With Grounding Means Patents (Class 337/32)
  • Patent number: 10910795
    Abstract: An arrester for surge protection is disclosed. In an embodiment, an arrester for surge protection includes a first electrode, a second electrode, a discharge chamber for enabling an electrical discharge between the electrodes in an event of an overvoltage and an insulator forming an inner wall of the arrester, wherein the inner wall has a projection.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: February 2, 2021
    Inventors: Eduard Dorsch, Frank Werner
  • Patent number: 10461442
    Abstract: A pressure contact terminal includes a component clip configured to clip an electronic component and be electrically connected with the electronic component, a pressure contact blade to be connected with a wire by pressure contact, and a step connection configured to connect the component clip and the pressure contact blade to each other at different bottom face heights. The step connection of the pressure contact terminal may prevent displacement of the pressure contact blade from being transmitted to the component clip.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: October 29, 2019
    Inventor: Tetsuro Takasaki
  • Patent number: 10256056
    Abstract: A switch device has a circuit unit that forms an electric circuit that detects at least one of disconnection and a short circuit of a wiring connecting an external device and the switch device, two terminals connected to the electric circuit, and configured to be connected to the wiring, a contact mechanism that moves in a movable direction to switch on and off of a contact of the electric circuit, and a circuit board on which the circuit unit, the two terminals, and the contact mechanism are disposed. The electric circuit comprises at least one resistive element. The circuit unit and the contact mechanism are disposed on an identical surface side of the circuit board. The resistive element is disposed in a direction perpendicular to the movable direction of the contact mechanism when viewed from at least a part of a movable range of the contact mechanism.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: April 9, 2019
    Assignee: Omron Corporation
    Inventors: Tetsuhiko Miyoshi, Kenji Kuroki
  • Patent number: 10014098
    Abstract: The invention relates to a surge protection device, comprising at least one surge arrester and one short-circuit switching device which is connected in parallel with the surge arrester, can be thermally tripped and is spring-pretensioned, wherein the abovementioned means form one physical unit. The thermal tripping means is arranged in the region where heating of the surge arrester is expected when it is overloaded, and operating or surge current does not flow through said thermal tripping means. The thermal tripping means is in the form of a stop part which releases an unlocking slide of the switching device in the event of thermal overload. The switching device has two opposite contact pieces, wherein at least one of the contacts is of moveable design and is under spring pretension in the closing direction of the switching device. The opening state of the switching device is maintained by the unlocking slide, which is released by the thermal tripping means to close the switching device.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 3, 2018
    Assignee: DEHN + SÖHNE GMBH + CO. KG
    Inventors: Helmut Hirschmann, Georg Wittmann, Edmund Zäuner
  • Patent number: 9899171
    Abstract: In order to provide a method for isolating a circuit and a thermal link, wherein the link has a very low resistance and is suitable for high currents, in particular very high short load currents, and also has a high degree of reliability, in particular under difficult conditions, such as thermal and mechanical loading which lasts for a relatively long time, for example, the invention proposes that, during the phase transition of the material of the fusible element (10) from the solid to the liquid state, the volume of the fusible element (10) increases and the pressure increases and, owing to the increase in volume and the increase in pressure, the fusible element (10) is dislodged so as to break the electrical connection.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: February 20, 2018
    Assignee: VISHAY BCcomponents BEYSCHLAG GmbH
    Inventors: Joachim Aurich, Ulf Zum Felde, Bernd Krueger, Laurent Mex, Wolfgang Werner
  • Patent number: 9865976
    Abstract: Disclosed is a system for operating a network incorporating high-density connections for increased efficiency, network operation and management. The high-density connections are incorporated into the patch panel, network switch, and cables that connects them, as well as into cable analyzers and printed circuit boards (PCBs) which allow for a complete network within a single computer running virtualization software.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: January 9, 2018
    Assignee: HD Networks, LLC
    Inventor: David N. Warren
  • Patent number: 9605769
    Abstract: A solenoid valve (200) is provided. The solenoid valve (200) comprises a fixed core (206) and a movable armature (420). The solenoid valve (200) further comprises a metallic tube bobbin (308) surrounding at least a portion of the fixed core (206) and/or the movable armature (420). A wire coil (203) is wrapped around the metallic tube bobbin (308).
