Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 17 - Fire alarms; Alarms responsive to explosion
Patents for G08B 17 - Fire alarms; Alarms responsive to explosion (10,975)
08/1982
08/24/1982US4345827 Distance-measuring system with in-range signalling for use with cameras, alarms, and the like
08/17/1982US4345242 Gas detector
08/10/1982US4344002 Detection circuit and structure therefor
08/03/1982US4342986 Central station alarm reporting system
08/03/1982CA1129034A1 Smoke detector
07/1982
07/20/1982US4340885 Gas detector
07/20/1982CA1127944A1 Detection process
07/13/1982CA1127418A1 Apparatus and method for indicating the presence in a fluid of one or more predetermined substance
07/07/1982EP0055319A1 Smoke detector of the light diffusion type with self-checking
07/06/1982US4338568 Method and device for detection of a substance
06/1982
06/30/1982EP0054680A1 Smoke detector according to the radiation extinction principle
06/22/1982US4336455 Smoke detectors
06/22/1982US4336454 Smoke detector ionisation chamber using nickel-63 source
06/22/1982CA1126377A1 Hot-box signalling devices with temperature-compensation characteristics
06/15/1982US4335379 Method and system for providing an audible alarm responsive to sensed conditions
06/15/1982US4335378 Timed dual comparator alarm
06/15/1982CA1125858A1 Apparatus and method for detecting substances and regulating current
06/08/1982US4333724 Photoelectric detector
05/1982
05/25/1982CA1124361A1 Fire or explosion detection
05/25/1982CA1124353A1 Strobed smoke detector
05/11/1982CA1123493A1 Pvc line fire detector
05/05/1982EP0050953A1 Flame detection circuit
05/04/1982US4328527 Selective ultraviolet signal amplifier circuit
05/04/1982US4328488 Flame-detecting apparatus including a field-limiting device
05/04/1982US4328424 Ionization detector chamber
05/04/1982CA1123123A1 Multiple chamber ionization detector
04/1982
04/27/1982US4327361 Gas sensor
04/27/1982US4327289 Ionization detector calibration
04/06/1982CA1121483A1 Optically biased smoke detector
03/1982
03/30/1982US4322721 Self-monitoring warning installation
03/23/1982US4321595 Smoke detector
03/16/1982CA1120132A1 Flame sensing system
03/09/1982US4319234 Smoke detector with dual sensors
03/09/1982US4319231 Fire sensing system protected from noise factors
03/09/1982US4319229 Alarm system having plural diverse detection means
03/03/1982EP0046587A1 Flame monitoring system
03/02/1982CA1119318A1 Smoke detector with means for increasing the sensitivity
03/02/1982CA1119269A1 Smoke detector with test means for simulating a pre-determined percentage of smoke
02/1982
02/23/1982US4317113 Photoelectric smoke sensor
02/23/1982US4317045 Flame monitoring apparatus and method
02/23/1982CA1118869A1 Optical smoke detector
02/16/1982US4316184 Combination combustion-products detector
02/16/1982US4316179 Fire detection system
02/16/1982US4315594 Connection apparatus for a fire alarm
02/09/1982US4315256 Chimney fire detector
02/09/1982US4315158 Photoelectric smoke sensing chamber and smoke sensor box
02/02/1982US4314239 Portable electronic alarm device
01/1982
01/26/1982US4313110 Smoke alarm having temporary disabling features
01/26/1982CA1117201A2 Smoke detector
01/19/1982CA1116699A1 Fail-safe alarm system utilizing frequency modulated signal detection
01/12/1982US4310837 Electrical device termination high temperature indicator
01/12/1982CA1116319A1 Smoke detectors
01/05/1982US4309698 Acoustic fire detection circuit responsive to microcapsule ruptures
01/05/1982US4309663 Rate of change detection
01/05/1982CA1115860A1 Smoke detectors
12/1981
12/30/1981EP0042501A1 Device for the transmission of measured values in a fire warning system
12/29/1981US4308531 Light transmission type smoke detector
12/29/1981US4308458 Fire detectors utilizing an ionization chamber not subject to condensation of water vapor during variations of temperature
12/29/1981CA1115377A1 Smoke detector
12/29/1981CA1115374A1 Apparatus and methods for detecting an incipient fire condition
12/29/1981CA1115372A1 Multi-function combustion detecting device
12/29/1981CA1115040A1 Capsules of bromofluoroalkane as fire alarm
12/23/1981EP0041952A1 Danger detection device with detector.
12/22/1981CA1114918A1 Infrared detector
12/15/1981US4306230 Self-checking photoelectric smoke detector
12/15/1981US4306229 Smoke detector having an integral piezo-electric buzzer
12/08/1981US4305070 Emergency alarm system for static structure utilizing automobile horn
12/08/1981US4305069 Personal smoke and fire detector and warning unit
12/01/1981CA1113570A1 Battery powered smoke detector
12/01/1981CA1113569A1 Secondary light testing in optical smoke detectors
11/1981
11/25/1981EP0040342A1 Smoke detector
11/25/1981EP0040211A1 Fire extinguishing apparatus.
11/24/1981US4302753 Multi-function combustion detecting device
11/24/1981CA1112896A1 Optical particle detector
11/18/1981EP0039761A2 Fire annunciating arrangement and method
11/11/1981EP0039624A1 Data communication system
11/10/1981US4300133 Smoke detector
11/10/1981US4300132 Fire alarm system
11/10/1981US4300099 Fire detecting system
11/10/1981US4300048 Alarm detector responsive to rate change of a monitored condition
11/10/1981CA1112040A1 Bubble display apparatus and method
11/04/1981EP0038856A1 Dual spectrum infared fire sensor
11/03/1981CA1111933A1 Two-channel optical flame detector
11/03/1981CA1111929A1 Optical smoke detector with scattered light collecting elements
10/1981
10/27/1981US4297688 Photoelectric smoke sensing and alarming device
10/20/1981US4296324 Dual spectrum infrared fire sensor
10/20/1981US4295486 Low cost, diffuser concealable, volume control, heat responsive, resettable, butterfly damper operator
10/20/1981US4295371 Temperature detecting device
10/07/1981EP0037237A2 Energizing circuit for discharge-type fire alarm sensor unit
10/06/1981US4292844 Temperature detecting device
10/06/1981CA1110344A1 High performance electro-optic smoke detector
09/1981
09/29/1981US4292513 Heat detector circuit
09/23/1981EP0036276A2 Fire detection system
09/22/1981CA1109570A1 Dual ionization chamber
09/22/1981CA1109541A1 Optical smoke detector
09/22/1981CA1109540A1 Optical smoke detector circuit
09/15/1981US4290057 Sequential power distribution circuit
09/15/1981CA1109166A1 Ionization fire-signal device
09/08/1981US4288791 Smoke detector and method
09/08/1981US4288790 Fire alarm
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