Abstract: An alert system for providing an alert of an actual or impending emergency to homes, businesses and the like. The alert system is used in cable system network over which communication signals are transmitted to a receiver remote from the transmitter. Such communication signals have associated therewith at least one distinguishable modulation frequency. The alert system includes a mechanism for receiving an alert request and a transmitter for transmitting an alert signal in response to the alert request. The transmitter is coupled with the cable system and generates an alert signal which is modulated at a frequency distinguishable from the frequencies of the communication signals. The transmitter includes a sideband filter to reduce the subharmonics generated around the alert signal frequency. The receiver includes a mechanism for detecting a valid alert signal from the alert signal received and for generating an alarm signal therefrom.

Abstract: A security system comprising a plurality of remote wireless units, a central control unit and an adaptive console for translating messages in radio frequency signals into messages in signals suitable for transmission over a wire in order to augment the wireless capability of the system. The adaptive console has a wireless receiver for receiving the radio frequency signal, which includes identification and status information from a wireless remote units. The adaptive console also has a processing unit which translates the identification and status information from the radio frequency signal to corresponding function data derived from a mapping of valid identification and status information to function data, the function data representative of a function to be performed by the security system. The adaptive console also has a transmitter which transmits a signal over a wired connection which includes the corresponding function data to the central control unit or a wired security unit.

Abstract: Determination is made as to whether or not a self-diagnostic tester 13 is connected with a K line 14. When the result of the determination indicates that the self-diagnostic tester 13 is not connected with the K line 14, data indicating vehicle-operating conditions are obtained from an engine ECU 11 and the like through a K line 14.

Abstract: A vehicle control system includes a data communications bus; at least one vehicle device being selectively operable by a user to generate signals on the data communications bus; and a controller, such as a security controller, connected to a receiver and being responsive to a remote transmitter. The controller is also preferably switchable to a desired mode from among a plurality of modes based upon signals generated on the bus by selective operation of the at least one vehicle device by the user. The controller may be an aftermarket security controller that is very easily added to the vehicle and uses an existing vehicle device to switch between modes, without requiring the installation of one or more hardwired and dedicated switches, for example. The at least one vehicle device may comprise at least one desired vehicle switch for also controlling a vehicle operation other than switching the security controller.

Abstract: A security alarm system cooperates with a remote monitoring station to improve the reliability of the alarm system. The alarm system includes a control panel which during communications with the remote monitoring station, receives information used for the operation of the system and preferably provides information for storage by the remote monitoring station which information is recovered by the control panel if necessary.

Abstract: A control system includes a transmitter and a receiver for receiving signals from the remote transmitter, and a multi-vehicle compatible controller cooperating with the transmitter and receiver. The multi-vehicle compatible controller preferably generates at least one set of command signals on the data communications bus for the at least one vehicle device. The at least one set of command signals may include at least one working command signal and at least one non-working command signal for a given vehicle to thereby provide compatibility with a plurality of different vehicles. Multiple signals or codes can be generated on the data communications bus, and only that code for the given vehicle will cause an operation or response from the vehicle device. Such an arrangement provides for a relatively simple and straightforward approach to interface with a vehicle having a data communications bus.

Abstract: An indexed database alarm and monitor, for assigning each unit of a multiple unit system a labeled index of pre-selected designations, and or descriptions of use by voice-playback and reporting, by voice-playback of first detecting units designation and or description of use by each unit in the system. Being comprised of the following components, a fire sensor, an alarm IC with piezo horn and detection I/O, a multiple position encoder, a 8-bit dip switch, a radio frequency decoder transmitter and receiver encoder with antenna switch and antenna, a voice-playback device with speaker and a microcontroller all housed within one unit. A complete system being comprised of a plurality of said units, equal to the number of positions on the multiple position encoder, each units multiple position encoders position being different and generating a different index.

Abstract: A personal security system locates emergency transmissions and tracks changes in location between successive transmissions. The transmissions are repeated automatically over a predetermined time interval exceeding five minutes. A plurality of fixed receivers are provided in predetermined positions in a protected region for detecting the emergency transmissions and a central monitoring station locates the transmissions from information provided by the detecting receivers. The monitoring station tracks successive transmissions and displays multiple locations as icons on a monitor. The icons vary in size based on relative transmission time and are stacked so any overlapping icons representing more recent transmissions are on top.

