Patents by Inventor Eric R. Logan

Eric R. Logan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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
  • Patent number: 8565565
    Abstract: Fiber optic assemblies include subunit cables wrapped in binders. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. SZ stranding of the subunit cables allows ease of access to the individual cables during installation.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: October 22, 2013
    Assignee: Corning Cable Systems LLC
    Inventors: Louis A. Barrett, Gerry J. Harvey, Harold E. Hudson, II, Eric R. Logan
  • Patent number: 8462324
    Abstract: A system for monitoring an optical cable includes a cable having monitor fibers solely for monitoring cable status. The monitor fibers may be fibers selected from optical fibers having a higher mechanical sensitivity to mechanical stresses than other fibers in the cable, which may attenuate earlier than the other fibers in the event of cable degradation. The monitor fibers may be in communication with a transmitter and receiver, for transmitting and receiving a monitor signal. The receiver may be in communication with an alarm, the alarm being operative to send an alert signal when an increased attenuation is detected from the monitor signal, the increased attenuation being indicative of the status of the optical cable.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: June 11, 2013
    Assignee: Corning Cable Systems LLC
    Inventors: Eric R. Logan, Kevin B. Sparks
  • Publication number: 20130094821
    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: Application
    Filed: April 12, 2012
    Publication date: April 18, 2013
    Inventor: Eric R. Logan
  • Patent number: 8380029
    Abstract: Fiber optic cable furcation methods and assemblies are disclosed, wherein the method includes removing an end portion of the cable outer jacket from the fiber optic cable to expose end portions of the micromodules contained within. The method also includes helically stranding the exposed micromodule end portions to form a stranded section having a stranded configuration that includes at least three turns and that substantially immobilizes the optical fibers within their respective micromodules. The method also includes arranging a maintaining member on at least a portion of the stranded section to maintain the stranded configuration.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: February 19, 2013
    Assignee: Corning Cable Systems LLC
    Inventors: Timothy S. Cline, William C. Hurley, Eric R. Logan
  • Publication number: 20120120389
    Abstract: A system for monitoring an optical cable includes a cable having monitor fibers solely for monitoring cable status. The monitor fibers may be fibers selected from optical fibers having a higher mechanical sensitivity to mechanical stresses than other fibers in the cable, which may attenuate earlier than the other fibers in the event of cable degradation. The monitor fibers may be in communication with a transmitter and receiver, for transmitting and receiving a monitor signal. The receiver may be in communication with an alarm, the alarm being operative to send an alert signal when an increased attenuation is detected from the monitor signal, the increased attenuation being indicative of the status of the optical cable.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 17, 2012
    Inventors: Eric R. Logan, Kevin B. Sparks
  • Publication number: 20110317968
    Abstract: Fiber optic cable furcation methods and assemblies are disclosed, wherein the method includes removing an end portion of the cable outer jacket from the fiber optic cable to expose end portions of the micromodules contained within. The method also includes helically stranding the exposed micromodule end portions to form a stranded section having a stranded configuration that includes at least three turns and that substantially immobilizes the optical fibers within their respective micromodules. The method also includes arranging a maintaining member on at least a portion of the stranded section to maintain the stranded configuration.
    Type: Application
    Filed: June 29, 2010
    Publication date: December 29, 2011
    Inventors: Timothy S. Cline, William C. Hurley, Eric R. Logan
  • Publication number: 20110211793
    Abstract: Fiber optic assemblies include subunit cables wrapped in binders. The assemblies have small cross sections and low bend radii while maintaining acceptable attenuation losses. SZ stranding of the subunit cables allows ease of access to the individual cables during installation.
