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| Number | Title | Issue Date |
| 6492907 | Detector system A smoke detector apparatus that provides a generally continuous supply of electrical power to a smoke detector unit. The apparatus provides flexibility in locating the detector unit while still generally maintaining uninterrupted access to electrical powe... | 12/10/2002 |
| 6475439 | Sealed replaceable sensor A gas detector having a sealed sensor assembly is only exposed to the ambient atmosphere when the detector is to be placed in the service. The detector is placed in the service by removing an elongated planar adhesive backed sealing member. The gas sensor... | 11/05/2002 |
| 6459377 | Abnormal condition detecting system detecting abnormal condition of user at residence From a parameter setting unit, a user enters values for monitor start time (STime), check time (ETime) and a telephone number for notification (TelNo). The entered parameter values are stored into a storage unit. A door opening/closing detection unit dete... | 10/01/2002 |
| 6446926 | Smoke alarm retaining apparatus A smoke alarm retaining apparatus for making a smoke alarm easily reachable for servicing and testing. The smoke alarm retaining apparatus includes a base assembly that is adapted for coupling to a surface. An arm assembly is pivotally coupled to the base... | 09/10/2002 |
| 6445292 | Processor based wireless detector An energy efficient, easily manufacturable, multi-sensor detector incorporates a smoke sensor and a thermal sensor. A single die programmed processor with integrally formed storage circuits for programs and parameters senses sensor signals, from different... | 09/03/2002 |
| 6437698 | Smoke alarm device A smoke alarm device has an ASIC (1) with an integrated photo detector (3) and control circuit. The photo detector output is compared every ten seconds with an alarm threshold level in a comparator circuit (10), with a sensitivity-decrease threshold in a ... | 08/20/2002 |
| 6433700 | Multiuse on/off switch for hazard detector An installation-activated, battery-powered hazard device with an on/off switch mechanism and separable into complementary portions. A first of the portions contains essentially all operative electrical circuitry, including sensor(s), a source of power, an... | 08/13/2002 |
| 6426703 | Carbon monoxide and smoke detection apparatus A smoke sensor and a carbon monoxide sensor are integrated into a common detector housing. The smoke sensor is coupled to a smoke detector control integrated circuit which generates a binary output signal indicative of the presence of smoke. This signal i... | 07/30/2002 |
| 6420973 | Wireless smoke detection system A wireless detection system for monitoring a predetermined area for an emergency situation. The wireless smoke detection system includes a plurality of detector units strategically positioned throughout the monitored area. Each of the plurality of detecto... | 07/16/2002 |
| 6414599 | Smoke detector A smoke detector is adapted to be coupled to a fire monitoring unit, and includes a power consuming unit and a power supply unit. The power consuming unit is adapted to be coupled electrically to the fire monitoring unit so as to draw electric power there... | 07/02/2002 |
| 6407671 | Detection system for an electronic enclosure A method and apparatus is provided for detecting airborne particles in an electronic enclosure. The electronic enclosure may be used to house one or more electronic devices or components of an electronic system, such as a computer or data storage system. ... | 06/18/2002 |
| 6396406 | Self-cleaning oven having smoke detector for controlling cleaning cycle time An improved self-cleaning oven (10) is provided having an assembly (12) to control the cleaning cycle time of the oven (10) depending upon the degree of oven contamination and soil present therein. The assembly (12) includes a measuring chamber (16) as we... | 05/28/2002 |
| 6396405 | 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 microprocessor-based self-diagnostic circuit (200) that periodicall... | 05/28/2002 |
| 6384732 | Christmas tree smoke detector A smoke detector that is easily attached to the limb of a Christmas tree that includes a smoke detector circuit and an audible alarm circuit for generating an audible alarm in response to detecting smoke. The smoke detector circuit is capable of detecting... | 05/07/2002 |
| 6380854 | Remote alarm tester Remote Alarm Tester with A graphic display panel having an attached electronic sound sensing device, the sound sensing device capable of activating an LED light when a sound of seventy five Db or greater has occurred within a ten foot distance of the devi... | 04/30/2002 |
| 6377183 | Smoke detector having a moisture compensating device A smoke detector that is insensitive to moisture, such as for use in aircraft cargo bays and the like, is provided. The smoke detector includes a housing defining a chamber that is sealed from outside light sources yet is capable of receiving smoke. The s... | 04/23/2002 |
| 6377182 | Smoke detector with sensor having improved mounting configuration A smoke detector has a geometry that locates a sensor or sensors at or near a boundary layer of smoke movement thus facilitating smoke entry into the sensor and/or sensors. The sensors are mounted so as to protrude from the bottom of a cover instead of in... | 04/23/2002 |
| 6369716 | System and method for controlling air quality in a room A system and method of controlling air quality within a room. The method includes determining a first discharge air temperature setpoint based upon a room temperature setpoint and a first value indicative of an air temperature within the room, and determi... | 04/09/2002 |
| 6353395 | Interconnectable detector with local alarm indicator A low power local alarm indicating system for interconnectable detectors enables a viewer to, after the fact, determine which detector or detectors had previously gone into a local alarm. An alarm latch, such as a bistable multi-vibrator circuit, is set e... | 03/05/2002 |
| 6351219 | Photoelectric smoke detector A photoelectric smoke detector includes a photoelectric chamber having a housing fabricated from an electrically conductive material.... | 02/26/2002 |
