Loose Tube Type Patents (Class 385/109)
  • Patent number: 8938144
    Abstract: An optical fiber cable including, in a radial direction outward, a central strength member, a first layer of loose buffer tubes stranded around the central strength member, at least one of the loose buffer tubes of the first layer containing at least one light waveguide, an intermediate layer, a second layer of loose buffer tubes stranded around the intermediate layer, at least one of the loose buffer tubes of the second layer containing at least one light waveguide, and a jacket surrounding the second layer of loose buffer tubes, wherein the intermediate layer is formed of a material having a high coefficient of friction.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: January 20, 2015
    Assignee: Draka Comteq B.V.
    Inventors: Jan Hennink, Jean-Pierre Bonicel, Pascal Maria Willem Bindels
  • Patent number: 8929702
    Abstract: 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: Grant
    Filed: May 21, 2007
    Date of Patent: January 6, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Joseph Varkey, Vladimir Hernandez-Solis, Marwan Moufarrej
  • Publication number: 20150003795
    Abstract: A fiber optic assembly includes a buffer tube forming an elongate passage and a plurality of optical fibers positioned therein. The buffer tube includes at least one layer of a composite material that includes a base material and a filler material blended therein. Particles of the filler material have an acicular structure, having a longest dimension that is on average at least ten times a narrowest dimension of the particles. Further the buffer tube has kink resistance.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 1, 2015
    Inventors: Adra Smith Baca, Anne Germaine Bringuier, Christopher Mark Quinn, Lori Ann Seeley, Brandon Robert Williamson
  • Patent number: 8923675
    Abstract: An optical communication cable is provided. The cable includes a core element located in a cable jacket. The core element includes a buffer tube having an outer surface, an inner surface and a channel defined by the inner surface of the first tube. The core element includes an optical fiber located within the channel of the buffer tube and a color layer formed from a surface-deposited colorant material applied to the outer surface of the buffer tube.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: December 30, 2014
    Assignee: Corning Optical Communications LLC
    Inventors: Adra Smith Baca, Dana Craig Bookbinder, Timothy Leonard Hunt, Michael Anthony Lockee, Eric John Mozdy
  • Patent number: 8923676
    Abstract: An armored cable having a polymer covering where the bond between the armor and the covering is controlled by introducing particulate matter at the interface of the armor and covering. A filler material is applied to the exterior surfaces of the cable strength elements in order to inhibit the formation of voids in the polymer covering that would otherwise promote water migration along the cable.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: December 30, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Bradley J. Blazer, Jason C. Lail
  • Patent number: 8913864
    Abstract: An apparatus for connecting buffer tubes including a first block, a second block, and a fastener for assembling said first and second blocks. The blocks contain a pair of tube grooves and a cavity and a and a hole leading into the cavity. A sealant is then inserted into the cavities and allowed to cure.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: December 16, 2014
    Assignee: AFL Telecommunications LLC
    Inventor: David Reeve
  • Patent number: 8909014
    Abstract: A fiber optic cable includes a cable jacket and a core. The cable jacket is tubular, having exterior and interior surfaces, and is formed mostly from a first polymeric material. The jacket includes access features formed from a second polymeric material at least partially embedded in the first polymeric material and extending lengthwise along the jacket. Two of the access features are spaced apart from one another with a section of the jacket formed from the first polymeric material extending laterally therebetween, such that the section may be peeled apart from the rest of the cable lengthwise along the jacket by separation of the jacket about the access features. The core has an outermost surface and includes optical fibers and a strength member. The outermost surface of the core is at least partially bonded to the interior surface of the jacket, which enhances coupling between the jacket and core.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: December 9, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Michael J. Gimblet, Julian L. Greenwood, III
  • Patent number: 8909015
    Abstract: Disclosed is a composition for a high strength loose tube type fiber optic cable with excellent flexibility and excellent impact resistance, which includes a polypropylene-polyethylene copolymer having a melt flow index (MFI) of 1.1 g/10 minutes to 3.0 g/10 minutes at 230° C. and a flexural modulus of 10,000 to 23,000 kg/cm2. A fiber optic cable including a loose tube formed with the composition for a high strength loose tube type fiber optic cable has excellent flexibility and impact resistance as well as excellent appearance.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: December 9, 2014
    Assignee: LS Cable & System Ltd.
