Plural Unit Type (plural Complete Cables Within A Single Outside Sheath) Patents (Class 385/106)
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Publication number: 20080289851Abstract: A modular cable unit for oilfield wireline includes multiple cable modules. The cable modules are interchangeable to achieve a modular cable unit with desired telemetry and electrical properties to suit a specific application. The cable modules can be an optical fiber module, a power cable or an opto-electrical module assembly. The cable modules that make up the modular cable unit are preferably arranged in a triad configuration defining a substantially triangular tangent periphery and are surrounded by a polymeric casing having a circular periphery. The triad configuration of the modular cable unit contributes to an improved mechanical strength. A floating-tube type optical fiber element with improved mechanical strength is also disclosed.Type: ApplicationFiled: May 21, 2007Publication date: November 27, 2008Inventors: Joseph Varkey, Vladimir Hernandez-Solis, Marwan Moufarrej
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Patent number: 7440669Abstract: A thermal protection device for a fiber optic cable includes a loop formed on the cable and a plurality of sub-units within the cable removed from an outer jacket. A circumferential cut is made through an outer jacket of each sub-unit. A tube is placed about the cut in each sub-unit. A carrier is positioned about each of the tubes and each sub-unit including a circumferential cut. A fiber optic system includes a thermal protection device for sub-units of a fiber optic cable within a frame. A method of providing thermal protection for a fiber optic cable. A kit for providing thermal protection to telecommunications cables.Type: GrantFiled: November 21, 2006Date of Patent: October 21, 2008Assignee: ADC Telecommunications, Inc.Inventor: Thomas Tinucci
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Patent number: 7433564Abstract: An optical phase modulator made of lithium niobate or the like phase-modulates the output light of a single-wavelength laser light source 20 that emits CW light, and the phase-modulated light is inputted to a dispersion medium 22. The positive chirp and negative chirp of light to which frequency chirp is applied by phase modulation draw near in the dispersion medium and an optical pulse is generated.Type: GrantFiled: May 25, 2004Date of Patent: October 7, 2008Assignee: Fujitsu LimitedInventors: Fumio Futami, Shigeki Watanabe
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Publication number: 20080240662Abstract: The present invention relates to an optical cable comprising: one or more main optical fiber modules, each comprising optical fibers and an outer sheath, the optical fibers of each main module being surrounded by said outer sheath; and a protective covering surrounding said main optical fiber module(s); wherein: n main optical fiber modules, where n is an integer such that 1?n?3, are disposed inside a tube that is specific thereto, said n main modules being free inside said tube; and said cable further comprises a carrier element inside said protective covering; each of said tubes being held stationary between said carrier element and said protective covering.Type: ApplicationFiled: March 17, 2008Publication date: October 2, 2008Inventor: Real Helvenstein
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Publication number: 20080240661Abstract: The present invention relates to an optical cable comprising: one or more main optical fiber modules each comprising optical fibers and an outer sheath, the optical fibers of each main module being surrounded by said outer sheath; and a protective covering surrounding said main optical fiber module(s); the optical cable also including an internal optical cable inside said protective covering, said internal optical cable comprising at least one internal module of optical fibers, and wherein at least one internal optical fiber module of the optical fiber cable is connected to at least one of the main optical fiber modules of the optical cable.Type: ApplicationFiled: March 17, 2008Publication date: October 2, 2008Inventor: Real Helvenstein
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Patent number: 7422378Abstract: The present disclosure relates to a telecommunications cable including a distribution cable and a tether that braches from the distribution cable at a mid-span breakout location. A flexible closure covers the mid-span breakout location. Within the closure, fibers are broken out from the distribution cable and spliced to fibers of the tether. The lengths of broken out fibers within the flexible closure are provided with sufficient excess fiber length to allow the closure to be readily bent/flexed in any direction without damaging the fibers.Type: GrantFiled: July 21, 2006Date of Patent: September 9, 2008Assignee: ADC Telecommunications, Inc.Inventors: Yu Lu, Keith Millea, Jeff Gniadek
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Patent number: 7421169Abstract: An optical fiber cable that sustains reduced increase in transmission loss and optical fiber breakage when subject to external pressure exerted thereon, comprises an aggregate of elements including central buffer filaments disposed in the center part of the optical fiber cable and a plurality of optical fibers disposed around the central buffer filaments, as well as circumferential strength filaments disposed around the outer periphery of the aggregate of elements, and a sheath covering the circumferential strength filaments.Type: GrantFiled: June 18, 2004Date of Patent: September 2, 2008Assignee: Fujikura Ltd.Inventors: Takeshi Honjo, Satoru Shiobara, Tsuyoshi Shimomichi, Keiji Ohashi
