Conductor Identification Or Location (e.g., Phase Identification) Patents (Class 324/66)
  • Patent number: 7071702
    Abstract: A multi-jack detector for detecting states of a plurality of jacks. Each jack comprises a first switch having a first normally closed terminal and a first output terminal. The multi-jack detector comprises a plurality of bias resistors each coupled to one of the first output terminals, respectively; a control unit for determining the states of the plurality of jacks; wherein the first normally closed terminals are commonly coupled to a first node and the control unit determines the states of the plurality of jacks according to a voltage at the first node. Because the voltage at the first node is different for each state of the jacks, the detector can detects the states of the jacks using a single I/O pin.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: July 4, 2006
    Assignee: Realtek Semiconductor Corp.
    Inventors: Ming-Jane Hsieh, Chuting Su, Yi-Shu Chang, Ming-Lih Lin
  • Patent number: 7057401
    Abstract: A system for testing and documenting the electrical wiring in a building, for example, includes a Portable Circuit Analyzer (PCA) that is connected to the building's Load Center through an umbilical cord. The PCA is in wireless communication with a hand-held computer device, such as a personal digital assistant (PDA) as now widely available, provided with custom software according to the invention. The electrician connects the PCA in succession to each circuit in the building, operating each switch, and each fixture or appliance, while recording the test results of the circuit element on the PDA. The PCA measures the resistance and length of each circuit thus established. When the test process is completed, the PDA is enabled to generate a complete schematic diagram of the building, including, for example, an identification of the branch circuit to which each fixture, outlet, appliance, or other load or connection point is connected.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: June 6, 2006
    Assignee: Pass & Seymour, Inc.
    Inventor: Frederick K. Blades
  • Patent number: 7053598
    Abstract: The scheme for detecting the plug-in status by using single bit generated by a network with serial resistors, comprising a plurality of jacks having a spring switch, wherein the number of the plurality of jacks can be selected depending on the demand and a plurality of resistors followed the spring switch and connected in serial. Output voltage-generating resistor is coupled to the plurality of resistors in parallel to obtain the output voltage, thereby determining the plug-in status. Wherein the plurality of jacks and the plurality of resistors construct a multi-jack network, a first terminal of the multi-jack network refers to a common node between a first connecting terminals of the spring switch of the plurality of jacks and a first resistor of the plurality of resistors, the first terminal being coupled to a first reference voltage, a second terminal of the multi-Jack network refers to a common node between the second connecting terminals of the last jack and the last resistor.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: May 30, 2006
    Assignee: C-Media Electronics, Inc.
    Inventors: Wen-Lung Shieh, Chih-Hung Tseng
  • Patent number: 7049937
    Abstract: Apparatus for use with a cable for interconnecting electronic devices is described. The apparatus includes an indicator for identifying a characteristic of the cable, and includes a mechanism operable to cause the indicator to identify the characteristic of the cable. The indicator can be for example an LED and can be used to identify the location of an end of the cable. The mechanism can be a pushbutton located at the other end of the cable. The LED is illuminated when the pushbutton is activated. A signal generator is responsive to the pushbutton and provides a signal to the LED to cause the LED to illuminate. The signal generator can be implemented with a DMTF encoder.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: May 23, 2006
    Assignee: Nortel Networks Limited
    Inventors: Jonathan M. Zweig, Joseph M. Allem
  • Patent number: 7031859
    Abstract: A line phase identification system and method identifies the phase of a power line at a remote unknown-phase line (160) in a three-phase power distribution network (100). The instantaneous phase of a known-phase line (150) is measured and saved each GPS second using a 1-pps time mark of a GPS receiver (660). The instantaneous phase at the unknown-phase line (160) is measured at a single GPS second using the 1-pps time mark of a GPS receiver (660) and compared to the phase measurement taken from the known-phase line (150) at the same GPS second. The differential phase between these simultaneously taken known and unknown instantaneous phases will be close to either 0, +120, or ?120 degrees, thus identifying the line phase at the line under test (160).