    Inventors: Jeong-Eun Lim, Yu-Hyoung Lee, Gi-Joon Nam
  • Patent number: 8897613
    Abstract: An example fiber optic cable includes an outer jacket having an elongated transverse cross-sectional profile defining a major axis and a minor axis. The transverse cross-sectional profile has a maximum width that extends along the major axis and a maximum thickness that extends along the minor axis. The maximum width of the transverse cross-sectional profile is longer than the maximum thickness of the transverse cross-sectional profile. The outer jacket also defines first and second separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The second passage has a transverse cross-sectional profile that is elongated in an orientation extending along the major axis of the outer jacket. The fiber optic cable also includes a plurality of optical fibers positioned within the first passage a tensile strength member positioned within the second passage.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: November 25, 2014
    Assignee: ADC Telecommunications, Inc.
    Inventor: Wayne M. Kachmar
  • Patent number: 8891923
    Abstract: The present invention provides optical-fiber communication cables with an improved water-blocking element that reduces or eliminates microbending caused by the water-swellable particulate powders by employing such water-swellable powders in conjunction with a smooth but perforated compression-resistant carrier tape. The water-blocking element is deployed within optical-fiber buffer tubes to water-block the buffer tubes and to minimize microbending that can occur when water-swellable particulate powders press against optical fibers.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: November 18, 2014
    Assignee: Draka Comteq, B.V.
    Inventor: Don Parris
  • Patent number: 8873913
    Abstract: A fiber optic cable comprises a jacket defining an outer peripheral surface and a radial thickness terminating at an inner periphery defining a surface, a multiplicity of optical fibers which are enclosed by and extend longitudinally through the jacket within the volume defined by the inner periphery of the jacket, and a plurality of plugs longitudinally spaced within the jacket, where each of the plugs envelops the optical fibers along a fixed longitudinal extent while being closely adjacent he surface defined by the inner periphery of the jacket. The system may further comprise the plugs being of a silicone-based material, and absorbent material disposed within the jacket between the plugs.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 28, 2014
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: David Zhi Chen, George N. Bell, Patrick B. Anderson
  • Patent number: 8842956
    Abstract: A non-kink, non-hockling optical cable comprising an optical fiber capable of propagating light along its longitudinal axis. A buffer layer made of a soft plastic material surrounds the silica core and cladding, and a supplemental layer surrounds the buffer layer. The supplemental layer consists essentially of a liquid crystal polymer (LCP) material to enhance the tensile strength of the optical fiber. Finally, an encasing polymer layer with a breaking strain greater than 30%, surrounds the supplemental layer, to increase the flexibility of the optical cable.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: September 23, 2014
    Assignee: Linden Photonics, Inc.
    Inventors: Stephen M. O'Riorden, Amaresh Mahapatra
  • Publication number: 20140254996
    Abstract: An optical fiber is disclosed which includes a protective outer jacket. The outer protective jacket is grooved to include one or more peripheral grooves formed into the jacket. In operation of a laser device, laser energy passes through the optical fiber to the distal tip of the optical fiber. As the distal tip erodes, the outer protective jacket also erodes in a controlled fashion such that portions of the outer jacket flake off as the fiber tip erodes to the position of the peripheral grooves formed in the outer jacket rather than in a random fashion.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: LUMENIS LTD.
    Inventor: Arkady KHACHATUROV
  • Publication number: 20140248025
    Abstract: There are provided optical fiber configurations that provide for the delivery of laser energy, and in particular, the transmission and delivery of high power laser energy over great distances. These configurations further are hardened to protect the optical fibers from the stresses and conditions of an intended application. The configurations provide means for determining the additional fiber length (AFL) need to obtain the benefits of such additional fiber, while avoiding bending losses.
    Type: Application
    Filed: October 18, 2013
    Publication date: September 4, 2014
    Applicant: FORO ENERGY, INC.
