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Thomas Edison ; 1889
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| Number | Title | Issue Date |
| 8149128 | Ground potential rise monitor A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor... | 04/03/2012 |
| 8130110 | Reporting a faulty charging device Reporting a faulty charging device. A mobile device may determine if a charging device is a faulty charging device. The determination may be performed after coupling the charging device to a power source and to the mobile device. If the charging device is a faulty c... | 03/06/2012 |
| 8009055 | High voltage indication system Systems and methods are disclosed for detecting and indicating high-voltage presences on a machine. In one embodiment a high-voltage indication system is disclosed and may include a voltage detector configured to compare the voltage level associated with an element ... | 08/30/2011 |
| 7667611 | High voltage detection system Systems and methods are disclosed for detecting high-voltage levels associated with a work machine. In one embodiment a high-voltage detection system is disclosed and includes a threshold detector configured to determine a voltage level associated with an element, d... | 02/23/2010 |
| 7535376 | Method for operating a communication terminal with a sliding mechanism A sliding mechanism includes at least one member adapted to slide along at least one body wall. The body wall and the sliding member are adapted to mate in at least one designated location when the sliding member is pushed into frictional sliding contact with the bo... | 05/19/2009 |
| 7443310 | Remote sensor network system with redundancy A multi-sensor network having a plurality of receivers and sensors connected to a common communication line is provided. A controller will activate one of the plurality of receivers, thereby allowing one of the plurality of sensors to transmit data to the communicat... | 10/28/2008 |
| 7391299 | Circuit protector monitoring and management system user interface method, system and program A user interface, method system and program for circuit protector management in an electrical system. ... | 06/24/2008 |
| 7339485 | Rectifier for supplying double voltage and RFID tag thereof Disclosed is a rectifier for supplying double voltage and an RFID tag thereof. The rectifier includes a charging part for charging an input voltage induced to input ends by a received radio frequency (RF) signal; a power provider for charging a sum voltage correspon... | 03/04/2008 |
| 7336192 | System and device for monitoring at least one household electric user, in particular a household appliance A system that monitors at least a household electric user, in particular a household appliance, includes a monitoring device that is connected between a source of electric energy and the electric user, the monitoring device including a metering means for detecting o... | 02/26/2008 |
| 7317402 | Alarm in a device for dispensing volatile anesthetics An alarm is associated with a device for dispensing volatile anesthetics. The alarm and device is designed such that an alarm is triggered whenever the operating voltage is interrupted and an assembly unit that determines the dispensing of at least one anesthetic is... | 01/08/2008 |
| 7265679 | Apparatus and method for indicating onset of high-voltage at an output locus of a signal converter device An apparatus for indicating detection of an onset of a high-voltage condition at an output locus of a signal converter device, the signal converter device including a switching network for switchingly controlling a potential at a circuit node coupled with the output... | 09/04/2007 |
| 7206670 | Energy management system for controlling energy supplied to a set of customer buildings A method of supplying energy to a set of customer buildings having energy consuming appliances includes establishing a set of customer tolerances for conserving energy use in a set of customer buildings. A remote control system to control appliances in the customer ... | 04/17/2007 |
| 7177383 | Method and system for safety regulation in nuclear power regulating systems A system and method for monitoring rod moving coils in nuclear power system. The system ensures that these coils are each functioning properly, and thus prevent movement of the other coils when a dysfunctional coil is detected. The method for accomplishing this moni... | 02/13/2007 |
| 7174261 | Power line sensors and systems incorporating same An apparatus for sensing the current in a power line of a power system and systems incorporating the apparatus are disclosed. The apparatus may comprise an enclosure providing a window operable to permit the passage of the power line therethrough. The apparatus may ... | 02/06/2007 |
| 7110226 | Regulator protection circuit and power supply apparatus incorporating it A power supply apparatus has a regulator and a regulator protection circuit. On detecting an abnormality, an abnormality detection circuit in the regulator protection circuit turns the regulator off. Based on the output of the abnormality detection circuit, an abnor... | 09/19/2006 |
| 7102379 | Apparatus and method for monitoring and/or analysis of electrical machines during operation An apparatus and a method for monitoring and/or analysis of electrical machines during operation, wherein the electrical machine has at least one generator with a shaft and drive means for driving this shaft, wherein the shaft is grounded at the first end of the gen... | 09/05/2006 |
| 7064658 | Integrated vehicle power distribution and gateway system A universal vehicle electric power distribution module employs reconfigurable inputs and outputs enabling use of the same hardware across vehicle lines. The module is scalable for ease of expansion and is capable of handling both low current and high current load ma... | 06/20/2006 |
| 7054173 | Circuit with DC filter having a link fuse serially connected between a pair of capacitors A circuit that includes a filter and a DC bus is provided that reduces the potential for failure of a second capacitor of the filter in the event a first capacitor shorts. The filter is electrically connected across the DC bus and includes serially connected capacit... | 05/30/2006 |
| 7034707 | System and device for monitoring at least one household electric user, in particular a household appliance A system that monitors at least a household electric user (HA1–HA4), in particular a household appliance, includes a monitoring device (MSA) that is connected between a source of electric energy (OUT) and the electric user, the monitoring device (MSA... | 04/25/2006 |
| 7023352 | Voltage-detecting method and related circuits A voltage-detecting circuit includes a CPU, a comparator, a first resistor, a second resistor, and at least a power level segment detector connected in parallel with the first resistor, the power level segment detector having a third resistor and a first switch seri... | 04/04/2006 |
