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6184793 |
Method of testing aboveground fuel systems
A method of testing an aboveground-type fuel storage tank includes steps of positioning at a test location an aboveground-type fuel storage tank that has been configured as it is intended to be in...
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6169489 |
Motor winding contamination detector and detection
A method and apparatus for detecting motor contamination utilizes zero-sequence currents in a sensing coil to detect contamination. The detector includes a current transformer comprised of a...
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6169491 |
Multiport power monitor
A multi-port power monitor is provided which indicates whether power is being supplied to one or more of a plurality of ports connected to external devices. The multi-port power monitor comprises a...
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6163264 |
Electrical connectors, lamps and lampholders
A lamp has a tungsten filament within an evacuated glass bulb and connected to electrical conductors. Connected between the two electrical conductors are a series-connected neon and resistor. In...
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6163263 |
Circuitry for electrical device in multi-device communications system
A self-monitoring power supply can be incorporated into electrical devices which are part of a multi-device communication system. The power supply is energized by electrical energy received from a...
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6163266 |
Fan operation detection circuit for a DC fan and method of operation thereof
For use with a DC fan, a detection circuit and a method of detecting an operational condition thereof. In one embodiment, the detection circuit includes: (1) a sensor, coupled to the DC fan, that...
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6160485 |
Voltage level conditioning transceiver cable
A voltage level conditioning transceiver cable includes a a voltage level conditioning circuit, a single ended to differential circuit, a controller connector, a device connector, and a plurality...
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6160484 |
Process and apparatus for the display and provision of alarm means for measured values on communications terminals
A method and apparatus for communicating and storing measured values that are measured on electrical equipment. The values are retrieved within the framework of a link controller of at least one...
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6157308 |
Detecting hidden faults in reliable power systems
A method and apparatus for detecting silent faults in feeding diodes of redundant DC power supplies. The voltages on both sides of the feeding diodes are measured. Arrangements are then made to...
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6157309 |
Battery pack
In a battery pack, it is difficult that information on a contained battery of the battery pack, such as the accurate state of charge of the battery, is detected at an external equipment. A...
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6157312 |
Appliance for integrating multiple forms of communication
A communication appliance with a desktop unit and a secondary unit. The desktop unit includes an outer casing, bottom feet, openings in the outer casing for control elements, a plurality of...
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6147616 |
Automatic power interruption and re-supply relay for an electric power line
The present invention provides a digital automatic power interruption and re-supply relay for performing detection and comparing operation to inform a state of an accident with voice and numerals...
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6147617 |
Apparatus and method for detecting faults in outdoor display
The present invention is to provide an apparatus for detecting errors due to cutoff of a unit pixel and short between the unit pixel and the ground voltage level in a lighting-off state, and also a...
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6147615 |
Speed detecting device for a direct current motor, and electric fan with a motor speed detecting device
A speed detecting device is adapted for use with a direct current motor, and includes a coupling circuit adapted to be connected electrically to a power input line of the motor, a one-shot circuit,...
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6140926 |
Redundant status indicators for fault tolerance
A system includes multiple modules, each powered by a different power source, and a status indicator for a first of the modules. Any of the multiple modules can drive the status indicator. Each of...
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6137418 |
Single channel apparatus for on-line monitoring of three-phase AC motor stator electrical faults
An on-line monitor for electrical faults in the stator of an ac motor has a single di/dt current transformer or three separate di/dt current transformers coupled to the three phase conductors of...
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6133840 |
Apparatus using vibration motor
An apparatus using a vibration motor as a drive source is arranged to inhibit a starting action of the vibration motor when the motor is found to be in a sticking state and not drivable. The...
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6121886 |
Method for predicting fault conditions in an intelligent electronic device
A method of predicting an eminent circuit breaker trip condition using an intelligent electronic device such as a trip unit, a protective relay, a power meter or other IED is presented. The...
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6111503 |
Integrated proximity detector for antennas
A method and apparatus for detecting the presence of objects such as persons in front of a high-frequency communications antenna comprising a transmitting element connected to a circulator. The...
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6111504 |
Electronic equipment security and recovery system
The present invention describes an apparatus and method for an electronic equipment security and recovery system in which the disconnection of electrical power and subsequent movement of the...
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6111548 |
Enclosed power transmission system with a sensor positioned within the enclosure and an antenna assigned to the sensor
Sensors positioned in power transmission systems with tubular enclosures have radio interrogation capabilities. The radio antenna assigned to a sensor is a planar antenna with a radiating element...
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6104302 |
Fuse protected power supply circuit for a sensor-operated solenoid
A fuse protected power supply circuit for a sensor-operated solenoid controls plumbing fixtures such as automatically-operated faucets, automatically-operated flush valves, hand dryers, soap...
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6104297 |
Corona discharge detection system
A corona discharge detection device comprising an optical sensor for generating an electrical signal in response to the detection of ultraviolet radiation in a prescribed range. The detection...
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6104303 |
Battery detecting device for a radio pager
In a device applicable to a pager or similar electronic apparatus for detecting a thin disk-like primary battery which feeds power to a load circuit, a secondary battery is provided which is...
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6101559 |
System for identifying the physical location of one or more peripheral devices by selecting icons on a display representing the one or more peripheral devices
A method and apparatus which indicates the physical location of one or more peripheral devices. A system operator uses an input device to select an icon that is displayed on a display device. The...