    Inventors: Charles C. Rinzler, Mark S. Zediker
  • Patent number: 8814446
    Abstract: The invention relates to a splice protection device for spliced optical fibers and to a method particularly for providing an access point to an optical fiber cable in a dwelling unit of a multi dwelling unit. To facilitate mounting of a splice protection device, the splice protection device according to the invention comprises a first and a second tube, the second tube being arranged concentrically and slidable within the first tube, the first and second tubes being adapted to receive at least one spliced fiber. The present invention furthermore relates to a method for providing an access point to a provider optical cable in a dwelling unit of a multi-dwelling unit.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: August 26, 2014
    Assignee: Tyco Electronics Raychem BVBA
    Inventors: Mohamed Labraymi, Sam Leeman, Kristof Vastmans, Bart Mattie Claessens, Kathleen Bellekens
  • Publication number: 20140233899
    Abstract: A fiber optic cable comprises a plurality of elongated optical fiber units, each having an outer jacket containing multiple optical fibers. The optical fiber units are interconnected at intermittent bonding locations along an axial length of said trunk cable to form a sheathless bundle. The absence of a sheath makes the trunk cable thinner and lighter than typical trunk cable. In addition, each unit can serve as a horizontal cable at a selected branching location.
    Type: Application
    Filed: September 21, 2012
    Publication date: August 21, 2014
    Applicant: AFL Telecommunications LLC
    Inventors: Matsuhiro Miyamoto, Yoshio Hashimoto, Joseph Cignarale
  • Patent number: 8805143
    Abstract: Disclosed is a reduced-diameter optical-fiber cable that possesses a high fiber count and a high cable fiber density.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: August 12, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Olivier Tatat, Jean-Marc Testu
  • Patent number: 8805142
    Abstract: Cables have reduced freespace, reduced tube diameters, and reduced strength member diameters. The cables are designed to pass robustness testing such as GR-20 while using smaller amounts of raw materials to produce.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: August 12, 2014
    Assignee: Corning Optical Communications LLC
    Inventors: Scott Allen McDowell, Julian Latelle Greenwood, III, Reginald Roberts, David Alan Seddon
  • Patent number: 8798418
    Abstract: An optical cable includes a buffer tube housing at least one optical fiber, a sheath surrounding such buffer tube and at least one longitudinal strength member embedded in the sheath, in which at least one separation element is provided between a portion of the outer surface of the buffer tube and the inner surface of the sheath, laying in an axial plane not containing the at least one strength member.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: August 5, 2014
    Assignee: Prysmian S.p.A.
    Inventors: Martin Davies, Simon James Frampton, Roger Pike, Ralph Sutehall
  • Patent number: 8798416
    Abstract: The present disclosure relates to a telecommunications cable having a layer constructed to resist post-extrusion shrinkage. The layer includes a plurality of discrete shrinkage-reduction members embedded within a base material. The shrinkage-reduction members can be made of a liquid crystal polymer. The disclosure also relates to a method for manufacturing telecommunications cables having layers adapted to resist post-extrusion shrinkage.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: August 5, 2014
    Assignee: ADC Telecommunications, Inc.
    Inventor: Wayne M. Kachmar
  • Publication number: 20140199036
    Abstract: Micromodule subunit cables are constructed to allow for ease of identification between optical fibers in differing groups of optical fibers. In one cable, a first group of fibers is located within a first subunit while a second group of fibers is located within a second subunit, both subunits being enclosed in a cable jacket.
    Type: Application
    Filed: March 18, 2014
    Publication date: July 17, 2014
    Applicant: Corning Optical Communications LLC
    Inventors: William Carl Hurley, Samuel Don Navé
  • Patent number: 8781277
    Abstract: An optical fiber cable comprising a polymeric jacket and at least one elongated buffer tube having a substantially circular cross-section and at least one optical fiber disposed within the at least one buffer tube. The optical fiber cable further comprises at least one dummy rod having a substantially non-circular cross-section, wherein the cross-sectional area of each dummy rod is at least 10% less than the cross-sectional area of the at least one elongated buffer tube along a majority of the length of the at least one dummy rod.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: July 15, 2014
    Assignee: Prysmian S.p.A.