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: March 28, 2017
    Assignee: Fluid Automation Systems S.A
    Inventors: Raphael Alvarez, Pierre Sirdey
  • Patent number: 9048603
    Abstract: The current diverter rings and bearing isolators serve to dissipate an electrical charge from a rotating piece of equipment to ground, such as from a motor shaft to a motor housing. One embodiment of the current diverter is substantially arc shaped with a plurality of radial channels extending there through. A conductive assembly may be positioned in each radial channel such that a contact portion of the conductive assembly is positioned adjacent a shaft passing through the center of the current diverter ring. The arc-shaped body may be particularly useful during installation over certain existing shafts.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: June 2, 2015
    Assignee: INPRO/SEAL, LLC
    Inventors: Dwight A. Vicars, Robert A. Tejano, David C. Orlowski
  • Patent number: 8217750
    Abstract: The 3-electrode surge protective device includes: a surge protective device body including: an earth electrode; a ceramic cylinder; and a pair of line electrodes; and a fail-safe spring including: an elastic mount portion; and a short-circuit portion, a conductive material that is sandwiched between the fail-safe spring and the body; and a pair of first lead pins provided on the pair of line electrodes; a second lead pin provided on the earth electrode. In a normal state, the conductive material support the short-circuit portion at a separation position where the short-circuit portion is separated from the outer peripheral face of the body and the first lead pins. In case where the body is overheated and the conductive material is melted, the short-circuit portion is moved to a contact position where the short-circuit portion comes into contact with the second lead pin and the first lead pins.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: July 10, 2012
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventor: Kazuhiko Machida
  • Patent number: 8203819
    Abstract: An electrical protection component with a short-circuiting device includes a gas-filled surge arrester that includes at least two electrodes. Preferably, one electrode in each case is arranged at the ends of the surge arrester. The electrical protection component has a thermal short-circuiting device, wherein the thermal short-circuiting device includes a clip having at least two sections. At least a first section of the clip is attached to the surge arrester by snap action. At least a second section of the clip at least partly surrounds the first section and is spaced apart from the first section by means of a fusible element. The second section has a short-circuiting link at an end. The short-circuiting link electrically connects the electrodes of the surge arrester to one another in the case where the fusible element melts.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: June 19, 2012
    Assignee: EPCOS AG
    Inventor: Peter Bobert
  • Patent number: 7701688
    Abstract: A structure for installing a lightning arrester between the cross arm mounted to the upper end of an electric pole and a power line is disclosed. A dead end clamp, the lightning arrester and an insulation reinforcing insulator are connected in series, an end of the insulation reinforcing insulator is connected to the cross arm by a shackle, a disconnector is connected to the voltage outlet portion of the lightning arrester, a grounding wire for diverting abnormal voltage to the ground is connected to the disconnector, and an insulation cover surrounds the dead end clamp and the voltage inlet portion of the lightning arrester.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: April 20, 2010
    Inventor: Yoo Cheor Jeon
  • Patent number: 6492894
    Abstract: A protective device for excess current utilizes a fuse that incorporates a printed circuit board. The printed circuit board has a trace on one side which is of a desired width, length, and thickness of material for opening if excess current for a selected duration of time is reached. The printed circuit board is mounted in an insulated housing. The lower side of the substrate may also have a conductive layer connected to the housing or ground. The printed circuit board and overvoltage protector may be tailored for impedance matching. An excess voltage protector may be incorporated with the printed circuit board for conducting to ground if excessive voltage is encountered. The housing has two terminals which are connected to the printed circuit board and voltage protector. These terminals may be conventional coaxial cable connectors.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: December 10, 2002
    Assignee: Corning Cable Systems LLC
    Inventors: Jon E. Bone, John J. Napiorkowski, Josh M. Wilken
  • Patent number: 6307462
    Abstract: A low profile mount for a disc varistor. A thermally sensitive switch is provided both for single and multiple electrode embodiments. The switch may be placed in a shorting circuit and include a spring biased conductor prevented from closure by a heat sensitive element which softens in responsive to excessive heat. The varistor may be fused to prevent excessive current from a short circuited but not open circuited varistor. Methods are also provided.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 23, 2001
    Assignee: Harris Ireland Development Company Ltd.
