In Communication Systems Patents (Class 361/119)
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Patent number: 6747862Abstract: A system and method for providing high voltage resistance capability in a receptacle apparatus for accepting a high-density compliant pin connector. A plurality of high-density compliant pin through-holes are formed in a printed circuit board for receiving the pins of the high-density compliant pin connector. The through-holes are plated using an electrically conductive material, whereby conductive pads are formed around the plated through-holes on at least one side of the printed circuit board. Thereafter, the conductive pads around the plated through-holes on the printed circuit board are removed by controlled depth back-drilling so as to increase the inter-pad clearance of the through-holes for withstanding foreign voltages.Type: GrantFiled: July 17, 2000Date of Patent: June 8, 2004Assignee: AlcatelInventor: Steven Skeoch
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Patent number: 6744614Abstract: The gas insulated electrical gear includes at least one tank which is filled with a dielectric, gas and which is provided with a rupture disk which ruptures in the event of the dielectric gas in the tank reaching an excessive pressure so as to allow the gas to be exhausted from the tank. The rupture disk is protected against attack from the environment outside the tank by being placed inside the enclosed cabinet having an atmosphere in which temperature and humidity are controlled. The cabinet can be the low voltage and/or mechanical control supporting cabinet fitted to the electrical gear.Type: GrantFiled: December 3, 2001Date of Patent: June 1, 2004Assignee: AlstomInventors: Pascal Motro, Ollivier Lauret
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Patent number: 6744393Abstract: Analog input module for a programmable logic controller, the analog input module having an input circuit with terminals for accepting either a single voltage range or a single current range from process control sensors. The analog input module includes an analog-to-digital converter and an input circuit with an output terminal connected to the input of the analog-to-digital converter, a voltage input terminal, a current input terminal, and a common terminal. The input circuit is configured to accept a voltage input between the voltage input terminal and the common terminal, to accept a current input between the current input terminal and the common terminal, and to provide an output voltage at the output terminal dependent upon either the voltage input or the current input, without switching or configuring between them.Type: GrantFiled: December 21, 2001Date of Patent: June 1, 2004Assignee: Schneider Automation Inc.Inventor: Richard H. Breinlinger
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Publication number: 20040100751Abstract: The system (1) is installed in a coaxial line for the transmission of high-frequency signals. It serves for the purpose of protecting apparatus or installations against electromagnetic pulses, overvoltages and/or lightning strokes. The system (1) comprises shortcircuit lines (5, 6), which are disposed approximately parallel to the inner conductor (3) of the coaxial line. This disposition makes possible to develop the housing (2) of the system (1) concentrically to the longitudinal axis (9) and the housing (2) has no projecting elements.Type: ApplicationFiled: August 11, 2003Publication date: May 27, 2004Inventor: Bruno Ammann
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Patent number: 6741439Abstract: A phase coupler for operable communication between at least two phases of an electrical distribution system while maintaining power isolation between the phases comprising: a capacitive circuit connected to the at least two phases and configured to transfer a signal having a predetermined frequency or frequency range from a first phase to a second phase; a first terminal in operable communication with the circuit and the first phase; a second terminal in operable communication with the circuit and the second phase; a third terminal in operable communication with the circuit and a neutral line of the electrical system; and a housing configured to house said circuit and provide for operable electrical connection between said first, second and third terminals and an outside conductor.Type: GrantFiled: November 27, 2001Date of Patent: May 25, 2004Assignee: General Electric CompanyInventors: Brad E. Parlee, Jeffrey A. Goodman
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Publication number: 20040095703Abstract: The present invention provides a conventional cable connector, such as a UMTR (Universal Male Terminator type connector), that further comprises an element for protecting the electrical components positioned within the connector from high voltage surges. The surge protection element comprises a ring that is positioned in circumferentially surrounding relation to the input pin that carries the signal being transmitted by the coaxial cable. The ring includes at least one, and preferably three prongs that extend radially inwardly therefrom and terminate in close, but non-contacting relation to the pin. If a high voltage surge of electricity is carried by the coaxial cable transmission line, such as might occur if it is struck by lightening, a spark will be formed in the gap between the prongs and the cable due to the conductive composition of the surge protection element.Type: ApplicationFiled: November 3, 2003Publication date: May 20, 2004Inventor: Noah Montena