Abstract: An apparatus combination useful in carrying out work within hazardous environments, especially radioactive environments. The combination includes (a) a plurality of portable input modules, each portable input module being capable of receiving video, audio and radiation dosimetry communications data and transmitting that data via a single portable input module data transmission cable, (b) a relay module for receiving the communications data from the plurality of portable input modules via each of the single portable input module's data transmission cables and for transmitting that data via a single relay module data transmission cable, and (c) a communications output station for receiving the communications data from the relay module via the single relay module data transmission cable and for translating that data into user recognizable video, audio and radiation dosimeter data output forms.

Abstract: An ambient condition detector incorporates a control switch which can be actuatable by one of a plurality of circumstances. In a response to an actuated switch, control circuitry of the detector selects at least one predetermined function or process to carry out. The control circuitry can include a programmed processor and a storage unit. A plurality of processes or functions can be stored in the storage unit. One or more of the processes can be selected for execution in response to signals received from the control switch. The switch can be closed in response to manual actuation, a magnetic field, or incident electromagnetic radiation such as RF signals or a beam of light.

Abstract: In response to an emergency event, an emergency announcement system (100) causes display of an escape route based upon a room location. A sensor (104) detects an emergency event. The sensor data (106) from the sensor relating to the emergency event is transmitted to an emergency server (122), the emergency server (122) determines the escape route and the escape route is sent to a display device (118) for use by the building occupants to escape the emergency.

Abstract: A building alarm system includes addressable notification appliances connected to a system controller, with each notification appliance having a status indicator and an alarm indicator. The status indicator, such as an LED, provides for system test modes that avoid disruption of building occupants. To test the alarm system, the system controller selects which notification appliances to operate in response to a test alarm input and communicates to each selected appliance an instruction to operate its associated status indicator without operating its associated audible or flashing visible alarm indicators. In a troubleshooting mode, the system controller polls each of the notification appliances and receives an answer in response to the poll from any of the appliances. The controller operates the LED indicators of those appliances which answer the poll.

Abstract: The present invention provides a remote detection device including a conventional measurement device, such as a thermostat, having an internal contact which is wired in series with a resistor and two wires of a standard telephone line. When the measurement device reaches or surpasses a predetermined set value, such as a predetermined temperature, the measurement device will close the internal contact such that the resistor will short the telephone line. Accordingly, when the ambient condition has reached or surpassed the predetermined set value, the owner or manager of a building will receive a busy signal when dialing a telephone line connected to the remote detection device. In another embodiment the remote detection device may comprise a computer program component which periodically monitors the status of a communication line connected to the measurement device at the remote location.

Abstract: A fire protection system for determining the existence of hazardous conditions within a building. The system includes a central monitor node for monitoring and displaying system status information. At least one zone node is located remote from the monitor node, and defines a plurality of fire protection zones within the building. A plurality of detectors are arranged within each zone at respective predetermined address locations. Each of the detectors includes a microcontroller for detecting and storing information indicating an occurrence of a hazardous event. The detectors have a normal negative state wherein no occurrence of a hazardous event is detected, and a positive state wherein the occurrence of a hazardous event is detected.

Abstract: A fire alarm system is obtained which can simplify the structure and reduce the costs by specifying the number of terminal devices in a supervision region and setting a plurality of fire zone indications in correspondence with the terminal devices of the specified number by one to one, and which can finely supervise the contents of a standby power supply and improve the reliability of the equipment. In a fire alarm system in which such as a plurality of terminal devices 251 for fire supervision to which different addresses are allocated, respectively, are connected to a fire control and indicating equipment 101, and the fire control and indicating equipment calls the terminal device by its address to collect fire information from the called terminal device, the fire control and indicating equipment includes a plurality of fire zone indicator lamp 112 corresponding to the plurality of terminal devices by one to one.

