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Class Information
Number: 361/87
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > With specific quantity comparison means > Current
Description: Subject matter wherein the protective circuitry is activated by a difference in the compared currents.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619864 |
Regulator short-circuit protection circuit and method |
Nov. 17, 2009 |
| 7609497 |
Residual-current-operated protective device |
Oct. 27, 2009 |
| 7552367 |
Fault recording and sequence of events recording device capable of recording communication-based signals related to electrical power systems |
Jun. 23, 2009 |
| 7538519 |
Information handling system with battery protected from non-permanent failures |
May. 26, 2009 |
| 7532956 |
Distributed power and protection system |
May. 12, 2009 |
| 7526393 |
Virtual branch load management |
Apr. 28, 2009 |
| 7518836 |
Switching mode power supply and method for performing protection operation thereof |
Apr. 14, 2009 |
| 7504743 |
Power supply control device for on-vehicle electrical loads |
Mar. 17, 2009 |
| 7505237 |
Electrical safety outlet |
Mar. 17, 2009 |
| 7489487 |
Multi-level power converter |
Feb. 10, 2009 |
| 7483250 |
Drive circuit for switching device |
Jan. 27, 2009 |
| 7483248 |
Method and apparatus for detecting current changes in integrated circuits |
Jan. 27, 2009 |
| 7480124 |
Detection of an AC input phase-loss on a multi-phase AC servo drive |
Jan. 20, 2009 |
| 7480125 |
Constant voltage circuit, system power device and method of controlling system power device |
Jan. 20, 2009 |
| 7474070 |
Electric power steering apparatus |
Jan. 6, 2009 |
| 7463464 |
Method and apparatus for sensing brushless DC motor average current from overcurrent protection circuitry |
Dec. 9, 2008 |
| 7403015 |
System for wireless monitoring of circuit breakers |
Jul. 22, 2008 |
| 7391252 |
Circuit arrangement with a short-circuit protective circuit |
Jun. 24, 2008 |
| 7362558 |
Protective device in a controller |
Apr. 22, 2008 |
| 7352550 |
Method of detecting run-dry conditions in fuel systems |
Apr. 1, 2008 |
| 7352546 |
Motor overcurrent protection device |
Apr. 1, 2008 |
| 7312969 |
Current control apparatus for electric load |
Dec. 25, 2007 |
| 7280334 |
Integrated processor/motherboard short detect and safeguard mechanism |
Oct. 9, 2007 |
| 7274548 |
Abnormal current determining method, electronic apparatus, and computer program of same |
Sep. 25, 2007 |
| 7262948 |
Power switch with simple overload protection |
Aug. 28, 2007 |
| 7245465 |
Voltage regulator |
Jul. 17, 2007 |
| 7206177 |
Device and method for protection against overcurrents in an electrical energy distribution cabinet |
Apr. 17, 2007 |
| 7193428 |
Low threshold current switch |
Mar. 20, 2007 |
| 7161781 |
Signal driving system |
Jan. 9, 2007 |
| 7157862 |
Protection device for a chopping supply and a vehicle lighting device |
Jan. 2, 2007 |
| 6998807 |
Active sensing and switching device |
Feb. 14, 2006 |
| 6952356 |
Adaptive over-current detection |
Oct. 4, 2005 |
| 6937258 |
Flat panel display device |
Aug. 30, 2005 |
| 6870720 |
Device and method for determining intermittent short circuit |
Mar. 22, 2005 |
| 6842322 |
Electronic trip device comprising a capacitor for supply of a trip coil |
Jan. 11, 2005 |
| 6816349 |
Integrated power switch with current limit control and a method of use |
Nov. 9, 2004 |
| 6791851 |
Isolated drive circuitry used in switch-mode power converters |
Sep. 14, 2004 |
| 6791283 |
Dual mode regulated light-emitting diode module for flashlights |
Sep. 14, 2004 |
| 6778412 |
Synchronous converter with reverse current protection through variable inductance |
Aug. 17, 2004 |
| 6757146 |
Instantaneous overcurrent element for heavily saturated current in a power system |
Jun. 29, 2004 |
| 6718273 |
Methods for simplified field-oriented control of asynchronous machines |
Apr. 6, 2004 |
| 6717384 |
Frequency changer protection circuit for controlling the acceleration of an electric vehicle |
Apr. 6, 2004 |
| 6693782 |
Surge suppression for current limiting circuits |
Feb. 17, 2004 |
| 6683777 |
Semiconductor protective control unit for controlling output transistors connected to inductive load |
Jan. 27, 2004 |
| 6674621 |
IC PMOS Schottky reverse bias protection structure |
Jan. 6, 2004 |
| 6671149 |
Systems and methods for protecting vulnerable micro electro-mechanical system (MEMS) and electronic relay devices |
Dec. 30, 2003 |
| 6667866 |
Virtual ground following single-phase trip |
Dec. 23, 2003 |
| 6654217 |
Quick responding instantaneous trip system |
Nov. 25, 2003 |
| 6633471 |
Overcurrent protection circuit, electric leakage protection circuit for an electric apparatus |
Oct. 14, 2003 |
| 6625550 |
Arc fault detection for aircraft |
Sep. 23, 2003 |
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