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: April 18, 2006
    Inventor: Gregory H. Piesinger
  • Patent number: 7026803
    Abstract: A capacitive amplifier and tone generator detect and amplify an electrical tone conducted by one of a group of wires or a pair of wires in order to identify and trace a particular wire or pair of wires. The capacitive amplifier has a probe for being placed adjacent a wire under test, an input terminal coupled to the conductive probe for receiving an input signal therefrom, a suppression unit coupled to the input terminal for receiving the input signal and for suppressing the noise signals, and an amplifier coupled to the suppression unit to amplify the noiseless output signal. The suppression unit can include an analog/digital converter, a digital/analog converter, a CPU and a memory for suppressing noise frequencies contained in the digital signal values by subtracting from the input signal a time-delayed signal wherein a time-delay period corresponds to a period of the unwanted noise frequency.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: April 11, 2006
    Inventor: Michael Kurth
  • Patent number: 7005841
    Abstract: A process allows the relative locating of a first electrical appliance and a second electrical appliance by the measurement of a first number of alternations or of electrical periods by the first electrical appliance from the energizing of the said first part and up to transmission of a signal by the first electrical appliance, the measurement of a second number of alternations or of electrical periods by the second electrical appliance from the energizing of the said second part and up to receipt of a signal from the first electrical appliance and the comparison of the first number with the second number.
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: February 28, 2006
    Assignee: Thomson Licensing
    Inventor: Xavier Grobon
  • Patent number: 6998994
    Abstract: The present invention is a technique for locating and identifying a failed filter/arrester in an underground conveyance such as a fiber optic cable. A sensor is installed in the filter/arrester housing to sense grounding of a cable locating frequency. The sensor will monitor the cable locating signal that is normally on the cable and blocked by the filter arrester to ground. A small radio frequency oscillator (85 to 88 Hz), also installed inside the filter housing, is activated by the sensor. The RF signal is detected above ground with standard cable locating equipment. A warning indicator such as an indicator light may also be installed on the outside of the filter housing. The indicator is also activated by the sensor. In that way, the particular failed filter can be identified if multiple filters are installed at that location. The power that will be required to operate the RF transmitter and indicator will be obtained from the voltage passing through the cable.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: February 14, 2006
    Assignee: AT&T Corp.
    Inventors: Connie H. Barnes, John K Boland, II, Hossein Eslambolchi, John Sinclair Huffman, Linard H. Miller, Randall G. Scholz
  • Patent number: 6984990
    Abstract: Apparatus for detecting connection state between stereo earphone plug and corresponding jack of mobile communication terminal. The apparatus includes an earphone jack having two terminals which are disconnected from each other only when an earphone plug is inserted into the jack; a switching unit connected to one of the two terminals, and driven only when the two terminals are connected to each other; a comparator connected to the switching unit, for generating a first state signal when the switching unit is driven, and generating a second state signal when the switching unit is not driven; and a controller for receiving the first or second state signal from the comparator, and determining whether the earphone plug is connected to the jack according to the first or second state signal.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: January 10, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ok-Jo Shin
  • Patent number: 6975242
    Abstract: This specialized networking cable includes a plurality of twisted copper wire pairs encased in a flexible sheath for effectuating transmissive interconnections, electrically activated telltales affixed to both ends of the cable at positions adjacent to and connected to at least one of the copper wire pairs for providing an identification signal when activated; and means for selectively applying a current to the cable that activates the telltales and does not interfere with the flow of data through the cable whereby the telltales may be activated on at least one of the twisted copper pairs. An LED and an electric power connector suitable for plug-in connection of a power pack are affixed to the cable adjacent each end such that both LEDs are lighted whenever power is applied to either of the electrical connectors. The attendant illumination of the LEDs readily indicates where both ends of the networking cable are located.
    Type: Grant
    Filed: February 7, 2003
    Date of Patent: December 13, 2005
    Inventors: John Dannenmann, Ronald Helgerson
  • Patent number: 6963192
    Abstract: A device for tracing electrical cable. The device allows a cable installer or service person not only to identify one wire or cable in a group, but to simultaneously remotely identify as many cables as he desires. The device requires only that the installer connect a test device to each of the cables which he wishes to identify. Additionally, this identification is extremely easy to accomplish, as the “Identifying label” is in the installers own spoken words, and can be heard at the remote end by using existing industry standard test equipment (i.e.: an installer's test set, phone, headset, or amplified probe).
