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Class Information
Number: 340/693.2
Name: Communications: electrical > Condition responsive indicating system > Specified power supply > Substitute or emergency source (e.g., back-up battery)
Description: Subject matter wherein upon the failure of a primary power supply there is energized a secondary power supply to maintain operation of the electrical means providing the humanly perceptible signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7573396 |
Air craft emergency lighting system |
Aug. 11, 2009 |
| 7495577 |
Multipurpose radio |
Feb. 24, 2009 |
| 7478251 |
Methods and apparatus for provisioning uninterruptible power for power over Ethernet applications |
Jan. 13, 2009 |
| 7423538 |
Child alert system |
Sep. 9, 2008 |
| 7423554 |
Aircraft security system |
Sep. 9, 2008 |
| 7414538 |
Detector assembly suited to smoke alarms |
Aug. 19, 2008 |
| 7349813 |
Fault tolerant power system architecture for fluid flow measurement systems |
Mar. 25, 2008 |
| 7330122 |
Remote tracking and communication device |
Feb. 12, 2008 |
| 7327219 |
Enhanced alarm system for monitoring of patients |
Feb. 5, 2008 |
| 7250875 |
Traffic signal transfer switch |
Jul. 31, 2007 |
| 7242313 |
System for providing pathway indications through unlit areas |
Jul. 10, 2007 |
| 7236097 |
Hand washing alert system |
Jun. 26, 2007 |
| 7237134 |
Backup power module for industrial control and monitoring network |
Jun. 26, 2007 |
| 7224286 |
Solar panel having visual indicator |
May. 29, 2007 |
| 7218056 |
Lighting device with multiple power sources and multiple modes of operation |
May. 15, 2007 |
| 7193514 |
Child resistant closure cap |
Mar. 20, 2007 |
| 7191351 |
Method and network for providing backup power to networked devices |
Mar. 13, 2007 |
| 7130664 |
User-based signal indicator for telecommunications device and method of remotely notifying a user of an incoming communications signal incorporating the same |
Oct. 31, 2006 |
| 7084771 |
Child alert system |
Aug. 1, 2006 |
| 7081827 |
Power over Ethernet-prioritized active splitter |
Jul. 25, 2006 |
| 7030740 |
Multifunction car theft alarm lock with tire pressure sensing device |
Apr. 18, 2006 |
| 6998995 |
Elevator remote monitoring apparatus |
Feb. 14, 2006 |
| 6970072 |
Home automation module having externally powered communications port |
Nov. 29, 2005 |
| 6950032 |
Apparatus and method for protection against appliance leaking |
Sep. 27, 2005 |
| 6924732 |
Camera for monitoring utilizing power line communication |
Aug. 2, 2005 |
| 6778082 |
Smoke detector system for a house |
Aug. 17, 2004 |
| 6771181 |
Crawl to the light emergency exit |
Aug. 3, 2004 |
| 6721580 |
Ensuring emergency availability of communications devices |
Apr. 13, 2004 |
| 6641286 |
Fire extinguisher mount/locator |
Nov. 4, 2003 |
| 6625741 |
Arrangement for a security module |
Sep. 23, 2003 |
| 6580361 |
Low voltage speaker and lighting system |
Jun. 17, 2003 |
| 6472994 |
Emergency guidance system |
Oct. 29, 2002 |
| 6452491 |
Amplifier and heat sink configuration |
Sep. 17, 2002 |
| 6437699 |
Battery capacity indication circuit and indication method thereof, and battery-operated electronic device and cellular communication terminal apparatus comprising the indication circuit |
Aug. 20, 2002 |
| 6414599 |
Smoke detector |
Jul. 2, 2002 |
| 6414598 |
Liquid leak detector and alarm system |
Jul. 2, 2002 |
| 6396407 |
Method for displaying residual capacity of battery, battery pack and portable electric device using the method |
May. 28, 2002 |
| 6392563 |
Traffic light backup system using light-emitting diodes |
May. 21, 2002 |
| 6366211 |
Remote recovery arrangement for alarm system |
Apr. 2, 2002 |
| 6362743 |
Smoke alarm with dual sensing technologies and dual power sources |
Mar. 26, 2002 |
| 6329907 |
Emergency power system for traffic control signals |
Dec. 11, 2001 |
| 6288642 |
Self-contained security system |
Sep. 11, 2001 |
| 6172612 |
Smoke detector with remote testing, shutoff and powering means |
Jan. 9, 2001 |
| 6121897 |
Dedicated transfer switch for a single electrical load, such as a traffic signal |
Sep. 19, 2000 |
| 6094130 |
Emergency power station for traffic control signals |
Jul. 25, 2000 |
| 6011465 |
Backup arrangement for alarm system |
Jan. 4, 2000 |
| 5973603 |
House/garage smoke detector |
Oct. 26, 1999 |
| 5912514 |
Uninterruptible power supply unit |
Jun. 15, 1999 |
| 5883577 |
Multi station smoke detectors |
Mar. 16, 1999 |
| 5880676 |
Christmas tree ornament-shaped fire alarm |
Mar. 9, 1999 |
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