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Class Information
Number: 340/514
Name: Communications: electrical > Condition responsive indicating system > With particular system function (e.g., temperature compensation, calibration) > Testing
Description: Subject matter where the operativeness of the system is determined at discrete times.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5376927 |
Programmable fluid detector with pressure probe discriminator |
Dec. 27, 1994 |
| 5341122 |
Pressure actuated glass break simulator |
Aug. 23, 1994 |
| 5319353 |
Alarm display system for automatic test handler |
Jun. 7, 1994 |
| 5294890 |
Examination circuit for a sensor |
Mar. 15, 1994 |
| 5281951 |
Fire alarm system and method employing multi-layer net processing structure of detection value weight coefficients |
Jan. 25, 1994 |
| 5260664 |
Network monitor and test apparatus |
Nov. 9, 1993 |
| 5239459 |
Automated assessment processor for physical security system |
Aug. 24, 1993 |
| 5239203 |
Common ground control switch for an irrigation system |
Aug. 24, 1993 |
| 5235315 |
Self test for obstacle detection system |
Aug. 10, 1993 |
| 5181011 |
Method for checking the operability of safety system for vehicles |
Jan. 19, 1993 |
| 5173683 |
Apparatus and method for multiplexing multiple data and analog values in a peripheral device |
Dec. 22, 1992 |
| 5172096 |
Threshold determination apparatus and method |
Dec. 15, 1992 |
| 5170148 |
Radiant energy testing device for fire detectors |
Dec. 8, 1992 |
| 5168262 |
Fire alarm system |
Dec. 1, 1992 |
| 5164703 |
Audio intrusion detection system |
Nov. 17, 1992 |
| 5159317 |
System and method for remote telephonic station actuation |
Oct. 27, 1992 |
| 5154504 |
Communications and testing for emergency systems |
Oct. 13, 1992 |
| 5153722 |
Fire detection system |
Oct. 6, 1992 |
| 5151682 |
Fail-safe testing of an infrared sensor arrangement |
Sep. 29, 1992 |
| 5151683 |
Power supply control device in fire alarm system |
Sep. 29, 1992 |
| 5140306 |
Alarm indicating system |
Aug. 18, 1992 |
| 5136275 |
Ground connection monitoring for airbag electrical igniter circuit |
Aug. 4, 1992 |
| 5128653 |
Fire alarm system |
Jul. 7, 1992 |
| 5128962 |
Line interface circuit and a method of testing such a circuit |
Jul. 7, 1992 |
| 5121101 |
Apparatus and method for a smoke alarm device with integrated testing circuits |
Jun. 9, 1992 |
| 5119069 |
Apparatus and method for locating boundaries of detection zones covered by a passive infrared detection system |
Jun. 2, 1992 |
| 5117219 |
Smoke and fire detection system communication |
May. 26, 1992 |
| 5107446 |
Environmental detection system useful for fire detection and suppression |
Apr. 21, 1992 |
| 5105371 |
Environmental detection system useful for fire detection and suppression |
Apr. 14, 1992 |
| 5086293 |
Line interruption supervisory device for a fire alarm system |
Feb. 4, 1992 |
| 5045840 |
Device for sensing continuity in a circuit having an open circuited apparatus |
Sep. 3, 1991 |
| 5017905 |
Fire alarm system |
May. 21, 1991 |
| 4994788 |
System for collecting alarms from a set of stations |
Feb. 19, 1991 |
| 4988977 |
Address setting means for fire detectors |
Jan. 29, 1991 |
| 4970510 |
Self test avionics equipment |
Nov. 13, 1990 |
| 4965556 |
Combustion products detector having self-actuated periodic testing signal |
Oct. 23, 1990 |
| 4962368 |
Reliability and workability test apparatus for an environmental monitoring system |
Oct. 9, 1990 |
| 4952913 |
Tag for use with personnel monitoring system |
Aug. 28, 1990 |
| 4923117 |
Microcomputer-controlled system with redundant checking of sensor outputs |
May. 8, 1990 |
| 4916432 |
Smoke and fire detection system communication |
Apr. 10, 1990 |
| 4908602 |
Apparatus and method of testing a portable held button for emergency response system |
Mar. 13, 1990 |
| 4901056 |
Test initiation apparatus with continuous or pulse input |
Feb. 13, 1990 |
| 4901061 |
Instrumentation and monitoring systems employing differential temperature sensors |
Feb. 13, 1990 |
| 4893109 |
Airbag electrical igniter readiness detector |
Jan. 9, 1990 |
| 4885571 |
Tag for use with personnel monitoring system |
Dec. 5, 1989 |
| 4884060 |
Multi-state selection switch for a personal emergency response system |
Nov. 28, 1989 |
| 4884059 |
Apparatus and method for reporting verification testing of a personal emergency response system |
Nov. 28, 1989 |
| 4870394 |
Smoke detector with improved testing |
Sep. 26, 1989 |
| 4862142 |
Circuit with memory for detecting intermittent changes in resistance, current, voltage, continuity, power interruption, light, and temperature |
Aug. 29, 1989 |
| 4859075 |
Laser thermal testing method and system for use with a fire alarm system |
Aug. 22, 1989 |
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