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: November 8, 2005
    Inventor: James A. Schultz
  • Patent number: 6944553
    Abstract: Systems, methods, and computer program products are provided that can facilitate providing test data for communications cables to remotely located customers. A customer accesses a server of a cable manufacturer via a client program executing on a client device. The server accepts entry of identification information for a communications cable (e.g., a unique identifier printed on the cable at predetermined intervals) via the remotely located client device. The server retrieves test data for the communications cable based on the entered information and provides the retrieved test data to the client device.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: September 13, 2005
    Assignee: CommScope Properties, LLC
    Inventor: Scott Jeffrey Minch
  • Patent number: 6906505
    Abstract: The invention provides a device for accurately locating ends of cords, wires cables or conduits, in particular in the fields of electricity, electronics, telephone and computer. The device includes an optical fiber disposed on a cord and extending from a first end to a second end of the cord. The optical fiber includes a first fiber end disposed at the first end of the cord and a second fiber end disposed at the second end of the cord. The device further includes a means for injecting light disposed proximate the first fiber end, the first fiber end being accessible so as to be illuminated by the means for injecting light and the second fiber end being accessible so as to recover the light injected at the first fiber end. Said device is useful for locating computer switching cords.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: June 14, 2005
    Inventors: Patrice Brunet, Eric Tande
  • Patent number: 6900629
    Abstract: A group wiring device which has built-in light emitting means and switch mechanism coupled with wire pair receptacle thereof. The switch mechanism is normally on a “CLOSE” status but can be switched to an “OPEN” status when a plug mates with the wire pair receptacle. When the switch mechanism is “CLOSE” and a testing voltage is applied to the circuit of the light emitting means, the light emitting means will emit light for assisting wire pair identification. After the process of wire pair identification is complete, the group wiring device is deemed to be in normal operation, that is, to perform ordinary signal transmitting functions. The wire pair receptacle will then be mated with plug of network cable so as to drive the switch mechanism to become “OPEN”. Therefore, the circuit of light emitting means becomes an open circuit and provides no function at all.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: May 31, 2005
    Inventors: Richard Hwang, Memiee Hwang, Wayne Hwang, Jim Hwang
  • Patent number: 6894504
    Abstract: A method and apparatus for pre-qualifying lines with respect to estimating the insertion loss of the line is presented. End-to-end insertion loss at high frequencies is estimated from measurements made at low frequencies through the voice switch at the central office of a telephone company. An AC voltage waveform is applied to the telephone line being tested. Real and imaginary components of the resultant waveform are measured. These measurements are captured and used to estimate the insertion loss of the telephone line at frequencies in the range of 40 kHz to 300 kHz.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: May 17, 2005
    Assignee: Teradyne, Inc.
    Inventor: Roger Faulkner
  • Patent number: 6885180
    Abstract: An apparatus and method for electrical cable identification that is both expeditiously and easily deployed, lightweight to facilitate on-person portability, and provides quick on-site identification of both primary and secondary cables, including grounded secondary cables/conductors.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: April 26, 2005
    Inventors: Emory W. Benson, Tim Foster
  • Patent number: 6879144
    Abstract: An identification and organization system using color coding and alphanumeric labels for matching components of a proximity measurement system includes: (1) a color code system to identify the type or series of proximity probe used with the proximity measurement system, and (2) an alphanumeric labeling system to identify the system length (i.e., the length of the extension cable plus the length of the proximity probe). Installation and maintenance of proximity measurement systems can be more reliably performed by the color code and alphanumeric labeling system.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: April 12, 2005
    Inventors: Gene P. Ort, Quentin J. Bach
  • Patent number: 6859045
    Abstract: A cable-testing arrangement for rapidly testing a plurality of telecommunications cables includes a cable-testing adapter by which test signals can be directed along the plurality of cables from a patch panel at once. A technician completes the tests by making appropriate measurements at the terminations of the cables without having to return to the patch panel until all measurements have been taken.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: February 22, 2005
    Inventor: Javier Fernandez
  • Patent number: 6847213
    Abstract: A LAN tester has display and remote units each having a connector jack attached to an adapter board for connection to the plug of a patch cord. Both the display and remote units have circuits which are capable of measuring the phase between a drive signal voltage and the corresponding coupled or reflected signal due to the drive signal. Scattering parameters for the mated connector pairs and the patch cord itself are measured during a field calibration. A computer in one or both of the tester units stores the measured scattering parameters and uses the scattering parameters to move the reference plane to any desired location along the patch cord. Channel link or permanent link tests can be conducted using the same equipment.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: January 25, 2005
    Assignee: IDEAL Industries, Inc.