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Publication number: 20080193090Abstract: An optical cable is manufactured in a single continuous process starting directly from at least an optical perform, by means of a fiber/cable integrated manufacturing line (50) including a fiber(s) drawing assembly (100) for the production of one or more optical fibers from respective optical preforms, and a cabling assembly (200) for producing the optical cable from the optical fiber(s), the cabling assembly comprising a fiber buffering assembly (200a) for the application of a loose or tight coating to the optical fiber(s), and a strengthening and sheathing sub-assembly (200b) for applying one or more reinforcing and protective layers to the buffered optical fiber(s).Type: ApplicationFiled: May 24, 2004Publication date: August 14, 2008Inventors: Kevin Riddett, Alessandro Ginocchio, Stefano Giacomo Roba
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Patent number: 7409127Abstract: Disclosed are fiber optic assemblies for adding additional nodes to a communication network. The fiber optic assemblies include a plurality of optical fibers and a plurality of electrical conductors for transmitting power with a protective sheath covering at least a portion of the same. The fiber optic assembly also includes an optical stub fitting assembly having a rigid housing attached to a optical portion of the composite cable, thereby furcating one or more optical fibers of the fiber optic cable into one or more optical fiber legs. One or more of the optical fiber legs may include one or more optical connector attached thereto. Optionally, the fiber optic assembly may further include a coaxial adapter for transmitting power.Type: GrantFiled: September 28, 2007Date of Patent: August 5, 2008Assignee: Corning Cable Systems LLCInventors: William C. Hurley, Eric R. Logan, David A. Seddon, Kenneth A. Chauvin
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Patent number: 7397993Abstract: Disclosed are fiber optic ribbons having at least one optical fiber and a protective covering such as a matrix material. The fiber optic ribbons include an attachment portion for providing the craft an installation option for securing the same. Specifically, the fiber optic ribbon has a first portion that has at least one optical fiber and an attachment portion. The attachment portion generally extends away from the first portion, thereby providing a portion of the fiber optic structure suitable for receiving a fastener therethrough without damaging the at least one optical fiber or causing undue levels of optical attenuation. Moreover, the fiber optic ribbon may be used by itself if a rugged construction is provided or can further include cable components such as a cable jacket. The fiber optic structures may also have a bulbous first portion for indicating the location of the optical fiber to the craft.Type: GrantFiled: March 30, 2007Date of Patent: July 8, 2008Assignee: Corning Cable Systems LLCInventors: Samuel Don Navé, Todd Ray Rhyne
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Patent number: 7397992Abstract: Disclosed are tubeless fiber optic cables having strength members, methods of making the cables, and methods for making strength members. Specifically, the concepts of the invention inhibit the distortion and/or influence the cross-sectional shape of the tubeless fiber optic cables due to torsional forces from the strength members. For instance, one tubeless fiber optic cable of the invention uses strength members with a dead-lay construction for inhibiting distortion of the same. Another tubeless fiber optic cable design uses strength members on opposite sides of the cavity where the torsional forces from the strength members are in opposite directions for influencing the cross-sectional shape of the same. Other aspects of the invention are directed to methods for making the tubeless fiber optic cables.Type: GrantFiled: April 30, 2007Date of Patent: July 8, 2008Assignee: Corning Cable Systems LLCInventors: Bradley Jerome Blazer, Rodney Maurice Burns, Julian Latelle Greenwood, III, Douglas Scott Hedrick, Kenneth Darrell Temple, Jr., Wilson Sidney Whisnant, III
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Patent number: 7397990Abstract: A cable (302) has (8) fibers (304) are encapsulated by a UV curable layer (306) having a diameter of approximately (1010) microns, and (16) outer fibers (316) arranged in a circular formation around the inner fibers (304). The optical fibers (304) are held in position by means of the UV curable layer (306) so that the UV curable material of the layer (306) does not penetrate into the gaps between the optical fibers (304) and the outermost optical fibers (304) are restrained by the layer from moving axially. It is found that such an arrangement provides surprisingly favorable bending properties, making the cable particularly suitable for installation in a tube by means of blowing.Type: GrantFiled: June 26, 2003Date of Patent: July 8, 2008Assignee: Emtelle (UK) LimitedInventors: George Henry Platt Brown, David John Stockton, Kevin Thomas Cockburn, Greig Iain McIlwraith
