| Patents for G08B 17 - Fire alarms; Alarms responsive to explosion (10,975) |
|---|
| 11/26/1980 | EP0019310A1 Fire indicator with a temperature-sensitive element |
| 11/25/1980 | US4236148 Theft deterring and signalling device for portable fire extinguishers |
| 11/25/1980 | CA1090483A1 High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
| 11/18/1980 | US4234877 Ion type smoke sensor |
| 11/11/1980 | US4233594 Fire detection and observation system |
| 11/11/1980 | US4233504 Apparatus for detecting the passage of glowing embers |
| 11/04/1980 | US4232307 Electrical test circuit for optical particle detector |
| 11/04/1980 | US4232292 Data transmitter device |
| 10/28/1980 | US4230950 Electro-optic smoke detector |
| 10/28/1980 | US4230808 Method for making solid materials having a flash point of less than 500° C. fire alarming, fire alarming and self extinguishing, or fire alarming, self-extinguishing and fire abating |
| 10/21/1980 | US4229659 Oxidizer burn through detector with majority voting network |
| 10/14/1980 | US4228429 Alarm system having phase-sensitive bridge circuit |
| 10/14/1980 | US4228428 Visible signal for alarm, such as a smoke detector |
| 10/07/1980 | US4227191 Light emitting smoke detector |
| 10/07/1980 | US4227085 Ionization-type particle detector |
| 10/07/1980 | US4226533 Optical particle detector |
| 10/07/1980 | CA1087276A1 Fire sensing device |
| 10/01/1980 | EP0016351A1 Gas detection device for use in an environment where explosions may occur |
| 10/01/1980 | EP0016025A1 Conduits protected against sabotage, for security installations and installation thereof within a protection network |
| 10/01/1980 | EP0015942A1 Ionisation detector chamber |
| 09/30/1980 | US4225860 Sensitivity controlled dual input fire detector |
| 09/30/1980 | US4225791 Optical smoke detector circuit |
| 09/23/1980 | US4224611 Smoke alarm station |
| 09/23/1980 | US4223559 Apparatus and methods for detecting an incipient fire condition |
| 09/17/1980 | EP0015348A1 Fire detector |
| 09/16/1980 | US4223305 Single station type ionization smoke sensor |
| 09/16/1980 | US4223303 Alarm devices for interconnected multi-device systems |
| 09/09/1980 | US4222046 Abnormal condition responsive means with periodic high sensitivity |
| 09/09/1980 | US4222045 Capacitive shift fire detection device |
| 09/09/1980 | US4222041 Danger alarm system |
| 09/09/1980 | US4221485 Optical smoke detector |
| 09/09/1980 | CA1085485A1 Smoke detector with chamber for producing eddy currents |
| 09/03/1980 | EP0015007A1 Circuitry for an optical flue gas indicator |
| 09/03/1980 | EP0014874A2 Fire detector using pulsed radiation |
| 09/03/1980 | EP0014779A1 Smoke detector comprising a pulse evaluating circuit |
| 09/02/1980 | US4220857 Optical flame and explosion detection system and method |
| 09/02/1980 | CA1085019A1 Smoke detector |
| 08/26/1980 | US4219806 Dual alarm gas detector |
| 08/26/1980 | US4219803 Two-wire fire sensing and receiving system |
| 08/20/1980 | EP0014265A1 Photoelectric system for monitoring flames and fumes |
| 08/20/1980 | EP0014251A1 Coupling device for fire-alarm |
| 08/05/1980 | US4216377 Light scattering smoke detector |
| 08/05/1980 | CA1082962A1 High output audible alarm device utilizing a piezoelectric transducer and voltage doubling means |
| 07/29/1980 | US4215281 Detection circuit and structure therefor |
| 07/29/1980 | US4215278 Detector for abnormal phenomena |
| 07/22/1980 | CA1082336A1 Optical fire detector |
| 07/15/1980 | US4213047 Smoke detector having unipolar ionization chamber |
| 07/15/1980 | US4213046 Ionization fire-signal device |
| 07/15/1980 | CA1081821A1 Optical smoke detector |