    Inventors: Gerald W. Renken, Keith H. Davis, Ed Pivonka
  • Patent number: 6833712
    Abstract: A system for detecting a board-insertion power-on versus a chassis power-on is disclosed. By using recessed circuit board sense contacts, recessed chassis sense contacts, or equivalent, a circuit can detect when power reaches a circuit board's power contacts before the circuit board sense contacts mate with corresponding chassis sense contacts. On the other hand, if a circuit board is fully seated when chassis power is first applied, the circuit will not detect that power has reached the power contacts before the sense contacts are mated, resulting in a different output. The circuit can include a latch, the output of the latch representing either a board-insertion power-on or a chassis power-on. The output of the latch can be used to modify a software or hardware condition or state, resulting in improved operation.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: December 21, 2004
    Assignee: 3Com Corporation
    Inventors: Brian Fitzpatrick, Dwight Dipert, Russ Panzarella
  • Patent number: 6813537
    Abstract: In an electrical apparatus wherein electrical devices are interconnected by coupling connectors and a desired interconnection of devices is achieved by an intended interconnection of mating components of coupling connectors, identification elements in one mating component of each connector produce identification signals representing identity of the mating component. Decoding means responsive to the identification signals produce an error signal representing an interconnection of connector components differing from the intended interconnection and, means responsive to the error signal effects a response when the actual interconnection of components differs from the intended interconnection of components. Responses are, advantageously, activation of an error indicator, inhibition of application of power to affected devices, or, with program controlled systems, display of a text error message, facilitation of user intervention for error correction, or automated re-programming to overcome interconnection errors.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: November 2, 2004
    Assignee: D-M-E Company
    Inventors: Thomas Linehan, Fred Schroeder, John Khalaf, Todd Johnston
  • Patent number: 6809505
    Abstract: Described are a system and method of detecting an improperly connected cable in a storage system. A system includes an enclosure having boards. Each board of the enclosure has a communications port that receives a message identifying a redundant backend network to which that board is connected. The enclosure determines whether the system has an improper cable connection by determining from the messages whether the boards are connected to the same redundant backend network.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: October 26, 2004
    Assignee: EMC Corporation
    Inventors: Douglas E. Peeke, Brian K. Bailey, Geoffrey Reid, James M. Tuttle
  • Patent number: 6807497
    Abstract: A method and system for determining and compensating for phase and time errors in an optical receiver. The method and system includes use of a measurement and reference signal; deriving phase and time errors; and providing compensation values to the optical receiver. The operating frequency and/or other operating parameters associated with phase and time errors are determined and recorded to allow for proper compensation to the optical receiver.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: October 19, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: Lee Charles Kalem, David Todd Dieken
  • Patent number: 6798183
    Abstract: A test device for assisting in locating a cable efficiently provides both tone and link pulses simultaneously to a cable under test. The link pulses are alternated between transmit and receive pairs on the cable.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: September 28, 2004
    Assignee: Fluke Corporation
    Inventors: Thomas K. Bohley, Thomas Doumas, Mark Keisling
  • Publication number: 20040174153
    Abstract: An apparatus and method for electrical cable identification that is both expeditiously and easily deployed, lightweight to facilitate on-person portability, and provides quick on-site identification of both primary and secondary cables, including grounded secondary cables/conductors.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 9, 2004
    Inventors: Emory W. Benson, Tim Foster
  • Publication number: 20040160227
    Abstract: An apparatus (100) and method (300) for determining the status of a electric cable (20) is provided. The apparatus (100) rigidly includes a probe (104) having coaxial contacts (150, 152) and including a melt unit (102) configured to melt an insulating jacket (32) of the cable (20), an instrumentation unit (106) coupled to the probe (104) and housing a cable analysis circuit (186), a status display unit (188) coupled to the instrumentation unit (106), an insulated shank (108) coupled to the instrumentation unit (106), and a hotstick adapter (110) coupled to the insulated shank (108). The cable analysis circuit (186) includes a connection determination circuit (200) configured to determine if an electrical connection between the probe (104) and the cable (20) is a valid connection, and a status determination circuit (222) configured to determine the status of the cable (20) while the electrical connection is a valid connection.
