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5912624 |
Infant's sleep time monitor
A framework is adapted to connect to a top of an infant's crib. A plurality of carbon dioxide detectors are attached to the framework. The carbon dioxide detectors are decorated for viewing...
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5898377 |
Smoke detecting apparatus and method
The smoke detecting apparatus of the present invention comprises a detection space (52) into which generated smoke is to be introduced; light-emitting means (2) for emitting a predetermined coded...
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5898369 |
Communicating hazardous condition detector
A hazardous condition detector system for a dwelling structure made up of independent detectors each capable of sensing the presence of a hazardous condition at its location, generating a local...
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5889468 |
Extra security smoke alarm system
An extra security alarm system for monitoring conditions within a predetermined monitoring area and alerting persons located throughout the monitoring area, persons in the vicinity and appropriate...
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5886637 |
Door with built-in smoke and fire detector
A new door with built-in smoke and fire detector for incorporating a smoke and fire detector into a door. The inventive device includes a door having a generally rectangular configuration. The door...
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5886638 |
Method and apparatus for testing a carbon monoxide sensor
A CO concentration monitoring device operating under the control of a processor periodically checks the CO sensor to insure its ongoing integrity and to issue a distinctive audio signal to a user...
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5883577 |
Multi station smoke detectors
A smoke detector that comprises three different power sources. First one is the 110/220 volt AC house current, through a step down transformer or that can be hard wired into the home or factory....
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5880676 |
Christmas tree ornament-shaped fire alarm
A Christmas tree ornament-shaped fire alarm is provided including a housing shaped as a Christmas ornament and having an interior space. The housing is adapted to be situated on a Christmas tree....
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5877684 |
Sensor equipped portable alarm device which can be used in conjunction with external alarm device
A sensor equipped portable alarm device that also has an input port for connecting to an external sensor so that either the internal sensor or the external sensor can be selected using a sensor...
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5867105 |
Wireless alarm system
A wireless alarm system for generating alarm signals discernible to the hearing impaired. The system includes a detection unit having a smoke or carbon dioxide detector which generates a signal...
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5867095 |
Module tamper detection circuitry
A detector tamper/trouble delay circuit incorporates a sensor which senses the presence or absence of a cover for the detector. When the cover is removed, the sensor triggers a delay element preset...
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5856784 |
Low profile ionization chamber
A very low profile ionization chamber provides increased operating current by using alpha particle emitting isotopes having low emission energies as an ionization source. The chamber includes a...
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5838242 |
Fire detection system using modulation ratiometrics
The present invention utilizes the modulation ratio between the flicker of a sensor signal and the absolute signal average to detect fire conditions. The system of the present invention requires...
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5831537 |
Electrical current saving combined smoke and fire detector
A fire detection system (10) includes a smoke detector (52) that measures smoke particle density indicative of smoldering fires and a CO 2 detector (90) that measures CO 2 concentration...
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5821865 |
Christmas ornament hazard detector
A smoke/heat detector in the form of a Christmas tree ornament utilizes a spherical ornament housing divided by a fire-resistant barrier into lower and upper chambers. A transmitter circuit is...
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5821866 |
Self-diagnosing smoke detector assembly
A self-contained smoke detector system has internal self-diagnostic capabilities and accepts a replacement smoke intake canopy (14) without a need for recalibration. The system includes a...
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5815075 |
Fire dector including a non-volatile memory
The invention relates to fire detector comprising a CPU and a sensor providing an analog measurement signal to the CPU. The CPU includes a non-volatile memory in which at least one normal value for...
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5815066 |
Fire alarm safety silencing system
A new Fire Alarm Safety Silencing System for providing a fire alarm which allows a user to silence during false alarms for a finite period of time wherein the fire alarm rearms itself. The...
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5815068 |
Guiding light system and lighting strip
A light system comprising controllable light sources (35) positioned along alternative routes of movement to serve a s optical means for influencing persons to follow an indicated route of movement...
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5808556 |
Smoke/fire detector
A smoke/fire detector assembly having a base section with electrical contacts and a removable/attachable sensor section having corresponding electrical contacts. Each one of the electrical contacts...
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5801633 |
Combination smoke, carbon monoxide, and hydrocarbon detector
A combination smoke, carbon monoxide and hydrocarbon detector including a smoke detection mechanism adapted to transmit a smoke signal upon the detection of smoke, a carbon monoxide detection...
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5798704 |
Earthquake escape light
An earthquake escape light system having several different triggering systems. In one system vibrations are sensed as several steel balls move between two plates with the upper plate being...
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5798700 |
False alarm resistant fire detector with improved performance
A fire detector having a greatly reduced frequency of generating false alarms. An AND gate is responsive to outputs from first and second fire detector modules that are responsive to the detection...
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5798701 |
Self-adjusting smoke detector with self-diagnostic capabilities
A smoke detector (10) has internal self-adjustment and self-diagnostic capabilities. It includes a microprocessor-based alarm control circuit (24) that periodically checks the sensitivity of a...
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5793295 |
Detection apparatus and method
A detector sensor system for sensing the presence of a toxic gas, such as carbon monoxide and/or smoke whereby a corresponding alarm is sounded. The presence of the gas is detected by passing light...
