Matches 251 - 300 out of 546 < 1 2 3 4 5 6 7 8 9 10 11 >
Match Document Document Title
5066944 Fluid detection system with relay release and relatch function  
A fluid status detection system includes a plurality of probes connected to a controller. The controller includes a number of relays that may be programmed to latch either open or closed upon...
5063371 Aircraft security system  
An aircraft security system includes a central control unit, several remotely located cluster controllers and a plurality of intrusion sensors associated with and controlled by each cluster...
5057817 Intruder detection system with passive self-supervision  
A multizone intruder detection system comprises a supervisory circuit for verifying, from normal traffic or activity in each of the zones of protection while the system is disarmed, that each of...
5057816 Multizone intruder detection system with forced walk-test  
A multizone intruder detection system comprises a supervisory circuit for verifying, while the system is disarmed, that each of a plurality of intrusion sensors is, indeed, functional. The...
5051722 Central address and programming unit for fire alarm detector  
A central address and programming unit designed to constitute a dialogue system with a plurality of fire alarm detectors in order to characterize an alarm, the place of the disaster, technical...
5043701 Multi-input electrical monitor  
A multi-input electrical monitor has a plurality of input terminals for connection to a plurality of condition responsive transducers whereby some of the input terminals receive electrically high...
5039980 Multi-nodal communication network with coordinated responsibility for global functions by the nodes  
An electronic network of communication and processing nodes particularly suitable for control of environmental systems has pluralities of the nodes which are sources for certain types of status...
5017906 Apparatus and method for combining analog detection signals to provide enhanced alarm integrity  
An apparatus and method for combining detection signals generated by intrusion detection systems to provide improved alarm integrity therefor. The apparatus and method have utility with mixed...
4992775 System for ensuring valid communications between a central control and a plurality of remote modules  
An annunciation system for a wireless weighing system. The weighing system includes control keys for selecting and displaying the weights from a plurality of remote weighing pads, each having a...
4988988 Central monitoring and alarming system  
A central monitoring and alarming system for monitoring and alarming an abnormal condition, for example fire and gas leakage, includes a central monitoring station having a memory device and a...
4940965 Vocal alarm for outboard engine  
A vocal alarm arrangement includes a plurality of sensors, including a sensor for detecting an abnormality in cooling water, a sensor for detecting an abnormality in an oil level, and the like, and...
4906970 Vehicle on-board diagnosing system  
A vehicle on-board diagnosing system having a display, a plurality of units operatively connected to a plurality of systems to be diagnosed, and a system selecting device which is constructed and...
4857918 Fault diagnostic apparatus for electric appliance  
A fault diagnostic apparatus for a device subject to a plurality of predetermined fault conditions. The apparatus includes a fault detector for automatically detecting the occurrence of any of the...
4812819 Functional relationship-based alarm processing system  
A functional relationship-based alarm processing system and method analyzes each alarm as it is activated and determines its relative importance with other currently activated alarms and signals in...
4801934 Method and apparatus for transmission of data with data reduction  
In a transmission network having a tree structure in which data is forwarded from the tree branches toward the trunk at periodic intervals, the data which is transmitted between the several network...
4797670 Redundant signal selector system  
The present invention relates to a signal selector which selects a signal for control of various operating parameters in a process facility. The system includes a display and first and second...
4777473 Alarm system incorporating dynamic range testing  
An alarm system incorporating a dynamic range testing feature whereby the system polls and tests, on a regular basis, the resistance of the circuits of alarm condition resistor elements in the...
4740787 Centralized monitoring method for security system  
A centralized monitoring method for fire alarm processing, wherein, with respect only to specially designated ones of plural terminal units at least special data common to the special terminal...
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...
4725820 Composite detector  
A composite detector includes a plurality of sensors of the same or different types, a plurality of analog switches connected to outputs of the plurality of sensors, and an operation circuit, such...
4703325 Remote subsystem  
A Remote Subsystem for monitoring a large number of parameters relating to operating equipment at a remote site is disclosed. A monitoring system having a plurality of local service offices each...
4689820 Hearing aid responsive to signals inside and outside of the audio frequency range  
A hearing aid having a microphone (10), a microcomputer (12) for digital signal processing of digitized microphone signals and an electroacoustic converter (14) for acoustic reproduction of the...
4675896 Remote monitoring apparatus  
A determination of the extent and location of malfunctions in electrical equipment is made by providing monitoring apparatus at the equipment which includes a resistance network that provides a...
4668940 Portable hazard warning apparatus  
Portable electrically operable apparatus for monitoring and for giving warning of the presence of a predetermined environmental hazard in the neighbourhood of the apparatus and which comprises a...
4665383 Security system with monitoring and warning circuits  
A central protection system suitable for the protection of a building from fire and other hazards includes a set of environmental sensors and circuitry for interrogating the sensors. The system...