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Patent number: 7389039Abstract: A method of managing and playing a title of a medium, the medium playing a deleted video title set (VTS) even after finalization of recording of a medium. The medium includes a first area recording video title sets and a second area recording search information used to play a deleted video title set among video title sets that have been recorded to the first area before recording of the medium is finalized.Type: GrantFiled: February 17, 2004Date of Patent: June 17, 2008Assignee: Samsung Electronics Co., Ltd.Inventor: Sang-am Lee
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Publication number: 20080138020Abstract: A fiber optic cable assembly is provided. The cable assembly includes a housing, a plurality of furcation tubes, and a bundled cable. The housing has an opening at a first end and a plurality of channels at a second end. The furcation tubes are aligned with corresponding channels. One end of the bundled cable extends into an interior space of the housing through the opening. The bundled cable has a cable jacket and cable filaments. A first portion of the cable filaments extends beyond the end of the cable jacket in the interior space. A plurality of optic fibers is disposed in the bundled cable and the housing, and a molding compound is disposed around the furcation unit. Individual optic fibers are in individual furcation tubes and movable to slide longitudinally relative to the housing.Type: ApplicationFiled: August 14, 2007Publication date: June 12, 2008Inventors: Paul Robinson, Daniel Bagby, Terry Kleeberger, Anthony Thostenson, Bill Eliot, Douglas Harvey
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Patent number: 7362936Abstract: An optical harness assembly and method are provided. The optical harness assembly includes at least one optical harness cable having a termination end; at least one electrical connector having connector pins; and at least one active connector conversion unit coupled between the termination end of the optical harness cable and the electrical connector. A method for retrofitting an optical harness assembly into an existing platform is disclosed. The method includes removing a legacy wiring harness; installing an optical harness assembly having electrical connectors and an active connector conversion unit; and testing the compatibility of connector pins of the electrical connector to the active connector conversion unit. In another embodiment the method includes: identifying electrical signals present on each pin of each electrical connector presentation; programmatically adjusting an interface based on the identified electrical signals present; and mapping the electrical connector signals to digital signals.Type: GrantFiled: March 1, 2006Date of Patent: April 22, 2008Assignee: Defense Photonics Group, Inc.Inventors: Jason Blain Stark, Gadi Lenz, Bradley Scott Jackson
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Patent number: 7359583Abstract: Optical devices are disclosed, one example of which includes first and second polarization maintaining (“PM”) fibers. The first and second PM fibers in this example are disposed beside each other to form a grouping that includes a secondary axis defined by the first and second PM fibers. The first and second PM fibers are oriented such that a fast axis of the first PM fiber is non-parallel with respect to a fast axis of the second PM fiber. Finally, the optical device is configured so that each of the PM fibers maintains a distinct optical transmission path.Type: GrantFiled: August 2, 2004Date of Patent: April 15, 2008Assignee: Finisar CorporationInventors: Ping Xie, Yonglin Huang, Salvador P. Tiscareno
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Publication number: 20080069504Abstract: In an end surface closely arranged multicore optical fiber 200, at least two single-mode optical fibers 10 are, at one and the other ends of the individual single-mode optical fibers 10, closely arranged in parallel to each other and bound together, such that a center-center distance of adjacent single-mode optical fibers 10 is twice a core diameter of the single-mode optical fiber 10 or greater and 0.5 times a value obtained by subtracting the core diameter of the single-mode optical fiber from a core diameter of a multimode optical fiber to be connected or less, and that the remaining individual single-mode optical fibers 10 are individually independent from each other.Type: ApplicationFiled: September 14, 2007Publication date: March 20, 2008Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTDInventors: Takashi Hiraga, Ichiro Ueno, Noritaka Yamamoto, Toshiko Mizokuro, Nobutaka Tanigaki, Norio Tanaka, Kuniaki Aoki, Masutaka Koyano, Kunio Ikuma
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Patent number: 7346243Abstract: Fiber optic distribution cables and methods for manufacturing the same are disclosed. The methods present one or more optical fibers outward of the protective covering for distribution of the same toward the subscriber. In one method of making the fiber optic distribution cables, an indexing tube is provided for indexing a tether tube within the indexing tube for providing the distribution optical fiber with a suitable excess fiber length. In another method, a demarcation point is provided for inhibiting the movement (i.e., pistoning) of the distribution optical fiber into and out of the distribution cable. In still another method, one or more caps are provided for closing one or more the openings in the protective covering used for accessing the optical fibers within the fiber optic distribution cable. Additionally, other methods may include providing a fiber optic distribution cable having a dry construction and/or a non-round cross-section.Type: GrantFiled: May 11, 2006Date of Patent: March 18, 2008Assignee: Corning Cable Systems LLCInventors: Joseph T. Cody, Dennis M. Knecht, Christopher Paul Lewallen, James P. Luther