    Type: Application
    Filed: April 6, 2011
    Publication date: September 1, 2011
    Inventors: Louis A. Barrett, Gerry J. Harvey, Harold E. Hudson, II, Eric R. Logan
  • Publication number: 20110200291
    Abstract: A ruggedized cable has an inner and an outer jacket. The cable also includes two layers of aramid strength elements for tensile strength. The cable can be pulled through various environments due to the jacketing and strength elements. The outer jacket and strength elements can be stripped away at a transition point, and secured at an entry point of a housing of an FDT, ONT, etc. The remaining inner cable element is then routed through the hardware housing and terminated.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 18, 2011
    Inventors: Eric R. Logan, Michael H. Rasmussen, Todd R. Rhyne
  • Patent number: 7409127
    Abstract: 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: Grant
    Filed: September 28, 2007
    Date of Patent: August 5, 2008
    Assignee: Corning Cable Systems LLC
    Inventors: William C. Hurley, Eric R. Logan, David A. Seddon, Kenneth A. Chauvin
  • Patent number: 7197215
    Abstract: A tubeless fiber optic cable is disclosed, including at least one optical fiber extending in a longitudinal direction, and an outer jacket extending in the longitudinal direction so as to surround the optical fiber. The outer jacket has a cross-section defining an inner surface and an outer surface. At least one strength member extends in the longitudinal direction along the outer jacket and is disposed so that a portion thereof protrudes from the inner surface of the outer jacket, so that when a ripcord is pulled from the outer jacket separation of the outer jacket occurs, thereby allowing access to a cavity containing the optical fiber. In another embodiment, the ripcord protrudes from the inner surface of the outer jacket.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: March 27, 2007
    Assignee: Corning Cable Systems, LLC.
    Inventors: Paul R. Baird, Eric R. Logan, Richard S. Wagman
  • Patent number: 7085459
    Abstract: A fiber optic ribbon having a predetermined separation sequence including a first subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a first primary matrix. The first subunit being a portion of a first ribbon-unit. A second subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a second primary matrix. The second subunit being a portion of a second ribbon-unit that includes a plurality of subunits. A secondary matrix connects the first ribbon-unit and the second ribbon-unit. The secondary matrix has a preferential tear portion disposed adjacent to a ribbon-unit interface defined between the first ribbon-unit and the second ribbon-unit.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: August 1, 2006
    Assignee: Corning Cable Systems LLC
    Inventors: Craig M. Conrad, David W. Chiasson, Bradley J. Blazer, Eric R. Logan
  • Publication number: 20040223709
    Abstract: A fiber optic ribbon having a predetermined separation sequence including a first subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a first primary matrix. The first subunit being a portion of a first ribbon-unit. A second subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a second primary matrix. The second subunit being a portion of a second ribbon-unit that includes a plurality of subunits. A secondary matrix connects the first ribbon-unit and the second ribbon-unit. The secondary matrix has a preferential tear portion disposed adjacent to a ribbon-unit interface defined between the first ribbon-unit and the second ribbon-unit.
    Type: Application
    Filed: June 7, 2004
    Publication date: November 11, 2004
    Inventors: Craig M. Conrad, David W. Chiasson, Bradley J. Blazer, Eric R. Logan
  • Patent number: 6792184
    Abstract: A fiber optic ribbon having a predetermined separation sequence including a first subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a first primary matrix. The first subunit being a portion of a first ribbon-unit. A second subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a second primary matrix. The second subunit being a portion of a second ribbon-unit that includes a plurality of subunits. A secondary matrix connects the first ribbon-unit and the second ribbon-unit. The secondary matrix has a preferential tear portion disposed adjacent to a ribbon-unit interface defined between the first ribbon-unit and the second ribbon-unit.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: September 14, 2004
    Assignee: Corning Cable Systems LLC
    Inventors: Craig M. Conrad, David W. Chiasson, Bradley J. Blazer, Eric R. Logan
  • Publication number: 20030223714
    Abstract: A fiber optic ribbon having a predetermined separation sequence including a first subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a first primary matrix. The first subunit being a portion of a first ribbon-unit. A second subunit having a plurality of optical fibers arranged in a generally planar configuration being connected by a second primary matrix. The second subunit being a portion of a second ribbon-unit that includes a plurality of subunits. A secondary matrix connects the first ribbon-unit and the second ribbon-unit. The secondary matrix has a preferential tear portion disposed adjacent to a ribbon-unit interface defined between the first ribbon-unit and the second ribbon-unit.
