Fuse Or Circuit Breaker Patents (Class 340/638)
  • Patent number: 7652566
    Abstract: Apparatus includes an arc wave generator for testing an arc fault circuit interrupter (AFCI) for use in a test system for testing whether or not an arc fault circuit interrupter (AFCI) is operating normally, in which a false arc is generated for use in testing the arc fault circuit interrupter (AFCI). The arc wave generator includes a rectifier which receives a commercial power source as an input source and rectifies alternating-current voltage of the commercial power source to generate a rectified signal. A drop resistor drops the voltage of the rectified signal to generate a voltage-dropped signal. A mono-stable multivibrator adjusts a voltage level and a pulse width of the voltage-dropped signal and generates a pulse signal which is used to generate a false arc for testing the arc fault circuit interrupter (AFCI). Thus, a false arc is generated with a simple circuit to accurately test the actions of the arc fault circuit interrupter (AFCI).
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: January 26, 2010
    Assignee: Hetko, Inc.
    Inventors: Jun Bae Lee, Shin Yon Jo
  • Publication number: 20090315731
    Abstract: A residual-current circuit breaker includes at least one summation current transformer through which at least one first lead and one second lead of a network to be protected are guided. At least one secondary winding is arranged on the summation current transformer and operatively connected at least indirectly with at least one energy storage element. At least one discharging resistor is switched in parallel with the energy storage element. The residual-current circuit breaker has a trip element which is operatively connected with break contacts in the at least one first lead and the at least one second lead. In order to reduce unexpected cut-offs of a network to be protected, the at least one discharging resistor includes a first partial resistor, and a second partial resistor switched in series with respect to the first partial resistor, with a least one electric signaling device operatively connected, at least indirectly, with the first partial resistor.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 24, 2009
    Applicant: Moeller Gebaudeautomation GmbH
    Inventors: RAINER MEISEL, Georg Ritzinger
  • Publication number: 20090315732
    Abstract: A residual-current circuit breaker includes at least one summation current transformer through which a first lead and a second lead of a network to be protected are guided. At least one secondary winding is arranged on the summation current transformer and operatively connected, at least indirectly, with an energy storage element. A trip element is operatively connected with break contacts in the first and second leads. In order to reduce expected cut-offs of a network to be protected, an electric signaling device is operatively connected, at least indirectly, with the energy storage element.
    Type: Application
    Filed: June 17, 2009
    Publication date: December 24, 2009
    Applicant: Moeller Gebaudeautomation GmbH
    Inventors: Gerhard Dobusch, Michael Bartonek
  • Patent number: 7633400
    Abstract: An alarm circuit and method of monitoring a circuit protection device are disclosed. The alarm circuit includes a circuit protection device connected in series at an input voltage of a load. The alarm circuit also includes a programmable circuit connected in parallel to the circuit protection device and including an alarm signal. The programmable circuit is programmed to include a plurality of functional states, and at least one functional state corresponds to activation of the alarm signal. The at least one functional state activating the alarm signal corresponds with an interruption condition in the circuit protection device.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: December 15, 2009
    Assignee: ADC Telecommunications, Inc.
    Inventors: Joseph C. Coffey, Brad Blichfeldt
  • Publication number: 20090284385
    Abstract: Embodiments include systems and methods of illuminating indicator lights. For example, one embodiment includes an apparatus for indicating status of an electrical device. The apparatus includes a housing configured to be attached to an electrical device, an electrical input disposed on the housing and configured to receive an electrical signal, a lighting element disposed in the housing and configured to output light in response to the electrical signal, and a first optical element disposed in the housing. The apparatus further includes a second optical element configured to be attached to a panel. The first optical element and the second optical element are positioned so that the first optical element is configured to transmit at least a portion of the output light to the second optical element and the second optical element is configured to output light received from the first optical element.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 19, 2009
    Applicant: Lex Products Corp.
    Inventors: Arnold Tang, Wilbur Gordon Fehrmann, JR.