    Inventor: Neil McLoughlin
  • Patent number: 6204746
    Abstract: A thermal overload mechanism for providing protection to tip and ring conductors in a telecommunications system in the event of a power cross occurrence of telephone lines with power lines. The thermal overload mechanism includes a clip having front and rear spring members dimensioned for seating about a spacer element. The spacer element includes one or more recesses defined therein for accommodating securement of solid state devices. The recesses formed in the spacer elements contain a breachable membrane or wall which is breakable in the event the membrane temperature exceeds a predetermined temperature such as a temperature occurring in the event of a power cross situation. A contact configured for seating within the recess between the membrane and solid state device is provided for maintaining electrical contact with the tip and ring wires.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 20, 2001
    Assignee: Avaya Inc.
    Inventors: Adam Stuart Kane, Walter Pelosi
  • Patent number: 5952910
    Abstract: A device for connecting, and then isolating and disconnecting an arrester includes a non-conductive housing with two electrical terminals. The housing has opposite ends separated by an internal chamber. The terminals are mounted at the housing ends. A resistor engages and extends between the terminals in the housing internal chamber. A cartridge with an explosive charge is mounted in the internal chamber adjacent the resistor. A gap spacer surrounds the cartridge, is adjacent one of the terminals and is spaced from the other terminal.
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: September 14, 1999
    Assignee: Hubbell Incorporated
    Inventor: John A. Krause
  • Patent number: 5844785
    Abstract: Disclosed is a protector device designed for insertion in connecting blocks. The device includes a ground connector which has a detent on one end for receiving a ground bar from the connecting block. The other end of the connector contacts the ground electrode of a voltage surge protector element when the ground bar is inserted without any forces supplied by the housing.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: December 1, 1998
    Assignee: Lucent Technologies Inc.
    Inventors: Bassel Hage Daoud, Adam Stuart Kane
  • Patent number: 5805070
    Abstract: A system for registering a malfunction in telecommunications equipment comprises a protective device including a terminal connector pin and a ground pin connected to ground. The system also includes a housing member for housing the protective device, the housing member including a conductive member attached thereto. A main failsafe switch connects the terminal connector pin to ground through the ground pin in the event of an overvoltage, while an alarm switch connects the conductive member attached to the housing member to ground in the event of the overvoltage. An overvoltage sensitive member contacts both the main failsafe switch and the alarm switch, and retracts both the main failsafe switch and the alarm switch while in a normal operating state of the telecommunications equipment. The overvoltage sensitive member releases both switches in the event of the overvoltage.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: September 8, 1998
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventor: Tomas S. Eriksson
  • Patent number: 5644465
    Abstract: In a three-electrode surge arrester where the center electrode (3) is provided with a connecting wire (6) that projects outward radially and is provided with an outside short-circuit device, the latter consists of a two-arm spring clip (20) whose arms project axially beyond the free ends of the end electrodes and are in contact with the outside peripheral edge of the respective end electrode (1, 2) with a layer of insulating film (21) in between. Spring clip (20) has an roof-shaped arch (24) and is provided with a passage in the area of this arch that serves to secure the spring clip on connecting wire (6) of center electrode (3).
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: July 1, 1997
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gerhard Lange, Thomas Westebbe, Michael Bluhm
  • Patent number: 5561582
    Abstract: A failsafe device is shown in which a solid state surge suppressor (12) is mounted thermally coupled to a heat transfer element (42). A shorting bar (60) is attached to element (42) by a thin layer of solder chosen to melt at a selected maximum temperature. A spring (70) places a preload on the shorting bar and, upon melting the solder, rapidly moves the shorting bar into engagement with leads (T, G, R) attached to the surge suppressor to short the T and R leads to ground (G).
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: October 1, 1996
    Assignee: Texas Instruments Incorporated
    Inventors: Stephen Geishecker, Theresa A. Howarth, Vincent F. Suttmeier
  • Patent number: 5508675
    Abstract: A miniature overvoltage protection device including a back-up air gap for use in miniature telephone modules and related equipment includes a generally U-shaped bracket adapted to receive an overvoltage protection device thereon and has a bracket insulating member with a dielectric disposed between the overvoltage protection device terminals and the ground provided on a U-shaped bracket in order to provide back-up air gap protection. In addition, it may include a thermally sensitive material to insulate the overvoltage protection device from the grounding bracket which is activated upon excessive heat occurring in the overvoltage protection device.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: April 16, 1996
    Assignee: TII Industries Inc.