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Patent number: 6738249Abstract: The present invention relates to an interposer substrate for interconnecting between active electronic componentry such as but not limited to a single or multiple integrated circuit chips in either a single or a combination and elements that could comprise of a mounting substrate, substrate module, a printed circuit board, integrated circuit chips or other substrates containing conductive energy pathways that service an energy utilizing load and leading to and from an energy source. The interposer will also possess a multi-layer, universal multi-functional, common conductive shield structure with conductive pathways for energy and EMI conditioning and protection that also comprise a commonly shared and centrally positioned conductive pathway or electrode of the structure that can simultaneously shield and allow smooth energy interaction between grouped and energized conductive pathway electrodes containing a circuit architecture for energy conditioning as it relates to integrated circuit device packaging.Type: GrantFiled: August 3, 2000Date of Patent: May 18, 2004Assignee: X2Y Attenuators, LLCInventors: Anthony A. Anthony, William M. Anthony
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Patent number: 6738248Abstract: An over-voltage protected integrated circuit is provided, which includes a discharge node, an input-output pad, a signal trace, which is coupled to the input-output pad, and a pair of back-to-back diodes, which is coupled between the first signal trace and the discharge node.Type: GrantFiled: October 28, 2002Date of Patent: May 18, 2004Assignee: LSI Logic CorporationInventors: Michael O. Jenkins, Brett D. Hardy, Prashant K. Singh, Donald C. Grillo, Jeffrey S. Kueng
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Patent number: 6735066Abstract: The invention relates to a protective device for an electric consumer. A residual-current circuit-breaker is located in an electrical supply line between a mains connection and a switch device of the consumer. Said residual-current circuit-breaker has a detection device for recognizing a residual current and a first interrupter for interrupting the supply of electricity from the mains connection to the switch device in accordance with a switching signal from a detection device. If an electrical energy storage device is provided in the switching device, a second interrupter is provided, this second interrupter being controlled by the residual-current circuit-breaker.Type: GrantFiled: July 22, 2002Date of Patent: May 11, 2004Assignee: Wacker Construction Equipment AGInventor: Michael Steffen
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Patent number: 6731489Abstract: A Category 5 (as well as newer revisions, such as Category 6 and Category E)/single-pair surge protector module for protecting telecommunications related equipment and the like from transient voltage and current surges includes a two-piece interfitting housing which receives a miniature printed circuit board therein. The miniature printed circuit board is used to mount a Category 5 (as well as newer revisions, such as Category 6 and Category E)/circuit surge protector device. The surge protector device includes a pair of voltage suppressors and four banks of diodes.Type: GrantFiled: August 26, 2002Date of Patent: May 4, 2004Assignee: Illinois Tool Works Inc.Inventors: Richard H. Heidorn, Mohammad Masghati
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Publication number: 20040070912Abstract: A method and system to increase the throughput of a communications system that uses an electrical power distribution system as a communications pathway, determines the phase of the power distribution power cycle and compares this determined phase to predetermined regions of the power cycle. If the power cycle is within a predetermined region, a particular communication scheme is used for transmitting and receiving information. The power cycle can have two or more predetermined regions. Optionally, the throughput for any or all regions can be determined so as to provide for modification of the associated communication scheme if the throughput is determined to be outside some predetermined range.Type: ApplicationFiled: September 30, 2002Publication date: April 15, 2004Applicant: Amperion, Inc.Inventor: Lowell Ellis Kopp
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Patent number: 6721155Abstract: A surge protector includes a coaxial through-section having a through inner conductor and a through outer conductor, a stub having a stub inner conductor, a stub outer conductor, a first end and a second end. The stub is coupled to the coaxial through-section, wherein the stub inner conductor is conductively coupled to the through inner conductor at the first end of the stub, and the stub outer conductor is conductively coupled to the through outer conductor at the first end of the stub. The stub inner conductor is substantially hollow and having at least one helical aperture disposed therein. A charge elimination device conductively coupled between the stub inner conductor and a grounding device, and a radio frequency short circuit bypass is electrically coupled between the stub inner conductor and the stub outer conductor. A DC injection port is also conductively coupled between the stub inner conductor and the stub outer conductor.Type: GrantFiled: August 23, 2001Date of Patent: April 13, 2004Assignee: Andrew Corp.Inventor: Henry G. Ryman