    Inventors: Ben Wells, Glenn Falk
  • Patent number: 8768126
    Abstract: An underwater optical fiber cable includes two end portions, an extruded metal tube, at least one optical fiber and a polymeric sheath surrounding the extruded metal tube. The at least one optical fiber is housed in loose configuration in the extruded metal tube. The cable includes a controlled cathodic protection system connected to one of the end portions of the underwater cable and includes an anode bed arranged outside the underwater cable and an electric connection connecting the anode bed to the extruded metal tube of the underwater cable at one of the end portions of the underwater cable.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: July 1, 2014
    Assignee: Prysmian S.p.A.
    Inventors: Pietro Anelli, Vincenzo Crisci, Giovanni Pozzati, Rodolfo Sica
  • Publication number: 20140178019
    Abstract: In an optical cable 1, the ratio of the inner diameter ID to the outer diameter OD of a tube 20 is 0.5 or less, and thus the tube 20 has a comparatively thick wall. Consequently, even when the optical cable 1 is bent to a small bend radius of, for example, approximately 2 mm, a kink in a portion of the tube 20 corresponding to the inner side of the bending is suppressed. As a result, damage to a coated optical fiber 10 or an increase in transmission loss arising from the occurrence of a kink in the tube 20 is suppressed.
    Type: Application
    Filed: December 27, 2012
    Publication date: June 26, 2014
    Inventors: Itaru Sakabe, Yuya Homma, Tomoyuki Hattori, Kazuyuki Sohma
  • Patent number: 8750661
    Abstract: A fiber optic cable includes a tube formed from a flame-retardant material, an optical fiber disposed in a cavity of the tube, and powder comprising flame-retardant particles. At least a portion of the powder is mechanically attached to a surface of the cavity, where the mechanical attachment of the powder allows a portion of flame-retardant particles of the powder to protrude beyond the surface and not be completely embedded therein.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: June 10, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Anne Germaine Bringuier, Rodney Maurice Burns, John Arthur Rowe, Catharina Lemckert Tedder, Brian Smith Witz
  • Patent number: 8750669
    Abstract: A rack cabling system including a rack having mounted thereon a first hardware component and a patch panel housing mounted on the rack adjacent the first hardware component. The patch panel housing populates no more than a three rack unit (RU space), the patch panel housing including a first end having cable pathway openings and a second end having connector elements mounted therein. The patch panel may have a first cable pathway opening located adjacent the first side of the housing and defining a primary position and a first connector element mounted on the second end and the first connector element having a first position corresponding to the primary position of the first cable pathway opening. Cable harnesses are routed with less than three bends of the cables between the first hardware component and the patch panel housing, so that the first cable harness is terminated at the first connector element in the first position.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: June 10, 2014
    Assignee: Methode Electronics Inc.
    Inventors: Michael R. Carter, David E. Hildreth, Robert C. Neumann, Tyler M. Miller
  • Publication number: 20140133813
    Abstract: A manufacturing line includes an extruder and a dynamic caterpuller system located after the extruder along the manufacturing line. During manufacturing, a fiber optic assembly is produced, where the fiber optic assembly includes a tube containing at least on optical fiber. The tube is extruded via the extruder and loaded via the dynamic caterpuller, which includes a closed pipe through which passes a liquid and the fiber optic assembly. The flow rate of the liquid is different than the speed of the fiber optic assembly through the pipe such that drag is imparted on the fiber optic assembly by the liquid.
