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Class Information
Number: 340/635
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Condition of electrical apparatus
Description: Subject matter wherein the monitored condition is an electrical property of a specific electrical device or circuit.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6265981 |
Apparatus for detecting operation of an electric fence and fence charger |
Jul. 24, 2001 |
| 6262669 |
Voice diagnostic apparatus for mainboard |
Jul. 17, 2001 |
| 6262670 |
Source measure unit having secondary feedback for eliminating transients during range changing |
Jul. 17, 2001 |
| 6255939 |
Method and device for sensing an object or a person in the interior of a vehicle |
Jul. 3, 2001 |
| 6246332 |
System and method for detecting voltage and current imbalance in an electrical energy supply |
Jun. 12, 2001 |
| 6243020 |
Method and apparatus for programmably driving an LED display |
Jun. 5, 2001 |
| 6243017 |
Method and arrangement for determining remaining operating life of fluorescent lamp |
Jun. 5, 2001 |
| 6243016 |
System and a method for monitoring and warning regarding the presence of manually and temporarily fitted ground connectors on high voltage conductors, as well as a warning device and a conduct |
Jun. 5, 2001 |
| 6236325 |
Position detector with irregularity detectable function and cable for use in the same |
May. 22, 2001 |
| 6236326 |
Method and apparatus for intelligently signaling a battery charge condition in a wireless telephone |
May. 22, 2001 |
| 6225911 |
Information processing apparatus and its control method for cooling inside apparatus with fan |
May. 1, 2001 |
| 6225893 |
Alarm system for engine block heater |
May. 1, 2001 |
| 6225907 |
Environmental control system incipient failure indicator apparatus |
May. 1, 2001 |
| 6222441 |
Process and circuit for connecting an actuator to a line |
Apr. 24, 2001 |
| 6218953 |
System and method for monitoring the light level around an ATM |
Apr. 17, 2001 |
| 6218951 |
Safety circuit |
Apr. 17, 2001 |
| 6208258 |
Circuit and method for determining whether AC mains voltage is below or above a predetermined set point |
Mar. 27, 2001 |
| 6208257 |
Inspection apparatus of an emergency exit light |
Mar. 27, 2001 |
| 6205846 |
Method of determining with great accuracy the rate of leakage from the case of an electrical apparatus |
Mar. 27, 2001 |
| 6205408 |
Continuous monitoring system |
Mar. 20, 2001 |
| 6198402 |
Electric power system protection and control system |
Mar. 6, 2001 |
| 6198401 |
Detection of sub-cycle, self-clearing faults |
Mar. 6, 2001 |
| 6198403 |
Power line meter/monitor with LED display |
Mar. 6, 2001 |
| 6191695 |
Gas station with electromagnetic-wave sensor |
Feb. 20, 2001 |
| 6191697 |
Circuit continuity detection system and method |
Feb. 20, 2001 |
| 6188321 |
Monitoring circuit for a supply voltage |
Feb. 13, 2001 |
| 6184793 |
Method of testing aboveground fuel systems |
Feb. 6, 2001 |
| 6184783 |
Electronic control unit for car |
Feb. 6, 2001 |
| 6169475 |
System and method for active detection of connection to a network |
Jan. 2, 2001 |
| 6169489 |
Motor winding contamination detector and detection |
Jan. 2, 2001 |
| 6169491 |
Multiport power monitor |
Jan. 2, 2001 |
| 6163263 |
Circuitry for electrical device in multi-device communications system |
Dec. 19, 2000 |
| 6163264 |
Electrical connectors, lamps and lampholders |
Dec. 19, 2000 |
| 6163266 |
Fan operation detection circuit for a DC fan and method of operation thereof |
Dec. 19, 2000 |
| 6160484 |
Process and apparatus for the display and provision of alarm means for measured values on communications terminals |
Dec. 12, 2000 |
| 6160485 |
Voltage level conditioning transceiver cable |
Dec. 12, 2000 |
| 6157309 |
Battery pack |
Dec. 5, 2000 |
| 6157308 |
Detecting hidden faults in reliable power systems |
Dec. 5, 2000 |
| 6157312 |
Appliance for integrating multiple forms of communication |
Dec. 5, 2000 |
| 6147615 |
Speed detecting device for a direct current motor, and electric fan with a motor speed detecting device |
Nov. 14, 2000 |
| 6147617 |
Apparatus and method for detecting faults in outdoor display |
Nov. 14, 2000 |
| 6147616 |
Automatic power interruption and re-supply relay for an electric power line |
Nov. 14, 2000 |
| 6140927 |
Battery failure indicator for a single battery |
Oct. 31, 2000 |
| 6140926 |
Redundant status indicators for fault tolerance |
Oct. 31, 2000 |
| 6137418 |
Single channel apparatus for on-line monitoring of three-phase AC motor stator electrical faults |
Oct. 24, 2000 |
| 6133840 |
Apparatus using vibration motor |
Oct. 17, 2000 |
| 6127933 |
Portable communication terminal |
Oct. 3, 2000 |
| 6121886 |
Method for predicting fault conditions in an intelligent electronic device |
Sep. 19, 2000 |
| 6111503 |
Integrated proximity detector for antennas |
Aug. 29, 2000 |
| 6111504 |
Electronic equipment security and recovery system |
Aug. 29, 2000 |
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