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Patent number: 6721156Abstract: A primary/secondary surge protector circuit for protecting telecommunications equipment from power and surge transients includes a printed circuit board and a surge protector circuit. The surge protector circuit is mounted on the printed circuit board. The printed circuit board has tip and ring conductive traces formed on its top surface. The surge protector circuit includes a voltage suppressor operatively coupled to the tip and ring conductive traces. The tip and ring conductive traces define fusible links which are opened when an excessive current is passed through so as to meet the specifications set forth by UL Standards 497 and 497A.Type: GrantFiled: January 11, 2002Date of Patent: April 13, 2004Assignee: Illinois Tool Works Inc.Inventor: Mohammad Masghati
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Patent number: 6717784Abstract: A rush current suppression circuit is used with a power supply circuit which includes a common line and an input voltage detection circuit and supplies power from an input power supply via a switching circuit. There is provided a smoothing capacitor coupled to an output end of the power supply circuit, and a rapid discharge and delay circuit coupled to the input voltage detection circuit and carrying out a rapid discharge and a time delay and controlling the switching circuit. The switching circuit includes two FETs which are coupled in series to the common line, and the two FETs have sources which are coupled to each other and gates which are coupled to each other and driven by the rapid discharge and delay circuit.Type: GrantFiled: March 26, 2002Date of Patent: April 6, 2004Assignee: Fujitsu LimitedInventors: Tomiyasu Isago, Naoki Takahashi, Yoshinori Usui, Tatsuo Araki
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Publication number: 20040057188Abstract: A telecommunications network is provided which includes a protector device for protecting an associated telecommunications line. The protector device protects the associated telecommunications line from hazardous voltages and/or currents. Further, and in accordance with the present invention, the protector device also protects the associated telecommunications line from unauthorized use. The protector device regulates the class of service provided over the associated telecommunications line. A filter circuit integral with the protector device can be readily configured to pass or block signal frequencies depending on the class of service purchased.Type: ApplicationFiled: September 24, 2002Publication date: March 25, 2004Applicant: Qwest Communications International Inc.Inventors: Bruce A. Phillips, Marc A. Wernli
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Patent number: 6707656Abstract: An over-voltage protection module protects communications equipment against voltage surges, including periodic voltage disturbances. The protection module provides a steady state activation voltage threshold and a reduced activation voltage threshold less than the steady state value. Upon a receiving a periodic disturbance, the module activates initially upon receiving a voltage exceeding the steady state activation voltage threshold and activates for subsequent cycles of the disturbance upon receiving a voltage exceeding the reduced activation voltage threshold.Type: GrantFiled: December 28, 2000Date of Patent: March 16, 2004Assignee: Cisco Technology, Inc.Inventor: Robert A. Marshall
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Publication number: 20040042149Abstract: A lightning surge protector configured for use with coaxial lines is disclosed. The lightning surge protector includes an inner conductor comprising two conductive portions mechanically and capacitively coupled together, and displaced from one another, by a dielectric material which may be injection molded or snapped onto the conductive portions. Insulating material extends between the inner conductor and an outer conductor to electrically insulate the inner conductor from the outer conductor. An inductor inductively couples the inner conductor to the outer conductor and is coupled between the two using a solderless connection. The inductor has a bent end which may be inserted in a hole in the inner conductor and a straight end that may be staked in a hole in the outer conductor. The outer conductor is formed from a case and a plug which are frictionally coupled.Type: ApplicationFiled: April 10, 2003Publication date: March 4, 2004Inventors: Edward Devine, Frances G. Devine, Ildefonso Hernandez, James Kirk, Gene S. Anderson, Frank A. Harwath
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Patent number: 6700769Abstract: A carrier assembly for a surge protection assembly includes: a connector strip; a plurality of pins extending from the connFiguresector strip; and wherein the connector strip and the plurality of pins are formed from a single piece of conductive material.Type: GrantFiled: July 26, 2001Date of Patent: March 2, 2004Assignee: General Electric CompanyInventors: Paul Joseph Phillips, Kennon Bryant Porter, Patrick Gustavo Salas, Avra Poddar, Satishbabu Palla, Veeresh Somalingayya
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Patent number: 6700770Abstract: The present invention discloses systems and methods for protecting electronic devices (switching and non-switching) such as micro electro-mechanical system (MEMS) devices and solid state relays due to lightning exposure or electrical power surges in double end exposed systems. Over voltage suppressors and over current detectors are used to limit the exposure of high voltages and currents to the MEMS and solid-state relay devices in double end exposed systems.Type: GrantFiled: March 22, 2002Date of Patent: March 2, 2004Assignee: Turnstone Systems, Inc.Inventor: Ramon C. W. Chea, Jr.