  • Patent number: 7612654
    Abstract: A system and method for circuit protector monitoring and management includes at least one circuit protector defining an interruptible current path therethrough upon an occurrence of specified operating condition in a circuit; a status element associated with the circuit protector and adapted to monitor an operating state of the current path; and an electronic management system in communication with the status element, wherein the management system is adapted to automatically alert and summon responsible personnel when the circuit protector has operated to open the circuit path, and identify the location of the operated circuit protector.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: November 3, 2009
    Assignee: Cooper Technologies Company
    Inventors: Robert Lawrence Bender, Timothy Hamilton Speno, Michael Craig Henricks, Robert Stephen Douglass, Joan Leslie Winnett Bender, Matthew R. Darr
  • Patent number: 7592893
    Abstract: One embodiment of the present invention provides a fuse having opened-fuse indication, which places two or more coils or conductors in parallel and in thermal contact with an indicating material. The multiple conductors allow a lower level of current to produce sufficient heat or sufficient electrical resistance to transform the indicating material. The multiple conductors can also be made of a reduced diameter, resulting in surge protection at a lower device temperature. The multiple conductor indicator in an embodiment includes a base material. First and second conductors contact the base material. An indicating material thermally couples to the first and second conductors. The indicating material can be on the inside or outside of the fuse body. If on the outside, the body can define a recess, wherein the indicator resides within the recess. The indicator can operate with fuses and other types of circuit protection devices.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: September 22, 2009
    Assignee: Littelfuse, Inc.
    Inventors: John Kennedy, Tom Novak, Mark Klinger, William Gonzalez
  • Patent number: 7592924
    Abstract: An apparatus for testing the life of a leakage current protection device having a leakage current detection circuit and a trip mechanism having a switch device. In one embodiment, the apparatus a ground fault simulation unit, a fault detector of the leakage current detection circuit and the trip mechanism, and a life testing detection control unit having an MCU for controlling operation of the fault detector. In operation, a first signal (pulse signal) is sent to the gate of the switching device to generate a first voltage at the cathode of the switching device, a second signal is sent to the ground fault simulation unit to generate a simulated ground fault for the leakage current detection circuit to generate a second voltage at the gate of the switching device, and the first and second voltages are measured to determine whether a fault exists in the leakage current detection circuit and the trip mechanism.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: September 22, 2009
    Assignee: General Protecht Group, Inc.
    Inventors: Feng Zhang, Hongliang Chen, Fu Wang, Wusheng Chen, Yulin Zhang, Huaiyin Song
  • Publication number: 20090231764
    Abstract: A capacitor bank monitor apparatus for monitoring a state of a common ground connected to a capacitor bank comprises a sensor that that can be coupled to the common ground for collecting measurements relating to the state of the common ground. The monitor also comprises a controller that is logically coupled to the sensor for receiving the measurements and determining whether a fuse on the capacitor bank has opened. The ground monitor also comprises a communications facility that is logically coupled to the controller for communicating a notification that the fuse has opened. The communications facility may comprise a cellular communications device. The ground monitor also may comprise a filter that is electrically connected to the sensor and the controller. The ground monitor also may comprise memory that is logically coupled to the controller for storing at least one state of the common ground.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 17, 2009
    Applicant: Cooper Technologies Company
    Inventors: John Fredrick Banting, Anand Sharad Kulkarni
  • Patent number: 7589625
    Abstract: A control system includes an enclosure, a control panel, and a plurality of controls, indicators, or both mounted on the control panel or in the enclosure. At least some of the plurality of controls, indicators, or both are configured to wirelessly communicate with each other inside the enclosure, and at least some controls including wirelessly controlled relays are configured to control devices outside the enclosure. Also, the wirelessly configured controls, indicators, or both are further configured to communicate with a plurality of other controls, indicators, or both in the control system.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: September 15, 2009
    Assignee: General Electric Company
    Inventors: Nataniel Barbosa Vicente, Charles Stephen Pitzen
  • Patent number: 7576635
    Abstract: A circuit protector signal transmission system, kit and method involves at least one circuit protector defining an interruptible current path therethrough upon an occurrence of specified operating conditions in a circuit, a status element associated with the circuit protector and adapted to monitor an operating state of the current path, an electronic gateway device in communication with the status element and adapted to receive a data signal from the status element corresponding to the operating condition of the current path. The data signal includes location information and identification information for circuit protectors as they operate to interrupt the current paths in an electrical system.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: August 18, 2009
    Assignee: Cooper Technologies Company
    Inventors: Robert Lawrence Bender, Timothy Hamilton Speno, Michael Craig Henricks, Robert Stephen Douglass
  • Patent number: 7561059