    Type: Application
    Filed: February 11, 2004
    Publication date: August 19, 2004
    Inventor: Gregory H. Piesinger
  • Patent number: 6777952
    Abstract: The integrity, connection and location of cable wire termination extending between two different points is checked for shorts between wires and open wires. The actual remote termination plug configuration can be mapped from testing end to determine remote plug wiring. The actual location of the remote terminated end is identified either by a visual indicator, a electronically recorded message made by operator at time of cable termination, or both.
    Type: Grant
    Filed: January 29, 2002
    Date of Patent: August 17, 2004
    Assignee: Elenco Electronics Inc.
    Inventor: Arthur F. Seymour
  • Publication number: 20040145486
    Abstract: A utility power line cable selector system used by a lineman to eliminate guessing which buried cable in a ditch has been de-energized when compared to similar buried cables that are still energized with high voltage 60 Hz. power line current and disposed next to the de-energized cable. The selector system includes a battery operated low power 1 Hz. pulse generator adapted for connecting to a near end of a de-energized cable. The generator is designed to deliver a dc current spike and excite the otherwise de-energized conductor at one second intervals. At a far end of the de-energized cable is connected to a jumper cable. At a location midspan or between the near end and far end of the de-energized cable, the lineman holds a portable hand-held signal pick up clamp and cable detector unit. The signal pick up clamp is placed around a portion of each of the cables in the ditch.
    Type: Application
    Filed: January 28, 2003
    Publication date: July 29, 2004
    Inventors: George Campbell, Eugene Campbell
  • Patent number: 6768314
    Abstract: In order to provide a method for reliably detecting that an operation device, such as a sensor or an actuator, is connected to a proper connector of a control device, a connection detecting method includes the steps of reading an identification signal of the operation device, comparing the identification signal with a predetermined signal assigned to the operation device at the control device, and determining if the identification signal matches the predetermined signal. The system also includes a step of sending a connection failure warning after the determining step is repeated for predetermined times.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: July 27, 2004
    Assignee: Takata Corporation
    Inventors: Naohiko Shimizu, Eiji Yanagi
  • Publication number: 20040135570
    Abstract: A capacitive amplifier is described for detecting and amplifying an electrical tone conducted by one of a group of wires or a pair of wires in order to identify and trace a particular wire or pair of wires. The capacitive amplifier comprises a probe for being placed adjacent a wire under test, an input terminal coupled to the conductive probe for receiving an input signal therefore, a suppression unit coupled to the input terminal for receiving the input signal and for suppressing the noise signals, and an amplifier coupled to the suppression unit to amplify the noiseless output signal. The suppression unit can be composed of an analog/digital converter, a digital/analog converter, a CPU and a memory for suppressing noise frequencies contained in the digital signal values by subtracting from the input signal a time-delayed signal wherein the time-delay period corresponds to the period of the unwanted noise frequency.
    Type: Application
    Filed: September 30, 2003
    Publication date: July 15, 2004
    Inventor: Michael Kurth
  • Patent number: 6750643
    Abstract: A group wiring patching device which has built-in light emitting device and filtering device coupled with wire pair receptacle thereof. When a testing voltage is applied to the circuit of the light emitting device, the light emitting device will emit light for assisting wire pair identification. The filtering device can minimize or even eliminate loop back shorting resulted by the circuit of the connected light emitting when communication signals or low voltage signals being applied thereto. Therefore, the group wiring patching device of the present invention will be able to perform ordinary signal transmitting functions without the need to remove the light emitting device after the wire pair identification process is done.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: June 15, 2004
    Inventors: Richard Hwang, Wayne Hwang, Memiee L. Hwang
  • Publication number: 20040108845
    Abstract: The scheme for detecting the plug-in status by using single bit generated by a network with serial resistors, comprising a plurality of jacks having a spring switch, wherein the umber of the plurality of jacks can be selected depending on the demand and a plurality of resistors followed the spring switch and connected in serial. Output voltage-generating resistor is coupled to the plurality of resistors in parallel to obtain the output voltage, thereby determining the plug-in status. Wherein the plurality of jacks and the plurality of resistors construct a multi-jack network, a first terminal of the multi-jack network refers to a common node between a first connecting terminals of the spring switch of the plurality of jacks and a first resistor of the plurality of resistors, the first terminal being coupled to a first reference voltage, a second terminal of the multi-Jack network refers to a common node between the second connecting terminals of the last jack and the last resistor.