Abstract: A vehicle security system, for a vehicle of a type including a data communications bus, preferably includes at least one security function control circuit and associated interface for interfacing to the data communications bus. The system also includes a security system controller and associated interface for interfacing to the data communications bus, and a desired signal enabling circuit for enabling the security system controller to operate using a desired set of signals for a corresponding desired vehicle from a plurality of sets of signals for different vehicles. This, in turn, permits the security system controller to communicate with the at least one security function control circuit. The at least one vehicle function control circuit may be an engine control circuit, such as a starter control circuit, or at least one of an ignition and fuel control circuit. The vehicle function control circuit may also be a door lock control circuit.

Abstract: A monitoring system in an alarm apparatus includes a central panel for controlling operation of the alarm apparatus, first and second terminals, the second terminal including a communication device, such as a microcontroller, to communicate with the central panel. A communication link comprising fiber-optic cables is further provided to connect the first and second terminals. The first terminal includes a signaling device to signal to the communication device when there is a break in the communication link. Responsive to the signal, the communication device signals to the central panel that there is a break in the communication link. In accordance with other aspects of the present invention, a plurality of intelligent peripherals, such as detectors and audible and visual alarms, are connected and controlled by the central panel via the fiber-optic cables.

Abstract: A multi-processor communication system includes a plurality of processors in bidirectional communication with one another. One processor can transmit a message to an intended recipient. The message can be correctly received by other processors. In the event that the intended processor does not correctly receive the message and transmits a failure indicating message, the other processors, upon detection of the failure will retransmit the message. Ambient condition sensors can be coupled to some of the processors.

Abstract: The alarm system has an alarm unit for ready access at a point of entryway which communicates with a line seize module located in a secure location. The alarm unit has a transmitter receiver, a control panel function, a key pad, and an input/output port for connection to telephone wiring for communicating with the line seize unit. The line seize module includes its own input/output communication port connected to the wiring of the local telephone line and as such, is in direct communication with the alarm unit. Communication is separate and distinct from normal telephone communication and preferrably is at a high frequency above the audible range. This allows the alarm system to communicate between components while still allowing full conventional use of the telephone lines. The line seize module also includes control logic, a line seize arrangement and an automatic dialer.

Abstract: A detected information display system in a fire detecting system of the present invention which is equipped with detectors arranged in a warning area and a control panel and achieves a specified information display on a physical quantity detected by the detectors, includes a secondary conversion part to convert the physical quantity detected by the detector to the specified level, a conversion level storage part to store the converted level, an extraction part to extract the maximum level from the levels stored in the conversion level storage part, and a display part which is equipped with level display parts, and keeps the level display part corresponding to the converted level and the level display part corresponding to the maximum extracted level in a visually different condition from each other. The maximum detected physical quantity and the set value to indicate the abnormal level can be rapidly grasped, and the displays of a plurality of detectors can be displayed in an integrated and related manner.

Abstract: A vehicle security system includes a vehicle security sensor and associated sensor bus interface, an alarm indicator and associated alarm indicator bus interface, and an alarm controller and associated alarm controller bus interface for interfacing the alarm controller. The interface to the bus may include an inductive coupler to avoid the need to hard wire aftermarket components and devices. The vehicle security system is for a vehicle of a type including a data communications bus connecting a plurality of vehicle devices. The security system preferably further includes a desired signal enabling circuit for enabling the alarm controller to operate using a set of desired signals for a desired vehicle from among a plurality of possible sets of signals for different vehicles.

Abstract: A security system comprising a plurality of remote wireless units, a central control unit and an adaptive console for translating messages in radio frequency signals into messages in signals suitable for transmission over a wire in order to augment the wireless capability of the system. The adaptive console has a wireless receiver for receiving the radio frequency signal, which includes identification and status information from a wireless remote units. The adaptive console also has a processing unit which translates the identification and status information from the radio frequency signal to corresponding function data derived from a mapping of valid identification and status information to function data, the function data emulating data generated by keypresses on a keypad that is representative of a function to be performed by the security system.

