|
Match
|
Document |
Document Title |
|
|
5670946 |
Smoke detector sensitivity testing apparatus
Apparatus for testing the sensitivity of a smoke detector (12) in-situ, including a head assembly (1) comprising a housing (14) for surrounding a smoke detector in-situ and forming part of a...
|
|
|
5665975 |
Optical detectior including an optical alignment block and method
A device and method for efficiently synthesizing diverse molecular products on substrates. A parent vessel 200 contains a suspension of substrates. The suspension is pressurized with argon and...
|
|
|
5663714 |
Warning system for giving verbal instruction during fire and method of operating the warning system
An alarm system, comprising a smoke detector, a smoke detector output relay, a recording switch, a microphone, a digital recording and a play back device, a timer/pulse generator, a pulse counter,...
|
|
|
5659293 |
Fitting structure of address unit of fire sensor
A fire sensor according to the present invention includes a sensor base, a sensor body and an address unit. The sensor base is mounted and fixed on a predetermined position, for example, a ceiling....
|
|
|
5652563 |
Safety system for a horse stable
A safety system for a stable comprises "smart detectors" installed in the stable for detecting at least one abnormal condition in the stable, a siren and/or flashing strobe installed in each stall...
|
|
|
5646598 |
Smoke detector with advanced safety features
A smoke detector that provides a battery warning arm that is pivotally attached to the smoke detector and is normally stored in a flush position within the smoke detectors cover. Upon the detection...
|
|
|
5642099 |
Light scattering type smoke detector
A light scattering type smoke detector arranged such that even if the range in which light from an LED is emitted has a dispersion, a labyrinth member 90 in the light emitting range has no edge or...
|
|
|
5640058 |
Kits for converting DC battery powered smoke detectors to AC power with battery back-up
Methods, circuits, and kits for converting battery powered smoke detectors to AC power include a power converter which converts standard household AC voltage to a DC voltage suitable for use by a...
|
|
|
5633501 |
Combination photoelectric and ionization smoke detector
An ionization chamber for use in a smoke detector includes first and second outer electrodes and a non-reflective center electrode. The non-reflective center electrode can be formed as a metal...
|
|
|
5629671 |
Photoelectric type fire detector and adjustment unit therefor
A photoelectric type fire detector is capable of accurately adjusting sensitivity using a scattering and translucent plate and exhibits excellent reliability. The photoelectric type fire detector...
|
|
|
5625345 |
Fire safety apparatus
A fire safety apparatus particularly useful in association with Christmas trees comprising a smoke detector, circuitry for processing a signal generated by the smoke detector, an audible alarm, a...
|
|
|
5625346 |
Enhanced capabilities of smoke detectors
A smoke detector unit with a fan that creates an airstream which flows through a smoke detector. Both the fan and the smoke detector are located within a housing that is mounted to the fuselage of...
|
|
|
5621394 |
Smoke alarm monitoring and testing system and method
A smoke detection and alarm system including one or more low cost battery operated smoke alarms fitted with internal non-rechargeable standby batteries, a reactive primary power supply derived from...
|
|
|
5617079 |
Apparatus for replacing a battery in a battery powered device
An apparatus 10 for replacing a battery 12 in a battery powered detection device 14 is disclosed. The apparatus 10 includes a battery housing 18 attached to the detection device 14 for receiving a...
|
|
|
5617077 |
Testable photoelectric detector
A self-testable photoelectric smoke detector incorporates a housing which defines an internal smoke chamber. The housing carries a laser diode and a radiation sensor along with a supplemental...
|
|
|
5612678 |
Fire detector and device for detaching body thereof
A fire detector consisting of a body and a base. An inner wall part is provided in a circumferential wall of the body in such a manner that the inner wall part can be cut away therefrom. Further,...
|
|
|
5610592 |
Fire detecting apparatus
A first dust recovering part is disposed upstream in an air inlet passage from a fire detecting part. The air flow is deflected in the first dust recovering part so as to cause the dust to drop to...
|
|
|
5604483 |
Portable personal security device
A portable, battery operated personal alarm and motion detector has two passive infrared (PIR) elements for sensing motion in two corresponding and oppositely directed fields of view, with each...
|
|
|
5598147 |
Smoke detecting apparatus for fire alarm
A smoke detecting apparatus for a fire alarm has a smoke chamber into which smoke to be detected is introduced, a light emitting lamp disposed in the smoke chamber, a light receiving element...
|
|
|
5596314 |
Enclosure for a gas detector system
An enclosure for a gas detector including an easily removable and replaceable battery/sensor holder and a battery absence indicator. The enclosure includes a flat first panel adapted to be fastened...
|
|
|
5594422 |
Universally accessible smoke detector
A wall-mounted stand-alone smoke detector has an elongated housing. The housing has two ends. One end forms a base. The other end houses a sensor head remote from the base. A rigid member supports...
|
|
|
5594410 |
Emergency warning escape system
An enhanced emergency warning and escape system is taught. The system can advantageously be combined with existing smoke or fir detector technology to share detection technology and activate...
|
|
|
5589824 |
Multi-sensor detection system
An alarm for sensing different conditions of an ambient air presents a housing for an alarm circuit, the housing having lobes for first, second and third circuit sensors surrounding a single...
|
|
|
5587705 |
Multiple alert smoke detector
The battery powered smoke detector of the present invention is designed to provide an early warning of the presence of an environmental condition of fire or smoke to persons in remote areas of a...
