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7253610 |
Self-powered bicycle signal output device and display apparatus using same
A bicycle signal output device comprises a magnet structured to be mounted to one of a first part and a moving part of a bicycle, a coil structured to be mounted to the other one of the first part...
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7248152 |
Automatic on/off switch for vehicle power outlets
A vehicle power outlet switch ( 10 ) can include a threshold detector ( 14 ) for comparing a predetermined threshold with a vehicle battery characteristic and a power switch ( 18 ) controlled by...
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7245228 |
Portable electronic apparatus with controlled light sources
A portable electronic apparatus has light sources that can be controlled to produce decorative or informational effects. Each light source is controlled by the combination of an enable signal from...
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7245226 |
Integrated microprocessor controlled alarm
Alarms are often required on various vehicles and equipment such as fork lifts, dump trucks, bulldozers, etc. An alarm is disclosed controlled by a microprocessor, which is an integral part of the...
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7093140 |
Method and apparatus for configuring a voltage regulator based on current information
A computer system includes a voltage regulator that supplies power to a component. The component may provide a signal indicating an amount of current the component consumes under a high utilization...
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7081827 |
Power over Ethernet-prioritized active splitter
A POE (power over Ethernet)-prioritized active splitter is disclosed for a prioritized network having different priorities such as a network security system that uses an intelligent POE power...
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6956462 |
Methods and devices for providing power to network-based systems
Circuits provide power to network-based devices, such as IP telephones, using spare conductors within existing LAN cables. The circuits, which may comprise diode bridges, are designed to provide...
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6917298 |
Solar system alarm backup unit
A backup electrical power unit for an alarm panel. The unit comprises a solar panel array which produces an array output DC voltage and a charging current for a battery through a first circuit at a...
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6859640 |
Demodulation capacity of an electromagnetic transponder
An electromagnetic transponder including an oscillating circuit adapted to extracting from a radiating field a high-frequency amplitude-modulated signal, circuitry for extracting from said...
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6844823 |
Method and apparatus for providing power to a visual messaging system for high-speed networks
The present invention a method and apparatus for providing a visual messaging device for use with a high-speed network and an electrical supply system for the visual messaging device. The visual...
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6819226 |
Systems and methods for energy storage in land-based telemetry applications
The invention involves systems and methods of providing energy to land-based telemetry devices wherein the energy storage and power conditioning system is comprised of an input power supply, an...
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6587051 |
Power converting apparatus and burglarproof method therefor
As the application range of solar power generation systems widens, a number of relatively compact and lightweight inverters must be installed outdoors. However, an inverter has no burglarproof...
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6549144 |
Portable electronic activation device
A portable remote activation device having an exceptionally long battery life. The activation device is composed of a receiver unit and a transmitter unit which are normally connected in tandem....
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6438462 |
Semiconductor circuit for an electronic unit
A semiconductor circuit for an electronic unit having at least one microcontroller comprises at least one voltage regulator for providing, from a first supply voltage, at least one second supply...
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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...
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6184789 |
Method and apparatus for visually determining object location
A method and apparatus for determining the location of an object. An object to be located can be provided with an object locator that includes a display. When the object locator receives a signal...
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6172612 |
Smoke detector with remote testing, shutoff and powering means
The present invention discloses improved smoke detector devices. In a preferred embodiment, the invention takes the form of an improved smoke detector of the type having a ceiling-mounted, main...
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5960651 |
Theft prevention mechanism for information processing apparatus
A theft prevention mechanism is effective to prevent not only a portable information processing apparatus but also a PC card inserted therein from being stolen. The theft prevention mechanism has a...
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5883577 |
Multi station smoke detectors
A smoke detector that comprises three different power sources. First one is the 110/220 volt AC house current, through a step down transformer or that can be hard wired into the home or factory....
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5786644 |
Two wire PIR occupancy sensor utilizing a rechargeable energy storage device
A two wire detection device includes a relay switch setable to a high and a low impedance state and electrically coupled between a first terminal of an AC source and a first leg of a load, a second...
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5602532 |
Audio coupled annunciating system for electrical panel boxes
An electrically powered annunciating system, for use in electrical panel boxes, having a sensing circuit including a first acoustical transducer to transmit a sonic signal to an annunciating...
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5570077 |
Ambient condition detector with high intensity strobe light
A drive circuit for use with an ambient condition detector limits heat dissipation and associated temperature rises in the presence of varying RMS values of an applied AC signal. The drive circuit...