    Inventor: Param Mahagan
  • Patent number: 5424901
    Abstract: An improved fail-safe mechanism is provided for use with a sidactor for protecting telecommunication equipment against high voltage surges. A sidactor includes first and second end terminal pins and a central terminal pin. The fail-safe mechanism consists of a torsional type spring and a pair of insulators. The torsional spring includes a single looped portion and a pair of spring arms extending radially outwardly from the opposite sides of the looped portion. The spring arms of the torsional spring are initially formed so as to have an obtuse angle therebetween. The center of the single looped portion is disposed off-centered in relationship to the centers of the first and second end terminal pins of the sidactor during assembly in order to assure that sufficient and constant pressure is applied between the spring arms and the end terminal pins.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: June 13, 1995
    Assignee: Illinois Tool Works Inc.
    Inventors: Bjarne Frederiksen, Mohammad Masghati
  • Patent number: 5398152
    Abstract: An overvoltage protector for protection of telecommunication equipment having a pair of line terminals, and a respective pair of levers forming part of the ground circuit, with an overvoltage protective device bonded under tension between each line terminal and each respective lever. When an overvoltage destroys one or other device, or the bond between the line terminal and the respective lever disappears, that lever pivots about a single fulcrum under a force applied by a spring and the end of that lever contacts the line terminal. This ensures an electrically conductive relation between the line terminal and the ground circuit. As a result, the equipment to which the overvoltage protector is applied is protected from lightning and successive overvoltage occurrence.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: March 14, 1995
    Assignee: Northern Telecom Limited
    Inventors: George J. Borkowicz, Paul A. Taylor
  • Patent number: 5371648
    Abstract: This invention relates to a protection module provided to receive an overvoltage arrester in a receptacle and designed to plug on the protection ring of a telephone line interconnection module. The receptacle presents a receiving cavity adapted to receive overvoltage arresters of different dimensions, and it contains three elastic contacts, viz. two line contacts each with two contact strips and an earth contact with contact clamp. A thermofusible insulating shim is inserted between four additional earth lugs and the body of the overvoltage arrester in order to ensure short-circuiting of the latter in the event of functioning due to a lightning strike.
    Type: Grant
    Filed: April 13, 1994
    Date of Patent: December 6, 1994
    Assignee: Pouyet International
    Inventor: Pierre Bonvallat
  • Patent number: 5359657
    Abstract: An overvoltage protection apparatus used with a pair of telephone lines includes first voltage clamping circuitry for clamping voltage signals on the lines at a first predetermined voltage potential. The first voltage clamping circuitry is formed by at least a pair of solid-state protective chip devices and a failure mode mechanism adapted for connecting the lines to ground responsive to increased temperature of the solid-state protective chip device and providing a ground connection for the pair of solid-state protective chip devices. A pair of current limiting resistors operatively connected to the failure mode mechanism provide sneak current protection.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: October 25, 1994
    Assignee: Oneac Corporation
    Inventor: Dimitris J. Pelegris
  • Patent number: 5357568
    Abstract: A telephone line overvoltage protection method and device are provided. An overvoltage protection apparatus used with a pair of telephone lines includes first voltage clamping circuitry for clamping voltage signals on the lines at a first predetermined voltage potential; second voltage clamping circuitry for clamping voltage signals on the lines at a second predetermined voltage potential. The second voltage clamping circuitry includes filter circuitry for filtering the voltage signals when the voltage signals exceed the second predetermined voltage signals. The first voltage clamping circuitry is formed by a solid state protective device and a failure mode mechanism adapted for connecting the lines to ground responsive to increased temperature of the solid state protective device.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: October 18, 1994
    Assignee: Oneac Corporation
    Inventor: Dimitris J. Pelegris
  • Patent number: 5313183
    Abstract: A gas-tube arrester includes an arrester body containing an inert gas and having first and second electrodes positioned in spaced, facing relationship to each other and separated by an insulator. An insulating, heat-resistant film is in contact with the first electrode and has an opening and a plurality of small holes. A metal plate layered on the insulating film has an opening communicating with the opening of the insulating film. A low-melting point metal plate layered on the metal plate to cover the openings has a melting point lower than a softening temperature of the insulating film.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: May 17, 1994
    Assignee: Shinko Electric Industries Co., Inc.
