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| Number | Title | Issue Date |
| 5936525 | Sensor for monitoring an article A sensor has a substrate with a first surface having a substantial area, a conductive trace defining a conductive path on the substrate between first and second locations, and an adhesive on the first surface for adhering the sensor to an object to be mon... | 08/10/1999 |
| 5847653 | Electric panel heat alarm with a thermally non-conductive mounting arrangement An heat alarm for an electric panel cabinet mounts a heat sensor within the enclosed area defined by the electric panel cabinet to monitor the temperature within the cabinet and sound an alarm if the temperature in the cabinet exceeds an upper temperature... | 12/08/1998 |
| 5686891 | System for locating an object A system for locating an object. The system includes an electronic device, a wireless transmitter for outputting a transmitted signal, and a receiver wherein one of the receiver or the transmitter is mounted within the electronic device and the other is p... | 11/11/1997 |
| 5515032 | Alarm device An anti-theft alarm to be concealed within an article likely to be stolen causes an alarm such as release of smoke, tear gas, dye. The alarm is responsive to continual motion and requires an initial motion followed by motion in each of a series of interva... | 05/07/1996 |
| 5499015 | Magnetomechanical EAS components integrated with a retail product or product packaging An inventory of goods is protected from theft by means of electronic article surveillance (EAS) markers integrated with items of the inventory. Each such item has a structural member in which a cavity is integrally formed. A respective magnetostrictive el... | 03/12/1996 |
| 5495229 | Pulsed electronic article surveillance device employing expert system techniques for dynamic optimization An electronic article surveillance system has a receiver with a plurality of receiving coils. Each coil in the system is treated as a separate detection unit with its own noise environment which is distinct from the noise environments of the other coils i... | 02/27/1996 |
| 5495231 | Metallic glass alloys for mechanically resonant marker surveillance systems A glassy metal alloy consists essentially of the formula Coa Feb Nic Md Be Sif Cg, where M is selected from molybdenum and "a", "b", "c", "d", "e", "f" and "g" are in atom percent, ... | 02/27/1996 |
| 5465080 | Infrared intrusion sensor An infrared intrusion sensor includes an array of infrared detectors, infrared collection optics, a focal plane scanning device having a dither adapted to repetitively scan the infrared radiation across the detector array, signal process devices, and loca... | 11/07/1995 |
| 5461367 | Electric panel fire alarm A fire alarm for an electric panel cabinet mounts a temperature sensor to monitor the internal cabinet temperature and sound an alarm if the inside of the cabinet becomes too hot. The alarm device preferably has an auxiliary battery power supply in case o... | 10/24/1995 |
| 5451930 | Emergency condition, door ajar, and temperature alarm for appliances A combination appliance door ajar, occupant emergency and abnormal temperature condition alarm system, in a single unit utilizing three visual indicators, one for each of the emergency conditions, and an audio alarm with multi-tone operation, for each of ... | 09/19/1995 |
| 5416469 | Method for prediction of times of voiding utilizing temperature measurements A temperature sensor (10), which is connected to a sampling/recording meter (14), is imbedded in a diaper (22). The meter measures and records the temperature of the sensor at time intervals of, for example, one minute over a predetermined period of, for ... | 05/16/1995 |
| 5402000 | Security system A room security system has a deterrent sprayer positioned on a ceiling of a room selectively inward and in front of an entryway to the room. A spray nozzle of the deterrent sprayer is directed at nose height of an average or anticipated person and adjusta... | 03/28/1995 |
| 5381137 | RF tagging system and RF tags and method RF tagging system (10) has a plurality of resonant circuits (13) on a tag (12). When the tag (12) enters a detection zone (14), the system determines the resonant frequency of each of the resonant circuits (13) and produces a corresponding code. Preferabl... | 01/10/1995 |
| 5349333 | Threat sector indicating warner A warning apparatus for monitoring a plurality of threat sectors includes a receiving antenna for each threat sector for receiving electromagnetic radiation, an alarm channel for each respective threat sector and an amplifier interconnected between an out... | 09/20/1994 |
| 5345219 | Anti-theft alarm for displayed garments A security system for use with garments and the like mounted for display on a display fixture includes an alarm box adapted to be mounted at a location proximate display fixture, with a key switch for arming and disarming an alarm contained therein. The a... | 09/06/1994 |
| 5345220 | Electronic security clip device An electronic security system provides electronic security for garments and the like. The system includes an electronic alarm box having a plurality of cable receiving jacks for receiving cables from individual objects. Also part of the system is a displa... | 09/06/1994 |
| 5345222 | Detection apparatus for security systems An electronic article surveillance system is provided that comprises a core-wound drive coil which produces an AC magnetic interrogation field, and a detection coil provided on one side with at least one element of a screening material, which detection co... | 09/06/1994 |
| 5339070 | Combined UV/IR flame detection system A flame detector unit contains a silicon photodiode that is sensitive to UV light waves and two lead selenide photoresistors that are sensitive to IR light waves. The electromagnetic bandwidth of each sensor element is restricted by an optical wave filter... | 08/16/1994 |
| 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 of the fire detector with a paper cup or a vinyl bag or su... | 08/16/1994 |
| 5337041 | Personal safety guard system for stray person or pet A personal safety guard system enables a guardian or caretaker of a person or pet to transmit an alarm condition signal from a hand-held unit carried by the guardian. When the alarm condition signal is received by a portable alarm unit adapted to be worn ... | 08/09/1994 |
