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6181251 |
Combination smoke detection device and laser escape indicator
A combination smoke detection device and laser escape indicator provides a primary circuit that electrically connects a power source to a laser. The primary circuit has a smoke detector switch that...
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6172612 |
Smoke detector with remote testing, shutoff and powering means
The present invention discloses improved smoke detector devices. In a preferred embodiment, the invention takes the form of an improved smoke detector of the type having a ceiling-mounted, main...
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6166647 |
Fire detector
An improved fire detector is obtained by combining a conventional smoke particle sensor with a fire radicals odor sensor; the latter being an electronic nose tuned to respond to the presence of a...
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6160483 |
Composite battery-transmitter
A composite battery-transmitter for use in powering an electronic device has a set of terminals, a battery, a radio transmitter, and current sensing circuitry housed within a casing which is in the...
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6154142 |
Fire sensor and fire detecting method
A temperature difference calculator portion detects temperature difference indicating the rate of temperature rise when it receives heat generated by the fire. A correction factor deciding portion...
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6150943 |
Laser director for fire evacuation path
A device for projecting an escape path to direct evacuation from a fire includes a plurality of laser diode projectors secured within a housing and aimed to project successive rays or images along...
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6133839 |
Smoke detector apparatus with emergency escape indicator
A warning apparatus provides an alarm indication of the location of an exit from an enclosure or room in the event of a detected fire as well as the safety of the exit. An alarm housing is located...
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6124795 |
Detector interconnect system
A duct mountable smoke detector includes a smoke sensor, an alarm indicating output relay, and an air flow control relay. In the presence of an alarm condition, the alarm indicating relay is...
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6124796 |
Fire equipment bracket having integral locating beacon
A fire extinguisher bracket having a beacon for rendering the fire extinguisher conspicuous even in a darkened location. The bracket has structure for engaging the fire extinguisher and structure...
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6121885 |
Combination smoke detector and severe weather warning device
A combination smoke detector and severe weather warning device is housed in a common housing, such as a housing resembling that for a conventional smoke detector. The combination device includes a...
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6118381 |
Fire detection including an air movement device and pre-condition sensing
A system for the detection of fire in an apparatus or device having a fan and a pump, comprising means 20, 25 for detecting the presence of a pre-condition of fire, control means 30 for...
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6114964 |
Systems and methods for fenceline air monitoring of airborne hazardous materials
The invention provides systems for perimeter air quality monitoring that can establish background levels of target contaminants in ambient air prior to initiation of remedial activities. The...
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6114948 |
Safety apparatus for providing information to a fire fighter
A safety apparatus is disclosed for providing information to a fire fighter concerning the number of occupants of each room of a dwelling in the event of a fire. The apparatus includes an activator...
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6111511 |
Flame and smoke detector
A fire and smoke detector utilizes a statistical analysis of the near infrared radiation incident on it. The spectral radiation intensities incident on the fire detector are continuously measured...
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6107925 |
Method for dynamically adjusting criteria for detecting fire through smoke concentration
A fire detector is equipped with a smoke detector and electrical circuitry for declaring a fire alarm if a smoke concentration based fire detection criteria is satisfied. A CO 2 detector is...
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6104301 |
Hazard detection, warning, and response system
The invention provides a self-contained automatic fire detection, warning, and suppression life safety system having an extinguishant source and a fire detector coupled to an electronic processor....
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6097289 |
Intelligent speaker controller for a fire alarm system
A speaker controller for a fire alarm system including a control panel and at least one speaker to broadcast tone and/or voice signals during a fire alarm condition acts between the control panel...
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6097279 |
Retractable tamper resistant annunciator
An improved retractable tamper resistant annunciator that can be mounted flush in a supporting structure is described. The annunciator mechanism includes a housing that has an actuatable cover....
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6094135 |
Antitheft system and antitheft apparatus
A antitheft apparatus for hindering theft by an intruder when the intruder is detected in an alarm mode without operator. In a smoke generation system which is coupled with an alarm system...
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6094140 |
Portable alarm system
A portable alarm system for alerting a central station of an emergency. The portable alarm system includes a central unit for monitoring a desired area and a remote control unit for activating and...
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6087946 |
Christmas tree stand
A Christmas tree stand includes a substantially bowl shaped base component having a bottom wall, a continuous side wall depending therefrom and an open top in communication with an interior...
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6081197 |
Fire detector silenceable low battery pre-alarm
A method of monitoring the condition of the battery of a smoke or heat alarm so as to provide a warning of an impending low battery condition, said method including: means of providing a low...
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6077107 |
Terminal and door latch for battery operated devices
A battery terminal and door latch for battery operated devices. The battery terminal and door latch assembly prevents the closure of a battery compartment door when one or more batteries are...
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6078269 |
Battery-powered, RF-interconnected detector sensor system
A wireless, battery-operated detection system of a plurality of RF-interconnected detectors is operable over a CSMA-type network and intended to detect the occurrence of a local phenomena and...
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6075447 |
Smoke detecting christmas tree ornament system
A smoke detection system is provided including a plurality of smoke detector units each having a casing, an outlet cable, and an input cable. The cables of the smoke detector units are each...