| 07/08/1980 | US4212004 Pressure drop detectors |
| 07/08/1980 | US4211362 Smoke detecting timer controlled thermostat |
| 07/01/1980 | USRE30323 Smoke detector adapted to a smoke sensing apparatus |
| 06/26/1980 | WO1980001326A1 Smoke detector |
| 06/17/1980 | US4208655 Protective system for electrical apparatus |
| 06/12/1980 | WO1980001214A1 Event indication and indication system |
| 06/11/1980 | EP0011625A1 Thermostat control for heating and/or cooling system |
| 06/10/1980 | US4207558 Interconnection circuit for a plurality of alarm units |
| 06/10/1980 | US4207480 D.C. Amplifier with improved characteristics with respect to temperature |
| 06/10/1980 | CA1079417A1 Smoke detector |
| 06/10/1980 | CA1079381A1 Variable frequency light pulser for smoke detectors |
| 06/03/1980 | US4206456 Smoke detector |
| 06/03/1980 | US4206454 Two channel optical flame detector |
| 06/03/1980 | US4206366 Optical smoke detector |
| 05/28/1980 | EP0011461A1 An improved fire detection system |
| 05/28/1980 | EP0011364A1 Heat detector circuit |
| 05/28/1980 | EP0011205A1 Photoelectric smoke detector |
| 05/27/1980 | US4205306 Battery operated smoke detector electronics |
| 05/13/1980 | US4203100 Light decrease type smoke sensor |
| 04/29/1980 | CA1076718A1 Incipient fire detector |
| 04/29/1980 | CA1076717A1 Ionization chamber assembly |
| 04/29/1980 | CA1076678A1 Fire-extinguishing system |
| 04/22/1980 | US4199755 Optical smoke detector |
| 04/22/1980 | US4199682 Fire and explosion detection apparatus |
| 04/22/1980 | CA1076269A1 Ionization detector |
| 04/16/1980 | EP0009901A1 Alarm system |
| 04/15/1980 | US4198627 Photoelectric synchronous smoke sensor |
| 04/01/1980 | US4196427 Method and apparatus for measuring low concentrations of chlorine and chlorine oxide |
| 04/01/1980 | US4196426 Combustion products detection apparatus |
| 04/01/1980 | US4195384 Self-resetting, cable operated translating drive link |
| 03/25/1980 | US4195287 Fire and absence detection and alarm system for bed occupants |
| 03/25/1980 | CA1074461A1 Ionization detector |
| 03/19/1980 | EP0008991A1 Improvement in fire detectors |
| 03/18/1980 | US4194192 Alarm devices for interconnected multi-device systems |
| 03/18/1980 | US4194191 Smoke simulating test apparatus for smoke detectors |
| 03/18/1980 | US4194120 Adjustable ionization chamber |
| 03/18/1980 | CA1074025A1 High gain sensing and switching means for smoke detectors |
| 03/11/1980 | US4193069 Latching alarm smoke detector |
| 03/05/1980 | EP0008549A1 Arrangement for the detection of fire at first outbreak |
| 03/04/1980 | CA1073052A1 Explosive gas monitoring method and apparatus |
| 02/19/1980 | US4189720 Repeater for smoke and similar alarms |
| 02/19/1980 | US4189644 Smoke detector ionization chamber |
| 02/12/1980 | CA1071774A2 Smoke sensing fire alarm |
| 02/12/1980 | CA1071731A1 Apparatus for supervising leads interconnecting a plurality of self-contained abnormal condition sensing and alarm annunciating units |
| 01/29/1980 | US4186390 Battery powered smoke detector |
| 01/29/1980 | US4186389 Sleeper's smoke-alarm clock |
| 01/22/1980 | US4185278 Obscuration type smoke detector |
| 01/22/1980 | US4185197 Arrangement for inhibiting the effect of extraneous electric fields on an improved ionization smoke detector |
| 01/22/1980 | US4185196 Ionization smoke detector having improved stability and sensitivity |
| 01/15/1980 | CA1069997A1 Methods and apparatus for optimising the response of transducers |
| 01/10/1980 | WO1980000044A1 Conduits protected against sabotage,for security installations and installation thereof within a protection network |