    Inventor: Masataka Kasahara
  • Patent number: 5248953
    Abstract: A thermal overload protection device for electronic components, in particular for the telecommunication and data technology. The overload device has a spring-elastic shorting link 6 and a melt element 13. Tripping of the shorting link 6 performed in dependence of the fusing process of the melt element 13. In order to obtain a SERVO FAIL SAFE behavior, the spring force of the shorting link 6 is arbitrarily high. Devices 15, 17, separate from each other, are provided, according to the invention, for separately tripping and actuating the shorting link 6.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: September 28, 1993
    Assignee: Krone Aktiengesellschaft
    Inventor: Robert Honl
  • Patent number: 5247273
    Abstract: A surge absorber including a surge absorbing element for protecting communication equipment from transient surges and a thermal response switch with an automatic restoration function connected in parallel with the surge absorbing element. The inventive surge absorber prevents abnormal and deleterious heating of the surge absorbing element when continuous overvoltages or overcurrents are applied to the surge absorber.
    Type: Grant
    Filed: March 19, 1992
    Date of Patent: September 21, 1993
    Assignee: Mitsubishi Materials Corporation
    Inventors: Takashi Shibayama, Takaaki Itoh, Fujio Ikeda, Masatoshi Abe
  • Patent number: 5224013
    Abstract: A miniature station protector module for communication systems includes a hollow housing into which is disposed a pair of line terminals with a ground terminal therebetween. The line terminals extend into the hollow housing and include thereon a back-up surge arrester in axial alignment with each of the terminals, either a three terminal surge arrester or a pair of two terminal arresters may be utilized having one electrode connected to the ground terminal with the other electrodes being connected to the line terminals.
    Type: Grant
    Filed: December 26, 1990
    Date of Patent: June 29, 1993
    Assignee: TII Industries Inc.
    Inventor: Emanuel J. Pagliuca
  • Patent number: 5195015
    Abstract: A line protector for a communications circuit comprises a housing, an over-voltage arrester received in said housing and having axially opposite electrodes and a ground strip for coupling one of the electrodes to electrical ground. An over-current arrester has at least one line contact for electrically contacting a communications line. A conductive sleeve electrically contacts a second communications line to be joined with the first communications line, the sleeve also being assembled with the over-current arrester and with the over-voltage arrester, such that the over-voltage arrester is held within the housing. The sleeve has projecting fingers for completing an electrical circuit between the second communications line and the other of the electrodes of the over-voltage arrester.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: March 16, 1993
    Assignee: Reliance Comm/Tec Corporation
    Inventor: Richard T. Kaczmarek
  • Patent number: 5157580
    Abstract: The invention relates to a protective plug (1) for connector banks (20) of telecommunication and data systems, comprising a housing (2) for receiving protective elements (7, 8, 9) connected to establish an electrical connection to an earth rail (44) and with a disconnector contact (43) to a bifurcated contact (41) or to circuit tracks (10) provided on a plug tongue, resp. The disconnector contact (43) is provided with terminal contacts (53) for incoming and outgoing cable conductors. In order to provide a protective plug (1) which protects against overvoltages and serves as well as a fuse against overcurrents and for which the outside dimensions allow a close-fit construction of several protective plugs (1), the plug tongue (5) is a printed-circuit board (4, 4a) extending into the housing (2). Two housing compartments (21, 22) are formed inside the housing (2).