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Publication number: 20040037021Abstract: A Category 5 (as well as newer revisions, such as Category 6 and Category E)/single-pair surge protector module for protecting telecommunications related equipment and the like from transient voltage and current surges includes a two-piece interfitting housing which receives a miniature printed circuit board therein. The miniature printed circuit board is used to mount a Category 5 (as well as newer revisions, such as Category 6 and Category E)/circuit surge protector device. The surge protector device includes a pair of voltage suppressors and four banks of diodes.Type: ApplicationFiled: August 26, 2002Publication date: February 26, 2004Inventors: Richard H. Heidorn, Mohammad Masghati
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Patent number: 6688916Abstract: A signal connector having function of abrupt wave protection is provided with a grounding device on a signal transmitting cable to guide abrupt wave to the ground. Thus, electronic equipments can be normally used in a normal condition and also protected by the grounding device, which is bale to guide high voltage or large electric current to the ground if abrupt wave or lightning striking should occur.Type: GrantFiled: December 23, 2002Date of Patent: February 10, 2004Inventor: Chun Te Lee
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Publication number: 20040022004Abstract: Disclosed here is a wireless LAN system employed for quick and accurate auto gain controlling with no work load to be applied to its baseband processing block. When the wireless LAN system gets ready to receive a signal, the gain control circuit switches between the receiving antennas alternately. The gain control circuit, when receiving a signal over a predetermined receiving sensitivity, sets gain setting value time divisional data according to the level of the received signal measured by the first measurement circuit to roughly control the gain to be set in the LNA and the gain to be set in the two programmable gain amplifiers provided in the front steps of the LPF/PGA circuits. The gain control circuit then cancels the DC offset while the second measurement circuit measures the signal level.Type: ApplicationFiled: July 14, 2003Publication date: February 5, 2004Inventors: Toshihito Habuka, Masaki Noda, Hiroshi Nogami, Toyokazu Hori, Tatsuji Matsuura, Kazuaki Hori, Naoto Inokawa
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Patent number: 6687109Abstract: A central office surge protector having at least one gas tube and at least one varistor. The at least one varistor interacts with the at least one gas tube to lower the impulse breakdown voltage of the gas tube. The at least one gas tube may be a two or a three element gas tube. Alternative embodiments of the surge protector further include at least one sneak current protection element.Type: GrantFiled: November 8, 2001Date of Patent: February 3, 2004Assignee: Corning Cable Systems LLCInventors: Robert J. Bennett, Casimir Z. Cwirzen
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Patent number: 6683768Abstract: The present invention discloses systems and methods for protecting electronic devices (switching and non-switching) such as micro electro-mechanical system (MEMS) devices and solid state relays due to lightning exposure or electrical power surges. An over voltage protector and an over current protector are used to limit the exposure of high voltages and currents to the MEMS devices and solid-state relays. A relay or equivalent device is energized when a high current is sensed in the loop, which relay is used to protect the MEMS devices and solid state relays from damage. The relay can be controlled via software/hardware and works in conjunction with other components/devices in the overall systems. In this manner, any number of MEMS devices or solid state relays can be protected.Type: GrantFiled: February 6, 2002Date of Patent: January 27, 2004Assignee: Turnstone Systems, Inc.Inventor: Ramon C. W. Chea, Jr.
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Patent number: 6683773Abstract: The present invention provides a conventional cable connector, such as a UMTR (Universal Male Terminator type connector), that further comprises an element for protecting the electrical components positioned within the connector from high voltage surge. The surge protection element comprises a ring that is positioned in circumferentially surrounding relation to the input pin that carries the signal being transmitted by the coaxial cable. The ring includes at least one, and preferably three prongs that extend radially inwardly therefrom and terminate in close, but non-contacting relation to the pin. If a high voltage surge of electricity is carried by the coaxial cable transmission line, such as might occur if it is struck by lightening, a spark will be formed in the gap between the prongs and the cable due to the conductive composition of the surge protection element.Type: GrantFiled: November 30, 2000Date of Patent: January 27, 2004Assignee: John Mezzalingua Associates, Inc.Inventor: Noah Montena
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Patent number: 6680839Abstract: An apparatus and method for reducing and balancing the off-state capacitance of an overvoltage protection circuit utilizes one or more diode networks electrically connected in series with an overvoltage protection device. The overvoltage protection device is selected from the group consisting of a gas tube, an MOV, a transient voltage suppressor (TVS) diode and a TVS thyristor. Preferably, the overvoltage protection device is a solid-state overvoltage protector (SSOVP) having at least one thyristor. The diode network includes a plurality of diodes electrically connected in parallel and arranged with opposing polarities so that the circuit is bi-directional. Preferably, the diode network includes a first set of two or more stacked diodes electrically connected in parallel with a second set of two or more stacked diodes and arranged with opposing polarities, and the capacitance of the diode network is less than the capacitance of the thyristor.Type: GrantFiled: December 28, 2001Date of Patent: January 20, 2004Assignee: Corning Cable Systems LLCInventor: John J. Napiorkowski