|
|
|
5581241 |
Ultra-sensitive smoke detector
A smoke detector that operates on the principle of scattered light is disclosed that has the capability of an operating sensitivity that is tens of times greater than that of smoke detectors...
|
|
|
5577696 |
Smoke alarm mount
A mount for releasably securing a smoke detector to a support surface. The inventive device includes a base plate securable to a wall or ceiling. A magnet receiver mountable to a smoke detector is...
|
|
|
5578996 |
Long life detector
A long life, surface mountable ambient condition detector includes a non-replaceable battery for the purpose of providing power to the detector. The detector includes an activation switch mechanism...
|
|
|
5574436 |
Smoke detector including an indicator for indicating a missing primary power source which is powered by a substantially nonremovable secondary power source
A smoke detector having an audible missing primary power source indicator, capable of indicating the absence of a primary power source powering the detector is provided. A missing power source...
|
|
|
5570077 |
Ambient condition detector with high intensity strobe light
A drive circuit for use with an ambient condition detector limits heat dissipation and associated temperature rises in the presence of varying RMS values of an applied AC signal. The drive circuit...
|
|
|
5568129 |
Alarm device including a self-test reminder circuit
A smoke alarm device including self-test reminder circuitry is provided. The smoke alarm includes smoke detection circuitry and a smoke sensor, the functionality of which may be tested using a test...
|
|
|
5568130 |
Fire detector
An apparatus for detecting fire including a light source for generating light, a light sensor for receiving light from the light source and providing an analog signal representing the intensity of...
|
|
|
5565852 |
Smoke detector with digital display
An improved environmental alarm system has centralized control of local sensor display capabilities displays, on the sensor itself, a variety of sensor data including sensor address, and detected...
|
|
|
5557262 |
Fire alarm system with different types of sensors and dynamic system parameters
A fire alarm system utilizes outputs from different types of fire sensors, such as photoelectric smoke sensors or ionization type smoke sensors and combines those outputs by subtraction so as to...
|
|
|
5555455 |
Recessed fire detector
The application describes a method and apparatus for detecting fire. The apparatus includes a fire detector and a mounting means adapted for attachment to both existing structures and new...
|
|
|
5552775 |
Gaseous fluid handling apparatus
A smoke detecting system monitors smoke from different monitored areas. A main system fan is energized to draw air from all the monitored areas through a smoke detecting unit via individual pipes...
|
|
|
5546074 |
Smoke detector system with self-diagnostic capabilities and replaceable smoke intake canopy
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...
|
|
|
5537096 |
Fire detecting device
A device is adapted for attachment to and for detecting fire in ventilated appliances and machines. The device includes a measuring chamber in the form of a chimney having a lower cross sectional...
|
|
|
5530433 |
Smoke detector including ambient temperature compensation
A smoke type fire detector accurately detects a smoke density even when an internal temperature thereof changes. An internal temperature detecting unit detects an ambient temperature at a light...
|
|
|
5523744 |
Device for testing the operation of smoke detectors
A device (7) for testing the operation of smoke detectors (3) has a housing (1) which is open at one end and can be placed over the smoke detector (3). A test light source (5) in the housing...
|
|
|
5523743 |
Self-diagnostic smoke detector
The present invention provides a method for detecting whether an alarm circuit is operating outside its sensitivity range, the alarm circuit having a background signal and a preset alarm threshold...
|
|
|
5521585 |
Protector
A life saving system that allows escape from secured premises is provided. The system includes door/window locks that are normally held in the locked position by the presence of an electrical...
|
|
|
5519382 |
Mobile fire detector system
A mobile fire detecting system for detecting fire conditions at the incipient stage before visible smoke has been released having an air sampling fire detector mounted to a cart supported by...
|
|
|
5519367 |
Circuit breaker logic switch system
A logic switch take-up system is incorporated into a circuit breaker's electronic trip unit and signals the circuit breaker's programmer box that the electronic trip unit has been actuated and...
|
|
|
5502434 |
Smoke sensor
A separate type photoelectric smoke sensor having a light emitting section for emitting a light beam to a reflecting plate disposed at a certain distance from the light emitting section, a light...
|
|
|
5497144 |
Testing and adjustment of scattered-light smoke detectors
For testing or/and adjusting a scattered-light smoke detector as to sensitivity to smoke, a transparent body with included scattering centers is introduced into the measurement volume of the...
|
|
|
5489889 |
Universal earthquake safety valve
An improved system for shutting off utilities, such as gas and electricity, automatically in the case of an emergency, such as an earthquake, fire and the presence of hazardous fumes. The device...
|
|
|
5486811 |
Fire detection and extinguishment system
Early fire detection and extinguishment is provided by a plurality of fire etection units, each associated with a localized portion of a protected space and including condition sensors specifically...
|
|
|
5477903 |
Accordion storm shutter
An accordion storm shutter assembly includes a frame for installation in an opening in a building wall and at least one folding shutter supported by the frame. The shutter is made up of plural...
|
|
|
5477218 |
Smoke detecting apparatus capable of detecting both smoke fine particles
A light emitting device for projecting a light beam onto a monitor area, and a light receiving device, arranged so that a light beam is not directly received by the device, for receiving diffused...
|
|
|
5471200 |
Smoke detector protector
This invention is a protector for smoke detectors that can be mounted in atmospheres that have heavy airborne pollution that would normally cause a detector to malfunction. The protector is an...
|