Matches 401 - 450 out of 661 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >
Match Document Document Title
5469147 Smoke detector device, especially for a space in an aircraft  
A smoke detector device for signalling a smoke detection in a space in an aircraft such as a cabin, a toilet, or a cargo hold of an aircraft, is mounted in a recessed position in a hole in a wall...
5451931 Optical smoke detector  
Optical smoke detectors such as extinction smoke detectors and scattered-light smoke detectors include a radiation source, a radiation detector or receiver, and a measurement volume which is in...
5451929 Smoke alarm and air cleaning device  
An air cleaner with a smoke alarm unit for a forced air recirculating system is disclosed. The smoke alarm unit is housed within a module that fits within the frame of the air cleaner with minimal...
5444434 Extended life smoke detector  
The present invention is an improvement in battery powered smoke detectors. A smoke detector is powered by a series connection of two Li/SOCl 2 cells having a capacity of about 2 amp hours. The...
5442336 Switch-timer system and method for use in smoke detector alarm unit  
A system and method for temporarily disabling a smoke detector alarm unit. The present invention includes a switch between the main assembly and the power assembly of the unit and a timer for...
5432500 Overhead detector and light assembly with remote control  
The detector assembly is connectable to a power line which includes a switch which, when operated, causes power transitions at a power terminal for the detector assembly. The detector assembly...
5422629 Alarm silencing circuitry for photoelectric smoke detectors  
A silencable photoelectric-type detector includes a source of radiant energy and a detector. A generator circuit provides a sequence of pulses to energize the source. A biasing circuit biases the...
5410299 Smoke detector  
An improved smoke detector in combination with a fan assembly for reducing the likelihood of smoke detector activation by ambient smoke, has a fan with a timer controlling the fan's motor to...
5400014 Smoke detector with dark chamber  
A smoke detector includes a dark chamber surrounded by a peripheral wall structure having a plurality of nested vanes. The second element of each vane is shorter than the first, and intersects the...
5396221 Smoke detector disguised as a Christmas tree ornament  
A smoke alarm is disguised as a Christmas tree ornament. A lamp is connected between a power source and the control circuit of the alarm and is located on the ornament in a position where it is a...
5381130 Optical smoke detector with active self-monitoring  
In a scattered-light smoke detector, for preventing false alarms due to extraneous matter in a measurement chamber (1), a radiation source (2) and two radiation detectors (7, 8) are included. An...
5349338 Fire detector and alarm system  
A fire alarm system having recorded vocal warning messages and/or instructions is provided. The fire alarm system has a microphone by which a user can record a vocal message specifically suited for...
5339072 Fire detector with anti-tampering measures for use in vehicles  
A fire detector installed in a low ceiling surface of a vehicle such as an aircraft or train is equipped with an antitampering measure for preventing tampering such as covering the exposed portion...
5331310 Amperometric carbon monoxide sensor module for residential alarms  
A relatively inexpensive modular component that can be substituted for, or used in conjunction with, an existing smoke detector in a commercially available residential fire-detection alarm...
5327119 Ionizing smoke sensor  
The present invention relates to an improvement of an ionizing smoke sensor having one radiation source and a two chambered structure consisting of an internal ionization chamber housing an...
5315292 Ceiling mountable smoke detector and fire extinguisher combination  
A ceiling mountable smoke detector with audible alarm including a close-on-temperature-rise heat sensing switch which controls the activation of a solenoid controlled valve placed over the...
5309145 Travel convenience and security device  
A clock, a lamp, an alarm, a motion detector and a smoke alarm are advantageously combined in a travel device which provides the user with both convenience and security when travelling. The motion...
5309148 Apparatus and method for testing smoke detector operation  
Both an apparatus and method for testing smoke detector operation is provided. The apparatus and method is used to either standardize conventional smoke detectors, or to test the actuation of an...
5309146 Room occupancy indicator means and method  
Rooms in a building each have a heating, ventilating and air conditioning system (HVAC), a room control unit having a temperature controller, and various sensors. The control unit monitors the...
5300923 Apparatus and method for disabling a smoke detector when using a smoke-emanating apparatus  
An apparatus and method for use with a smoke detector that is located in proximity with a stove or similar smoke-emanating article. The smoke detector is enabled by placing the detector near the...
5289165 Smoke alarm apparatus  
A smoke alarm structure includes a first housing containing a sensor and audible alarm in electrical communication with a second housing. The second housing includes a back-up battery structure...
5281954 Device for replacing battery in smoke alarm  
A device for replacing a battery in a battery powered apparatus such as a smoke alarm is provided which permits the battery to be replaced from a location remote from the battery connector of the...
5280273 Toxic gas detector system having convenient battery and sensor replacement  
A detector system for sensing the presence of a toxic gas, such as carbon monoxide, and sounding an alarm. The presence of the gas is detected by passing light through a biomimetric sensing...
5280272 Fire alarm system which distinguishes between different types of smoke  
A fire alarm system which radiates light towards a smoke detecting space. Scattered light resulting from smoke that may exist in the smoke detecting space is judged by a receiver with respect to...
5264668 Smoke detector muffling device  
A device for temporarily muffling and screening of audible generation from an associated smoke detector is provided to include a housing of a soft resilient polymeric foam material, having a cavity...