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: October 20, 1992
    Assignee: Krone Aktiengesellschaft
    Inventors: Gunter Hegner, Klaus-Peter Achtnig
  • Patent number: 5101317
    Abstract: An overload protector for a telecommunications system with an overcurrent protection device for each signal line in a chamber formed between a housing and a base and in which the base carries the line and ground pins and also an overvoltage device for each pair of the signal pins, the overvoltage device disposed at the base. In one construction, each overvoltage device comprises a solid state semi-voltage surge protection device at the base and a ground conductor extends laterally of the base between the ground pin and the device.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: March 31, 1992
    Assignee: Northern Telecom Limited
    Inventors: Casimir Z. Cwirzen, Eric A. Scheithauer, Arnold M. Ladd
  • Patent number: 5029302
    Abstract: A fail-safe arrestor for electrical circuits utilizes a gas-filled tube to conduct at an over-voltage and also provides a clip to solidly couple the circuit to a ground lead at the melting from continuous current flow of an insulator interposed between an electrode and the ground lead, which insulator is a mesh with a plurality of passages allowing arcing between the electrode and clip at or above a predetermined voltage, and thus the ground lead, for a vented gas-filled tube.
    Type: Grant
    Filed: August 29, 1990
    Date of Patent: July 2, 1991
    Assignee: Illinois Tool Works
    Inventors: Mohammad Masghati, Edwin G. Swick
  • Patent number: 5027100
    Abstract: A gas tube fail safe device for use in individual subscriber circuit telephone mmodules and related equipment, in which a fusible element is adapted to by-pass the conductive function of the gas tube in the event of gas tube failure. In one embodiment the construction provides for the fusing of the fusible element upon the occurrence of a sustained current overload. In another embodiment, this operation is supplemented by provision of secondary air gap means operative upon the occurrence of momentary excess voltage surges in the presence of a defective gas tube.
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: June 25, 1991
    Assignee: Porta Systems Corp.
    Inventors: Helmuth Neuwirth, Carl H. Meyerhoefer, William V. Carney
  • Patent number: 5008772
    Abstract: An improved telephone subscriber circuit protector module providing plural surge voltage and excess current protection elements including so-called sneak current protection. The module includes a three-element gas tube which protects against voltage surges in the range of 200 to 300 volts, and includes fail safe protection relative to the gas tube should the gas tube become non-conductive over its intended range of protection. The fail safe protection is thermally operated under the influence of high current. Secondary air gap protection supplements the operation of the gas tube in the event of gas tube failure, and is operative to ground momentary voltage surges in the area of 1500 volts. Separate sneak current protection employing heat coils are operative in a range below one ampere flow, and an alternate form provides for the opening of the subscriber side of the line rather than the grounding of it. All of the protective elements communicate with a common ground plane forming part of a ground assembly.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: April 16, 1991
    Assignee: Porta Systems Corp.
    Inventors: Helmuth Neuwirth, Carl Meyerhoefer, William V. Carney, Peter Visconti
  • Patent number: 4980909
    Abstract: An individual telephone subscriber circuit module for use with laminar type connector blocks employing conventional three-element gas tubes of diameter greater than the thickness of an individual lamina. The module houses two gas tubes in side-by-side relation and straddles two adjacent laminae on the block to protect a pair of adjacent circuits.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: December 25, 1990
    Assignee: Porta systems Corp.
    Inventors: Carl Meyerhoefer, Peter Visconti, Michael Fasano
  • Patent number: 4912592
    Abstract: A gas filled surge arestor has at least one external air back-up gap comprising two spaced electrodes(7a,2 or 7a,3), one (7a) of which has at least one sharp edge or corner (9) adjacent the other electrode (2 or 3). The said one electrode (7a) is resiliently urged towards the other electrode and is coated with an insulating material (8) which prevents the two electrodes from being in direct contact and hence short circuiting. The arrangement is such that, although the sharp edge or corner (9) on said one electrode has a covering of insulating material, it is also separated from the other electrode by an air gap.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: March 27, 1990
    Assignee: Cooper (UK) Limited
    Inventors: John D. Flindall, Kelvin Loader
  • Patent number: 4910489
    Abstract: A fail-safe secondary fuse device for assuring the grounding of a conductive gas tube used in modular protection devices for individual subscriber circuit pairs. The device resiliently engages each of the three end and center electrodes normally provided on the tube. In the case of the end electrodes, the device is insulated from direct electrical communication by a fusible sleeve of insulative material which fuses under heat emanating from the gas tube with the occurrence of continued current overload.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: March 20, 1990
    Assignee: Porta Systems Corp.