Abstract: A security system comprising a plurality of remote wireless units, a central control unit and an adaptive console for translating messages in radio frequency signals into messages in signals suitable for transmission over a wire in order to augment the wireless capability of the system. The adaptive console has a wireless receiver for receiving the radio frequency signal, which includes identification and status information from a wireless remote units. The adaptive console also has a processing unit which translates the identification and status information from the radio frequency signal to corresponding function data derived from a mapping of valid identification and status information to function data, the function data representative of a function to be performed by the security system. The adaptive console also has a transmitter which transmits a signal over a wired connection which includes the corresponding function data to the central control unit or a wired security unit.

Abstract: Overhead garage door position monitoring systems including one or more smoke detector sensors, carbon monoxide sensors, thermal sensors and/or magnetic sensors to measure the smoke concentration level, the carbon monoxide level, the temperature and the position of an overhead garage door, respectively. These sensors are controlled by and report the status of parameters to a controller, such as a microcontroller. This controller is programmed to report the status of parameters through, for example, a liquid crystal display (LCD) and/or a voice synthesizer and an audio speaker.

Abstract: An interactive security system includes a host controller, a security service center coupled with the host controller to receive an emergency signal from the host controller, a client society comprising a client that consists of an auxiliary controller coupled with the host controller. An auxiliary controller includes a button and a lot of lights equal to the total number of the clients in the client society, wherein every client has an identification light indicating the client's number. The identification light is green in normal situation. When a client presses the button, a light indicating the identification of the emergency client's number illuminating with red on the every auxiliary controller of the client society. The alarm system of the auxiliary controller is turned on and in accordance with beep-beep sound and then transmits an emergency signal to the host controller.

Abstract: There is provided in accordance with the present invention an operation system for monitoring transmission devices, comprising: a memory storing an alarm monitoring program including, a manager process for receiving a first autonomous alarm notification transmitted from the transmission devices, a MIB management process for transmitting the first autonomous alarm notification transmitted from the manager process and storing the first autonomous alarm notification to a database, and a monitoring process for receiving the first autonomous alarm notification transmitted from the MIB management process and monitoring the first autonomous alarm notification, and the MIB management process further including, a re-transmission thread for storing the first autonomous alarm notification in the database; and a response reception thread for receiving the first autonomous alarm notification transmitted from the manager process and for transmitting the first autonomous alarm notification to the re-transmission thread and

Abstract: A fire detection and alarm system has fire detecting devices of different types (T1,T2) and alarm means connected across supply lines. Both types of device normally apply a high impedance across the supply lines in a standby condition, and a low impedance in an alarm condition. The fire detecting devices are operable by a first voltage. This is lower than a second voltage applied, by a CCU, to the lines in an alarm condition for operating the alarm means. The alarm means respond to operating current supplied under different conditions to give respectively different kinds of fire warnings. Each first and second type of fire detecting device has current limiting means for differently limiting the respective current drain on the supply lines in the alarm condition.

Abstract: A security system includes a control center, a controller installed in a car, a plurality of base stations installed in gas stations and houses, and a releaser. When a car owner finds that his/her car has been stolen, he/she can make a telephone call to the control center. The control center is guided to call the controller through a pager network and command the controller to enter into a searching mode to transmit a searching signal to search for a base station. After a base station receives and confirms the searching signal, the base station transmits a control signal to activate the controller to stop supplying gas and electricity to the car whereby the car is locked and located. In addition, each base station is integrated with a home security and remote control system to enhance its capability.

Abstract: 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 energized thereby producing an alarm indicating signal. The air flow control relay is also energized thereupon changing an operative state of the respective air flow control element. Finally, a signal is coupled to an input/output interconnect port and, via an interconnect link, to other detectors coupled to the link. Other detectors coupled to the link which receive an alarm indicating interconnect signal energize the respective air flow control relays thereby changing operative state of the respective air flow control devices. The other detectors do not enter an alarm state. This allows for easy determination of the detector that initiated the alarm.

Abstract: The present invention provides a remote detection device including a conventional measurement device, such as a thermostat, having an internal contact which is wired in series with a resistor and two wires of a standard telephone line. When the measurement device reaches or surpasses a predetermined set value, such as a predetermined temperature, the measurement device will close the internal contact such that the resistor will short the telephone line. Accordingly, the owner or manager of a building will receive a busy signal when dialing the telephone line connected to the remote detection device. The device, therefore, allows the building owner or manager to check on the condition of the building at any time. The device is not susceptible to breakdown or malfunction due to its simplicity. Moreover, the device is not susceptible to shutdown because the device is passive and does not require connection to a power source for operation.