    Type: Application
    Filed: March 8, 2013
    Publication date: May 15, 2014
    Inventor: Waldemar Stöcklein
  • Patent number: 8724947
    Abstract: Cables have armor including a polymer, the armor having an armor profile that resembles conventional metal armored cable. The armor provides additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein. The armored cables recover substantially from deformation caused by crush loads. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: May 13, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Gregory Blake Bohler, Julian Latelle Greenwood, III, Keith Aaron Greer, Wesley Brian Nicholson, James Arthur Register, III, Kimberly Dawn Slan
  • Patent number: 8718427
    Abstract: A loose tube optical fiber cable includes at least one cable unit. Each cable unit includes a plurality of loose, non-buffered optical fibers, a strength yarn at least partially surrounding the non-buffered optical fibers, and a jacket surrounding the strength yarn and the non-buffered optical fibers.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: May 6, 2014
    Assignee: CommScope, Inc. of North Carolina
    Inventors: Kevin Paschal, Nathan Hatch
  • Patent number: 8718428
    Abstract: Micromodule subunit cables are constructed to allow for ease of identification between optical fibers in differing groups of optical fibers. In one cable, a first group of fibers is located within a first subunit while a second group of fibers is located within a second subunit, both subunits being enclosed in a cable jacket.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 6, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: William C. Hurley, Samuel D. Navé
  • Publication number: 20140119699
    Abstract: An optical fiber cable includes at least one optical fiber element and a tight buffer coating on the optical fiber element, where the tight buffer coating on the optical fiber element includes a plurality of alternating splines and grooves facing outwardly towards the outer circumference of the tight buffer coating. Additionally, an optical fiber cable can have at least one optical fiber element and at least one buffer tube surrounding the optical fiber element, where the buffer tube around the optical fiber element includes a plurality of alternating splines and grooves facing outwardly towards the outer circumference of the buffer tube.
    Type: Application
    Filed: October 25, 2012
    Publication date: May 1, 2014
    Applicant: NEXANS
    Inventors: David Keller, Randie Yoder, Chris Raynor, Terry Gooch, Greg Heffner, Joshua Keller, Mike Good
  • Patent number: 8699839
    Abstract: An earth cable adapted for being laid underground includes at least one optical fiber, a thermally conducting polymeric layer surrounding the at least one optical fiber, and copper conductors arranged in a radially-external position with respect to the thermally conducting polymeric layer.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: April 15, 2014
    Assignee: Prysmian S.p.A.
    Inventors: Josep Maria Batlle i Ferrer, Josep Maria Martin-Regalado, Matias Campillo
  • Patent number: 8693831
    Abstract: A cable includes a channel with an aspect ratio that houses optical fibers therein. The cable includes first and second stranded conductors on opposing sides of the channel. The channel is arranged with respect to the stranded conductors so that the fibers assume low strain positions in the channel when the cable is bent.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: April 8, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: James A. Register, III, Reginald Roberts, Randall D. Tuttle
  • Patent number: 8687930
    Abstract: Cables have reduced freespace, reduced tube diameters, and reduced strength member diameters. The cables are designed to pass robustness testing such as GR-20 while using smaller amounts of raw materials to produce.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: April 1, 2014
    Assignee: Corning Cable Systems LLC
    Inventors: Scott A. McDowell, Julian L. Greenwood, III, Reginald Roberts, David A. Seddon
  • Patent number: 8682124
    Abstract: A fiber optic cable includes a jacket, strength members, armor, and a tear feature. The jacket is formed from a first polymeric material and defines an exterior of the cable. The jacket further forms an interior cavity configured to support an optical fiber. The strength members are each surrounded by the jacket, with the cavity separating the strength members from one another. The armor extends above the cavity and at least partially above the strength members, and has greater tensile strength than the first polymeric material. The tear feature is located beneath the armor and is formed from a second polymeric material co-extrudable with the first polymeric material. The tear feature forms a discontinuity of material within the jacket. At least one of the second polymeric material and the interface between the first and second polymeric materials yields at a lesser tearing force than the first polymeric material.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: March 25, 2014
    Assignee: Corning Cable Systems LLC
    Inventor: Eric R. Logan
  • Publication number: 20140079361
    Abstract: An optical-fiber-cable structure includes an optical fiber surrounded by a protective polymeric tube. A water-blocking element is positioned between the optical fiber and the protective tube. The water-blocking element includes water-swellable particulate powder thermally bonded to a fibrous carrier element.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 20, 2014
    Applicant: DRAKA COMTEQ, B.V.
