003 |
| 6662660 |
Apparatus for testing aramid fiber elevator cables |
Dec. 16, 2003 |
| 6617869 |
Electrical circuit with a testing device for testing the quality of electronic connections in the electrical circuit |
Sep. 9, 2003 |
| 6538451 |
Single ended measurement method and system for determining subscriber loop make up |
Mar. 25, 2003 |
| 6512377 |
Method and apparatus for extraction of via parasitics |
Jan. 28, 2003 |
| 6509740 |
Methods and apparatus for time domain reflectometry |
Jan. 21, 2003 |
| 6486676 |
Reflection measurement method and apparatus for devices that are accessed through dispersive elements |
Nov. 26, 2002 |
| 6483316 |
Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing system for carrying out the same |
Nov. 19, 2002 |
| 6477475 |
Fault point location system |
Nov. 5, 2002 |
| 6385561 |
Automatic fault location in cabling systems |
May. 7, 2002 |
| 6366095 |
Method and device for detecting and locating irregularities in a dielectric |
Apr. 2, 2002 |
| 6340890 |
Method and device for locating partial discharges in an electric high-voltage apparatus |
Jan. 22, 2002 |
| 6313741 |
Fault detection circuit for sensors |
Nov. 6, 2001 |
| 6300768 |
Method of diagnosing partial discharge in gas-insulated apparatus and partial discharge diagnosing system for carrying out the same |
Oct. 9, 2001 |
| 6259255 |
Surge locating system of power transmission line and method thereof |
Jul. 10, 2001 |
| 6194902 |
Pipe testing apparatus and method using electrical or electromagnetic pulses transmitted into the pipe |
Feb. 27, 2001 |
| 6037780 |
Device for measuring transmission delay time in a transmission cable |
Mar. 14, 2000 |
| 5991338 |
Pinpointing interruptions |
Nov. 23, 1999 |
| 5920195 |
Apparatus and method for the measurement of forest duff moisture content |
Jul. 6, 1999 |
| 5903157 |
Measuring system for enclosed high-voltage switchgear |
May. 11, 1999 |
| 5903155 |
Method of measurement for fault-distance determination on a HVDC power transmission line having at least two lines connected in parallel |
May. 11, 1999 |
| 5889405 |
Method of detecting fault in electromagnetically-actuated intake or exhaust valve |
Mar. 30, 1999 |
| 5877631 |
Evaluation of the quality of wiring formed in a test semiconductor device |
Mar. 2, 1999 |
| 5818237 |
Apparatus for envelope detection of low current arcs |
Oct. 6, 1998 |
| 5814998 |
Device and method for locating partial discharges with detachable coupling units |
Sep. 29, 1998 |
| 5751149 |
Method and apparatus for high frequency time domain reflectometry |
May. 12, 1998 |
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