Patents
Patents for G08B 17 - Fire alarms; Alarms responsive to explosion (10,975)
08/1992
08/04/1992US5136278 Compact and lightweight pneumatic pressure detector for fire detection with integrity switch
07/1992
07/28/1992US5133605 Monitoring system employing infrared image
07/23/1992WO1992012505A1 Alarm condition detector such as dangerous concentration detector of noxious gases in a medium
07/14/1992US5130543 Direction sensitive energy detecting apparatus
07/07/1992US5128653 Fire alarm system
07/01/1992CN2108968U Net type water-proof anti-theft senser alarm
06/1992
06/25/1992WO1992010820A1 Portable smoke alarm
06/23/1992US5124709 Method and apparatus for detecting fire, explosion, and/or projectile penetration
06/17/1992EP0490722A1 Installation for aerial and/or terrestrial teledetection, particularly the detection of forest fires
06/13/1992CA2057399A1 Fiber optic based fire detection and tracking system
06/10/1992EP0489232A1 Fire signal system with surveillance
06/10/1992CN2106625U Multi-functional fire extinguisher with a warning device
06/09/1992US5121344 Method of locating underground mines fires
06/09/1992US5121101 Apparatus and method for a smoke alarm device with integrated testing circuits
06/09/1992CA1303255C Test initiation apparatus with continuous or pulse input
06/05/1992CA2056768A1 Fire detector system and method
06/02/1992US5117916 Sprinkler head and operation monitor therefor
05/1992
05/26/1992US5117223 Combination portable alarm system and storage container for parts thereof
05/26/1992CA1301587C Fusible link construction
05/20/1992CN2105103U Gas leakage alarm with switching-off
05/13/1992CN1016595B Labyrinthic anti-explosion device for bitumite-spraying in blast-furnace
05/12/1992USRE33920 Smoke detector having variable level sensitivity
05/06/1992EP0484038A1 Flame detector using a discrete Fourier transformer to process amplitude samples from a flame signal
05/01/1992CA2052278A1 Flame detector using a discrete fourier transformer to process amplitude samples from a flame signal
04/1992
04/29/1992CN2103169U Intelligence fire alarm searching unit
04/21/1992US5107446 Environmental detection system useful for fire detection and suppression
04/21/1992US5107128 Method and apparatus for detecting flame with adjustable optical coupling
04/15/1992CN2101914U Automatic breaker for leakage of combustible gas
04/15/1992CN2101913U Fire alarm
04/15/1992CN2101912U Electronic gas alarm
04/14/1992US5105371 Environmental detection system useful for fire detection and suppression
04/14/1992US5105370 Environmental detection system useful for fire detection and suppression
04/08/1992EP0479009A1 Temperature sensor
04/07/1992US5103216 Improperly inserted battery detector
04/07/1992US5103212 Balanced fluid flow delivery system
04/07/1992US5103096 Senses concentration of carbon dioxide
03/1992
03/18/1992EP0475884A1 Fire detector with a detector of the light diffusion type and a detector of the ionization type
03/18/1992EP0474860A1 Simple fire detector
03/12/1992DE4028167A1 Ionisation fire detector - has common electrode with FET device coupled by conductive material to electrode
03/03/1992US5093651 Intelligent smoke detector
02/1992
02/26/1992EP0472039A2 Fire detecting method and device
02/12/1992CN2096092U Pocket low power consumption combustion gas alarm
02/04/1992US5086293 Line interruption supervisory device for a fire alarm system
02/04/1992US5085508 Beam alignment apparatus and method usable with projected beam smoke detector systems
01/1992
01/22/1992EP0467388A2 Method for detecting fire, explosion, and/or projectile penetration
01/22/1992CN2094085U Microminiature fire alarm
01/21/1992CA1294698C Frame assembly for a photocell-type smoke detector
01/07/1992US5079542 Abnormal temperature detector for electronic apparatus
01/07/1992US5079422 Fire detection system using spatially cooperative multi-sensor input technique
01/07/1992CA1294021C Real time adaptive round discrimination fire sensor
01/02/1992EP0463795A1 Smoke Particle detector
01/01/1992CN1057538A Simple fire detector
12/1991
12/31/1991US5076260 Sensible body vibration
12/27/1991EP0462642A1 Optical smoke, aerosol and dust detector and fire detector apparatus with optical detector
12/25/1991CN2091476U Fast response temp.-induction detector for fire
12/25/1991CN2091459U Carbon monoxide detecting alarm protecting instrument
12/20/1991WO1991019906A1 Gaseous fluid aspirator or pump
12/20/1991CA2085009A1 Gaseous fluid aspirator or pump
12/17/1991US5073769 Flame detector using a discrete fourier transform to process amplitude samples from a flame signal
12/11/1991EP0460066A1 Method and apparatus for detecting airborne allergen particulates.
