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4808973 |
Window tape alarm interlock device
A contactless window tape alarm interlock device is provided that eliminates the need to manually connect or separate an alarm system and tape strips mounted on panes of glass contained in operable...
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RE32856 |
Alarm system
An alarm system is provided in which an alarm condition causes a cellular transceiver automatically to transmit a telephone call to an alarm monitoring station by over-the-air transmission of a...
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4801924 |
Transmitter programmer connect system
A security system for sensing the status of various security detectors used in, for example, home security such as fire, intrusion, emergency and appliance operation protection is disclosed. The...
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4792796 |
Electronic alarm apparatus
In electronic alarm apparatus for monitoring the presence or absence of objects within a given area, a transmitter attachable to an object, a shift register for storing a digital identification...
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4788527 |
Apparatus and method for device control using a two conductor power line
In a system in which a power supply provides power to a plurality of remote devices and sensoring devices, apparatus for applying an initial control signal to the power source lines activates a...
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4777474 |
Alarm system for the hearing impaired
The present invention is an alarm for the hearing impaired. A base station includes alarm receiving circuits for receipt of alarm signals. These alarm signals could be a telephone ringing signal, a...
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4772876 |
Remote security transmitter address programmer
In a home security system, a microprocessor-based controller is responsive to user initiated keyboard entries for programming a plurality of remote sensors via a serial data link with sensor-unique...
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4755792 |
Security control system
A security and control system for use in a home or building which utilizes a coded audio link between the entry detectors/transmitters and the relay modules, and a digital pulse coded power line...
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4754261 |
Security system
Methods and apparatus for evaluating installation of components of a wireless type of alarm system or the like that includes a plurality of satellite stations, each of which includes a sensor and...
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4754262 |
Multiplexed alarm system
A multiplexing method for an alarm system is disclosed in which a plurality of transponders connected in parallel by a pair of wires each monitors an opening and responds to a synchronizing signal...
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4743887 |
Fault locating system and method
A test system for microwave circuits such as employed in aircraft wherein a plurality of antennas are connected to a single processor whereby the continuity of the antennas and connectors between...
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4742336 |
Portable intrusion detection warning system
A portable intrusion detection, monitoring and alarm system is housed in a portable carrying case in the configuration of a briefcase with handle for convenient portability and inconspicuous...
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4737769 |
Fire detection alarm system
An alarm system utilizing existing electrical wiring in conjunction with an alarm box. An alarm signal is manually or automatically generated and is converted to an RF signal which is conducted...
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4737770 |
Security system with programmable sensor and user data input transmitters
A family of serially programmable integrated circuit transmitters for use in various sensor and user data input transmitters of a short-range radio frequency linked security system. Each...
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4734680 |
Detection system with randomized transmissions
A detection system having sending units for sending data signals representative of a condition, such as fire, smoke, intrusion, battery condition, or an emergency, to a central receiving unit. The...
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4733215 |
Remote control apparatus for a property protection device
Apparatus for automatic and semiautomatic remote control of an antitheft protection device of a property is provided. In the automatic embodiment, the apparatus includes a portable transmitter...
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4733223 |
Apparatus for monitoring a communications system
Apparatus for monitoring the status of and controlling faults at remotely-located components in a single line communications system wherein return data signals from the components are transmitted...
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4731810 |
Neighborhood home security system
A backup security system for the telephone company lines of a protected home located in a neighborhood in which all the homes have a.c. supply lines connected to a common power transformer. The...
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4725819 |
Fire detection system
A fire sensing unit is provided with apparatus which sends out a code identifying the type of sensor apart from transmission of the quantized signals of the analog output of the sensor of the...
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4724425 |
Security and alarm system
A method and apparatus are provided for transmitting from a radio transmitter which is part of a first system to a radio receiver which is part of a second system a message which includes a...
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4694282 |
Security monitoring system
A security monitoring system includes a radio transmitter which transmits information by a radio signal and a processing apparatus which receives the information transmitted by the radio...
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4692742 |
Security system with correlated signalling to selected satellite stations
A security system wherein a plurality of locations are monitored by sensors which transmit alarm signals to a central control station by radio or telephone, each alarm signal being encoded to...
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4683459 |
Alarm system test annunciator
Test apparatus for a wireless system is provided in which an audible annunciation is produced which is an accurate indication of the measured received signal strength. A signal is derived from the...
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4682144 |
Light transmission system for trains
A light transmission system for a train which includes sub-train compositions. Ths subtrain compositions each have end vehicles, one of which forms a head and the other of which forms a tail with...
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4673920 |
Fire alarm control and emergency communication system
A multistationed integrated life safety system in which each station will be situated at a diffferent location and have complete capabilities in terms of local fire protection, fire detection,...