    Type: Application
    Filed: December 9, 2002
    Publication date: June 10, 2004
    Inventors: Wen-Lung Shieh, Chih-Hung Tseng
  • Publication number: 20040095243
    Abstract: A non-linear junction detector (“NLJD”) detects junctions between two materials exhibiting dissimilar electronic or electrical properties, such as semiconductor junctions or junctions between dissimilar metals. A target junction is illuminated with energy at a fundamental RF frequency and reflections from the non-linear junction are analysed to determine the type of junction detected. The NLJD automatically controls the power output level of a transmitter emitting the illuminating signal so as to drive the signal strength of said received signals towards a predetermined value, e.g. a minimum threshold value. Advantages of the invention are improved system efficiency and the elimination of target saturation effects and unwanted device triggering/indications.
    Type: Application
    Filed: December 15, 2003
    Publication date: May 20, 2004
    Inventors: Steven John Holmes, Andrew Barry Stephen
  • Patent number: 6728662
    Abstract: A remotely configurable locator system includes a detection device to locate concealed underground conductors. The detection device is configured to connect to a communications network via a graphical user interface. Also included is a database management tool configured to connect to the communications network and communicate with the detection device via the communications network. A database is included and is adapted to store data related to the detection device wherein the data is configured to be accessed by the database management tool. Finally, the graphical user interface is configured to permit a user to remotely perform one of updating, analyzing, and diagnosing the detection device based upon the accessed stored data.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: April 27, 2004
    Assignee: Radiodetection Limited
    Inventors: Nicholas J. Frost, Jason J. Hanlon, Andrew B. Lewis, Stephen F. Ridley, Michael J. Morgan, Marcus Baker, Gary P. Hiscox, Richard D. Pearson
  • Publication number: 20040061486
    Abstract: Described are a system and method of detecting an improperly connected cable in a storage system. A system includes an enclosure having boards. Each board of the enclosure has a communications port that receives a message identifying a redundant backend network to which that board is connected. The enclosure determines whether the system has an improper cable connection by determining from the messages whether the boards are connected to the same redundant backend network.
    Type: Application
    Filed: September 26, 2002
    Publication date: April 1, 2004
    Inventors: Douglas E. Peeke, Brian K. Bailey, Geoffrey Reid, James M. Tuttle
  • Patent number: 6690151
    Abstract: An apparatus is described for determining whether the power applied to two outlets is in phase or out of phase. Two plugs are used, one for engaging each of the outlets. A circuit coupled to both plugs includes a plurality of indicators, and in one embodiment two indicators indicate the presence of power at each of the plugs, and the third, whether the power is in phase or out of phase.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: February 10, 2004
    Assignee: And Yet, Inc.
    Inventor: Martin H. Graham
  • Publication number: 20040021452
    Abstract: A group wiring patching device which has built-in light emitting means and filtering means coupled with wire pair receptacle thereof. When a testing voltage is applied to the circuit of the light emitting means, the light emitting means will emit light for assisting wire pair identification. The filtering means can minimize or even eliminate loop back shorting resulted by the circuit of the connected light emitting means when communication signals or low voltage signals being applied thereto. Therefore, the group wiring patching device of the present invention will be able to perform ordinary signal transmitting functions without the need to remove the light emitting means after the wire pair identification process is done.
    Type: Application
    Filed: August 5, 2002
    Publication date: February 5, 2004
    Inventors: Richard Hwang, Wayne Hwang, Memiee L. Hwang
  • Publication number: 20040000898
    Abstract: A plurality of signal generators and a probe are used to identify, locate and trace a large number of wires in a multiple wire electrical system. Each wire to be traced is electronically marked with a signal generated by a signal generator coupled to the wire in which the signal is unique among a plurality of signal generators. Generated signals are uniquely distinguishable based upon their unique physical characteristics, inclusion of a unique identifier and/or inclusion of a unique voice message. Unique voice messages can be dynamically recorded by the user or synthetically generated. A non-contact signal receiver, or probe, detects and traces the signals emitted from the electronically marked wires. Based upon the unique characteristics of a generated signal or upon a unique identifier within the signal, the signal is identified by the probe and the wire is located.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: Trace Technologies, Inc.