    Abstract: A circuit that employs an anti-tamper sensor includes a circuit element that is responsive to a first input and to a second input. A selective coupling element couples the circuit element to the first input and is responsive to the anti-tamper sensor. The selective coupling element has a first state that allows the circuit element to operate normally when the anti-tamper sensor does not detect a tamper condition and is configured to enter a second state that causes the circuit element to become inoperable when the anti-tamper sensor detects a tamper condition. A decoy coupling element is disposed between the second input and the circuit element and has an appearance corresponding to the selective coupling element. The decoy coupling element will cause the circuit element not to operate normally if the decoy coupling element has a selected physical property of the selective coupling element in the first state.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 14, 2009
    Assignee: International Business Machines Corporation
    Inventors: Vincent V. Diluoffo, Raymond J. Eberhard
  • Patent number: 7557724
    Abstract: A device for detecting a fault current in an electronic apparatus has a first and at least one second electric conductor, the first electric conductor carrying a first electric potential and the at least one second electric conductor carrying a second electric potential. The device is characterized by the fact that an electric sensing conductor having a fixed electric rest potential whose value lies between the first and the at least second electric potential is situated between the electric conductors.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: July 7, 2009
    Assignee: Robert Bosch GmbH
    Inventors: Wolfram Breitling, Jacek Mendes, Andrea Goeggelmann
  • Patent number: 7554454
    Abstract: An apparatus for detecting the power state of a circuit breaker switch is disclosed. The apparatus comprises a detector circuit, a processor and an indicator. The processor is coupled to the detector circuit. The indicator is coupled to the processor. In operation, the detector circuit senses an electronic signal at the circuit breaker switch and transmits a signal to the processor. The processor then transmits a signal to the indicator indicating the power state and location of the circuit breaker switch.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: June 30, 2009
    Assignee: Hi-Tech Electronic Products & Mfg., Inc.
    Inventors: Glenn T. Johnson, Michael E. Johnson
  • Publication number: 20090140871
    Abstract: Certain exemplary embodiments can provide a fault detection system, which can comprise a circuit breaker that is adapted to protect an electrical circuit. The circuit breaker can comprise a screen adapted to render a user interface. The user interface can comprise an arc fault detection circuit status indicator indicative of an automatic detection of an electrical circuit arc fault by the circuit breaker.
    Type: Application
    Filed: September 4, 2008
    Publication date: June 4, 2009
    Applicant: Siemens Energy & Automation, Inc.
    Inventor: Solomon R. Titus
  • Patent number: 7535371
    Abstract: A circuit interrupter with end-of-life protection has four components: 1) a control circuit to activate an electromagnetic unit upon detecting a predetermined condition; 2) a fuse coupled between the control circuit and the power supply; 3) an end life sensing circuit coupled to the control circuit; and 4) an end life indicating circuit coupled to the end life sensing circuit and the power supply. The end life sensing circuit includes a light emitting device and a light sensitive device controlled by the light emitting device. The end life indicating circuit includes a visual indicator to indicate that the circuit interrupter reaches the end of its life. Another circuit interrupter with end-of-life protection has three components: 1) a control circuit to activate an electromagnetic unit upon detecting a predetermined condition; 2) a fuse coupled between the control circuit and the power supply; and 3) an end life sensing and indicating circuit coupled to the control circuit.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: May 19, 2009
    Assignee: Wenzhou Sansheng Electrical Co., Ltd.
    Inventor: Ping Wang
  • Patent number: 7532096
    Abstract: A non-contact auxiliary switch for a circuit breaker includes a target having first and second positions corresponding to open and closed positions of separable contacts. A non-contact sensor is responsive to the first and second positions of the target to generate first and second output signals. A movable slider member carries the target and is structured to slide within a holder inside the housing of the circuit breaker and to be coupled to and moved by an operating mechanism responsive to the open and closed positions of the separable contacts. This effects one of the first and second positions of the target when the separable contacts are closed and the other of the first and second positions of the target when the separable contacts are open.
    Type: Grant
    Filed: October 19, 2005
    Date of Patent: May 12, 2009
    Assignee: Eaton Corporation
    Inventor: Mark O. Zindler
  • Patent number: 7528732
    Abstract: A fire alarm device and method capable of informing people with visual and hearing difficulties of occurrence of fire. A fire detection means (1) detecting the occurrence of fire is connected to an emission control means (4). A smell emitting means (9) activated by the emission control means 4 is also connected to the emission control means (4). The fire detection means (1) activates the emission control means (4) when detecting the occurrence of fire. The emission control means (4) is provided with a smell condition-setting means so as to set starting time for continuously-emitted smell, and to set emission periods, emission intervals and emission concentrations for intermittently-emitted smell. The smell emitting means (9) will be activated in accordance with the conditions set by the smell condition-setting means.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: May 5, 2009
    Assignee: Pixen Inc.