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5786768 |
Clock radio gas detector apparatus and method for alerting residents to hazardous gas concentrations
An alerting apparatus for alerting residents to hazardous gas concentrations, comprising an alarm clock, a gas sensor, a microcontroller, and visual display and auditory speech warning means for...
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5785891 |
Spray formulation for the testing of smoke detectors
An improved aerosol formulation for activating a smoke detector by emulating the effects of combustion products to test smoke detectors includes a propellant and an active ingredient consisting of...
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5786767 |
Home safety system
A home safety system comprising a smoke detector, a carbon monoxide detector and a microphone connected to a transmitter. The smoke detector is powerable by a/c current and by a battery, and...
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5781291 |
Smoke detectors utilizing a hydrophilic substance
A smoke detector incorporates a porous plastic material which carries a hydrophilic agent alone or in combination with a surfactant which can be sprayed or deposited onto structural elements of the...
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RE35837 |
Microprocessor-controlled strobe light
A flashtube circuit includes a switch which in a first position regulates the storage over time of energy in a first energy storage device and in a second position allows the transfer of energy...
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5774038 |
Safety monitor
The present invention relates to a improved safety monitor (10) which comprises a main monitor (12) and a remote monitor (14) which are in two way communication with each other. The main monitor...
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5764149 |
Enhanced capabilities of smoke detectors
A smoke detector which includes a cover that is attached to a housing base by a mechanical latch. The housing contains a fan that induces an airflow through the housing, a smoke detector that can...
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5751216 |
Projected beam-type smoke detector and receiving unit
A projected beam-type smoke detector and receiving unit includes in its light receiver data output unit 118 for outputting serially status information and status signal output units 85, 86 for...
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5751218 |
Smoke detector housing for improved smoke collection
A smoke detection unit has a detection chamber for sampling smoke from a surrounding environment. The detection chamber allows air circulation but is optically opaque. This configuration is typical...
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5745040 |
Outdoor alerting device for smoke alarms
An outdoor alerting device for smoke alarms including an alarm detecting and alerting device drive unit and an exterior alerting device including a loudspeaker installed within a housing and a...
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5731759 |
Combination flashlight, smoke detector and emergency alarm
A combined flashlight, smoke detector and emergency alarm assembly. A housing contains a flashlight having a bulb, reflector and window at one housing surface for illuminating an area adjacent to...
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5729207 |
Corrosive gas detecting sensor
A corrosive gas detecting sensor has a cartridge, a sensor body, and a connecting unit. The cartridge has a sensor element and a memory device. The sensor element changes its characteristic...
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5726634 |
Smoke alarm with high and low pitched tones
A smoke alarm with high and low pitched tones including a conventional smoke detector adapted to activate upon the detection of smoke associated with fire. A first high tone buzzer is included for...
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5726633 |
Apparatus and method for discrimination of fire types
A multiple sensor smoke detector includes at least an ionization and a photoelectric sensor. Outputs from the sensors are fed to circuitry for generating continuously variable coefficients. One...
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5721529 |
Individual smoke detector with stored range of acceptable sensitivity
A smoke detector is provided with testing apparatus for determining if its sensitivity is within a predetermined acceptable range. The testing apparatus stores in the detector a range representing...
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5719557 |
Photoelectric smoke detector
The present invention provides for a smoke detection chamber and a photoelectric smoke detector containing the smoke detection chamber. The smoke detection chamber has side walls with openings...
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5710541 |
Smoke/fire detector
A smoke/fire detector assembly having a base section and a removable sensor section. The base section includes a plurality of electrical contacts and the sensor section includes a corresponding...
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5705988 |
Photoelectric smoke detector with count based A/D and D/A converter
A method and apparatus in a smoke detector for comparing an analog signal voltage to a digital alarm threshold and for converting a digital sensitivity value to an analog test voltage. The analog...
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5694118 |
Gas detection and alarm system for monitoring gas such as carbon monoxide
A gas detection and alarm system and a method thereof for monitoring a predetermined dose of carbon monoxide and other gases in the atmosphere which can be harmful to humans, having a gas...
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5691699 |
Security detector with optical data transmitter
A security detector including an optical emitter and a controller for determining detector specific values of predetermined parameters and operating the emitter to transmit a code representing the...
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5691704 |
Practical and improved fire detector
A fire detector which combines an NDIR CO 2 gas detector with a photoelectric smoke detector to minimize false alarms by logic means that can be integrated into a single chip that can have an ASIC...
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5691703 |
Multi-signature fire detector
A multi-signature fire detection method and apparatus, utilizing first and second detectors for detecting first and second fire signatures. The first detector outputs a first signal indicative of...
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5686896 |
Low battery report inhibitor for a sensor
In a battery-powered sensor such as a smoke detector, a passive report of unacceptable battery condition is first given while an active report of such condition is inhibited. Then, after the lapse...
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5673027 |
Smoke detector, adjustment apparatus and test apparatus for such a smoke detector
An inexpensive smoke detector having excellent general versatility and reliability allows for an increase in a range of selecting light emitting devices used for such smoke detectors and allows for...
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5670947 |
Light scattering smoke sensor
In a light scattering smoke sensor of the present invention, a first diaphragm portion is disposed just aheat of a light receiving device, and a second diaphragm portion is disposed ahead of the...
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