Abstract: A emergency trunk release apparatus of disclosed, comprised of comprising a lock bypass panel, located inside a trunk compartment. The lock bypass panel consists of an activation switch that is wired in parallel with a vehicle's electric trunk release such that its actuation will cause the trunk to open. The activation switch is a depression-type activation switch with an enlarged pad surface that allows it to be found easily in a dark trunk environment. The activation switch may be illuminated by any conventional means, so as to facilitate viewing in the darkness of the trunk. The present invention also includes a manual deactivation switch that takes the present invention temporarily out of service during times where cargo may accidentally activate the activation switch. It is envisioned that the present invention may be installed as a retrofit kit on existing automobiles or as original equipment on new vehicles.

Abstract: A vehicle security system includes a vehicle security sensor and associated sensor bus interface, an alarm indicator and associated alarm indicator bus interface, and an alarm controller and associated alarm controller bus interface for interfacing the alarm controller. The vehicle security system is for a vehicle of a type including a data communications bus connecting a plurality of vehicle devices. The security system preferably further includes a desired signal enabling circuit for enabling the alarm controller to operate using a set of desired signals for a desired vehicle from among a plurality of possible sets of signals for different vehicles. Accordingly, the desired signal enabling circuit permits the alarm controller to communicate with the vehicle security sensor and the alarm indicator via the data communications bus so that the alarm controller is capable of operating the alarm indicator responsive to the vehicle security sensor.

Abstract: 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 to each location at which a telephone outlet is wanted, at which a smoke alarm is wanted, and/or at which one of numerous other devices (e.g., door chime) might be wanted. At a suitable point along the cable, a first pair of the cable's conductors is connected with the power output terminals of a Class-2 (or Class-2-equivalent) DC power supply, whose power input terminals are connected with an ordinary electric utility power line. Thus, at any point along the cable, the first pair of conductors may be accessed and used as a Class-2 DC power source. A second pair of the cable's distribution conductors is used for distribution of the telephone signals.

Abstract: 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 housing. An alarm housing is included which is connected to the corresponding detector housing and resides distant therefrom for indicating to a user that either smoke and/or carbon monoxide has been detected by the detector.

Abstract: A telecommunity alarm system having a plurality of security surveillance modems that can be connected to a telecommunication network via an analog or digital subscriber terminal port, the security surveillance modems forming a group of a predetermined size. The security surveillance modems each have a first memory for storing telephone numbers of the other modems in the group, a second memory for identifying the particular modem and a programmable control unit. The modems are designed to dial automatically, in the event of an alarm, the other security surveillance modems belonging to the group and signal the alarm status.

Abstract: A signal transmission apparatus including a main unit having a signal transmission terminal, and one or more sub units (or repeaters) each having first and second signal transmission terminals. A loop connection line is provided between the main unit and a first sub unit, and additional loop connection lines are provided between subsequent pairs of sub units to convey signals from the main unit to each of the sub units, and from each of the sub units to the main unit. The main unit includes a controller, a signal generator for generating and sending a first signal to one of the sub units, and a signal processor for processing a second signal returned from one of the sub units in response to the first signal. Each of the sub units includes a controller, a destination signal determination section, and a signal transfer section for selectively capturing and transferring a signal according to its destination address.

Abstract: The operating status of a plurality of laundry appliances including washing machines and/or driers is sensed, and a controller generates and transmits corresponding status signals to remote transceivers which include visual or audio indicators for indicating the information. Each transceiver can interrogate the controller to determine the status of the appliances, with the status being transmitted only to the interrogating transmitter. Each transceiver can also transmit a reservation signal to the controller to reserve a selected appliance for a predetermined period of time. The controller also transmits status signals for the selected appliance only to the transceiver of the user who reserved the appliance when the operating cycle is finished, or at a predetermined period of time prior to the end of the operating cycle. The transceivers can communicate with the controller over a telephone line, or over A.C. power lines.

