Patents
Patents for G08B 17 - Fire alarms; Alarms responsive to explosion (10,975)
11/1985
11/26/1985US4555634 Optical smoke detector with contamination detection circuitry
11/19/1985US4554459 Monitoring system for a predetermined field of view
11/19/1985CA1196983A1 Multi-operation mode type of security-ensuring apparatus
11/12/1985US4553138 Fire alarm system
11/12/1985US4553031 Optical fire or explosion detection system and method
10/1985
10/30/1985EP0159798A1 Fire and explosion protection system
10/29/1985US4550313 Fire detecting system
10/29/1985US4550306 Signal transmission system for fire alarm junction line
10/23/1985EP0159244A1 Electrical particle detector for the detection of fire
10/23/1985EP0158817A1 Interconnection part for a warning device
10/15/1985US4547675 Smoke detector operating according to the radiation extinction principle
10/15/1985US4547673 Smoke and flame detector
10/10/1985WO1985004504A1 Dual spectrum frequency responding fire sensor
10/10/1985WO1985004483A1 Electric detector of particles for the detection of a fire
10/09/1985EP0156915A1 Ionization type smoke sensor
10/02/1985EP0155969A1 Heat-resistant casing for ionization type smoke sensor
10/01/1985US4544921 Fire alarm system
10/01/1985US4543815 Device for the detection of foreign components in a gas and an application of the device
09/1985
09/24/1985CA1194181A1 In-line fire detector of a fire protection and alarm system
09/11/1985EP0153959A1 Test device for an optical infra red detector
09/10/1985US4540980 Portable security alarm
09/03/1985US4539556 Combustion products detector with accelerated test
09/03/1985US4539555 Fire and smoke protection device for use in buildings
08/1985
08/27/1985US4538137 Fire detector
08/07/1985EP0150233A1 Method of determining the break-through of a UV tube and device for carrying out the method
08/06/1985US4533834 Optical fire detection system responsive to spectral content and flicker frequency
08/06/1985US4532996 Automatic fire extinguisher with acoustic alarm
07/1985
07/30/1985CA1191229A1 Flame detector
07/24/1985EP0148949A1 Fire sensor apparatus
07/23/1985US4531114 Intelligent fire safety system
07/17/1985EP0148513A1 Gas sensor and detection system comprising such a sensor
07/16/1985US4529976 Smoke detector with masking shield
07/16/1985US4529881 Flame detector with test lamp and adjustable field of view
07/16/1985CA1190485A1 Apparatus and method for safely purifying hydrogen gas
07/10/1985EP0041952B1 Danger detection device with detector
07/09/1985US4528555 Light extinction smoke detector
07/04/1985WO1985002476A3 Fiber optics system with self test capability
06/1985
06/25/1985US4525703 Portable smoke alarm
06/25/1985US4525700 Fire alarm system
06/19/1985EP0145189A1 Improvements relating to smoke detection apparatus
06/19/1985EP0144897A2 Fiber optics system with self test capability
06/18/1985US4524351 Smoke detector
06/18/1985US4524281 Optical smoke detector with sensitivity adjustment
06/12/1985EP0144250A2 Fire alarm systems with incipient hyper-sensitivity monitoring
06/12/1985EP0143976A1 Fire detector equipped with sensor
06/11/1985CA1188773A1 Smoke detector indicator
06/06/1985WO1985002476A2 Fiber optics system with self test capability
06/04/1985US4521120 Forest fire rate of spread with timers method
05/1985
05/29/1985EP0142827A1 Automatic fire sensor, and method for the manufacture of automatic fire sensors
05/29/1985EP0142672A1 Optical smoke detector
05/28/1985US4520503 Tone discrimination circuit
05/28/1985US4520352 Fire alarm system and method
05/28/1985CA1187718A1 Process for the early detection of smouldering in brown coal or lignite
05/22/1985EP0142310A1 Electrical circuit arrangements with charge storage detector
05/22/1985EP0141987A2 Alarm signalling method and application device therefor
05/15/1985EP0141580A1 Glass ceramic materials and the use thereof in thermal sensors
05/15/1985EP0141162A2 Fire alarm box provided with an identification carrier
05/14/1985US4517555 Smoke detector with remote alarm indication
05/14/1985US4517161 Detection of explosive hydrocarbons in aircraft
05/08/1985EP0140502A1 Improvements relating to smoke detection apparatus
05/07/1985US4516022 Detection of light-producing events
05/07/1985CA1186817A1 Ionization chamber for smoke detector and the like
04/1985
04/30/1985US4514721 Multi-operation mode type of security-ensuring apparatus
04/23/1985US4513202 Self compensating fire detection device
04/17/1985EP0137708A2 Improvements in and relating to fire and explosion detection and suppression
04/16/1985US4511889 Surge protected smoke alarm
04/16/1985CA1185496A1 Surgical dressing
04/09/1985US4509601 Discrimination circuitry for fire and explosion suppression apparatus
04/02/1985US4509041 Correlation type flicker flamon
03/1985
03/27/1985EP0135362A2 Optical smoke detectors
03/27/1985EP0135361A2 Apparatus for detecting particulate material in suspension
03/26/1985US4507652 Bidirectional, interactive fire detection system
03/19/1985US4506255 Operation test circuit for fire detectors
03/19/1985US4506161 Smoke detector with a radiation source operated in a pulse-like or intermittent mode
03/19/1985US4505600 Temperature sensor
03/14/1985WO1985001141A1 Test device for an optical infra red detector
03/14/1985WO1985001140A1 Optical fire or explosion detection system and method
03/14/1985WO1985001111A1 Heat-resistant casing for ionization type smoke sensor
03/14/1985WO1985001110A1 Ionization type smoke sensor
03/13/1985EP0133990A1 Smoke sensor arrangement operating by the extinguish principle, and fire assembly having such a smoke sensor arrangement
02/1985
02/13/1985EP0132969A1 Improvements relating to smoke detection apparatus
02/12/1985US4498330 Gas detecting and monitoring device
02/12/1985CA1182592A1 Ionization type smoke detector with test circuit
02/05/1985US4498074 Selectively testable fire detector
02/05/1985US4497373 Fire and explosion detection and suppression
01/1985
01/29/1985US4496930 In-line fire detector of a fire protection and alarm system
01/29/1985CA1181831A1 Fire detection system with ir and uv ratio detector
01/23/1985EP0131877A2 Device for fire detection
01/16/1985EP0130992A1 Photoelectric smoke detector.
01/09/1985EP0130558A1 Conventional size sample chamber for assembling an ionisation smoke alarm insert
01/09/1985EP0130307A2 Fire detector equipped with sensor
01/08/1985CA1180829A1 Lift control system
01/01/1985US4491830 Fire alarm system
12/1984
12/19/1984EP0128601A1 Temperature monitoring device
12/18/1984US4489312 Selective test circuit for fire detectors
12/18/1984US4489308 Emergency exit indicators
12/12/1984EP0127645A1 Fire alarm and electrode device therefor.
12/11/1984US4488269 Temperature surveillance systems
12/11/1984US4488044 Ionization chamber for smoke detector and the like
11/1984
11/27/1984US4485305 Infrared detector with vibrating chopper