    Inventors: Helmuth Neuwirth, Carl Meyerhoefer
  • Patent number: 4907120
    Abstract: A line protector for a communications circuit. The protector has a three electrode gas tube, the end electrodes of which are connected to the protector's line input terminals. The middle electrode of the tube is connected to the protector's ground terminal. Decoupling devices such as positive temperature coefficient resistors are connected in series between the line input terminals and the protector's equipment terminals. The protector also includes an additional overvoltage arrestor in the form of two diodes connected between the protector's ground terminal and the equipment terminals. The diodes have a lower voltage rating than the gas tube. A conductive clip which is in firm engagement with the protector's ground terminal is used to removably hold the diodes.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: March 6, 1990
    Assignee: Reliance Comm/Tec Corporation
    Inventors: Richard Kaczmarek, William L. Weber
  • Patent number: 4901188
    Abstract: A line protector module device for a communications circuit having a line protector circuit assembly including a base, a frame having a retaining portion, a spring mounted to the base, an arrester and a solder pellet compressibly held between the spring and the retaining portion of the frame. The spring is constructed of a strip of material which is formed in an S-shape. The spring has tabs formed in the material so that when the spring is subjected to a predetermined amount of compressive force, the tabs prevent nonrecoverable compression.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: February 13, 1990
    Assignee: Reliance Comm/Tec Corporation
    Inventor: Alexander Gilberts
  • Patent number: 4887183
    Abstract: A thermal protection device for overvoltage suppressor which includes spaced contacts 6 mounted in overvoltage suppressor magazines 11 of communication systems. A bow-type spring 3 and a melt element 2 l are arranged with the overvoltage suppressor which is mounted in a chamber of a case body or housing 13. The melt element is pierced by at least one arm of the bow-type spring when an overvoltage occurs for short-circuiting the two contacts of the overvoltage suppressor. A thermal protection device with simple components prevents creepage currents between the bow-type spring and the contacts of the overvoltage suppressor 6, a chamber for the overvoltage suppressor is adjacent and abutting to a separate chamber formed in the case body for accommodating a bow-type spring. Between the two chambers there is a separating wall comprising a thermoplastic melt element.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: December 12, 1989
    Assignee: Krone AG
    Inventors: Lutz Biederstedt, Manfred Muller
  • Patent number: 4882748
    Abstract: A series of individual telephone subscriber circuit modules for use with telephone connector blocks having flat insulation displacement clips projecting from a planar surface thereof. The block mounts a grounding strip medially positioned on said surface. The modules employ known protection components, and in various modifications, are suitable for providing alternatively three point protection or five point protection utilizing either or both of gas tube and fuse components. Depending upon specific requirements, each module protects either two or four subscriber circuits.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: November 21, 1989
    Assignee: Porta Systems Corp.
    Inventor: Carl Meyerhoefer
  • Patent number: 4876626
    Abstract: A central office protector module which includes a light to provide a visual indication whenever the module shorts either of the lines protected by the module to groud as a result of either a sustained overcurrent or overvoltage condition on either line. The module includes a sixth or alarm pin in addition to the two line pins, two equipment pins and one ground pin usually included in the module. The module also includes two internal alarm terminals which are each associated with a respective one of the lines. The light is connected to those terminals and a source of voltage. The alarm terminals are connected to ground to complete the circuit to the light when the associated line is connected to ground within the module.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: October 24, 1989
    Assignee: Reliance Comm/Tec Corporation
    Inventor: Richard Kaczmarek
  • Patent number: 4866562
    Abstract: A self-contained air gap spark arrester assembly is disclosed which may be constructed and tested prior to its incorporation into a fail-safe surge arrester assembly. The air gap spark arrester assembly comprises a rivet shaped electrode, on which are concentrically mounted an insulating ring, a ring electrode, and an insulating spacer ring. These elements are arranged so as to provide an air gap between the two electrodes, aproximately equal to the thickness of the spacer ring and shielded from particulate contamination. Due to the placement of the assembly's electrodes, it is particularly well suited for combination with gas tube arresters in metal canisters. In one embodiment the canister is of cylindrical form and houses a fusible alloy spacer, a cylindrical gas discharge tube, and the air gap spark arrester assembly.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: September 12, 1989
    Assignee: TII Industries, Inc.