    Inventors: Yukinobu Tajima, Hideki Yanagawa, Naoki Urusibata
  • Patent number: 7525441
    Abstract: An apparatus for testing the life of a leakage current protection device having a leakage current detection circuit and a trip mechanism. In one embodiment, the apparatus includes a ground fault simulation circuit for generating a simulated ground fault during every negative half-wave of an AC power, a signature signal generating circuit for generating a signature signal reflecting the characteristic of the leakage current detection circuit and the trip mechanism, when the simulated ground fault is generated, and a life testing detection control circuit having a microcontroller and an alarm circuit. In operation, the life testing detection control circuit receives the signature signal from the signature signal generating circuit, analyzes the received signature signal to determine whether at least one fault exists in the leakage current detection circuit and the trip mechanism, and activates the alarm circuit if the at least one fault exists.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: April 28, 2009
    Assignee: General Protecht Group, Inc.
    Inventors: Feng Zhang, Hongliang Chen, Fu Wang, Wusheng Chen, Yulin Zhang, Huaiyin Song
  • Patent number: 7522064
    Abstract: An apparatus for testing the life of a leakage current protection device, comprising a microcontroller unit, at least one of a first fault detector and a second fault detector, at least one of an audio alarm and a visual alarm, a power supply circuit. In operation, the first fault detector and/or the second fault detector receive at least one signal from the leakage current protection device, and generate at least one DC voltage corresponding to the at least one signal to be received by the MCU. The MCU compares the at least one DC voltage with a predetermined threshold value to determine whether a fault exists in the leakage current protection device, and activates the alarm circuit if at least one fault exists.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: April 21, 2009
    Assignee: General Protecht Group, Inc.
    Inventors: Feng Zhang, Hongliang Chen, Fu Wang, Wusheng Chen, Yulin Zhang, Huaiyin Song
  • Patent number: 7511505
    Abstract: A centralized connector module, a refrigeration unit and a method of assembling a refrigeration unit. In one embodiment, the centralized connector module includes (1) a dielectric body having interconnected terminal sets corresponding to components connectable thereacross and (2) continuity indicator circuits associated with at least some of the terminal sets and configured to indicate continuity faults with respect to connected ones of the components.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: March 31, 2009
    Assignee: Heatcraft Refrigeration Products LLC
    Inventors: Patrick M. Bailey, Raynald C. Clarke
  • Patent number: 7495574
    Abstract: A system for remotely controlling and monitoring an electrical system includes an electrical system controlling device connected to the electrical system for monitoring and controlling the electrical system and electronic controls for monitoring and controlling the electrical system controlling device. A wireless communications interface enables remote wireless access to the electronic controls.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: February 24, 2009
    Assignee: Cooper Technologies Company
    Inventors: Richard G. Rocamora, Veselin Skendzic
  • Publication number: 20080272925
    Abstract: A circuit interrupting device is disclosed in one embodiment in accordance with the invention as including an input line to conduct electrical current from a source of electricity, a first output line to conduct electrical current to a load, and a second output line to conduct electrical current to a receptacle. A movable bridge is provided to electrically connect and disconnect the input line, first output line, and second output line, to and from one another. A circuit interrupting mechanism is provided to disconnect the input line, first output line, and second output line from one another by moving the bridge into an open position upon detection of a predetermined condition. Similarly, a reset mechanism is provided to electrically connect the input line, first output line, and second output line to one another by moving the bridge into a closed position.
    Type: Application
    Filed: May 3, 2007
    Publication date: November 6, 2008
    Inventors: L. David Griffin, J. La Var Oldham
  • Publication number: 20080231410
    Abstract: Electrical fuse indicators used to detect when fuses enter an open state. Each fuse in an electrical system may be connected to a wireless identification element, which alerts a communication unit that the fuse has entered an open state. The wireless identification device may include an antenna. The antenna may be in contact with a fuse element, such that opening of the fuse element renders the antenna inoperable. Alternatively the antenna may be connected to the fuse element in such a manner that opening of the fuse element alters the frequency on which the antenna transmits. A logic port may also be used to detect the operational state of a fuse. Use of such indicators is compatible with existing infrastructure.