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Patent number: 7324730Abstract: A cable which includes conductor bundles prepared from at least one optical fiber positioned either centrally or helically about the center axis of the bundle, metallic conductors helically positioned around the bundles center axis, and a polymeric insulation material. A method of making a cable including forming a conductor bundle by placing helically positioned conductors and optical fibers about the periphery of a central optical fiber or metallic conductor, encasing the conductors, optical fibers, in a polymeric insulation material, and grouping the conductor bundles together.Type: GrantFiled: September 1, 2004Date of Patent: January 29, 2008Assignee: Schlumberger Technology CorporationInventors: Joseph Varkey, Ravicharan Mydur, Noor Sait, Willem Wijnberg, Sumitra Kunathikom, Monica Darpi
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Patent number: 7319802Abstract: A flexible innerduct structure is configured to contain a cable within a conduit. The innerduct structure includes a pair of adjacent strip-shaped layers of flexible material that are joined along their longitudinal edges to define a channel through which the cable can extend longitudinally through the innerduct structure between the layers. The adjacent layers have differing widths between their longitudinal edges, whereby the wider layer bulges away from the narrower layer to impart an open configuration to the channel. Other features of the innerduct structure relate to the material of which it is formed. Such features includes the structure of the material, such as a woven structure, and further include properties such as melting point, tensile strength, elongation, coefficient of friction, crimp resistance and compression recovery.Type: GrantFiled: February 6, 2007Date of Patent: January 15, 2008Assignee: Milliken & CompanyInventor: David D Morris
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Patent number: 7317863Abstract: The present disclosure relates to a telecommunications cable including a distribution cable and a tether that branches from the distribution cable at a mid-span breakout location. A flexible closure covers the mid-span breakout location. Within the closure, fibers are broken out from the distribution cable and spliced to fibers of the tether. The lengths of broken out fibers within the flexible closure are provided with sufficient excess fiber length to allow the closure to be readily bent/flexed in any direction without damaging the fibers.Type: GrantFiled: July 21, 2006Date of Patent: January 8, 2008Assignee: ADC Telecommunications, Inc.Inventors: Yu Lu, Keith Millea, Jeff Gniadek
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Patent number: 7302145Abstract: Self-healing cable apparatus and methods are disclosed. The cable has a central core surrounded by an adaptive cover that can extend over the entire length of the cable or just one or more portions of the cable. The adaptive cover includes a protective layer having an initial damage resistance, and a reactive layer. When the cable is subjected to a localized damaging force, the reactive layer responds by creating a corresponding localized self-healed region. The self-healed region provides the cable with enhanced damage resistance as compared to the cable's initial damage resistance. Embodiments of the invention utilize conventional epoxies or foaming materials in the reactive layer that are released to form the self-healed region when the damaging force reaches the reactive layer.Type: GrantFiled: February 27, 2006Date of Patent: November 27, 2007Assignee: University of Vermont and State Agricultural CollegeInventors: Dryver Huston, Brian Esser
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Patent number: 7289714Abstract: A telecommunications cable includes a distribution cable, a tether, and a tube. One end of a length of optical fiber optically couples to the distribution cable and the opposite end of the length of optical fiber optically couples to the tether cable. The tube is mounted over the length of optical fiber. The tube defines an opening adjacent one end of the tube. The tube includes fingers adjacent the opening having sufficient flexibility to enable the one end of the tube to wrap around buffer tubes of the distribution cable.Type: GrantFiled: September 26, 2006Date of Patent: October 30, 2007Assignee: ADC Telecommunication, Inc.Inventor: Dennis Ray Wells
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Patent number: 7280725Abstract: A furcation tube including a central channel for receiving a fiber optic drop cable in a first end and an upjacket in a second end to transition an optical fiber within the drop cable into the upjacket for termination. A method of transitioning an optical fiber from a drop cable to a smaller upjacket.Type: GrantFiled: June 15, 2004Date of Patent: October 9, 2007Assignee: ADC Telecommunications, Inc.Inventors: Troy Brown, Steven C. Zimmel, Justin R. Horton