    Inventor: Raymond D. Jones
  • Patent number: 4866563
    Abstract: A transient suppressor device assembly having at least two electrical components and a fail-safe clip. The fail-safe clip has means for simultaneously providing the necessary electrical conductive paths, providing fail-safe operation if an electrical component becomes overheated and holding together the electrical components.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: September 12, 1989
    Assignee: Semitron Cricklade, Ltd.
    Inventors: Christopher-George Howard, Norma A. Doughty
  • Patent number: 4866561
    Abstract: The lightning arrester device comprises an external metal casing (1) defining an enclosure (2) containing a neutral gas, and at least one metal rod (3a, 3b) forming an electrode and penetrating into the interior of the casing, insulating sealing means (4) being provided between the rod and the casing in order to close said casing, and comprising, moreover, at least one fusible element (5) adapted to create a short circuit between the electrode (3a, 3b) and the casing (1) when the quantity of energy to be diverted by the lightning arrester device exceeds a specified threshold.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: September 12, 1989
    Assignee: Compagnie Industrielle de Tubes et Lampes Electriques Citel
    Inventor: Michel Dorival
  • Patent number: 4794362
    Abstract: A fuse for an alternating current power circuit. The fuse comprises an input terminal (4), a first contact (5) electrically connected to the input terminal, an output terminal (9) and a second contact (8) electrically connected to the output terminal. A fusible element (11) electrically connects the first and second contacts and completes a normal electrical path between the input and output terminals. An arcing contact (6) is positioned in relation to the first contact (5) so as to form a potential arc path between the first contact and the arcing contact, along which path an arc will become established after the fusible element breaks in response to fault current. The arcing contact (6) is electrically connected to a third terminal (41) and is electrically isolated from the output terminal (9).
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: December 27, 1988
    Assignee: Y.S. Securities Limited
    Inventors: Martin C. Oakes, David W. Klaus
  • Patent number: 4737880
    Abstract: A station protector for communication lines includes a line terminal formed for electrical connection to the communication lines and affixed to a base member of electrical insulator material. The base member has a well into which an arrester cartridge can be threaded. There is a grounding element affixed to the base member, the grounding element including an extending grounding member located outside the area of the well. A spring electrically connects the line terminal to a surge voltage arrester if an arrester cartridge is properly positioned in the well, and grounds the line terminal in the absence of the arrester cartridge or any part thereof.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: April 12, 1988
    Assignee: GTE Products Corporation
    Inventor: Nils P. Mickelson
  • Patent number: 4736269
    Abstract: A protector module (30) for protecting the conductors of a telephone loop cludes a pair of protector assemblies (40-40') which are supported within a common housing (32). A gas tube voltage protection subassembly (42) of each protector assembly is connected electrically to a grounding subassembly (44) for causing current associated with excessive voltage surges to be conducted to ground. A first electrode includes a portion which extends through annular dielectric and metallic members and an opening of an open-ended metallic container (93) to engage a shunting element (62) of a current protection subassembly (41). The superimposed annular members are held in engagement with the first electrode at a substantially constant pressure by axial forces applied by turned-in portions (109--109) of a side wall of the metallic container. The shunting element is supported at one end of the line pin in an initial position by a fusible material.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: April 5, 1988
    Assignee: American Telephone and Telegraph Company, AT&T Technologies, Inc.
    Inventors: John M. Amein, Floyd J. Garner, E. Walton Horne, III, Raymond A. Levandoski, Charles McGonigal, Robert L. Sweatt
  • Patent number: 4733325
    Abstract: A protector module (30) for protecting tip and ring conductors of a telepe loop includes a pair of protector assemblies (40--40') which are supported within a common housing (32). A voltage protection subassembly (42) of each protector assembly is connected electrically to a grounding subassembly (44) for causing current associated with excessive voltage surges to be conducted to ground. Each protector assembly also includes a current protection subassembly (41) which comprises a dielectric base, as well as a tubular line pin (61) and a central office pin (57) which are connected together electrically. A shunting element (62) is disposed concentrially about and is supported at one end of the line pin in an initial position by a pellet (70) of a fusible material which extends between a closed end of the shunting element and an edge surface (68) of an open end of the line pin.
    Type: Grant
    Filed: September 23, 1986
    Date of Patent: March 22, 1988
    Assignee: American Telephone and Telegraph Company AT&T Technologies, Inc.
    Inventor: Robert P. Loesch