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5539383 |
Water detection alarm
An electric alarm which includes a dual tone electronic chime, light emitting diode (LED) indicators, electronic circuitry, batteries, and with the exception of the AC adapter and the water...
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5274358 |
Personal safety device having microprocess control and method for operating the same
A personal safety device controlled by a microprocessor which responds to commands, such as activation and deactivation commands. The microprocessor acts to control sound emitted from two separate...
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5144283 |
Energy efficient alarm system and regulative central control unit
An alarm system includes an electronic central controller or control unit with an internal intrusion sensor. The controller is powered by a single nine volt battery. The system can be expanded by...
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4980672 |
Overhead socket smoke detector with theft alarm
An overhead socket smoke detector with a theft alarm includes a case with a bulb base at one end and a lamp socket at an opposite end and connected to the bulb base by a socket switch which is...
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4929931 |
Battery monitor
There is disclosed a battery monitor for monitoring a plurality of conditions of a battery utilized within a system as the primary or auxiliary power source of the system. The battery monitor...
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4345242 |
Gas detector
A gas detector (11) provides a comparator (22) having a plurality of inputs to provide a simplistic but yet reliable sensing sequence for detecting a contaminated gas such as carbon monoxide. A...
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4270123 |
Detector for indicating a fire or detector malfunction
A fire detector provided with a warning system, a reference element and an analysis element whose impedance varies in the presence of a rise of temperature and/or radiation and/or combustion gas,...
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4199753 |
Integrated circuit for detecting changes in light intensity
An integrated circuit employing a photo-diode activates an alarm when an intruder causes a change in the ambient light patterns by more than about 5% in an area under surveillance. The circuit...
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4150369 |
Intrusion alarm system
An intrusion alarm system is described which includes multiple-input intruder sensing circuits, the outputs of which are fed via separate logic NAND circuits, to bistable latch circuits which then...
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4103298 |
Alarm device
An indicator device for providing a high-intensity visual indication of an occurrence comprises a flash tube which is fed with a high voltage from a capacitor, the capacitor being charged by means...
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4090178 |
Combination smoke detector and lamp structure
Structure for combining at one location smoke detection circuitry and wall or ceiling lamp apparatus. The structure includes a housing formed with a bottom wall and side walls and having an opening...
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4065759 |
Smoke detector
A smoke detector working on the principal of interference of light between an L.E.D. source and a phototransistor receiver detects differences in smoke emission regardless of the color of the...
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4063227 |
Smoke detector
Smoke detector apparatus characterized in the utilization of solid state components in conjunction with standard primary batteries as a power source. Operating under photo-optical principles, the...
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3653041 |
ANNUNCIATOR SYSTEM
There is provided an annunciator system for indicating that an alarm condition exists at any of a plurality of remote station monitoring circuits having a like plurality of supervisory circuits,...
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3641539 |
REMOTE MONITORING AND CONTROL SYSTEM
A system is disclosed which is capable of monitoring the condition of an apparatus, generating signals indicative of that condition, and, at a remote location, providing signals indicative of the...
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3611053 |
INTRINSICALLY SAFE CIRCUIT
A circuit for use with a sensor located in a hazardous area such as in an atmosphere of explosive gases, organized to prevent electrical power at the sensor from exceeding prescribed levels even...
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3609728 |
PORTABLE REMOTE LOCATION MEASURING SYSTEM UTILIZING PULSE WIDTH MODULATION
A portable system for measuring a condition, particularly temperature, and transmitting a signal indicative of the condition to a remote location. A portable insulating and protective dry container...
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3603957 |
INTRUSION ALARM SYSTEM AND LINE VOLTAGE COMPENSATION
An intrusion alarm system responsive to the amount and rate of decrease of light striking a photohead is provided together with a means to compensate for those line voltage fluctuations which would...
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3582921 |
TEMPERATURE TRANSDUCER AND TELEMETRY SYSTEM
A temperature transducer having a small battery powered oscillator circuit packaged in a portable housing with a relatively slender probe projecting from the housing for insertion into food...
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3550111 |
SECURITY ALARM SYSTEM
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3265112 |
Burner control indicator
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3134970 |
Alarm system
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3051852 |
Transistorized circuit breaker network
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3029379 |
Salinity indicating system with automatic temperature compensation including alarm
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2819410 |
Power supply for centralized traffic control system
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3555532 |
Title is not available
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