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Publication number: 20040008467Abstract: The invention relates to a safety communication system in a automation application (5), comprising a first communication bus (19) on which at least one first safety monitor (12) is connected fitted with several outputs (13), and a second communication bus (29) on which are fitted a second inputs safety module (25), capable of generating a second safety signal, and a second safety monitor (22) receiving said safety signal and fitted with several outputs (23), on the second communication bus (29). Outputs (13) of the first safety monitor (12) are electrically connected to inputs of the second inputs module (25) so as to control at least one output (23) of the second safety monitor (22) as a function of the state of the outputs (13) of the first safety monitor (12).Type: ApplicationFiled: June 13, 2003Publication date: January 15, 2004Applicant: Schneider AutomationInventors: Jean-Marc Calandre, Andre Ganier
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Patent number: 6674626Abstract: A lightning suppression system including a first wire, a second wire, a third wire, a fourth wire, an enclosure having an interior volume, a first coil connected to the first wire and positioned within the enclosure, a second coil connected to the second wire and positioned within the enclosure, a third coil connected to the third wire and positioned within the enclosure, a fourth coil connected to the fourth wire and positioned within the enclosure, and a piece of electronic equipment interconnected to each of the coils. A conductive grit, such as steel shot, fills a portion of the enclosure around the respective coils. The lightning suppression system is for interconnection to a first twisted pair of wires and a second twisted pair of wires associated with a T1 circuit or a DSL circuit.Type: GrantFiled: June 18, 2001Date of Patent: January 6, 2004Inventors: William J. Fowler, Benjamin P. Fowler
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Patent number: 6665159Abstract: Into an internal circuit to operate in a high-frequency band, there is incorporated a protective circuit of a multistage connection which is constructed to include a plurality of diode-connected transistors having a low parasitic capacity and free from a malfunction even when an input signal higher than the power supply voltage is applied. Into an internal circuit to operate in a low-frequency band, there is incorporated a protective circuit which is constructed to include one diode-connected transistor. The protective circuits include two lines of protective circuit, in which the directions of electric currents are so reversed as to protect the internal circuits against positive/negative static electricities.Type: GrantFiled: February 20, 2001Date of Patent: December 16, 2003Assignee: Hitachi, Ltd.Inventors: Kumiko Takikawa, Satoshi Tanaka, Masumi Kasahara
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Patent number: 6661634Abstract: The present invention provides an apparatus and method for filtering electrical power to and from an electrical appliance to reduce or eliminate electromagnetic interference (EMI) and radio frequency interference (RFI). In one embodiment, an electrical outlet strip apparatus is provided for interconnection between an AC power source and an electrical appliance that provides transient voltage surge suppression for the appliance while substantially reducing or eliminating EMI from the AC power source from reaching the appliance. Additionally, the apparatus reduces or eliminates EMI produced by the appliance from propagating into the AC power system. The apparatus and method utilize a multistage EMI filter to filter the electrical power. In particular, the electrical power is filtered in a broadband range associated with digital subscriber line (DSL) systems to provide for improved DSL system performance.Type: GrantFiled: January 8, 2002Date of Patent: December 9, 2003Assignee: Qwest Communications International, Inc.Inventors: John A. Roberts, Jr., Bruce A. Phillips, Carlton Francis Scott Schneider
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Patent number: 6654223Abstract: A surge arrester mounting unit is provided for telecommunications and data systems technology. The arrester includes an upper part and lower part made of plastic, and metallic contact elements which are arranged in pairs and which engage, by means of spring arms, in chambers of the upper part in order to made contact with surge arresters. The contact elements have contact blades which project out of the lower part. In order to enable the surge arrester mounting unit also to be used for terminal blocks with high transmission rates, the invention provides for the contact blades (11) for separating contact fingers (directed into the interior of a terminal block) (1)), from insulation piercing contact elements (4) to be made approximately twice as long as the spring arms (19) and to be given more than double the material thickness (d) at the free end by bending over.Type: GrantFiled: December 29, 1999Date of Patent: November 25, 2003Assignee: Krone GmbHInventors: Hans-Dieter Bippus, Bryce Lindsay Nicholls