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6064309 |
Swimming pool drowning prevention system
A swimming pool drowning prevention safety system. The swimming pool drowning prevention safety system comprises: an article wearable by a person, a radio frequency transmitting device coupled to...
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6060991 |
Detecting method and apparatus using a programmable memory device for storing a digitized reference value
A detecting apparatus includes a processing device connected to a sensor, a programmable memory device and an alarm device. The sensor generates a signal output that varies according to a detected...
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6057774 |
Smoke alarm with anti-dust screen
Smoke alarms that incorporate dust repelling screens exhibit improved performance with fewer false alarms. Effective screens include conductive strands combined with non-conductive elements.
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6052058 |
Filter integrity monitoring system
A method and system for monitoring integrity of a filter (25) of a smoke or fire detector system. The system has a detector chamber (14) into which light is passed from a light source incorporated...
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6049287 |
Door with integrated smoke detector and hold open
A door has a first outer face having an opening therein and a second outer face spaced a predetermined distance apart from the first outer face. A hold open device is located substantially between...
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6046441 |
Combustion activated device for disabling an electrical appliance
The present invention relates to a device for automatically disabling power to an electrical appliance as a fire erupts. The device includes a plurality of combustion product gas sensors disposed...
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6043750 |
Talking smoke detector
An angle measurement tool having several components that are assembled to form two moving parts wherein one of the parts is a straight edged member combined with angle measurement means and the...
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5999089 |
Alarm system
An alarm system that includes a number of alarm detecting devices wherein each alarm detecting device includes an alarm condition detecting circuit, a secondary alarm activation circuit, and an...
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5999094 |
Combination telephone and smoke alarm system
An in-building telephone distribution system has a multi-conductor telephone distribution cable, starting at the point where the telephone utility lines enter the building and extending from there...
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5990789 |
System and method for preventing smoke and fire damage to people and equipment in a clean room area from a fire
A method and system for preventing smoke and fire damage in a clean room within which a tool including an electrically powered element is located. The method includes the step of providing the tool...
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5990797 |
Ultraloud smoke detector
An ultraloud ambient condition detector incorporates a sensor in combination with a control circuit. An alarm indicating signal from the control circuit energizes a multi-frequency drive circuit...
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5986556 |
Fire detector
A fire detector capable of readily and accurately adjusting the sensitivity there of and of not erroneously outputting any fire signal is provided with a first-stage amplifying circuit having an...
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5973603 |
House/garage smoke detector
A house and garage alarm system is provided including at least one detector housing with a smoke and/or carbon monoxide detector situated therein. A power source is situated within the detector...
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5969437 |
Dual powered, smoke detector activated flashlight
A dual powered flashlight responsive to an audible smoke detector alarm includes a sound sensor for sensing an audible smoke detector alarm and producing an electrical alarm signal in response; a...
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5969604 |
System and method of adjusting smoothing
An ambient condition detector includes a sensor for a first ambient condition and a second, sensor which is responsive to a second ambient condition not necessarily correlated to the first...
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5966078 |
Battery saving circuit for a dangerous condition warning device
In a processor controlled, battery operated dangerous condition warning device employing a DC-to-DC converter, the converter selectively operates at two voltage outputs. A first output voltage is...
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5966079 |
Visual indicator for identifying which of a plurality of dangerous condition warning devices has issued an audible low battery warning signal
In order to facilitate determination of which of a plurality of dangerous condition warning devices is issuing an audio failing battery signal, the device incorporates a circuit including: a...
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5939994 |
Automatic surveillance device
A surveillance device, e.g. a fire alarm or an intrusion detector, includes a mount having a connector block, and an insert having a sensor assembly, a printed circuit board with evaluation...
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5936532 |
Smoke and carbon monoxide detector with clock
A smoke and carbon monoxide detector for mounting upon a wall, having a housing having a front face. A clock having clock hands and clock indicia is present on the front face. The detector...
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5936533 |
Method of automatic verification of smoke detector operation within calibration limits
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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5936531 |
Electrical fire sensing and prevention/extinguishing system
An electrical fire sensing and fire prevention/extinguishing system which senses properties of electrical fires in cabinets having electrical circuits or circuit boards and detects sparks for...
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5923260 |
Smoke detecting apparatus utilizing light signal pulse widths
The pulse width of a light reception pulse signal a from a light receiving device is detected, and the smoke density is detected based on a total pulse width of pulse widths per unit time period....
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5917420 |
Smoke/fire detector for the hearing impaired
An alarm apparatus for shaking a piece of furniture in response to detection of a physical occurrence, such as smoke, fire, CO 2 , or even a burglar, is provided. The apparatus includes a detector...
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5917417 |
Smoke detection system
A method of detecting the content of impurity in a gaseous medium has the steps of continually detecting impurities in the gaseous medium, emitting analyzing signals that vary with variation in...
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5914453 |
Air handler filter monitoring apparatus
A monitoring apparatus for alerting an operator to the need to change a temperature control system filter includes a mechanism for selecting and setting a primary period of filter use to assure...
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