194828 ⎘
Fire alarms; Alarms responsive to explosion; Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
Sub-classes:DEVICE AND METHOD FOR DETERMINING SOIL MOISTURE
#2Leakage Current Noise Reduction for Ionization Chamber Based Alarms
#3FIRE DETECTION APPARATUS USING MULTIPLE SENSORS AND OPERATING METHOD THEREOF
#4Home monitoring and control system
#5Ember detector device, a bush/wild fire detection and threat management system, and methods of use of same
#6Home monitoring and control system
#7Ember detector device, a bush/wild fire detection and threat management system, and methods of use of same
#8Smart wall switch controller
#9Integrated fire alarm method and system
#10Duty cycle tuning in self-resonant piezo buzzer
#11System and method for detecting smoke using a sensor
#12Home monitoring and control system
#13Fire suppression system for a structure or a vehicle
#14Hysteretic boost converter with inductor peak current gear-shifting
#15Smart wall switch controller
#16Smoke detectors with light shields and alarm systems including such
#17Home monitoring and control system
#18Smoke detectors with light shields and alarm systems including such
#19Home monitoring and control system
#20Methods and systems for home monitoring and control
#21Smart wall switch controller
#22Intelligent household controller
#23Ionization air filters for hazardous particle detection
#24Heatable smoke alarm
#25Detector unit and sensing chamber therefor
#26Use of optical reflectance proximity detector in battery-powered devices
#27Intelligent smoke sensor with audio-video verification
#28Differential current measurements to determine ion current in the presence of leakage current
#29Non-radioactive ionizing smoke detectors and methods for use thereof
#30Selectable lens button for a smart home device and method therefor
#31Wall switch
#32Method And A Device For Early Detection Of Fires
#33Smoke detector
#34Cover plate for a hazard detector having improved air flow and other characteristics
#35Detector unit and sensing chamber therefor
#36Use of optical reflectance proximity detector for nuisance mitigation in smoke alarms
#37Integrated circuits with radioactive source material and radiation detection
#38Initiation of carbon monoxide and/or smoke detector alarm test using image recognition and/or facial gesturing
#39Sensor chamber airflow management systems and methods
#40Sensor device measurements adaptive to HVAC activity
#41Wireless device networks with smoke detection capabilities
#42Ionized gas detector and ionized gas detecting method
#43Use of optical reflectance proximity detector for nuisance mitigation in smoke alarms
#44Detector unit and sensing chamber therefor
#45Cover plate for a hazard detector having improved air flow and other characteristics
#46Selectable lens button for a hazard detector and method therefor
#47Alarm device for alerting hazardous conditions
#48Two-wafer MEMS ionization device
#49Method and apparatus for detecting smoke in an ion chamber
#50Method and apparatus for detecting smoke in an ion chamber
#51Method and apparatus for detecting smoke in an ion chamber
#52Differential current measurements to determine ION current in the presence of leakage current
#53Smoke detector
#54Method and a device for early detection of fires
#55Dynamic alarm sensitivity adjustment and auto-calibrating smoke detection
#56System and method for high-sensitivity sensor
#57Use of optical reflectance proximity detector for nuisance mitigation in smoke alarms
#58Smoke detector and ionisation apparatus
#59Smoke detector
#60Gas ionization source
#61Microprocessor operated, portable early fire detection and prevention device
#62System and method for high-sensitivity sensor
#63Smoke detector