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Patent number: 7277614Abstract: A tether assembly includes a tether cable containing optical fibers and adapted to be attached to a fiber optic distribution cable at a mid-span access location. A furcation at the end of the tether cable separates and transitions the optical fibers into furcation legs terminating in individual connector ports. Each connector port may be a receptacle for receiving a connector mounted upon one of the optical fibers and a mating connector of a drop cable, a plug mounted upon one of the optical fibers that is received within a plug alignment member operable to align the plug with a mating plug of a drop cable, or a connector that is routed to a receptacle disposed within an external wall of a network connection terminal from within the enclosure. The tether assembly provides a distribution cable assembly and method for mitigating a span length measurement difference in a pre-engineered communications network.Type: GrantFiled: December 3, 2004Date of Patent: October 2, 2007Assignee: Corning Cable Systems LLCInventors: Joseph T. Cody, Otto I. Szentesi, Martin J. Curran
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Patent number: 7272282Abstract: Fiber optic cables and assemblies useful for distribution of the optical fibers to a network are disclosed. The fiber optic cables include a first strength component and a second strength component with a cable jacket generally surrounding the first and second strength components. One or more compartments are defined between the first and second strength components for housing one or more optical fibers. The optical fibers of the fiber optic cable are easily accessible by the craft for distribution to the network, thereby allowing the construction of assemblies that are suitable for distribution of the optical fibers to the network.Type: GrantFiled: July 31, 2006Date of Patent: September 18, 2007Assignee: Corning Cable Systems. LLC.Inventors: David Alan Seddon, Warren W. McAlpine
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Patent number: 7269318Abstract: Herein described is a method and system for identifying buffer tubes in a cable by including at least one colored filling material within a transparent or translucent buffer tube.Type: GrantFiled: March 23, 2004Date of Patent: September 11, 2007Assignee: Superior Essex Communications, LPInventor: Thomas Christopher Cook
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Patent number: 7251411Abstract: The present disclosure relates to a telecommunications cable including a distribution cable and a tether that branches from the distribution cable at a mid-span breakout location. A flexible closure covers the mid-span breakout location. Within the closure, fibers are broken out from the distribution cable and spliced to fibers of the tether. The lengths of broken out fibers within the flexible closure are provided with sufficient excess fiber length to allow the closure to be readily bent/flexed in any direction without damaging the fibers.Type: GrantFiled: July 21, 2006Date of Patent: July 31, 2007Assignee: ADC Telecommunication, Inc.Inventors: Yu Lu, Keith Millea, Jeff Gniadek
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Patent number: 7239781Abstract: The present inventions relate generally to umbilicals comprising at least one inner tube and at least one composite fiber element to provide greater resistance to radial compressive forces. Such umbilicals may be used in subsea hydrocarbon production applications.Type: GrantFiled: November 8, 2005Date of Patent: July 3, 2007Assignee: Oceaneering International, Inc.Inventors: Andre Chartier, Paul Gahm
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Patent number: 7221832Abstract: A thermal protection device for a fiber optic cable includes a loop formed on the cable and a plurality of sub-units within the cable removed from an outer jacket. A circumferential cut is made through an outer jacket of each sub-unit. A tube is placed about the cut in each sub-unit. A carrier is positioned about each of the tubes and each sub-unit including a circumferential cut. A fiber optic system includes a thermal protection device for sub-units of a fiber optic cable within a frame. A method of providing thermal protection for a fiber optic cable. A kit for providing thermal protection to telecommunications cables.Type: GrantFiled: August 31, 2004Date of Patent: May 22, 2007Assignee: ADC Telecommunications, Inc.Inventor: Thomas Tinucci
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Patent number: 7221831Abstract: A multi-tube fiber optic cable maintains a plurality of fiber tubes, each fiber tube containing at least one optical fiber therein. The plurality of fiber tubes are disposed apart from a central axis of the cable. A plurality of strength members are disposed apart from a central axis of said cable. An outer jacket surrounds the plurality of fiber tubes and the plurality of strength members and is formed from a pressure extruded polymer. The plurality of fiber tubes and strength members are held in either one of an oscillated geometry or a helical geometry by the pressure extruded jacket.Type: GrantFiled: March 3, 2005Date of Patent: May 22, 2007Assignee: NexansInventors: David Keller, Randie Yoder
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Patent number: 7221833Abstract: Disclosed is an optical cable with a secondary sheath for surrounding and protecting a plurality of optical fiber units in which at least 1-core optical fiber is mounted in a buffer tube, wherein the secondary sheath is made of a mixture including 100 parts by weight of base resin selected from the group consisting of low density polyethylene, linear low density polyethylene, and their mixture; and 0.2 to 60 parts by weight of inorganic additive. The secondary sheath of this optical cable shows excellent cutting and tear characteristics and ensures easy contact and divergence.Type: GrantFiled: November 2, 2004Date of Patent: May 22, 2007Assignee: LG Cable, Ltd.Inventors: Do-Hyun Park, Gi-Joon Nam