    Type: Application
    Filed: March 31, 2008
    Publication date: September 25, 2008
    Inventors: Frank Anthony Doljack, Owais M. Mughal, Hundi P. Kamath, John M. Ackermann
  • Patent number: 7417554
    Abstract: A system displays information from and controls electrical switching apparatus, such as circuit breakers. The system includes a plurality of circuit breakers having separable contacts and a plurality of conditions, such as bus temperature and contact wear. A plurality of sensors are structured to sense the conditions of the circuit breakers and to communicate the sensed conditions over corresponding wireless signals. A display and control unit is operatively associated with the circuit breakers and is structured to receive the corresponding wireless signals and display information corresponding to the sensed conditions or to control the circuit breakers based upon one or more of the sensed conditions.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: August 26, 2008
    Assignee: Gaton Corporation
    Inventors: James J. Benke, Joseph C. Engel, James L. Lagree, Charles J. Luebke, Mark G. Solveson
  • Patent number: 7408274
    Abstract: A circuit for controlling at least two power switches that are series connected between a source of electrical power and an electrical load, for energizing the load in response to a signal at a control input. The circuit includes a programmed controller having an input as the control input and a voltage sensor circuit connected to sense the voltage between the power switches and apply a voltage signal to a controller input. It may also have a sensor for sensing the current through the switches and applying a current signal to the controller. The controller inputs the voltage between the switches or the current through the switches to provide a sensed first value. It compares the sensed first value to an expected first value that exists if both switches are turned off. One of the two switches is turned on if the sensed first value is equal to the expected first value.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: August 5, 2008
    Assignee: Inpower LLC
    Inventors: James D. Sullivan, John A. Melvin
  • Patent number: 7405671
    Abstract: A power failure alarm for use in sounding a warning in the occasion of a power failure, with built in electrical connectors, and a temporary source of light. The device is housed in a molded plastic enclosure in a rectangular shape and includes an emergency light, night-light, flashlight, and power failure alarm. All unit functions are completely automatic once the unit has been plugged into a standard 120 volt receptacle. The device has a three prong male plug on the back of the body and is designed to occupy one receptacle of a duplex receptacle thus leaving one receptacle still available for use. Alternate embodiments of the device are specifically intended to alert and notify the user of a power failure. The device utilized logic circuitry to determine if a power failure or improper setup has occurred. The battery charging and monitoring circuits ensure the batteries are always charged and ready for use.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: July 29, 2008
    Inventor: Andrew J. Sebescak
  • Patent number: 7403129
    Abstract: A circuit breaker includes a first lug and second and third acoustic lugs electrically connected to a power circuit. Separable contacts are electrically connected in series between the first lug and the second acoustic lug. An operating mechanism opens and closes the separable contacts. A first acoustic sensor is coupled to the second acoustic lug and senses a first acoustic signal from the second acoustic lug. A second acoustic sensor is coupled to the third acoustic lug and senses a second acoustic signal from the third acoustic lug. The first and second acoustic signals are operatively associated with a power circuit fault. A current sensor senses a current flowing between the first and second lugs. A circuit inputs the sensed acoustic signals and the sensed current and detects and distinguishes a parallel arc fault or a series arc fault from the sensed acoustic signals and the sensed current.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: July 22, 2008
    Assignee: Eaton Corporation
    Inventors: Xin Zhou, Jerome K. Hastings, Joseph C. Zuercher
  • Patent number: 7397384
    Abstract: A current limiting system in accordance with the present invention comprises an accessory or canopy mount device that is permanently installed between a source of electrical power 1 and a track lighting system 2. The system may be installed integrally with a track lighting system to supply power to a plurality of lighting tracks from a plurality of power sources or circuits, as desired by a user or lighting designer. The system may also be configured to be compatible with a wide variety of track lighting system power tracks and is difficult to remove once properly installed, thereby making it tamper-proof.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: July 8, 2008
    Assignee: Genlyte Thomas Group, LLC
    Inventors: Kenneth MacKenzie, IV, Alejandro Mier-Langner, Michael S. O'Boyle, James Edward Kuchar
  • Patent number: 7391299
    Abstract: A user interface, method system and program for circuit protector management in an electrical system.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: June 24, 2008
    Assignee: Cooper Technologies Company
    Inventors: Robert Lawrence Bender, Timothy Hamilton Speno, Michael Craig Henricks, Robert Stephen Douglass
  • Patent number: 7385518