    Inventors: Joel E. Pool, David W. Thomas, Lee F. Parker
  • Patent number: 6667610
    Abstract: A cable phase identification system and method identifies the phase of a power cable at a remote location in a three-phase power distribution network. The instantaneous phase at a known phase location is measured and saved each GPS second using the 1 pps time mark of a GPS receiver. The instantaneous phase at an unknown phase location is measured at a single GPS second using the 1 pps time mark of its GPS receiver and compared to the phase measurement taken at the known phase location at the same GPS second. The differential phase between these simultaneously taken known and unknown cable instantaneous phase measurements will be close to either 0, +120, or −120 degrees, thus identifying the cable phase at the unknown phase location.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: December 23, 2003
    Inventor: Gregory Hubert Piesinger
  • Patent number: 6658191
    Abstract: The present invention is a flexible plastic membrane which supports embedded components such as light emitting diodes and plastic pressure switches, and conductors on a plastic ribbon which connects the embedded light emitting diode and plastic pressure switch to a connector. The flexible plastic membrane supports an adhesive which enables it to be stick to the surface of the module faceplate. The inventive structure is more economical to build and install than presently used mechanical spring loaded push switches and light emitting diodes as they must be physically mounted to the face plate and hardwired when the module is manufactured. In addition, the inventive structure can be replaced in the field when a fault develops without disturbing or disconnecting the optical fiber connected to the front or rear of a module.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: December 2, 2003
    Assignee: Fitel USA Corp.
    Inventors: Michael G. German, Mark Richard Jennings, Frank S. Leone, Richard J. Pimpinella
  • Publication number: 20030215062
    Abstract: An apparatus is provided for testing a communications line. The apparatus comprises a spool having at least eight terminals, and a length of wire wound on the spool. The wire has at least four subpairs of wires, each of which has opposite ends. A first end of each of the subpairs of wires is electrically connectable to the communications line, and a second end of each of the subpairs of wires is electrically connected to a corresponding terminal on the spool.
    Type: Application
    Filed: May 17, 2002
    Publication date: November 20, 2003
    Inventors: Denis Joseph Kracker, Michael Wayne Snider
  • Patent number: 6646447
    Abstract: There is provided a method for identifying one of a plurality of neutral wires of a power transmission cable. The method comprises (a) applying a signal to a selected neutral wire, at a first point on the power transmission cable, (b) sensing a relative magnitude of the signal on each of the plurality of neutral wires at a second point on the power transmission cable that is remote from the first point, and (c) identifying the selected neutral wire from the relative magnitudes. There is also provided a system for identifying one of a plurality of neutral wires of a power transmission cable.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: November 11, 2003
    Assignee: Ambient Corporation
    Inventors: Yehuda Cern, George Kaplun
  • Patent number: 6642700
    Abstract: System for tracking or identifying the phase designation, and/or measuring the phase angle or the power angle of electrical conductors at a remote location relative to a reference location, by measuring a time delay between an external clock source such as GPS and a zero crossing or other specified part of the waveform, associating a ‘time tag’ with each measurement, transmitting the time tags and measurement values over a bi-directional link between a field unit and a reference unit, and calculating and displaying a relative phase angle and/or a phase designation. The system finds application, for example, in identifying the phase of conductors, and optionally comparing their phase angle and/or their power angle, before making connections between conductors in a multi-phase electrical power distribution system.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: November 4, 2003
    Assignee: Avistar, Inc.
    Inventors: Walter R. Slade, Scott James Frankenberg, Donald A. McCandless, Christopher W. Hickman
  • Publication number: 20030184275
    Abstract: System for tracking or identifying the phase designation, and/or measuring the phase angle or the power angle of electrical conductors at a remote location relative to a reference location, by measuring a time delay between an external clock source such as GPS and a zero crossing or other specified part of the waveform, associating a ‘time tag’ with each measurement, transmitting the time tags and measurement values over a bi-directional link between a field unit and a reference unit, and calculating and displaying a relative phase angle and/or a phase designation. The system finds application, for example, in identifying the phase of conductors, and optionally comparing their phase angle and/or their power angle, before making connections between conductors in a multi-phase electrical power distribution system.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 2, 2003
    Applicant: PUBLIC SERVICE COMPANY OF NEW MEXICO
    Inventors: Walter R. Slade, Scott James Frankenberg, Donald A. McCandless, Christopher W. Hickman
  • Publication number: 20030180592
    Abstract: It has been difficult to reduce a waste of energy in a fuel cell power generating process when, for example, a temporary rise or drop of a power load occurs. A fuel cell power generation system includes: load detection means 103 of detecting power requested by a load 104; and output control means 102 of accumulating a time at which a detected power requested by the load 104 is equal to or larger than a predetermined value when a fuel cell body 101 does not generate power to be supplied to the load 104, and allowing the fuel cell body 101 to start generating power to be supplied to the load 104 according to a predetermined rule based on an accumulation result.