| 6348871 | Adverse condition detection and notification apparatus The present invention provides an adverse condition detection apparatus that enables a user to test the apparatus in close proximity without having to endure fully operational alarm noise. In one embodiment, the apparatus includes a detector, a transducer... | 02/19/2002 |
| 6346880 | Circuit and method for controlling an alarm An alarm circuit (10) includes a sensor (11), a comparator (13), a control circuit (16), and a transducer (19). The control circuit (16) controls the transducer (19) and has three modes of operation: standby mode, alarm mode, and silence mode. The compara... | 02/12/2002 |
| 6336729 | Emergency light device A lighting system includes a base, and a cover pivotally connected to the base. In one embodiment, a portable flashlight is supported within a holder fixed to the base. The flashlight includes a housing enclosing a light bulb, a battery, and an electrical... | 01/08/2002 |
| 6329924 | Wearable electric field detector A wearable electric field detector has a housing mountable on a user's person and including a sensing circuit responsive to an electric field to generate a signal which varies in proportion to the strength of the sensed field, and an alarm circuit coupled... | 12/11/2001 |
| 6329904 | Apparatus and method for providing weather and other alerts An apparatus, including an alert device having a receiver, and method are provided for receiving location-specific alert information broadcast via particular telecommunication transmitters operating within a cellular, PCS, or other wireless telecommunicat... | 12/11/2001 |
| 6323780 | Communicative environmental alarm system with voice indication The battery powered or 120 VAC powered environmental condition detector of the present invention is designed to provide an early warning of the presence of an environmental condition (smoke or carbon monoxide gas or natural gas or propane gas or any multi... | 11/27/2001 |
| 6317645 | Suction-air system of a textile machine A suction-air system of a textile machine, especially a rotor spinning machine, has at least one suction-air conduit, at least one spark sensor for detecting flying sparks within a measuring extent of the suction-air, the sensor including a measuring devi... | 11/13/2001 |
| 6310556 | Apparatus and method for detecting a low-battery power condition and generating a user perceptible warning A system for detecting a low battery power condition and providing an audible warning of such a condition to a user of an electronic device such as a hearing aid is disclosed. In one embodiment, the battery output voltage is monitored and compared to a fi... | 10/30/2001 |
| 6307482 | Silenceable speaker with pre-announce tone detection An alarm signaling device (5) operable to produce an alarm signal and, possibly, communicate emergency announcements when triggered by a signal from a central alarm control panel. The alarm includes a speaker or other sound producing device and a silencin... | 10/23/2001 |
| 6300876 | Fire detector A fire detector which can be observed an operating state thereof from every direction and decrease a cost thereof as possible. The fire detector (10) comprises: the circuit board (32) in which the circuit for detecting a fire is formed; the LED (35) which... | 10/09/2001 |
| 6295001 | Tornado warning system A pager receiver based system provides a method and an apparatus for receiving and detecting a tornado alert or other severe weather alert from the National Weather Service, determining the region or grid block to which the alert applies, and broadcasting... | 09/25/2001 |
| 6292105 | Thermal ionization detector An ionization chamber that detects changes in temperature of electrical insulation with a corresponding change in voltage. This voltage change can be relayed through an operational amplifier and a comparator to a device receiving the signal, thus triggeri... | 09/18/2001 |
| 6288647 | Photoelectric smoke detector, and smoke detection section assembly A photoelectric smoke detector includes a smoke detecting section defining a smoke detecting space, a light emission section holder having a light-emission element disposed in the smoke detecting section, and a light receiving section holder having a ligh... | 09/11/2001 |
| 6285291 | Detection of airborne pollutants A smoke detection system comprises a manifold (4) connected to a series of sampling pipes (2). A fan (6) which draws a large volume of sampling air through the sampling pipes is connected to the inlet manifold and a small proportion of that air is directe... | 09/04/2001 |
| 6285290 | Self-cleaning oven having smoke detector for controlling cleaning cycle time An improved self-cleaning oven (10) is provided having an assembly (12) to control the cleaning cycle time of the oven (10) depending upon the degree of oven contamination and soil present therein. The assembly (12) includes a measuring chamber (16) as we... | 09/04/2001 |
| 6285289 | Smoke detector wrist kidnapper alarm A self contained, wearable personal protection device that incorporates a silent security alarm feature, a smoke detector alarm feature and, optionally, the feature of providing the time of day to the wearer is disclosed. The personal protection device wi... | 09/04/2001 |
| 6266579 | System for reducing disaster damage A system monitors and controls external utilities interacting with a site to mitigate hazards during disaster or other emergency situations. Upon the occurrence of a disaster or other emergency event, the system disconnects the external utilities from the... | 07/24/2001 |
| 6259363 | Detector removal signalling device A signalling device applies a pulsating signal to supply lines when a head is removed from a base. A monitoring system includes a plurality of such signalling devices and is responsive to the pulsating signal to indicate the absence of a head from its bas... | 07/10/2001 |
| 6255953 | Tornado warning system A pager receiver based system provides a method and an apparatus for receiving and detecting a tornado alert from the National Weather Service, determining the region to which the alert applies, and broadcasting an alert signal to a plurality of pager rec... | 07/03/2001 |
| 6239710 | Smoke detector A smoke alarm on the scattered radiation principle. Having a measuring field (5), accessible to smoke particles, in a measuring chamber, at which field the radiation direction of a radiation transmitter (6) is aimed, and scattered radiation occurring in t... | 05/29/2001 |