    Inventor: William Mark Smartt
  • Patent number: 8676011
    Abstract: A cable can inhibit water that may inadvertently enter the cable from flowing lengthwise within the cable. The cable can include an outer jacket and at least one optical fiber disposed within the outer jacket. Water blocking barriers can be disposed at different longitudinal locations along the cable, and each water blocking barrier can provide a seal. Each barrier can include a polymer or a cured material and at least one derivative of at least one initiator that induces a reaction with the polymer or the cured material. The at least one initiator can include at least one of a photoinitiator or a thermal initiator.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: March 18, 2014
    Assignee: Superior Essex International LP
    Inventors: Christopher W. McNutt, James J. Puzan
  • Publication number: 20140064669
    Abstract: An optical fiber cable includes an optical fiber; a sheet of reinforcing tape rolled around a majority of an annular sidewall of the optical fiber; and a jacket surrounding the rolled sheet of reinforcing tape. The sheet has parallel longitudinal edges that are circumferentially spaced from each other to form a longitudinal slit along a length of the sheet of reinforcing tape. The reinforcing tape is formed of a polymeric material having uni-directionally oriented molecules along the length of the sheet. The jacket is heat-bonded to the sheet of reinforcing tape.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 6, 2014
    Applicant: ADC Telecommunications, Inc.
    Inventor: Wayne M. Kachmar
  • Patent number: 8660394
    Abstract: An optical fiber cable includes at least one buffer tube that includes a plurality of water-blocking plugs and an optical fiber. The water-blocking plugs can be spaced along the buffer tubes, substantially filling the cross-sectional space within the buffer tube not already filled by the optical fiber. The water-blocking plugs can provide a stronger bond between the optical fibers and the inner tube. This is reflected by a high normalized pullout force for the optical fiber, such as, above 5.0 N/m. Yet, the resulting fiber optic cable does not suffer from problems associated with a higher pullout force, such as attenuation.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: February 25, 2014
    Assignee: Prysmian Communications Cables and Systems USA, LLC
    Inventors: Ben Wells, John Sach, Martin Hanchard, Grant Davidson
  • Publication number: 20140037256
    Abstract: A breakout cable includes a polymer jacket and a plurality of micromodules enclosed within the jacket. Each micromodule has a plurality of bend resistant optical fibers and a polymer sheath comprising PVC surrounding the bend resistant optical fibers. Each of the plurality of bend resistant optical fibers is a multimode optical fiber including a glass cladding region surrounding and directly adjacent to a glass core region. The core region is a graded-index glass core region, where the refractive index of the core region has a profile having a parabolic or substantially curved shape. The cladding includes a first annular portion having a lesser refractive index relative to a second annular portion of the cladding. The first annular portion is interior to the second annular portion. The cladding is surrounded by a low modulus primary coating and a high modulus secondary coating.
    Type: Application
    Filed: October 10, 2013
    Publication date: February 6, 2014
    Applicant: Corning Cable Systems LLC
    Inventors: Craig Miller Conrad, William Carl Hurley, David Henry Smith
  • Patent number: 8639075
    Abstract: A communication cable can comprise optical fibers protected by an armor, such as a corrugated metallic tube. An outer jacket can cover the armor to provide environmental protection. A net located between the outer jacket and the armor can comprise openings, with the outer jacket extending into the openings, towards the armor. The net can be wrapped, formed, or woven around the armor, for example. The net can aid a craftsperson in separating the outer jacket from the corrugated metal tube, for example in connection with servicing the cable. The openings can control coupling between the outer jacket and the armor, for example providing a desired level of friction, bonding, adhesion, adherence, fusion, and/or contact between the outer jacket and the armor.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: January 28, 2014
    Assignee: Superior Essex Communications LP
    Inventor: Julie Anne Burnett
  • Publication number: 20140023330
    Abstract: A fiber optic cable includes: a plurality of optical fibers, the fibers divided into a plurality of fiber optic subunits, each of the subunits defining generally a circle having a first diameter; at least one elongate filler element, the filler element comprising a cellulosic material, wherein in end view the filler element defines generally a circle having a second diameter that is substantially the same as the first diameter; and an outer jacket surrounding the optical fiber subunits and the filler element, wherein the total number of fiber optic subunits and fillers elements is at least four. In this configuration, the cable can pass typical flame testing while being manufactured at a lower cost than current cable.
