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Class Information
Number: 340/506
Name: Communications: electrical > Condition responsive indicating system > With particular system function (e.g., temperature compensation, calibration) > Alarm system supervision
Description: Subject matter where there is continuous monitoring of the operativeness of the alarm circuits in the system.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5225806 |
Security system having mode control of sensor points |
Jul. 6, 1993 |
| 5225997 |
Automatic monitoring and remote reporting device |
Jul. 6, 1993 |
| 5194851 |
Steering controller |
Mar. 16, 1993 |
| 5191313 |
Method of continuous monitoring of process variables of varying grades of a product within a process control system |
Mar. 2, 1993 |
| 5189394 |
Fire alarm display |
Feb. 23, 1993 |
| 5159316 |
Capacitance change article removal alarm |
Oct. 27, 1992 |
| 5155480 |
Event reporting using a two-wire non-blocking bus structure |
Oct. 13, 1992 |
| 5150100 |
Security system |
Sep. 22, 1992 |
| 5144283 |
Energy efficient alarm system and regulative central control unit |
Sep. 1, 1992 |
| 5140622 |
Data transmission system with double lines |
Aug. 18, 1992 |
| 5140306 |
Alarm indicating system |
Aug. 18, 1992 |
| 5136281 |
Monitor for remote alarm transmission |
Aug. 4, 1992 |
| 5128653 |
Fire alarm system |
Jul. 7, 1992 |
| 5117219 |
Smoke and fire detection system communication |
May. 26, 1992 |
| 5103206 |
Security system |
Apr. 7, 1992 |
| 5097259 |
Line fault isolation system |
Mar. 17, 1992 |
| RE33824 |
Fault detecting intrusion detection device |
Feb. 18, 1992 |
| 5086293 |
Line interruption supervisory device for a fire alarm system |
Feb. 4, 1992 |
| 5084825 |
Process control with guard band and fault limit |
Jan. 28, 1992 |
| RE33807 |
Self-powered sensor for use in closed-loop security system |
Jan. 28, 1992 |
| 5083106 |
Intruder detection system with programmable countdown timer for self-supervision |
Jan. 21, 1992 |
| 5083107 |
Fire alarm system |
Jan. 21, 1992 |
| 5077547 |
Non contact programming for transmitter module |
Dec. 31, 1991 |
| 5077548 |
Dual technology intruder detection system with sensitivity adjustment after "default" |
Dec. 31, 1991 |
| 5063371 |
Aircraft security system |
Nov. 5, 1991 |
| 5061916 |
Event driven remote graphical reporting of building automation system parameters |
Oct. 29, 1991 |
| 5057816 |
Multizone intruder detection system with forced walk-test |
Oct. 15, 1991 |
| 5057817 |
Intruder detection system with passive self-supervision |
Oct. 15, 1991 |
| 5051722 |
Central address and programming unit for fire alarm detector |
Sep. 24, 1991 |
| 5049704 |
Electrical conductor element |
Sep. 17, 1991 |
| 5049867 |
Vehicle security apparatus |
Sep. 17, 1991 |
| 5043700 |
Multi-input electrical monitor |
Aug. 27, 1991 |
| 5043701 |
Multi-input electrical monitor |
Aug. 27, 1991 |
| 5043703 |
Supervision of autodyne microwave motion-detection system |
Aug. 27, 1991 |
| 5039980 |
Multi-nodal communication network with coordinated responsibility for global functions by the nodes |
Aug. 13, 1991 |
| 5030939 |
Multiple input signal checking circuit |
Jul. 9, 1991 |
| 5019802 |
Intrusion detection apparatus |
May. 28, 1991 |
| 5017905 |
Fire alarm system |
May. 21, 1991 |
| 5017906 |
Apparatus and method for combining analog detection signals to provide enhanced alarm integrity |
May. 21, 1991 |
| 5008840 |
Multi-zone microprocessor fire control apparatus |
Apr. 16, 1991 |
| 5004999 |
Extended RF range alarm system |
Apr. 2, 1991 |
| 5003290 |
Integrated alarm and access control system |
Mar. 26, 1991 |
| 4996517 |
Household alarm system |
Feb. 26, 1991 |
| 4996518 |
Fire alarm system |
Feb. 26, 1991 |
| 4990888 |
Unitary alarm sensor and communication package for security alarm system |
Feb. 5, 1991 |
| 4988977 |
Address setting means for fire detectors |
Jan. 29, 1991 |
| 4977390 |
Real time method for processing alaarms generated within a predetermined system |
Dec. 11, 1990 |
| 4973943 |
Signal control system using two synchronous ring counter circuits |
Nov. 27, 1990 |
| 4956637 |
System for detecting irregular operation of switch state verification circuit |
Sep. 11, 1990 |
| 4951029 |
Micro-programmable security system |
Aug. 21, 1990 |
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