4633230 Cooking, fire, and burglar alarm system  
An alarm system for detecting popular home emergency conditions employs cooking, fire, and burglar sensors. Either or all of these sensors can activate the alarm. The system can produce...
4622540 Security system status reporting  
Alarm system apparatus and method for optically transmitting information indicative of system operational status from an alarm detection unit to a remote receiver. The alarm detection unit includes...
4587515 Supervising arrangement  
A supervising arrangement for a transmission system, having an alarm system which displays alarm signals from different apparatus by indication lamps. All the indication lamps which are lit are...
4572652 Copying machine with audible indicator means  
A new type of a copying machine which is easy to operate and particularly indicates the operator of how to use the copying machine from time to time. There is provided a copying machine having a...
4571586 Alarm console controls  
An alarm console is provided which selectively generates audio signals in an ordered priority basis when there is a simultaneous request for two or more tone signals. The priority is from voice...
4562428 Intrusion detector  
This invention is an intrusion detector which uses codirectionally coupled CW leakly cable sensor techniques. Successive sensors are connected serially through R.F. decouplers, and each is polled...
4551718 Method and apparatus for transmitting status information between remote locations  
A system for transmitting status information from a first location to a remote second location includes a monitoring device at the first location for monitoring the state of a plurality of relays...
4498075 Fault indicator apparatus for a multi-zone intrusion system  
A fault indicator apparatus employs a single indicating device such as a light emitting diode (LED) to provide an indication of all zones within a plurality of zones which exhibit a predetermined...
4495488 Ultrasensitive apparatus and positioning method for detecting change in fluid flow conditions in relief flowlines associated with a chemical or refinery complex  
Transient change in heat flux due to ultrasmall variation in flow conditions (say from no-flow to flow) within a series of relief flowlines to pinpoint sources of plant upset, is achieved by...
4494112 Ultrasensitive apparatus and monitoring method for detecting change in fluid flow  
Transient change in heat flux due to ultrasmall variation in flow conditions (say from NO-FLOW-to-FLOW) within a series of flowlines to pinpoint sources of plant upset is achieved, by carefully...
4484180 Switch condition indicator  
The identification of the last-actuated of a plurality of parallel connected switches is provided by energizing a light source associated with the last-actuated switch and by providing a coded...
4459582 Local control apparatus for central station alarm system  
In a central station alarm system the alarm sensors associated with a particular subscriber's premises are monitored by a local control unit associated with those premises and controllable by the...
4455549 Indication device  
A device for indicating the triggering of a signal transducer in, for example, thread surveillance and monitoring systems. In one device according to the present invention, the signal transducers...
4438428 Multiple function personal security alarm  
A multiple function alarm (10) for the security of an individual within a preselected area, the alarm (10) having substantially all its electrical components mounted to a board (12), includes a...
4422066 Condition sensor interface means  
Two condition sensors of two entirely different types are selected and monitored by a single condition sensor interface means. The interface means provides for selection of the sensor to be...
4403213 Power supply diagnostic system  
A digital controller used in regulating the output of a power supply including a diagnostic circuit for sensing the failure of a component in the power supply. Upon the occurrence of a fault,...
4387368 Telemetry system for centrifugal water chilling systems  
A telemetry system for reporting the status of a number of physical parameters occurring during operation of industrial equipment, such as the monitoring of refrigeration/air conditioning safety...
4376935 Handbag utilizing automatically functioning illumination and alarm devices  
An electrical arrangement for a handbag including a switch unit having at least one electrical terminal on its exterior, a magnetically resposive switch in its interior connected to the terminal,...
4375637 Integrated alarm, security, building management, and communications system  
A fully integrated alarm, communication, and building management system has a central control station and a plurality of remotely located sensing and controlling devices. Each remote device has an...
4363031 Wireless alarm system  
A wireless smoke alarm system in which each detector includes a local smoke detector and an alarm. These are coupled to a transmitter and a receiver. The transmitter and receiver are within range...
4356475 System containing a predetermined number of monitoring devices and at least one central station  
The system contains a number of monitoring devices, such as bedside units for monitoring parameters of patients, and a central station in star connection. Each monitoring device contains a signal...
4356470 Multifunction electronic meter for vehicle  
A multifunction electronic meter for a vehicle can display selectively plural measured informations of fuel amount, cooling water temperature, oil pressure, battery voltage and the like of a...
4319229 Alarm system having plural diverse detection means  
A system for detecting a fire emergency condition employs three separate and diverse sensors; a heat detector, a smoke detector, and an infrared radiation detector. Either or all of these detectors...
4300099 Fire detecting system  
A fire detecting system which is capable of successively controlling the forecasting of a fire, setting off alarms and activating fire-extinguishing equipment. The system includes a detector...
4295130 Audio-visual disaster alert system  
A disaster alert system for a public area, building or the like, each area of which is provided with a sensor responsive to a localized disaster such as a fire with a circuit for each sensor...
Matches 251 - 300 out of 546 < 1 2 3 4 5 6 7 8 9 10 11 >