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Patent number: 7212715Abstract: A cable element and a method of making the same, in which the cable element has a central strength member, a plurality of buffer tubes are disposed on the central strength member, each of the plurality of buffer tubes encloses at least one signal transmission element, and a layer of pressure sensitive adhesive is provided on the central strength member. The pressure sensitive adhesive is a repositionable adhesive and releasably couples the plurality of buffer tubes to the central strength member such that the plurality of buffer tubes can be coupled and uncoupled repeatedly from the central strength member.Type: GrantFiled: June 25, 2004Date of Patent: May 1, 2007Assignee: Draka Comteq B.V.Inventors: George Dallas, Benoit Rollet, Christophe Meisch, Serge Pouilly
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Patent number: 7194168Abstract: A tight buffer optical fiber ribbon is formed from a plurality of optical fibers, each of which has a glass core, a primary coating and a second tight buffer layer. The ribbon includes first and second stand off legs, each having an inner strength core and an outer tight buffer layer. The plurality of optical fibers are coupled to one another in a substantially sequential ribbon arrangement via their tight buffer layer. The first stand off leg is attached to the substantially sequential ribbon arrangement of the optical fibers at a first end, and the second stand off leg is attached to the substantially sequential ribbon arrangement of the optical fibers at a an opposite second end.Type: GrantFiled: March 3, 2005Date of Patent: March 20, 2007Assignee: NexansInventor: Jeff Rosenquist
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Patent number: 7189312Abstract: An earthing electrode assembly and method for providing a submerged electrical apparatus with an earth path, the electrode assembly having an earthing electrode, an attachment device for attaching the electrode assembly to a cable, and an insulated electrical connection for connecting the earthing electrode to the submerged electrical apparatus. The connection is formed to be of sufficient length for the submerged electrical apparatus to be protected from electrochemical effects resulting from operation of the earthing electrode.Type: GrantFiled: October 29, 2002Date of Patent: March 13, 2007Assignee: AlcatelInventors: Ian Gerard Watson, Philip Andrew Norman, David Lancelot Walters, Peter Worthington
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Patent number: 7171087Abstract: An optical fiber cable has an optical fiber core wire and a tension member. The tension member is formed of a glass fiber reinforced resin linear material with glass fibers and a matrix resin, and satisfies the following requirements: (1) (EfVf+EmVm)d2?8.3/n wherein Ef represents the modulus of elasticity of glass fibers, GPa; Vf represents the content of glass fibers, %/100; Em represents the modulus of elasticity of matrix resin, GPa; Vm represents the content of matrix resin, %/100; d represents the diameter of tension member, mm; and n represents the number of tension members used in optical fiber cable; (2) (Ef/Em)?22; (3) Vf=0.6 to 0.88; and (4) an elongation at break of glass fibers of not less than 5% and an elongation at break of matrix resin of not less than 5%.Type: GrantFiled: March 21, 2005Date of Patent: January 30, 2007Assignee: Hitachi Cable, Ltd.Inventor: Yoshihiro Takahashi
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Patent number: 7123801Abstract: Optical fiber cables with a central strength member encircled by a jacket having ducts which are disposed around the strength member and which receive one or more optical fibers with jacket material between the ducts and the outer surface of the jacket. The optical fibers are free to move in the ducts, and preferably, the optical fibers are tight buffered. Portions of the jacket intermediate the ducts connect to the strength member which resists longitudinal movement of the jacket relative to the core. However, the jacket can be separated from the core by manual pulling force after the jacket is axially and radially cut at a pair of diametrically opposite ducts. Preferably, the jacket has outer surface indicia showing the positions of the slots, and the cables can include water blocking materials.Type: GrantFiled: November 18, 2004Date of Patent: October 17, 2006Assignee: Prysmian Communications Cables and Systems USA, LLCInventor: Jon Fitz
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Patent number: 7054531Abstract: A unitized fiber optic cable 10 includes a plurality of unit cables 20, each of which also includes a plurality of tight buffered optical fibers 30. The unit cables 20 aid in segregating and identifying individual tight buffered optical fibers 30. Strength members, such as aramid fibers 14 can be located between the unit cables 20 and the outer cable jacket 12, instead of being located within the unit cables 20. Relatively thin unit jackets 22 can be made of a material that will not stick to the tight buffer or tight buffer layers 32 on the optical fibers 30, so aramid fibers 14 need not be located between the unit jacket 22 and the tight buffered optical fibers 30. The unit jacket 22 can be a highly filled polymer that can be the same polymer used in the tight buffer or tight buffer layer 32. The unit jacket 22 need not be a load bearing member.Type: GrantFiled: December 23, 2002Date of Patent: May 30, 2006Assignee: Corning Cable Systems LLCInventors: William C. Hurley, Martyn N. Easton
