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Class Information
Number: 340/510
Name: Communications: electrical > Condition responsive indicating system > With particular system function (e.g., temperature compensation, calibration) > Alarm system supervision > Bridge or potential divider
Description: Subject matter having the primary alarm circuit arranged with at least one potential divider from which supervisory currents are derived.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7081827 |
Power over Ethernet-prioritized active splitter |
Jul. 25, 2006 |
| 6462651 |
Gear indicator |
Oct. 8, 2002 |
| 6462653 |
System and method of group definition |
Oct. 8, 2002 |
| 6392541 |
Theft-deterrent outdoor lighting |
May. 21, 2002 |
| 6392552 |
Weak cooling/overcooling compensation device for refrigerator |
May. 21, 2002 |
| 6229439 |
System and method of filtering |
May. 8, 2001 |
| 5999094 |
Combination telephone and smoke alarm system |
Dec. 7, 1999 |
| 5998985 |
Voltage indicator using serial comparison voltage measurement |
Dec. 7, 1999 |
| 5912618 |
System for detecting the presence of an electrically conductive object, particularly an integrated circuit on a chip card |
Jun. 15, 1999 |
| 5896086 |
Failure diagnostic apparatus |
Apr. 20, 1999 |
| 5517175 |
Potential adjusting sensor supervision circuit |
May. 14, 1996 |
| 5438474 |
Protective sheath |
Aug. 1, 1995 |
| 5218339 |
Arrangement for monitoring a consumer in combination with an internal combustion engine and/or a motor vehicle |
Jun. 8, 1993 |
| 5168262 |
Fire alarm system |
Dec. 1, 1992 |
| 5117219 |
Smoke and fire detection system communication |
May. 26, 1992 |
| 5017905 |
Fire alarm system |
May. 21, 1991 |
| 4916432 |
Smoke and fire detection system communication |
Apr. 10, 1990 |
| 4859989 |
Security system and signal carrying member thereof |
Aug. 22, 1989 |
| 4833451 |
Individual source identification |
May. 23, 1989 |
| 4831361 |
Environmental abnormality alarm apparatus |
May. 16, 1989 |
| 4745399 |
Device for generating an alarm signal in the event of an environmental abnormality |
May. 17, 1988 |
| 4742334 |
Single-wire loop alarm system |
May. 3, 1988 |
| 4725821 |
Device for generating an alarm signal |
Feb. 16, 1988 |
| 4706271 |
Communication lines with terminate and leave capability-DC alarm bridge |
Nov. 10, 1987 |
| 4684931 |
Capacitive sensing security system |
Aug. 4, 1987 |
| 4665384 |
Signal-transmitting junction unit of hazard alarm system |
May. 12, 1987 |
| 4651138 |
Intruder alarm system |
Mar. 17, 1987 |
| 4647913 |
Self-diagnostic ultrasonic intrusion detection system |
Mar. 3, 1987 |
| 4575711 |
Alarm terminal device |
Mar. 11, 1986 |
| 4567471 |
Monitoring system |
Jan. 28, 1986 |
| 4529970 |
Supervision system for monitoring the integrity of a transmission line |
Jul. 16, 1985 |
| 4524349 |
Security system having detector sensing and identification |
Jun. 18, 1985 |
| 4523183 |
Alarm-fault detecting system |
Jun. 11, 1985 |
| 4506253 |
Supervisory and control circuit for alarm system |
Mar. 19, 1985 |
| 4506254 |
Alarm system with detectors and signaling devices on the same cable pair |
Mar. 19, 1985 |
| 4494106 |
Pressure monitor |
Jan. 15, 1985 |
| 4459582 |
Local control apparatus for central station alarm system |
Jul. 10, 1984 |
| 4458239 |
Fire extinguishing apparatus |
Jul. 3, 1984 |
| 4441100 |
Electrical circuits |
Apr. 3, 1984 |
| 4427974 |
Local control apparatus for central station alarm system |
Jan. 24, 1984 |
| 4420745 |
Security system |
Dec. 13, 1983 |
| 4414539 |
Built-in passive fault detection circuitry for an aircraft's electrical/electronic systems |
Nov. 8, 1983 |
| 4410882 |
System for monitoring the ignition function of rapid extinguishing systems |
Oct. 18, 1983 |
| 4369436 |
Anti-bridging cable supervision circuit |
Jan. 18, 1983 |
| 4356474 |
Alarm system |
Oct. 26, 1982 |
| 4356476 |
Multiple alarm detector monitoring and command system |
Oct. 26, 1982 |
| 4348661 |
Self-balancing alarm system |
Sep. 7, 1982 |
| 4310835 |
Security equipment including trigger circuit |
Jan. 12, 1982 |
| 4287515 |
Fire detection system with multiple output signals |
Sep. 1, 1981 |
| 4274087 |
Annunciator monitor circuit |
Jun. 16, 1981 |
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