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Patent number: 6650525Abstract: The present invention is a surface mount component carrier comprised of a disk of insulating material having at least two apertures. The disk is substantially covered by a metalized ground surface and includes at least two conductive pads surrounding the apertures, and insulating bands which surround each conductive pad. The insulating bands separate and electrically isolates the conductive pads from the metalized ground surface. A surface mount component, such as a differential and common mode filter, is positioned lengthwise between the two conductive pads and operably coupled to the carrier. Once the surface mount component is coupled to the carrier, the combination can be manipulated, either manually or through various types of automated equipment, without subjecting the surface mount component to mechanical and physical stresses normally associated with the handling of miniature components.Type: GrantFiled: August 31, 2001Date of Patent: November 18, 2003Assignee: X2Y Attenuators, LLCInventor: Anthony A. Anthony
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Patent number: 6646850Abstract: A high-voltage power breaker includes two arcing contact pieces which are separated from one another when disconnected and between which an arc is struck in an arcing area. The arcing area is filled with a quenching gas, where the quenching gas has been heated by the arc flowing out from a constriction point of an insulating nozzle. The insulating nozzle surrounds the arcing area, through at least one outlet flow channel which has a number of areas which the quenching gas passes through successively. The first area which faces the constriction point of the nozzle has a specific flow resistance which is less than that of the constriction point. The first area in the outlet flow direction of the quenching gas is followed by at least one second area, one third area and one fourth area. The specific flow resistance of the second and fourth areas are each greater than the specific flow resistance of the immediately preceding area in the outlet flow direction.Type: GrantFiled: December 11, 2001Date of Patent: November 11, 2003Assignee: Siemens AktiengesellschaftInventors: Ralf Bergmann, Hold Dienemann, Joerg Hagen, Hartmut Knobloch, Volker Lehmann, Friedrich Loebner, Michael Punger, Claudia Wiesinger
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Patent number: 6644994Abstract: A connector with a function of getting rid of surge includes a connecting head made of metal, a clasp made of metal, placed in the connecting head and having a pinching portion made of two parallel elastic pieces, a base plate and an emitting pieces formed in the other end of the clasp, and an insulating housing. A gap is formed between the upper end of the emitting member and the inner surface of the connecting head so that a surge or a thunderbolt may flow through the gap to the connecting head and be led to the ground to disappear.Type: GrantFiled: May 2, 2002Date of Patent: November 11, 2003Inventor: Chun Te Lee
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Patent number: 6639779Abstract: A frequency selective transient voltage protector (FSTVP) circuit that may be used in connection with a communication line over which POTS and DSL service may be simultaneously provided. The FSTVP circuit attenuates high frequency transient voltages that exceed a predetermined voltage level, while permitting low frequency, generally high voltage signals (e.g., ring signals) and high frequency, low voltage signals (e.g., DSL signals) to pass with little or no attenuation. The FSTVP circuit comprises a frequency selective network (that comprises a frequency discriminator and a voltage discriminator) connected to an overvoltage protection device that shunts any high frequency transient voltages thus protecting devices connected downstream along the communications line from damage. The frequency selective network is tuned to gate the overvoltage protection device when the frequency and voltage of a signal present on the communication line exceed predetermined values.Type: GrantFiled: December 19, 2001Date of Patent: October 28, 2003Assignee: Oneac CorporationInventors: Vincent L. Knigge, Paul F. Haake
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Patent number: 6636407Abstract: A surge protector includes a coaxial through-section having a first inner conductor and a first outer conductor and a stub having a second inner conductor and a second outer conductor. The stub has a first end and a second end, the stub being coupled to the coaxial through-section, wherein the second inner conductor is conductively coupled to the first inner conductor at the first end of the stub and the second outer conductor is conductively coupled to the first outer conductor at the first end of the stub. The second inner conductor is substantially hollow and has at least one helical aperture disposed therein. A charge elimination device is conductively coupled between the second inner conductor and a grounding device. A radio frequency short circuit bypass is electrically coupled between the second inner conductor and the second outer conductor.Type: GrantFiled: September 13, 2000Date of Patent: October 21, 2003Assignee: Andrew CorporationInventor: Henry G. Ryman