| 7003409 | Predictive failure analysis and failure isolation using current sensing A method, system, and computer program for predicting the failure of an electronic circuit. One embodiment of the invention monitors the current utilization, environment conditions, and operating conditions of the electronic circuit. A system manager is altered if t... | 02/21/2006 |
| 7002336 | Test adapter for a weapon store test set A method and apparatus for testing the electrical power system of an aircraft uses existing unmodified test equipment not otherwise capable of reliably testing and certifying the aircraft for weapon store launching operations for a particular store type. ... | 02/21/2006 |
| 6985084 | Visual indication equipment operation An electrically operated equipment with a sealed enclosure containing circuitry with an exterior visual indicator to show a state of operation of the equipment. The visual indicator is illuminated by a magnetic flux sensor also exterior to the equipment, the sensor ... | 01/10/2006 |
| 6975312 | Computer system having network connector and method of checking connection state of network cable therefor A computer system having a network connector to which a network cable is connected, including a displaying part displaying a connection state of the network cable; a signal processing part processing a signal inputted through the network connector; and a control par... | 12/13/2005 |
| 6972940 | Power supply protection circuit A power supply protection circuit for stopping a power supply to electrical equipments in case a normal power voltage is not outputted from a direct current power supply and an excess voltage or a reduced voltage is outputted. The power supply protection circuit acc... | 12/06/2005 |
| 6949934 | Fault-annuciating system for a transformer A preferred embodiment of a transformer includes a core, and a primary and a secondary winding positioned on the core so that the primary and secondary windings are inductively coupled when the primary winding is energized. The transformer also includes a sensor for... | 09/27/2005 |
| 6946967 | Protective device for an electric motor with sensor and evaluation unit A protective device includes a signal input intended for connection to a sensor, a signal output intended for connection to an evaluation unit, and an isolation element for galvanically separating the signal input from the signal output. The provision of the protect... | 09/20/2005 |
| 6897784 | Water monitoring system and water monitoring method for high voltage cables A water monitoring system and a water monitoring method for a high voltage cable including a conductor and a screen surrounding the conductor. At least a first water sensing wire extends in the screen between the cable beginning and the cable end and at least a seco... | 05/24/2005 |
| 6853307 | High voltage proximity warning system and method A high-voltage-proximity warning system has a local panel (1) for being positioned in or about a cab (2) of heavy equipment or other vehicle (5), a remote panel (3) in predetermined electrical communication with the local panel and one or... | 02/08/2005 |
| 6844819 | Voltage sensing hand tool A hand tool which provides an alarm signal to a user as the tool approaches a live electrical wire is disclosed. The hand tool comprises a conductive tool head and a non-conductive handle. A non-contact voltage sensing circuit is provided in the handle of the tool. ... | 01/18/2005 |
| 6737978 | Voltage testing apparatus for electrical railways A voltage testing apparatus for electrical railways is disclosed consisting in one embodiment of a transportable pole-mounted electrical power indicator, electrically conducting wire-engaging means such as a hook attached to one end of the pole and electrically conn... | 05/18/2004 |
| 6731218 | Voltage sensing hand tool A hand tool which provides an alarm signal to a user as the tool approaches a live electrical wire is disclosed. The hand tool comprises a conductive tool head and a non-conductive handle. A non-contact voltage sensing circuit is provided in the handle of the tool. ... | 05/04/2004 |
| 6727821 | Apparatus and method for predicting an overload trip for an electrical power transformer An apparatus for monitoring and controlling the operation of an electrical power transformer includes a processor with input transducers for providing to the processor inputs indicative of electrical current in a winding of the transformer and ambient temperature ou... | 04/27/2004 |
| 6667692 | Electrical utility meter having harmonic data templates for power quality alarm thresholds An electrical utility meter having harmonic data templates advantageously enables a user to determine whether equipment at a particular site is susceptible to electrical damage or interference. According to an exemplary embodiment, the meter generates mea... | 12/23/2003 |
| 6614356 | Digital meter for use of current and voltage The present invention relates to a digital meter for use of the current and voltage, including a front end signal processing device, a press button input device, a central processing unit (CPU), an LCD controller, an LCD, and an alarm device. When the sig... | 09/02/2003 |
| 6600425 | Method and apparatus for detecting and recording episodic overloads in a circuit A apparatus for recording information on power surges in an electrical or electronic system is disclosed. The apparatus has a gas discharge tube connected between an input line of the electrical or electronic circuit protected and ground. The gas discharg... | 07/29/2003 |
| 6480114 | High impedance diagnostic for gun driver and method An apparatus for detecting a high impedance load on an output of a driver circuit having a power switching circuit providing output signals to a coil. Each output signal results from a drive signal that has a waveform comprising a higher magnitude initial... | 11/12/2002 |
| 6424266 | Apparatus for preventing thermal damage to an electrical power transformer An apparatus for monitoring and controlling the operation of an electrical power transformer includes a processor with input transducers for providing to the processor inputs indicative of electrical current in a winding of the transformer and ambient tem... | 07/23/2002 |
| 6339380 | Electronic over stress detector circuit for magnetoresistive devices in data storage devices such as disc drives The circuit in accordance with the present invention monitors current signals between the preamplifier and the transducer in a data storage device such as a disc drive utilizing magnetoresistive transducers and/or giant magnetoresistive transducers. The d... | 01/15/2002 |
| 6329924 | Wearable electric field detector A wearable electric field detector has a housing mountable on a user's person and including a sensing circuit responsive to an electric field to generate a signal which varies in proportion to the strength of the sensed field, and an alarm circuit coupled... | 12/11/2001 |