| 5337039 | Proximity detection system with digital frequency variation detection means An oscillator which produces a continuous wave output signal on an antenna having a preset frequency. A detection circuit detects changes in the preset frequency resulting from proximity between the antenna and an object and when such an object is detecte... | 08/09/1994 |
| 5334971 | Security device kit, a security device and a security installation A pair of spaced elongate primary security members extend in a first direction, and each has a plurality of longitudinally spaced openings. The ends of a plurality of elongate secondary security members, extending in a second direction which is transverse... | 08/02/1994 |
| 5331308 | Automatically adjustable and self-testing dual technology intrusion detection system for minimizing false alarms A dual sensor intrusion detection system utilizes adaptive sensor detection techniques to reduce false alarms. The adaptive sensor detection techniques include increasing the stability of one sensor after the other sensor continuously detects motion witho... | 07/19/1994 |
| 5331325 | Remote control transmitter configured as an article of utility A key-configured transmitter design has a housing for containing the electronics thereof and a key blank which may optionally be cut to conform to the key shape of the vehicle ignition key or any other key the user might otherwise use on a regular basis. ... | 07/19/1994 |
| 5331313 | Marker assembly for use with an electronic article surveillance system A marker assembly adapted for use with an electronic article surveillance (EAS) system, and particularly for use with books to be monitored by an EAS system, includes a flat elongated, marker strip of low coercive force, high permeability ferromagnetic ma... | 07/19/1994 |
| 5325084 | Secure area ingress/egress control system The system includes a vestibule and a plurality of emergency exits interconnecting the secure area with the outside environment. The vestibule comprises a pair of security doors and the emergency exits comprise security doors having locking means and mean... | 06/28/1994 |
| 5325085 | Anti-intrusion alarm device for automatic user actuation at an entrance to a structure An alarm device has an actuating member for energising the alarm, the member being placed in its actuating state by passive action on the part of the user in the case of an emergency. A preferred form of actuating member according to the invention is a ri... | 06/28/1994 |
| 5323141 | Glass break sensor having reduced false alarm probability for use with intrusion alarms A sensor has a reduced probability of generating a false alarm in the presence of a strong high frequency acoustic wave, such a false alarm being caused by the saturation of the microphone which is part of a single microphone glass break sensor. The senso... | 06/21/1994 |
| 5321391 | Fish-bite indicator A fish-bite indicator has a rotary part which is engaged by a fishing line when the indicator is in use, such that longitudinal movement of the fishing line causes the rotary part to rotate. Sensor means are provided to produce a signal for every rotation... | 06/14/1994 |
| 5319356 | Apparatus for surveillance of bus-bar temperature An apparatus for surveillance of bus-bar temperature. At least one insulative holder made of ceramics or a like high heat conductive material holds a bus-bar. A thermistor or a like temperature sensor contacts the insulative holder and a control device re... | 06/07/1994 |
| 5315294 | Fluid metering verification system A positive verification of fluid flow from a reservoir through a metering pump is provided by monitoring the downstream fluid pressure fluctuations caused in the fluid conduit by inserting a pressure sustaining valve in it. A pressure switch or similar de... | 05/24/1994 |
| 5313193 | Object-marking means, method for making such means and reading device An identification system is disclosed which includes marks on an object for locating a region of the object which contains an identification in the form of either an etching or a responsive electronic circuit and a detection device for detecting the proxi... | 05/17/1994 |
| 5311166 | Security vestibule A security system for a vestibule and, more specifically, a security vestibule is equipped with monitoring devices to monitor the presence of an intruder. The monitoring devices transmit signals to warning devices, such as a speaker which broadcasts an au... | 05/10/1994 |
| 5311168 | Lock set with self-contained door alarm and annunciator system A self-contained alarm/annunciator system for a door provides an alarm function and a flashing LED when the door is locked to deter attempted burglary, and an annunciator function operable when the door is unlocked to indicate attempted door opening.... | 05/10/1994 |
| 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 detector detects motion and controls the delivery of an al... | 05/03/1994 |
| 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 presence of persons in the room, determines the season, sets b... | 05/03/1994 |
| 5307054 | Motion sensor circuit controller A seismic circuit controller includes a ring-shaped first conductor; a second conductor defining a concave conductive surface; a base for supporting the first conductor horizontally oriented above the second conductor, the second conductor being concave u... | 04/26/1994 |
| 5307053 | Device and method for alerting hunters A hunter alert device (9) for use by hunters when hunting wild game consists of transmitter means (21), receiver means (22), an antenna (11), a transceiver controller (20), and an indicator means (12). The device (9) operates by intermittently transmittin... | 04/26/1994 |
| 5307051 | Night light apparatus and method for altering the environment of a room A night light apparatus and method alters the environment of a room, particularly a darkened room, in response to an audio input such as a child's voice. The apparatus and method is adapted to provide a sense of security to a child in a room in order to i... | 04/26/1994 |
| 5304982 | Apparatus and method for detecting magnetic electronic article surveillance markers A dual frequency field is generated to produce an interrogation zone wherein the higher frequency is substantially higher than the lower frequency. The signal generated by the magnetic marker is detected, filtered and amplified. Time windows are selected ... | 04/19/1994 |