    Type: Application
    Filed: November 13, 2002
    Publication date: September 25, 2003
    Inventors: Tetsuya Ueda, Osamu Ogawa, Jiro Suzuki, Shinji Miyauchi
  • Publication number: 20030173943
    Abstract: An apparatus is described for determining whether the power applied to two outlets is in phase. Two plugs are used, one for engaging each of the outlets. A circuit coupled to both plugs includes a plurality of indicators, and in one embodiment two indicators indicate the presence of power at each of the plugs, and the third, whether the power is in phase or out of phase.
    Type: Application
    Filed: March 12, 2002
    Publication date: September 18, 2003
    Inventor: Martin H. Graham
  • Publication number: 20030169029
    Abstract: A cable phase identification system and method identifies the phase of a power cable at a remote location in a three-phase power distribution network. The instantaneous phase at a known phase location is measured and saved each GPS second using the 1 pps time mark of a GPS receiver. The instantaneous phase at an unknown phase location is measured at a single GPS second using the 1 pps time mark of its GPS receiver and compared to the phase measurement taken at the known phase location at the same GPS second. The differential phase between these simultaneously taken known and unknown cable instantaneous phase measurements will be close to either 0, +120, or −120 degrees, thus identifying the cable phase at the unknown phase location.
    Type: Application
    Filed: December 12, 2002
    Publication date: September 11, 2003
    Inventor: Gregory Hubert Piesinger
  • Publication number: 20030160600
    Abstract: An apparatus for detecting currents in a three-phase power transmission system includes a first detection circuit electrically coupled to a first the three-phase transmission system, a second detection circuit electrically coupled to a second phase of the three-phase transmission system different than the first phase, and an event output switch electrically coupled to the first detection circuit and the second detection circuit and configured to actuate when a subsynchronous current at least one of the first phase and the second phase exceeds a pre-selected subsynchronous current setpoint.
    Type: Application
    Filed: February 27, 2002
    Publication date: August 28, 2003
    Inventors: William Herbert Sahm, Stanley A. Miske, Daniel Herbert Baker, Bruce Edward English, John Michael Kern, Carol Conde Miske
  • Patent number: 6590374
    Abstract: A terminator unit for use in wiring networks for naming wiring outlets, for verifying the normality of the wiring and for avoiding antenna effect, comprising a connector having a plurality of contacts, a first set and a second set of plurality of resistors. The resistors of the first set are connected each between one common point and a selected contact, such that a particular binary code is determined according to the particular combination of resistors connected to selected contacts. The resistors of the second set, suitable for avoiding antenna effect, are connected between one common point and each of the contacts. When the connector is joined to a matching outlet of the wiring, the particular binary code is remotely recognized through the wiring by sensing the resistors and the continuity of the wiring and the absence of short circuits are verified by measuring the resistors of the second set.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: July 8, 2003
    Inventor: Yoram Har-Lev
  • Patent number: 6577243
    Abstract: This specialized networking cable includes a plurality of twisted copper wire pairs encased in a flexible sheath for effectuating transmissive interconnections, electrically activated telltales affixed to both ends of the cable at positions adjacent to and connected to at least one of the copper wire pairs for providing an identification signal when activated; and apparatus for selectively applying a current to the cable that activates the telltales and does not interfere with the flow of data through the cable whereby the telltales may be activated on at least one of the twisted copper pairs. An LED and an electric power connector suitable for plug-in connection of a power pack are affixed to the cable adjacent each end such that both LEDs are lighted whenever power is applied to either of the electrical connectors. The attendant illumination of the LEDs readily indicates where both ends of the networking cable are located.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: June 10, 2003
    Inventors: John Dannenmann, Ronald Helgerson