    Type: Application
    Filed: April 10, 2003
    Publication date: December 4, 2003
    Inventors: Craig M. Conrad, David W. Chiasson, Bradley J. Blazer, Eric R. Logan
  • Patent number: 6606436
    Abstract: A fiber optic cable having strength assemblies (30) adjacent a tube having at least one optical fiber therein, at least one of the strength assemblies including a strength member for imparting crush resistance to the cable. The strength member is generally coupled to a first jacket, and may be surrounded by a single jacket, or by an armor tape and a second jacket. The strength member may be disposed in a recess of the tube. When crush loads are applied to the fiber optic cable, the stresses created in the cable are advantageously distributed by strength assemblies (30) whereby stress concentrations and undue deflection of the cable in response to the crush loads are avoided. The arrangement of the cable components and strength assemblies (30) inhibits slippage and/or warping of the components under stress, and thereby evenly distributes the stress for preventing crush induced attenuation in the optical fibers.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: August 12, 2003
    Assignee: Corning Cable Systems LLC
    Inventors: Eric R. Logan, Richard S. Wagman, Jason C. Lail, Michael J. Gimblet
  • Publication number: 20020044751
    Abstract: A fiber optic cable having strength assemblies (30) adjacent a tube for imparting crush resistance to the cable, at least one of the strength assemblies including a strength member in contact with a tube having at least one optical fiber therein. The strength member is coupled to a first jacket, and may be surrounded a single jacket, or by an armor tape and a second jacket. The strength member may be disposed in a recess of the tube. When crush loads are applied to the fiber optic cable, the stresses created in the cable are advantageously distributed by strength assemblies (30) whereby stress concentrations and undue deflection of the cable in response to the crush loads are avoided. Tight coupling and minimized gaps between the cable components in strength assemblies (30) inhibits slippage and/or warping of the components under stress, and thereby evenly distribute the stress for preventing crush induced attenuation in the optical fibers.
    Type: Application
    Filed: February 2, 2001
    Publication date: April 18, 2002
    Inventors: Eric R. Logan, Richard S. Wagman, Jason C. Lail, Michael J. Gimblet
  • Patent number: 6259844
    Abstract: A fiber optic cable having strength assemblies (30) adjacent a tube for imparting crush resistance to the cable, at least one of the strength assemblies including a strength member in contact with a tube having at least one optical fiber therein. The strength member is coupled to a first jacket, and may be surrounded a single jacket, or by an armor tape and a second jacket. The strength member may be disposed in a recess of the tube. When crush loads are applied to the fiber optic cable, the stresses created in the cable are advantageously distributed by strength assemblies (30) whereby stress concentrations and undue deflection of the cable in response to the crush loads are avoided. Tight coupling and minimized gaps between the cable components in strength assemblies (30) inhibits slippage and/or warping of the components under stress, and thereby evenly distribute the stress for preventing crush induced attenuation in the optical fibers.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: July 10, 2001
    Assignee: Siecor Operations, LLC
    Inventors: Eric R. Logan, Richard S. Wagman, Jason C. Lail, Michael J. Gimblet
  • Patent number: 6192178
    Abstract: A fiber optic cable (10) having a tube assembly (20) therein. Tube assembly (20) includes an optical fiber group (22) in a tube (21). Optical fiber group (22) comprises a medial optical fiber subgroup (23) and lateral optical fiber subgroups (24a,24b;25a,25b;26a,26b) adjacent thereto. Subgroups (24a,24b;25a,25b;26a,26b) define a step-like profile for maximizing optical fiber packing density of tube assembly (20) and/or defining a high fiber count cable (10). In an exemplary embodiment, fiber optic cable (10) can include strength assemblies (30) on opposing sides of tube assembly (20) for defining a preferential bend plane in fiber optic cable (10).
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 20, 2001
    Assignee: Siecor Operations, LLC
    Inventors: Eric R. Logan, Donald R. Parris, Jason C. Lail
  • Patent number: 6101305
    Abstract: A fiber optic cable (10) having a core tube (14) with a stack of optical fiber ribbons (12) therein, a jacket (20), and strength sections (30). Jacket (20) includes a non-uniform profile with close profile sections (22) and extended profile sections (26). Strength sections (30) comprise extended profile sections (26), dielectric strength rods (32), and ripcords (34) disposed between the strength rods. When it is desired to prepare fiber optic cable (10) for a cable pulling operation, portions of extended profile sections (26) are removed thereby exposing strength rods (32) and grip surfaces (22a) for receiving a pulling-grip (40). The compact size, flexibility, and light-weight construction of fiber optic cable (10) makes it a craft-friendly cable which is easy to route through cable passageways during the cable pulling operation.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: August 8, 2000
    Assignee: Siecor Corporation
    Inventors: Richard S. Wagman, Eric R. Logan