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Patent number: 7035510Abstract: A cable breakout assembly comprising: a cable furcation device joining a cable including an outer jacket and an inner optical fiber, to an upjacket. The upjacket includes an inner tube for receiving the optical fiber, a stranded strength member outside the inner tube, and an outer tube outside of the strength member. The cable furcation device includes a first end disposed around the end of the outer jacket of the cable. The second end has a projecting tube for receiving the outer tube of the upjacket, the first tube having an inner diameter receiving the inner tube and the optical fiber. The device has an outer crimp surface, and a crimp ring crimps the strength member to the crimp surface. A heat shrunk tube is positioned around a portion of the upjacket, the cable furcation device, and a portion of the cable.Type: GrantFiled: July 2, 2003Date of Patent: April 25, 2006Assignee: ADC Telecommunications, Inc.Inventors: Steven C. Zimmel, Michael J. Shorter
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Patent number: 7027696Abstract: A fiber optic buffer tube containing fiber optic ribbons centrally located within the buffer tube and a gel compound surrounding the fiber optic ribbons. Disposed within the gel compound, between the walls of the buffer tube and the fiber optic ribbons are gel swellable yarns and/or particles. The gel swellable yarns/particles volumetrically expand when in contact with the gel compound causing greater force to hold the gel compound in place, especially when the fiber optic buffer is heated. The gel swellable yarns/particles also provide greater surface area and help to prevent the fiber optic ribbons from coming into contact with the walls of the buffer tube, thereby preventing signal attenuation problems.Type: GrantFiled: July 1, 2004Date of Patent: April 11, 2006Assignee: AlcatelInventor: Nicholas V. Nechitailo
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Patent number: 6973244Abstract: The invention relates to a cable comprising at least two elongated elements chosen from a group consisting of steel tubes (1, 2), optical fibre cables (3), electrical cables (4), and combinations thereof, arranged side by side within a common outer cover (5) along the length of the line and where at least one of the elongated elements (1, 2) has a passive metal outer surface, said outer cover (5) allowing entrance of corrosive agent to the interstices between elements, characterized in that at least one of the elements (1,2) with passive metal outer surface is provided with an outer layer (1A, 2A) formed of a material with open structure for water passage and having controlled thickness.Type: GrantFiled: April 15, 2004Date of Patent: December 6, 2005Assignee: NexansInventor: Stian Karlsen
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Patent number: 6937802Abstract: A telecommunication cable includes a plurality of modules, each with a thin retaining sheath for clamping optical fibers together. Each retaining sheath contains plural respective modules and is mechanically coupled to the retaining sheaths of the respective modules to form supermodules that contact an outside jacket. The retaining sheath of a supermodule includes an identification color or line to distinguish the supermodules from each other.Type: GrantFiled: September 21, 2001Date of Patent: August 30, 2005Assignee: Sagem SAInventors: Patrick Jamet, Nathalie Lecourtier, Daniel Bernier
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Patent number: 6937801Abstract: A fiber optic cable is provided that includes a plurality of lengthwise extending, non-jacketed bundles of optical fibers and a cable jacket surrounding the bundles of optical fibers. Each bundle of optical fibers may include a binder, such as a binder thread, for maintaining the integrity of the bundle. The binder may include, for example, a binder thread formed of an air entangled, textured, continuous multi-filament thread. The fiber optic cable may also include a separation element for preventing adhesion between the bundles of optical fibers and the cable jacket without having to separately jacket each bundle of optical fibers.Type: GrantFiled: August 9, 2004Date of Patent: August 30, 2005Assignee: Corning Cable Systems LLCInventors: Warren W. McAlpine, William C. Hurley, Richard S. Wagman, James L. Baucom, Scott A. McDowell
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Patent number: 6931190Abstract: An optical fiber unit for air blown fiber installation, including an optical fiber wire; an inner coating layer formed on an outer periphery of the optical fiber wire with a modulus of elasticity ranging from 0.98 to 196 MPa; an outer coating layer formed on an outer periphery of the inner coating layer with a modulus of elasticity ranging from 196 to 1960 MPa; and a foamed plastic layer formed on an outer periphery of the outer coating layer.Type: GrantFiled: February 14, 2003Date of Patent: August 16, 2005Assignee: Fujikura Ltd.Inventors: Etsuo Ino, Tsuyoshi Shimomichi, Keiji Ohashi