12/04/1991EP0459944A1 Apparatus and method for object-bound fire protection of electric and/or electronic systems and utilisation of this apparatus
12/04/1991EP0458938A1 Fire fighting system mainly conceived to safeguard forests.
12/04/1991EP0458925A1 Infrared sensor suitable for fire fighting applications
12/02/1991CA2042624A1 Method and system for detecting underground mine fires
11/1991
11/27/1991CN2089646U Fire alarm
11/26/1991CA1292533C Electronic smoke detector
11/12/1991US5065140 Early warning reactive gas detection system
11/12/1991US5064271 Fiber optic flame and overheat sensing system with self test
10/1991
10/29/1991US5060508 Gas sample chamber
10/24/1991DE4012466A1 Portable alarm clock with integrated smoke detector - has self-testing of gas sensor provided by gas effusion cell
10/23/1991EP0453297A2 Thermal detection arrangement
10/22/1991US5059953 Infrared overheat and fire detection system
10/22/1991US5059796 Infrared monitoring system
10/16/1991EP0452057A2 Infrared overheat and fire detection system
10/09/1991CN2086436U Automatic test alarm shutoff unit for burning gas
10/08/1991US5055830 Battery sensing mechanism
10/03/1991WO1991015836A1 Simple fire detector
10/02/1991EP0449761A2 Method for signalling fire in a thatched roof and fire alarm for thatched roofs
10/01/1991US5053754 Simple fire detector
09/1991
09/24/1991US5051722 Central address and programming unit for fire alarm detector
09/24/1991US5051595 Fiber optic flame detection and temperature measurement system employing doped optical fiber
09/24/1991US5051590 Fiber optic flame detection and temperature measurement system having one or more in-line temperature dependent optical filters
09/17/1991US5049861 Method and system for detecting underground mine fires
09/17/1991US5049756 Method and system for detecting forest fires
09/11/1991EP0446061A2 Abnormal temperature detector for electronic apparatus
09/11/1991EP0445346A1 Battery missing indicator
09/11/1991EP0445332A1 Device for monitoring potentially explosive installations
09/11/1991CN2084630U Mine lamp with gas automatic alarm
09/10/1991CA2035371A1 Improperly inserted battery detector
08/1991
08/27/1991CA1288177C Modular smoke detector
08/21/1991EP0442853A2 Self-contained apparatus for emergency lighting incorporating alarm systems for fire, gas and the like
08/21/1991EP0407429A4 Fluid pollution monitor
08/20/1991CA2010391A1 Smoke - detector with back-up, delay monitoring circuitry
08/14/1991EP0441492A2 System and method for transferring data
08/14/1991EP0440828A1 Gas monitoring system with leak detection and flow cutoff
08/01/1991DE4036041A1 Appts. for detecting discharges in chamber carrying flowing medium - has light conductors with one end in chamber, one opposite photoreceiver
07/1991
07/30/1991CA1287140C Optical smoke detector
07/23/1991US5034725 Semiconductor gas sensor having linearized indications
07/23/1991CA1286546C Fire detection device for regenerative air heater
07/17/1991CN2081113U Gas alarm