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6100807 |
Rack protection monitor
A hardwired, fail-safe rack protection monitor utilizes electromechanical relays to respond to the detection by condition sensors of abnormal or alarm conditions (such as smoke, temperature, wind...
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6087948 |
Encoder
A method of establishing a state of an encoder, and an encoder having a state assessment device that includes the steps of generating at least one analogue signal whose amplitude is changed in...
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6087949 |
Method and apparatus for preventing overheat of portable telephone
A method and apparatus for preventing an accident or a fault of a device due to heat generation by calculating a temperature of a device expected after data transmission is finished to predict a...
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6081729 |
Encapsulated tubular conductor
An encapsulated tubular conductor having at least two antenna elements disposed on the capsule thereof for maintaining therebetween wireless information transmission in a transmitting-receiving...
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6075449 |
Performance indicator for an electrical static eliminator device
An electrical static eliminator device performance indicator including a sensor for sensing the ion flow from an emitter point of the static eliminator device and also for sensing the presence of a...
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6072399 |
Method of determining the quantity of the material cut by an electrically powered cutting tool and circuit arrangement for implementing this method
The invention is directed to a method and a circuit arrangement for determining the quantity of the material cut by an electrically powered cutting tool. According to the present invention, the...
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6070988 |
Control panel for an image forming device
A control panel that includes printed information cards used in conjunction with status indicators to give the user detailed information about printer operations. The invented control panel...
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6052059 |
Fuse plug
A fuse plug, in particular for terminal blocks in control, regulation and power supply systems, essentially comprising a housing, a fuse-element which is fused upon overshooting of a specific...
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6049283 |
Gas detecting apparatus
The presence of a serviceable electrochemical gas sensor (1) in gas detecting apparatus is determined on the basis of the noise in the output of a sensor amplifier. A microcomputer (22) calculates...
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6034610 |
Method and arrangement for monitoring the operation of a gas probe
The invention is directed to a method for monitoring the operation of a gas probe, such as a λ-probe for an internal combustion engine. The λ-probe has a probe ceramic (Nernst cell) and a probe...
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6028522 |
System for monitoring the light level around an ATM
The present invention is generally directed to a system and method for monitoring the level of light surrounding an automatic teller machine (ATM). In accordance with one aspect of the invention, a...
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6023228 |
Method and apparatus for checking electrical drive mechanisms
A method and an apparatus are provided for checking a plurality of electrical drive mechanisms which may, in particular, be drive mechanisms for railroad switches. Measured values are picked up at...
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6018300 |
Fault monitoring
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6016105 |
Fault indicator providing contact closure and light indication on fault detection
A fault indicator for detecting the occurrence of a fault current in a monitored conductor and providing a contact closure and a light indication indicative thereof includes a rotatably mounted...
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6016519 |
Data communication system, data communication device and memory medium, for storing data communication program
Disclosed is a system, for exchanging data among a plurality of devices, wherein a device can detect the state of another device without that device being powered on, and whereby usability can be...
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6016104 |
System for controlling the resistance of a load connected to a transformer
An arrangement allowing a definite and reliable determination of a load resistance connected to the secondary side of a transformer includes devices, which measure exclusively the inductance of the...
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6014083 |
Metalclad switchgear assembly with partial discharge detection
A metalclad switchgear assembly for high or medium voltage, having a cladding, includes at least one sensor arranged in an interior space of the cladding for detecting a condition variable within...
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6008730 |
Sound warning circuit for PCI hot plug
A sound warning circuit for PCI hot plug basically comprises: a timer that takes as inputs a fixed frequency clock and the system port B's bit 0, and which controls the system; a logic AND gate...
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6002338 |
Method and system for detecting failures in self-exciting sensor
A method and system for detecting faults with a self-exciting sensor includes a monitor circuit coupled to the self-exciting sensor for monitoring a signal associated with the sensor and generating...
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5995009 |
Warning apparatus for an injection molding machine
A warning apparatus for an injection molding machine includes a detection device for detecting an operation performed by an operator of the injection molding machine; a warning section for warning...
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5982291 |
Electric fence security system
Electric fences used to keep animals in or out of a particular area of land often cover great distances over all manner of terrain, making it very difficult to ensure the effectiveness of the...
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5973418 |
Pull-out high current switch
A high-current fusible switch includes a nonconductive base, a nonconductive removable top, a plurality of conductive fuse clips, and a fuse having blade-type terminals. The fuse clips are fixedly...
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5973608 |
Remotely activated electrical control arrangement
An arrangement for controlling the activation of an electrical appliance. The arrangement utilizes a capacitive sensor to recognize the physical proximity of a user (e.g., a hand) to an internal...
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5973604 |
Method for monitoring optical fiber cables for lightning damage
Lightning strikes on or proximate to an optical fiber cable may be detected via a lightning detector (18) that monitors the characteristics of voltage present on a metallic sheath (12) associated...
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5969600 |
Dangerous condition warning device incorporating a time-limited hush mode of operation to defeat an audible low battery warning signal
A battery operable dangerous condition warning device adapted to issue an alarm when a sensed dangerous condition exceeds a predetermined status incorporates a monitoring device circuit including:...
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