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Patent number: 6928170Abstract: A wireless microphone having a split-band audio frequency companding system is disclosed. The companding system includes a compression circuit in which one amplification element is utilized in connection with a number of frequency bands. Each frequency band has a rectifier and filter element associated therewith. High-pass filter elements are utilized in the higher frequency bands of the compression and expander circuits to reduce the transfer of low-frequency signals to the rectifier elements that process the low-frequency signals, thereby reducing undesirable modulations of a variable resistance element associated therewith.Type: GrantFiled: November 2, 2000Date of Patent: August 9, 2005Assignee: Audio Technica, Inc.Inventor: Kelly Statham
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Patent number: 6922511Abstract: One embodiment is a fiber optic cable including at least one subunit, a tube, a plurality of strength members, and a cable jacket. The subunit includes a fiber optic ribbon and a sheath, wherein the sheath is tight-buffered about the fiber optic ribbon, thereby inhibiting buckling of the ribbon during temperature variations. The tube houses at least a portion of the at least one subunit to form a tube assembly. The plurality of strength members are disposed radially outward of the tube and are surrounded by the cable jacket. Other embodiments include a plurality of subunits in a stack with each subunit having a sheath for security purposes. Additionally, a tube assembly can have a fiber optic packing density of about 0.05 or greater.Type: GrantFiled: March 31, 2003Date of Patent: July 26, 2005Assignee: Corning Cable Systems LLCInventors: Brian K. Rhoney, Samuel D. Nave, James A. Register, III, William M. Hobbs, Jill D. McPeak, Roderick S. Bayliss, Jr.
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Patent number: 6915052Abstract: Covered optical fibers are provided comprising at least on optical fiber; and a buffer tube covering surrounding the optical fiber. The buffer tube covering is comprised of a blend of at least 40% by weight of a copolyether ester elastomer, at least 10% by weight of a rubbery modifier, and at least 10% by weight of an amorphous thermoplastic polymer, and has a melting point of at least 165° C. and a Trouser Tear Strength of less than 65 N/mm.Type: GrantFiled: February 27, 2004Date of Patent: July 5, 2005Assignee: E. I. du Pont de Nemours and CompanyInventor: Sonia Japon Boogh
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Patent number: 6909828Abstract: A cable breakout assembly comprising: a cable furcation device joining a cable including an outer jacket and an inner optical fiber, to an upjacket. The upjacket includes an inner tube for receiving the optical fiber, a stranded strength member outside the inner tube, and an outer tube outside of the strength member. The cable furcation device includes a first end disposed around the end of the outer jacket of the cable. The second end has a projecting tube for receiving the outer tube of the upjacket, the first tube having an inner diameter receiving the inner tube and the optical fiber. The device has an outer crimp surface, and a crimp ring crimps the strength member to the crimp surface. A heat shrunk tube is positioned around a portion of the upjacket, the cable furcation device, and a portion of the cable.Type: GrantFiled: September 14, 2004Date of Patent: June 21, 2005Assignee: ADC Telecommunications, Inc.Inventors: Steven C. Zimmel, Michael J. Shorter
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Patent number: 6901192Abstract: A nonmetallic, nonconductive strength member for use in a cable or as a component of a strength reinforcement system of a cable is provided. The strength member is constructed of low cost materials and includes multiple glass fibers coated with a coating composition. The strength member provides flexibility and high tensile strength. The strength member exhibits low smoke generation and low flammability properties. The coating composition includes at least a lubricant that imparts a substantially smooth surface and a low coefficient of friction to the glass fibers to help facilitate processing of the strength member(s) during cabling and stranding procedures. The coating composition also includes at least an adhesive component that helps to substantially adhere the glass fibers together and helps to form the glass fibers into the strength member. The strength member can be configured as a yarn or as a strand for incorporation within a cable and/or for arrangement with one or more cable components.Type: GrantFiled: November 18, 2002Date of Patent: May 31, 2005Assignee: Neptco IncorporatedInventor: Leslie Harrell Wells
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Patent number: 6870994Abstract: The manufacturing apparatus for optical fiber cord is provided with an extrusion machine, a cooling chamber, an intermediate pulling device, a heating chamber, a final pulling device, and a winding machine wherein the machines, the devices and the chambers are disposed in this order. One or more optical fiber cores and one or more reinforcing fibers are sheathed with thermoplastic resin by the extrusion machine. The thermoplastic resin is solidified by cooling so as to be a resin sheath. The sheathed fibers are annealed by the heating chamber so that its residual stress is relieved.Type: GrantFiled: July 31, 2002Date of Patent: March 22, 2005Assignee: Fujikura Ltd.Inventors: Kazunaga Kobayashi, Masahiro Kusakari, Takeshi Honjyou, Keiji Ohashi