    Abstract: A fused disconnect switch assembly includes a pull out fuse assembly and a switch housing assembly. The fuse assembly includes a line side conducting portion, a load side conducting portion, and a fuse element therebetween. The switch housing assembly includes a fuse receptacle for receiving the fuse, a first contact assembly coupled to the line side conducting portion of the fuse and a second contact assembly coupled to the load side conducting portion of the fuse when the fuse is inserted into the receptacle. An open fuse indication device is in communication with conducting portions of the fuse, and an alarm terminal output extends from the switch assembly housing and is in communication with the open fuse indication device. The open fuse indication device provides local fuse state indication and the alarm terminal output facilitates remote fuse state indication when coupled to external circuitry.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: June 10, 2008
    Assignee: Cooper Technologies Company
    Inventors: Jaime Alberto Torrez, Ronald E. Mollet, B. Heath Scoggin
  • Patent number: 7369030
    Abstract: A fuse state indicator includes an extension member, a secondary fuse link coupled to the extension member, and a contact pin configured to engage a first terminal element of a fuse. An end of the secondary fuse link is wrapped around the pin and establishes an electrical connection thereto.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: May 6, 2008
    Assignee: Cooper Technologies Company
    Inventor: Matthew R. Darr
  • Patent number: 7369029
    Abstract: An electrical fuse and method therefor includes a protective body, terminal elements extending from said protective body, and a primary fuse element extending within said protective body and electrically connected between the terminal elements, and an identification element configured to transmit a wireless signal to a remote device for determining an operational state of said primary fuse element.
    Type: Grant
    Filed: April 20, 2004
    Date of Patent: May 6, 2008
    Assignee: Cooper Technologies Company
    Inventor: John Marvin Ackermann
  • Patent number: 7339486
    Abstract: An insertion type fuse with breakage indication comprises a seat having a long receiving chamber for receiving a metal fuse; an rectangular bi-directional SMD form LED set being located on the buckle portions; the LED set being a coating device and being high temperature tolerant; the LED set being connected to a circuit; the LED including two LEDs and being serially connected with a voltage divided resistor; a fuse wire being connected between the LED set and a load; the LED set being buckled to the buckle portions; when the fuse wire breaks, light will emit out so as to show that the fuse wire breaks; thereby a break fuse can be fined rapidly. In assembly, the seat and the cover are integrally formed. The LED set is adhered to the metal fuse and then the metal fuse is assembled into the long receiving chamber.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: March 4, 2008
    Assignee: Hansor Polymer Technology Corp.
    Inventor: Jung-Sheng Huang
  • Patent number: 7324005
    Abstract: A power protection system for protection against an electrical transient surge and/or interference. Such a system can be useful in the dispensing of fuel at gas stations, convenience stores, truck stops, and other such locations, for protection of the low voltage signal wires that go from the dispenser to the store. Broadly contemplated are modular arrangements where removal of a corrupted module in a cabinet containing several modules will still keep the general communications circuit intact. Particularly contemplated are modules which include integral fuses and indicator lights.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: January 29, 2008
    Inventor: Ronald M. Stoof
  • Publication number: 20070285267
    Abstract: A circuit interrupter with end-of-life protection has four components: 1) a control circuit to activate an electromagnetic unit upon detecting a predetermined condition; 2) a fuse coupled between the control circuit and the power supply; 3) an end life sensing circuit coupled to the control circuit; and 4) an end life indicating circuit coupled to the end life sensing circuit and the power supply. The end life sensing circuit includes a light emitting device and a light sensitive device controlled by the light emitting device. The end life indicating circuit includes a visual indicator to indicate that the circuit interrupter reaches the end of its life. Another circuit interrupter with end-of-life protection has three components: 1) a control circuit to activate an electromagnetic unit upon detecting a predetermined condition; 2) a fuse coupled between the control circuit and the power supply; and 3) an end life sensing and indicating circuit coupled to the control circuit.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 13, 2007
    Inventor: Ping Wang
  • Publication number: 20070285266
    Abstract: A system for evaluating at least one tripping stimulus for a ground-fault circuit interrupter includes: a sensing circuit configured to measure a leakage current from a voltage line to ground, wherein the sensing circuit is capable of generating a leakage signal including a voltage representative of the leakage current; and an evaluating circuit configured to evaluate the leakage signal to generate an indication signal, wherein the indication signal includes information corresponding to the at least one tripping stimulus. The sensing circuit may include a circuit substantially similar to at least a portion of a ground-fault circuit interrupter, and the evaluating circuit may include a peak hold circuit. The system may further include an indicator circuit for receiving the indication signal and displaying a status of the tripping conditions.