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Patent number: 6636408Abstract: A coaxial transmission line surge protector assembly is provided which includes a connector housing having an outer conductor surface for electrically coupling with the outer conductor of a coaxial transmission line. A housing inner conductor, for electrically coupling with the inner conductor of a coaxial transmission line, which includes a fuse link that becomes an open circuit when the current through the fuse link is greater than a current threshold. The protector assembly may further include a gas tube having first and second electrodes for electrically coupling with the outer and inner conductors of a coaxial transmission line. In addition, the protector assembly may include a fail-short clip having a first portion that is electrically coupled to the first electrode of the gas tube and a second portion that is electrically insulated from the second electrode of the gas tube by a dielectric.Type: GrantFiled: March 26, 2001Date of Patent: October 21, 2003Assignee: Marconi Communications, Inc.Inventor: Emanuel J. Pagliuca
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Patent number: 6636404Abstract: An integrated overvoltage and overcurrent circuit protection device for use in telecommunication circuits. The integrated circuit protection device combines a overcurrent device such as a fuse and a overvoltage protection device such as a thyristor to respectively protect against overcurrent conditions and transient overvoltages. Integration of multiple devices in a common package ensures proper coordination and matching of the components, reduces the final product cost and reduces the physical space required on a telecommunications circuit for overvoltage and overcurrent circuit protection.Type: GrantFiled: August 28, 2000Date of Patent: October 21, 2003Assignee: Littelfuse, Inc.Inventors: Stephen J. Whitney, David Zhang, Scott Davidson
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Patent number: 6633477Abstract: The object of the invention is to provide a conductive member capable of attenuating the noise having frequency components, for example, of the order of several GHz efficiently. Signal line 21 is formed by using the first conductive paste containing a silver powder, a ferrite powder, an organic binder, a dispersant, and a solvent.Type: GrantFiled: March 23, 2001Date of Patent: October 14, 2003Assignee: Koninklijke Philips Electronics N. V.Inventors: Kenichi Horie, Hiroyuki Ishida
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Patent number: 6628498Abstract: An electrical circuit protection device has an overcurrent protection portion and an overvoltage protection portion. The overcurrent protection portion has a surface. The overvoltage protection portion is disposed on the surface. In one preferred embodiment, the overcurrent portion includes a PTC device and the overvoltage portion includes a voltage variable material. A number of terminations are configured to connect the overcurrent protection portion and the overvoltage protection portion to a printed circuit board.Type: GrantFiled: July 31, 2001Date of Patent: September 30, 2003Inventors: Steven J. Whitney, Nate Maercklein, Rob Deblieck, Scott Davidson
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Patent number: 6628497Abstract: An overvoltage protector bridge circuit for protecting telecommunications equipment against voltage surges on transmission lines utilizes an overvoltage protection device in a bridge circuit having multiple diodes arranged in series or in parallel on each leg of the circuit. The overvoltage protection device conducts when it reaches a threshold voltage potential. The overvoltage protection device is electrically connected between a pair of connection nodes in the bridge circuit. The bridge circuit is made up of multiple diodes arranged along each of the legs of the circuit, which extend between the tip line and the ring line and the connection nodes. At least two diodes are arranged in series or in parallel along each leg of the bridge circuit to steer the excess voltage on the tip line or the ring line, or both, through the overvoltage protection device to ground.Type: GrantFiled: September 7, 2000Date of Patent: September 30, 2003Assignee: Corning Cable Systems LLCInventors: John J. Napiorkowski, Josh M. Wilken
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Patent number: 6625280Abstract: A balanced heat coil protector protects telecommunications equipment from excessive sneak currents through a telecommunications circuit having a ring conductor and a tip conductor. An electrically conductive grounding pin is supported within and extends through the base for providing a path to ground potential. A first electrically conductive line pin and a first electrically conductive central office pin are supported in the base and extend therethrough, the first line pin and first central office pin being electrically connected to each other by a first conductive wire to provide a normal circuit current path from the first line pin to the first central office pin.Type: GrantFiled: November 1, 1999Date of Patent: September 23, 2003Assignee: Avaya Technology Corp.Inventors: David Kerr, Walter Pelosi, Mikhail Sumetskiy
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Patent number: 6625001Abstract: In a directional tap, a splitting circuit receives a video signal from an input port and outputs a distributed video signal corresponding to the video signal from the input port at each of multiple directional output ends. Each of multiple directional output terminals is connected electrically to a respective one of the directional output ends for outputting the distributed video signal to a client end. One of multiple surge protection circuit units is connected between the input port and an input of the splitting circuit. The remaining surge protection circuit units are connected between a respective directional output end of the splitting circuit and a respective directional output terminal. Each surge protection circuit unit includes an inductor having a first terminal connected electrically to the splitting circuit, and a second terminal cooperating with a ground terminal to define a gap.Type: GrantFiled: January 17, 2002Date of Patent: September 23, 2003Assignee: Cable Vision Electronics Co., Ltd.Inventor: Micki Tseng