    Type: Application
    Filed: July 17, 2012
    Publication date: January 23, 2014
    Inventor: Douglas Blew
  • Patent number: 8625944
    Abstract: Disclosed is a low-shrink buffer tube having a reduced diameter. The buffer tube provides adequate crush resistance and is suitable for deployments requiring mid-span access.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: January 7, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Don Parris, Patrick King Strong, Denise Matthews, Jeffrey Scott Barker
  • Patent number: 8625945
    Abstract: Disclosed is a low-shrink buffer tube having a reduced diameter. The buffer tube provides adequate crush resistance and is suitable for deployments requiring mid-span access.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: January 7, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Don Parris, Patrick King Strong, Denise Matthews, Jeffrey Scott Barker
  • Patent number: 8625947
    Abstract: The present invention relates to flame-retardant fiber optic cables. The fiber optic cables include reinforcing materials that generate low smoke levels and exhibit improved performance during burn testing. The fiber optic cables are capable of meeting burn testing requirements without employing expensive, high-performance cable jacketing and buffering compounds.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: January 7, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Raymond G. Lovie, Brian G. Risch
  • Patent number: 8611713
    Abstract: An optical cable includes an optical fiber, a primary coating coated on the optical fiber, and an outer coating coated on the primary coating. The optical cable is spiral, and can be compressed or stretched. The outer coating comprises about 40 to 70 weight percent of caoutchouc, about 20 to 50 weight percent of neoprene, about 0 to 6 weight percent of magnesium oxide, about 0 to 6 weight percent of zinc oxide, and about 0 to 6 weight percent of vulcanization accelerator.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: December 17, 2013
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: I-Thun Lin
  • Patent number: 8582942
    Abstract: A fiber optic cable can comprise technology for mitigating stress on optical fibers of the cable. The technology can protect the optical fibers from compression, such as stemming from installation, deployment, or handling. The technology can compensate for thermally induced expansion and contraction of cable elements having differing thermal expansion characteristics, arising when the cable is subjected to temperature variations. The cable can comprise a central strength member onto which an elastomeric material, such as silicone, has been applied. The elastomeric material can protect optical fibers that are located between the central strength member and an outside jacket.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: November 12, 2013
    Assignee: Superior Essex Communications LP
    Inventor: Julie Anne Burnett
  • Patent number: 8577196
    Abstract: A communication cable can comprise optical fibers protected by an armor, such as a corrugated metallic tube. An outer jacket can cover the armor to provide environmental protection. A tape located between the outer jacket and the armor can comprise holes, with the outer jacket extending into the holes, towards the armor. The tape can be wrapped around the armor to form a tube, for example. The holes can control coupling between the outer jacket and the armor, for example providing a desired level of friction, bonding, adhesion, adherence, fusion, and/or contact between the outer jacket and the armor.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: November 5, 2013
    Assignee: Superior Essex Communications LP
    Inventor: Christopher W. McNutt
  • Patent number: 8577197
    Abstract: An optical unit is comprised of a plurality of optical base fibers twisted together without any member serving as a center of twisting so that each optical base fiber comes in contact with adjacent optical base fibers along the whole length, each of the optical base fibers including an optical fiber and a sleeve consisting essentially of silicone, a filler having the plurality of optical base fibers embedded therein, the filler consisting essentially of silicone, and a sheath covering the filler and the plurality of optical base fibers embedded in the filler.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: November 5, 2013
    Assignee: Fujikura Ltd.
    Inventors: Yukiko Sato, Naoki Okada
  • Publication number: 20130287350
    Abstract: A fiber optic cable includes a tube formed from a flame-retardant material, an optical fiber disposed in a cavity of the tube, and powder comprising flame-retardant particles. At least a portion of the powder is mechanically attached to a surface of the cavity, where the mechanical attachment of the powder allows a portion of flame-retardant particles of the powder to protrude beyond the surface and not be completely embedded therein.
    Type: Application
    Filed: June 21, 2013
    Publication date: October 31, 2013
    Inventors: Anne Germaine Bringuier, Rodney Maurice Bums, John Arthur Rowe, Catharina Lemckert Tedder, Brian Smith Witz