| |
 |
|
Class Information
Number: 340/508
Name: Communications: electrical > Condition responsive indicating system > With particular system function (e.g., temperature compensation, calibration) > Alarm system supervision > Redundant (e.g., added circuit or loop)
Description: Subject matter having either duplicate primary alarm circuits, an added circuit, or double loops in the primary alarm circuit, to monitor at least an element of the primary circuit.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7598884 |
Seismic warning system |
Oct. 6, 2009 |
| 7593512 |
Private VoIP network for security system monitoring |
Sep. 22, 2009 |
| 7557721 |
On-board thermostat and a system for detecting excess temperature |
Jul. 7, 2009 |
| 7525422 |
Method and system for providing alarm reporting in a managed network services environment |
Apr. 28, 2009 |
| 7474947 |
Vehicle customizing system |
Jan. 6, 2009 |
| 7467029 |
Dual processor supervisory control system for a vehicle |
Dec. 16, 2008 |
| 7446659 |
Theft deterrent device with dual sensor assembly |
Nov. 4, 2008 |
| 7436297 |
System and method for protecting networked security devices |
Oct. 14, 2008 |
| 7436291 |
Protection of devices in a redundant configuration |
Oct. 14, 2008 |
| 7429929 |
Safety device |
Sep. 30, 2008 |
| 7382245 |
Method and apparatus for indicating a power condition at a notification appliance |
Jun. 3, 2008 |
| 7333010 |
Method and apparatus for verifying operation of notification appliances during low input voltage condition |
Feb. 19, 2008 |
| 7298253 |
Method and apparatus for deciding whether to issue an alarm signal in a security system |
Nov. 20, 2007 |
| 7286049 |
Method and system of re-directing and backing up security system data at a receiver |
Oct. 23, 2007 |
| 7262693 |
Process field device with radio frequency communication |
Aug. 28, 2007 |
| 7098798 |
Process device with loop override |
Aug. 29, 2006 |
| 7058967 |
Video distribution system and method |
Jun. 6, 2006 |
| 7049952 |
System for detection of hazardous events |
May. 23, 2006 |
| 7034705 |
Emergency information terminal and emergency information system including terminal |
Apr. 25, 2006 |
| 6982641 |
Simplified circuit for intrusion detectors |
Jan. 3, 2006 |
| 6970078 |
Methods and apparatus for generating a data structure indicative of an alarm system circuit |
Nov. 29, 2005 |
| 6930596 |
System for detection of hazardous events |
Aug. 16, 2005 |
| 6927695 |
Sensor loop with distributed power sources and method therefor |
Aug. 9, 2005 |
| 6914519 |
System and method for muting alarms during a conference |
Jul. 5, 2005 |
| 6888459 |
RFID based security system |
May. 3, 2005 |
| 6816125 |
Forming electromagnetic communication circuit components using densified metal powder |
Nov. 9, 2004 |
| 6816068 |
Programmable temporal codes/pulses |
Nov. 9, 2004 |
| 6778082 |
Smoke detector system for a house |
Aug. 17, 2004 |
| 6771170 |
Power system waveform capture |
Aug. 3, 2004 |
| 6756896 |
Distributed residental alarm system and method therefor |
Jun. 29, 2004 |
| 6712071 |
Self-contained breathing apparatus |
Mar. 30, 2004 |
| 6696940 |
System and method for loop diagnostics in a security system |
Feb. 24, 2004 |
| 6693531 |
Integrated control of a system |
Feb. 17, 2004 |
| 6693529 |
Fire alarm system |
Feb. 17, 2004 |
| 6674362 |
Emergency informing terminal and emergency informing system including the terminal |
Jan. 6, 2004 |
| 6614347 |
Apparatus and method for providing alarm synchronization among multiple alarm devices |
Sep. 2, 2003 |
| 6606028 |
Apparatus and method for supervision |
Aug. 12, 2003 |
| 6396398 |
Method and apparatus for safe single-channel evaluation of sensor signals |
May. 28, 2002 |
| 6392536 |
Multi-sensor detector |
May. 21, 2002 |
| 6374165 |
Railway information transmission method and system |
Apr. 16, 2002 |
| 6356191 |
Error compensation for a process fluid temperature transmitter |
Mar. 12, 2002 |
| 6353393 |
Switch status monitoring system |
Mar. 5, 2002 |
| 6337570 |
Current loop comprising a test circuit |
Jan. 8, 2002 |
| 6265971 |
Fiber-sync communications channel |
Jul. 24, 2001 |
| 6259363 |
Detector removal signalling device |
Jul. 10, 2001 |
| 6252501 |
Message repeating apparatus and method |
Jun. 26, 2001 |
| 6246318 |
Modular safety switching |
Jun. 12, 2001 |
| 6230086 |
Railway information transmission method and system |
May. 8, 2001 |
| 6198389 |
Integrated individual sensor control in a security system |
Mar. 6, 2001 |
| 6166632 |
Interactive alarm systems |
Dec. 26, 2000 |
|
|
|