    Type: Application
    Filed: June 8, 2006
    Publication date: December 13, 2007
    Inventors: Jeffrey Richard Angle, Ronald Wayne Hughes
  • Patent number: 7301738
    Abstract: A method and apparatus for monitoring a communication network is provided. The network includes a plurality of node electronics units communicatively coupled to at least one central control processing unit through at least one network wherein each network includes a network switch. The method includes coupling a monitoring domain to the network, and receiving at least one of network traffic transmitted on at least one of the monitored links, and network traffic received on at least one of the monitored links through at least one monitoring link. The apparatus includes a plurality of node electronics units communicatively coupled to at least one central control processing unit through at least one network wherein each network includes a network switch, and wherein the apparatus comprises a monitoring domain.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: November 27, 2007
    Assignee: General Electric Company
    Inventors: Marc Robert Pearlman, Emad Andarawis Andarawis
  • Patent number: 7253740
    Abstract: An apparatus for monitoring a temperature of a structure, comprising: one or more electrically conductive loops adapted to be affixed to the structure, each including first and second elongate connection strips each made of a first metal composition having a first melting point, and a temperature sensitive band connected between the first and second connection strips and made of a second metal composition having a second melting point less than the first melting point. The apparatus further comprises a monitor, connected to respective ends of the first and second connection strips spaced-apart from the temperature sensitive band, configured to detect an open-circuit in the one or more electrically conductive loops caused when the temperature sensitive band separates from either of the connection strips.
    Type: Grant
    Filed: March 2, 2005
    Date of Patent: August 7, 2007
    Assignee: The Johns Hopkins University
    Inventors: Russell P. Cain, Bliss G. Carkhuff, Andrew M. Lennon
  • Patent number: 7221283
    Abstract: A system for identifying a selected electrical circuit of interest from a number of electrical circuits, by locating a circuit interrupter connected to interrupt the flow of electrical power from an electrical power supply to the selected circuit of interest. The system includes a remote portion configured to detect when the selected circuit is energized, and in response to generate a wireless signal indicative thereof to a receiver portion located in the vicinity of the circuit interrupter. In response to the wireless signal, the receiver portion is configured to generate an alert indicative to an operator that the flow of electrical power is not interrupted to the selected circuit. By switching the circuit interrupter between the ON and OFF positions, the operator is able to determine from the alert at the receiver portion whether the selected circuit interrupter is connected to control the flow of electrical power to the electrical outlet, load, fixture, or wiring of interest.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: May 22, 2007
    Assignee: Reliance Controls Corporation
    Inventor: Neil A. Czarnecki
  • Patent number: 7191510
    Abstract: An electroluminescent (EL) lamp having at least two integral fusible links and a method of manufacturing such a lamp are disclosed. The present invention provides for a fusible link between the front electrode input power contact area and the transparent electrode. In addition, the present invention provides a second fusible link between the back electrode input power contact area and the transparent electrode. The fusible links are designed to become non-conductive (open) if a certain current level is exceeded. The EL lamp fails in a controlled way, without signs of combustion. The EL lamp is therefore protected from self-destruction when subject to an anomaly or manufacturing defect.
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: March 20, 2007
    Inventors: Stephen Jay Sanderson, Stephen Ray Stiles
  • Patent number: 7171317
    Abstract: This invention is intended to reduce the cost by displaying the load information of a plurality of circuits with a single display device and transferring one of the two communication units in the measuring instruments from the measuring instruments to the display device to acquire the load information of a plurality of circuits. The display device and the measuring instruments are separated from each other, and the display device includes a plurality of communications units connectable with a plurality of devices, while each of many measuring instruments includes a single communication unit.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: January 30, 2007
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kazuya Aihara, Kazuhiko Kato, Hideki Hayakawa, Tetsunori Watanabe, Toshiko Kimura
  • Patent number: 7167351
    Abstract: Faulted current indicator. Apparatus and method for observing the status of faulted current interrupters for high voltage transmission lines are described. Light emitting diodes powered by a photovoltaic voltage source are used to identify interrupters which have been tripped.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: January 23, 2007
    Assignee: Raymond & Lae Engineering, Inc.
    Inventors: Donald M. Raymond, Donald A. Raymond
  • Patent number: 7154405
    Abstract: The present invention relates to a use indicator apparatus having a power-sensing mechanism and an indicator. The indicator includes a first state and a second state wherein the indicator is maintained in the first state until a required amount of power is applied to the sensing mechanism. Upon reaching the required amount of power, indicator switches from the first state to the second state.