Abstract: A vehicle security system includes a vehicle security sensor and associated sensor bus interface, an alarm indicator and associated alarm indicator bus interface, and an alarm controller and associated alarm controller bus interface for interfacing the alarm controller. The vehicle security system is for a vehicle of a type including a data communications bus connecting a plurality of vehicle devices. The security system preferably further includes a desired signal enabling circuit for enabling the alarm controller to operate using a set of desired signals for a desired vehicle from among a plurality of possible sets of signals for different vehicles. Accordingly, the desired signal enabling circuit permits the alarm controller to communicate with the vehicle security sensor and the alarm indicator via the data communications bus so that the alarm controller is capable of operating the alarm indicator responsive to the vehicle security sensor.

Abstract: An interface unit interposed between a central alarm panel and a string of smoke detectors interconnected by a three-wire bus. Two wires of the bus carry AC power and the third wire is an interunit signalling wire. When an individual detector senses a smoke condition, it places a voltage on the signalling wire. The other detectors sound their alarms upon detecting this voltage. The interface unit senses this voltage and notifies the central alarm panel, with the sensing circuitry having a variable high input impedance and being powered solely from the signalling wire. The interface unit includes a test button which, when actuated, disables communications to the central alarm panel for a predetermined period of time. During this time, the interface unit places a periodic signal on the signalling wire, which causes all of the detectors to "beep" while that signal is present. The interface unit also senses the absence of AC power on the bus for notifying the alarm panel of such AC power failure.

Abstract: The operating status of a plurality of laundry appliances including washing machines and/or driers is sensed, and a controller generates and transmits corresponding status signals to remote transceivers which include visual or audio indicators for indicating the information. Each transceiver can interrogate the controller to determine the status of the appliances, with the status being transmitted only to the interrogating transmitter. Each transceiver can also transmit a reservation signal to the controller to reserve a selected appliance for a predetermined period of time. The controller also transmits status signals for the selected appliance only to the transceiver of the user who reserved the appliance when the operating cycle is finished, or at a predetermined period of time prior to the end of the operating cycle. The transceivers can communicate with the controller over a telephone line, or over A.C. power lines.

Abstract: Disclosed is an improved fire alarm system for an information providing system having a plurality of terminal devices for providing information to a plurality of operators, respectively. The fire alarm system is provided with a fire detecting sensors. If a fire is detected, a predetermined signal is transmitted to a controller. The controller controls each of the plurality of terminal devices to indicate an alarm information to the operator when the predetermined signal is received.

Abstract: A multi-functional intrusion warning system is used directly in the conventional circuitry of a building such as a home, small business or the like, having a conventional AC power source, a plurality of branch circuits and a circuit breaking means (located intermediate the power source and the branch circuits for interrupting the current to any branch circuit experiencing a current surge) to provide the building with a means of controlling the current to certain or all of the branch circuits which enables the power to be cut off to these branch circuits and then turned back on due to an occurrence detected by a motion, sound, smoke, heat, and/or telephone call activated or similar detection device. The lighting, alarms, and/or other electrical devices on these branch circuits are activated when the detection device activates the control unit of the intrusion warning system.

Abstract: The operating status of a plurality of laundry appliances including washing machines and/or driers is sensed, and a controller generates and transmits corresponding status signals to remote transceivers which include visual or audio indicators for indicating the information. Each transceiver can interrogate the controller to determine the status of the appliances, with the status being transmitted only to the interrogating transmitter. Each transceiver can also transmit a reservation signal to the controller to reserve a selected appliance for a predetermined period of time. The controller also transmits status signals for the selected appliance only to the transceiver of the user who reserved the appliance when the operating cycle is finished, or at a predetermined period of time prior to the end of the operating cycle. The transceivers can communicate with the controller over a telephone line, or over A.C. power lines.