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4673974 |
Image transmission system
Plural television cameras situated at monitored sites, each assigned with a particular code, generate image signals of the sites. An image signal transmitting unit receives those signals and...
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4672365 |
Security system with digital data filtering
A security system having one or more sending units for transmitting a digitized r-f signal representative of a condition such as fire, smoke, intrusion, battery condition, an emergency, or other...
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4670989 |
Touch probe using microwave transmission
Automated gaging apparatus for use with a machine tool system is disclosed. In a preferred embodiment, the apparatus is adapted for use with a touch probe and includes circuitry for frequency shift...
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4665385 |
Hazardous condition monitoring system
Hazardous condition warning indications are transmitted from a site to a remote location on a conventional audio communication link. A variety of hazardous conditions including unconsciousness or...
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4665384 |
Signal-transmitting junction unit of hazard alarm system
A signal transmitting junction unit for a hazard alarm system includes a signal transmission control unit, a zone line circuit connected to an electric source and having at least one hazard sensor...
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4661804 |
Supervised wireless security system
Apparatus and method for communication by use of a single FM radio frequency, from a plurality of transmitters to a central receiver in a security alarm system or similar system. A transmitter's...
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4660023 |
Locality supervision system
A supervising system for a group of localities like homes. A local equipment including a transmitter, a receiver and an emergency detector is installed in each locality. Identification signatures...
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4658357 |
Time and accounting system
A system for automatically logging the interaction between a plurality of objects. Small, self-contained transmitting beacon units are attached or carried by a first set of objects. These beacon...
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4654638 |
Security monitoring system
A monitoring system of the type suitable for use in monitoring signals from security installations or networks includes a central control station serving a plurality of users and to which the users...
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4652859 |
Alarm reporting system
An alarm system for monitoring alarm conditions and for generating alert signals responsive thereto. The alarm system includes alarm signal processing circuitry for generating signals responsive to...
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4651139 |
Method for monitoring the drift of an anchored vessel and device for implementing the method
The drift of a boat which lies at anchor is monitored by a piezoelectrical accelerometer which is fixed to the anchor and will be subjected to sharp accelerations in case the anchor is pulled over...
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4647914 |
Security apparatus and system
A user friendly security apparatus and system for use in the home or small business. A logic architecture is provided which permits the monitoring of not only intrusion but also fire, special...
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4641127 |
Security and fire protection system
A plurality of smoke (or heat) detector-transmitter units (17, 19) and/or a plurality of intrusion detector-transmitter units (21) are mounted at various positions throughout a premises to be...
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4631527 |
Transmitter-receiver coded security alarm system
A transmit-receive burglar alarm system provides for code changing so that the user may readily change the transmitted code to which the system will respond. The transmitter is battery powered, and...
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4623876 |
Alarm system to transmit detection information detected by a detector due to a radio system
When a transmitter receives an abnormal detection signal from a leaked gas alarm or the like, the transmitter starts the transmitting operation and repeatedly transmits the detection information...
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H000154 |
Flash prefire detector
A circuit having indication lights for demonstrating when a flash trigger pulse has been fed to an X-ray photographic system or the like, is provided. The invention is especially useful in noting...
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4617555 |
Receiver for audible alarm
A receiver to detect the audio tone emitted by an activated smoke alarm. The receiver employs an electret condenser microphone to monitor ambient sound. The output of the microphone is applied to...
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4617561 |
Emergency light and smoke alarm system
An emergency light and smoke alarm system comprises a smoke detector mounted in a housing for detecting smoke and producing an audible and visual signal in response to the detected smoke. A...
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4616214 |
Security system
A CATV system includes a security system incorporated therein through which a subscriber can automatically or manually transmit various warning or emergency signals to the CATV base station....
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4612535 |
Add-on alert system
An add-on alarm system for use in conjunction with an audio detector. The system includes an indoor unit that is audibly coupled to the detector and an outdoor unit containing an independent power...
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4611198 |
Security and communication system
A security and communication system permits the location of signaling portable radio frequency transmitters which may be carried by individuals. If an individual signals with his portable frequency...
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4603325 |
Evaluation apparatus
The invention provides apparatus for evaluating installation of components of a wireless type of alarm system or the like that includes a plurality of satellite stations, each of which includes a...
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4602246 |
Intruder detector apparatus
Detectors (11a-d) are located at a plurality of locations and include go, no-go decision processor apparatus for subjecting outputs of the detectors (11a-d) to a go, no-go decision process. First...
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4602357 |
Coded acoustic alarm transmitter/receiver system
The coded acoustic alarm transmitter/receiver system includes a transmitter for selectively providing both an audible alarm in the audio frequency range and a silent alarm in the ultrasonic...
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4598272 |
Electronic monitoring apparatus
The apparatus not only enables the monitoring person to monitor the whereabouts of the monitored person, pet or article, but also to locate the latter if he, she or it becomes separated from the...
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