    Type: Grant
    Filed: August 16, 2004
    Date of Patent: December 26, 2006
    Inventor: Gary Oreman
  • Patent number: 7126488
    Abstract: Herein provided is a method and apparatus that allows a pre-existing fuse housing to be easily modified and adapted to include a blown fuse indicator light thereon. Whereby when the fuse housing and light in combination are installed within an electrical circuit and if the fuse is no longer functional, the light will automatically illuminate so as to visually notify a user that the fuse needs to be replaced. Also, any suitable light source may be used, such as an LED, a cartridge type having end contacts, a long lasting reusable incandescent lamp, fiber optics, neon, etc.
    Type: Grant
    Filed: April 2, 2005
    Date of Patent: October 24, 2006
    Inventor: Galen J. May
  • Patent number: 7123156
    Abstract: A lighted status indicator for a contact (circuit breaker, switch or fuse) with a distinctive color associated with each position of the circuit breaker. The lighted status indicator is composed of a multi-color light source (usually an LED) together with an electronic circuit that changes the color of that light source, depending upon the status (or position) of the circuit breaker, switch, or fuse.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: October 17, 2006
    Assignees: L.S. Unico, Inc., Micrin Technologies Corporation
    Inventor: Leonard Sadjadi
  • Patent number: 7109877
    Abstract: A fault condition monitoring apparatus for use with a fuse cutout includes a housing operable to be supported by the fuse cutout. The housing has first and second contacts operable to make electrical contact with fuse contacts on the fuse cutout when the housing is supported by the fuse cutout. A current sensor is mounted inside the housing and is connected to the first and second contacts. A signaling device is coupled to the current sensor and is operable to cause a signal to be produced when current sensed by the current sensor meets a criterion.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: September 19, 2006
    Inventor: Nikola Cuk
  • Patent number: 7091831
    Abstract: A method and apparatus for modifying a power distribution network in a building in order to provide data communication by using a Power Line Carrier (PLC) signal to an approximate electrical central location point of a power distribution system remote from the data entry point of the building. A passive coupler device is attached to a centrally located service panel. The passive coupler receives the Power Line Carrier (PLC) signal from the remote entry point in the building and conditions the signal for entry at the service panel onto each phase of the power distribution network.
    Type: Grant
    Filed: July 27, 2004
    Date of Patent: August 15, 2006
    Assignee: Telkonet Communications, Inc.
    Inventors: Ralph E. Crenshaw, David W. Grimes, L. Peter Larson, Andrew Pozsgay
  • Patent number: 7049973
    Abstract: A fused disconnect switch assembly includes a pull out fuse assembly and a switch housing assembly. The fuse assembly includes a line side conducting portion, a load side conducting portion, and a fuse element therebetween. The switch housing assembly includes a fuse receptacle for receiving the fuse, a first contact assembly coupled to the line side conducting portion of the fuse and a second contact assembly coupled to the load side conducting portion of the fuse when the fuse is inserted into the receptacle. An open fuse indication device is in communication with conducting portions of the fuse, and an alarm terminal output extends from the switch assembly housing and is in communication with the open fuse indication device. The open fuse indication device provides local fuse state indication and the alarm terminal output facilitates remote fuse state indication when coupled to external circuitry.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: May 23, 2006
    Assignee: Cooper Technologies Company
    Inventors: Jaime Alberto Torrez, Ronald E. Mollet, B. Heath Scoggin
  • Patent number: 7030769
    Abstract: A circuit breaker with a thermal/magnetic trip device incorporates a monitor that senses the temperature of the bimetal and the amplitude of the load current to distinguish between a thermal and a magnetic trip. If the temperature of the bimetal is above a selected value when the circuit breaker trips, a “THERMAL” trip light emitting diode (LED) is energized, while a high load current at the time of a trip lights a “MAG” trip LED. The monitor also energizes an “ARC” LED in response to an arc fault signal from an AFCI at the time of trip, or a “GRD” LED in response to a ground fault trip. If a trip sensor, which monitors load voltage does not detect opening of the circuit breaker contacts when an arc fault or ground fault signal is generated, the corresponding LED is flashed to indicate the failure to trip. The monitor also has a “SURGE” LED to indicate a voltage surge in the protected distribution system as detected by a surge detector built into the circuit breaker.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: April 18, 2006
    Assignee: Eaton Corporation
    Inventor: Theodore J. Miller