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Patent number: 6618235Abstract: A voltage transient suppression circuit for power electronic circuits comprising: a snubber circuit having a resistor and a first and second capacitive element connected in series with a switching power semiconductor; and a sensing logic device connected in parallel with the snubber circuit; the logic circuit being configured to receive voltage signals indicative of said first and second capacitive elements.Type: GrantFiled: March 28, 2002Date of Patent: September 9, 2003Assignee: General Electric CompanyInventors: Robert Gregory Wagoner, Fred Henry Boettner, William Duggan Brackman, Jr., James Michael Nowak
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Patent number: 6614636Abstract: An input/output filtering system having a single-phase tri-mode over-voltage protection and disconnect circuit for use with peripheral devices. The system prevents the accidental reversal of the line wire with the neutral wire from adversely affecting at least one peripheral device and the overheating and destruction of MOVs in the over-voltage protection circuit. In the event of a sufficiently high voltage causing excessive heating of the MOVs, the hot line will be disconnected from the peripheral device through the use of fuses placed beside each MOV. An audible alarm indicates that a protection device has absorbed an excessive energy. The system further employs an input filter and a plurality of output filters. Such filtration is applied to that noise which travels through an Internet line as well as through a basic power line.Type: GrantFiled: November 14, 2000Date of Patent: September 2, 2003Assignee: Monster Cable Products, Inc.Inventor: Richard N. Marsh
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Patent number: 6606231Abstract: A protection device includes a substrate capable of suppressing electromagnetic fields, with a channel formed therein, a current dependent circuit interrupter disposed inside the channel, and voltage management circuitry coupled to the substrate. The voltage management circuitry is electrically coupled to the current dependent circuit interrupter so as to form a crowbar circuit in the presence of overvoltage or undervoltage conditions as determined according to a reference voltage.Type: GrantFiled: October 24, 2001Date of Patent: August 12, 2003Assignee: Occam NetworksInventor: Mark Rumer
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Patent number: 6606232Abstract: A failsafe surge protector having a reduced part count includes a line terminal, a gas tube assembly, at least one ground spring for biasing the gas tube assembly in the direction of the line terminal, and a ground terminal. The gas tube assembly includes a gas tube, a fusible solder pellet, a failsafe ground, an MOV, and an MOV spring. The surge protector provides a first electrical ground path from the line terminal to the ground terminal through the gas tube and the fusible solder pellet, and a second electrical ground path parallel to the first electrical ground path from the line terminal to the ground terminal through the MOV. When the fusible solder pellet melts, the ground spring biases the failsafe ground into electrical contact with the line terminal, thereby providing a short-circuit electrical path from the line terminal to the ground terminal through the failsafe ground.Type: GrantFiled: March 28, 2002Date of Patent: August 12, 2003Assignee: Corning Cable Systems LLCInventors: Chanh C. Vo, Brad N. Grunwald
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Patent number: 6603646Abstract: The present invention relates to a multi-functional energy conditioner having architecture employed in conjunction with various dielectric and combinations of dielectric materials to provide one or more differential and common mode filters for the suppression of electromagnetic emissions and surge protection. The architecture allows single or multiple components to be assembled within a single package such as an integrated circuit or connector.Type: GrantFiled: September 5, 2001Date of Patent: August 5, 2003Assignee: X2Y Attenuators, LLCInventors: Anthony A. Anthony, William M. Anthony
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Patent number: 6600642Abstract: A method for lightning protection in a printed circuit board includes providing a printed circuit board having a plurality of conductors for connecting to a plurality of telecommunications lines, surrounding a portion of the conductors with a floating element to induce any lightning received by the conductors to flow to the floating element, and disposing a ground conductor with respect to a portion of the floating element such that lightning will be induced to flow to ground from the floating element.Type: GrantFiled: December 29, 2000Date of Patent: July 29, 2003Assignee: Cisco Technology, Inc.Inventor: Joshua D. Karnes
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Publication number: 20030133246Abstract: A primary/secondary surge protector circuit for protecting telecommunications equipment from power and surge transients includes a printed circuit board and a surge protector circuit. The surge protector circuit is mounted on the printed circuit board. The printed circuit board has tip and ring conductive traces formed on its top surface. The surge protector circuit includes a voltage suppressor operatively coupled to the tip and ring conductive traces. The tip and ring conductive traces define fusible links which are opened when an excessive current is passed through so as to meet the specifications set forth by UL Standards 497 and 497A.Type: ApplicationFiled: January 11, 2002Publication date: July 17, 2003Inventor: Mohammad Masghati