Abstract: A monitoring apparatus for an alarm device for situations wherein the alarm device is provided at a location remote from the alarm device drive side, which can verify from the alarm device drive side if an audible alarm has sounded. The drive of the alarm device (1) is stopped by switching off a drive switch (12) on the alarm device drive side (A). After stopping the drive of the alarm device (1) an audible alarm generation sensed signal from the response device (2) on the alarm device side (B)is received at the alarm device drive side (A) though the feeder (a). Then, after the audible alarm generation sensed signal has stopped, and on receipt of a verification signal verifying that the alarm device drive side (B) has returned to the original condition, a verification output (F3) for the audible alarm generation is generated at the alarm device drive side (A).

Abstract: A multi-functional intrusion warning system is used directly in the conventional circuitry of a building such as a home, small business or the like, having a conventional AC power source, a plurality of branch circuits and a circuit breaking means (located intermediate the power source and the branch circuits for interrupting the current to any branch circuit experiencing a current surge) to provide the building with a means of controlling the current to certain or all of the branch circuits which enables the power to be cut off to these branch circuits and then turned back on due to an occurrence detected by a motion, sound, smoke, heat, and/or telephone call activated or similar detection device. The lighting, alarms, and/or other electrical devices on these branch circuits are activated when the detection device activates the control unit of the intrusion warning system.

Abstract: A bridge failure alarm system designed to be used with bridges has a plurality of spans across the length of the bridge, activates an alarm whenever the distance between any two adjacent spans is greater than a predetermined safe distance. This is accomplished by providing a conduction path extending from one end of the bridge along a first side of the bridge to the other end of the bridge and then back to the first end of the bridge by a conduction path located on the other side of the bridge. Between every expansion joint located between each adjacent span of the bridge are two jumpers to provide electrical connection across the expansion joints, one jumper located on each side of the bridge proximate to each expansion joint. In this manner, should any one of the expansion joints exceed a predetermined width placing two adjacent spans at a distance greater than the predetermined safe distance, at least one of the jumpers located therebetween will break the conduction path causing the alarm to be activated.

Abstract: A security system for the containment of at least one firearm in a repository. The security system operates in conjunction with an alarm system adapted to generate a signal upon the emergency or unauthorized opening of the repository indicative of access to and possible removal of the firearm contained therein. An alarm system which generates a signal at a remote location is indicative as to whether the firearm in the repository has been accessed and/or removed either in an intended manner or under emergency and/or duress conditions. Also disclosed is a particular pushbutton lock mechanism suitable for use with a security system of the type disclosed herein.

Abstract: A smoke detector includes a housing having therein a sensor for detecting smoke, an arrangement responsive to detection of smoke for producing an audio signal and an audible sound at an audio frequency, a telephone dialer circuit, a telephone jack on the housing for coupling the dialer circuit to a telephone line, and an arrangement responsive to the occurrence of the audio signal for causing the dialer circuit to automatically dial the telephone number. The telephone number may be a single specified digit, or a multi-digit number stored in a last number dialed memory of the dialer circuit. After dialing of the telephone number, the audio signal is supplied to the telephone line regardless of whether an answer occurs at the remote end. After a predetermined time interval, a timer circuit releases the telephone line, waits a predetermined time interval, causes the telephone number to be dialed again, and then causes the audio signal to again be applied to the telephone line.

Abstract: A security circuit includes a power supply and one or more modular switch units and a modular alarm unit. Each modular unit includes two standard multiple-conductor telephone jack sockets, with at least one conductor of each socket connected to the circuitry of the unit, with all of the other conductors of one socket being respectively directly connected in-line to the corresponding conductors of the other socket. The modular units are interconnectable with standard telephone connector cables having modular telephone jack plugs mateable with the sockets. The power supply may be a battery which may also be provided with modular telephone jack sockets. Alternatively, the circuit may be powered from the RS-232 serial port of a personal computer, the telephone connector cable being coupled thereto through a standard adapter. Different versions of switch units and alarm units are disclosed. Series circuits are terminated with a spiral terminator plug.

Abstract: A broadband transformer with one-to-one turns ratio provides common mode noise suppression in a transmission line. One winding of the transformer is connected in series with each of the two wires of the transmission line. The transmission line is connected between a multiplexer device, coupled in turn to a plurality of spaced-apart fire detectors, and an output fire alarm control panel. Common mode noise on the transmission line results in only a very small noise current appearing at the central fire alarm panel. As a result, a noise rejection for the system is increased.