5260691 Fire alarm device accompanied with air conditioner  
A combination fire alarm/air conditioner, which can immediately detect a fire. The device includes a temperature-sensor and/or a smoke-sensor installed in the room-side air inlet of the air...
5247283 Method for testing smoke sensor and a smoke sensor having a function of executing the test  
A method for testing smoke sensor is to set a predetermined level for alarm generation on the basis of information on a first output of a main light receiving element for a stray light caused by an...
5243329 Smoke alarm for use with an electronic timing device  
A device for sensing smoke and providing an indication upon the sensing of smoke is disclosed. A housing, being in the shape of a wrist watch, includes an electronic circuit that senses smoke and...
5231378 Particle detection which senses scattered light  
A high sensitivity smoke detector comprises a cylindrical housing incorporating a sampling chamber through which air to be sampled is forced. A modulated light source, such as a laser, directs...
5227776 Combined alarm, security and rescue system  
A combined alarm, security and rescue system includes room boxes (33a-33j, 35a-35j) in associated rooms, a two way communication system (29a-29C, 30a-30C, 31a-31b, 32a-32j, 34a-34j) between a...
5212470 Supervised fire alarm system  
A fire alarm system having increased immunity to false alarms comprises control and indicating means (6) and a plurality of ionization smoke detectors (7) connected through signal lines (8, 9, 14)...
5186653 Smoke alarm remote disconnect  
A smoke alarm attachment which connects between a battery, used to provide power to the smoke alarm's circuitry and a battery connector of the smoke alarm. The attachment has a plug which, when...
5177461 Warning light system for use with a smoke detector  
A flashing alarm device responsive to audible signals produced by a smoke detector when the smoke detector senses a smoke condition, the alarm device including a circuit with a microphone portion...
5160916 Ionization type smoke sensor  
An ionization-type smoke sensor having a 2-chamber 1-radiation source structure including an inner electrode having a radiation source, an intermediate electrode having an opening through which...
5159315 Communication system with environmental condition detection capability  
A communication system (200) includes a portable radio (100) which has environmental detection capabilities. The radio (100) upon detecting the presence of an environmental condition such as smoke...
5153567 Alarm kit apparatus  
A mounting plate secures a fire extinguisher canister within a releasable securement strap, wherein the securement strap further includes a flashlight member released upon releasing of the fire...
5149038 Mounting device for smoke alarm  
A mounting assembly for a smoke alarm, which avoids rendering the smoke alarm inoperable, includes an alarm supporting member having an alarm secured to one end thereof, with the alarm supporting...
5146209 Self-contained apparatus for emergency lighting incorporating alarm systems for fire, gas and the like  
A self-contained apparatus for emergency lighting has a light, a detector for gas or the like, which can produce an electric input, and a processor which can receive the electric input and produce...
5140301 Guidance method and apparatus in case of emergency evacuation  
A guidance apparatus in case of emergency evacuation comprising a laser which is disposed within a building or the like in such way that a laser beam emitted from the laser is directed in the...
5138302 Photoelectric, scattered light smoke detector  
A photoelectric smoke detector has a circuit substrate coupled to an optical-system base as disposed in a circuit accommodating zone defined within a detector housing by the base together with a...
5121101 Apparatus and method for a smoke alarm device with integrated testing circuits  
Apparatus for providing integrated test circuits for a smoke detector is disclosed. The smoke detector operates such that products of combustion such as smoke and carbon monoxide cause the...
RE33920 Smoke detector having variable level sensitivity  
A smoke detector having variable sensitivity to smoke levels and using one button both to test the smoke detector and actuate a mode of diminished sensitivity to smoke levels. The smoke detector is...
5110214 Apparatus and method for evaluating the propensity of polymers for smoking during processing  
An apparatus and method for determining the propensity of a polymer to emit smoke by measuring the smoke emitted when the polymer is melted and extruded. The polymer is heated to a molten state and...
5103212 Balanced fluid flow delivery system  
A multi-port system sampling maintains a balanced fluid flow, and more particularly is a gas sampling system used for the rapid detection of fire in which the flow rate through each sampling system...
5093651 Intelligent smoke detector  
A smoke detector has an alarm which may be turned off for a short interval to prevent its sounding continuously upon actuation by nonthreatening smoke or a malfunction. A timing circuit having a...
5055822 Scent alarm device  
A scent alarm device which includes a housing and a spray canister of an odorant, such as butyl mercaptan, supported within the housing utilizes a mechanism for intermittently dispensing odorant...
5053752 Smoke detector and method using elongated flexible low battery condition indicator member  
The low battery level indicator is provided for a smoke detector. When the battery in the smoke detector becomes so weak that its voltage drops below a pre-determined value, an elongated, flexible...
5028911 Acoustically responsive portable emergency light  
A portable light includes a light, a battery, and a switch having an "on" position and an "off" position. The switch in the "off" position prevents the light from being illuminated and the switch...
5023601 Smoke detector for TV  
In a conventional TV, audio or other equipment having a speaker(s) and a source of power. A smoke detector is mounted inside the TV case, the output of the smoke detector being connected to the TV...
5019805 Smoke detector with strobed visual alarm and remote alarm coupling  
The smoke detector of the present invention is designed to warn hearing impaired persons of fire or smoke. A small, attractive, and inexpensive wall or ceiling mounted unit houses a dual chamber...
Matches 401 - 450 out of 661 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >