Patents by Inventor Dennis M. Knecht

Dennis M. Knecht 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: 7945133
    Abstract: A fiber optic cable assembly with a floating tap is disclosed, wherein the assembly comprises a fiber optic cable having a cable fiber assembly, such as in the form of a ribbon stack. The assembly includes at least one network access point (NAP) for accessing at least one cable fiber in the cable fiber assembly and at least one strength area for example a strength member. At least one cable fiber is extracted from the cable fiber assembly and held by a transition assembly. A buffer conduit loosely contains the at least one cable fiber and guides it to an intermediate buffer conduit, which in turn guides the at least one cable fiber to a splice tube. The intermediate buffer conduit can translate relative to the splice tube. At least one tether fiber is spliced to the at least one cable fiber. Alternatively, the at least one cable fiber has sufficient length to serve as the at least one tether fiber so that splicing to another fiber is not required. Each strength member is covered by a movable member.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: May 17, 2011
    Assignee: Corning Cable Systems LLC
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher P. Lewallen, James P. Luther
  • Publication number: 20100278495
    Abstract: A fiber optic cable assembly with a floating tap is disclosed, wherein the assembly comprises a fiber optic cable having a cable fiber assembly, such as in the form of a ribbon stack. The assembly includes at least one network access point (NAP) for accessing at least one cable fiber in the cable fiber assembly and at least one strength area for example a strength member. At least one cable fiber is extracted from the cable fiber assembly and held by a transition assembly. A buffer conduit loosely contains the at least one cable fiber and guides it to an intermediate buffer conduit, which in turn guides the at least one cable fiber to a splice tube. The intermediate buffer conduit can translate relative to the splice tube. At least one tether fiber is spliced to the at least one cable fiber. Alternatively, the at least one cable fiber has sufficient length to serve as the at least one tether fiber so that splicing to another fiber is not required. Each strength member is covered by a movable member.
    Type: Application
    Filed: July 8, 2010
    Publication date: November 4, 2010
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher P. Lewallen, James P. Luther
  • Patent number: 7756373
    Abstract: A fiber optic cable assembly with a floating tap is disclosed, wherein the assembly comprises a fiber optic cable having a cable fiber assembly, such as in the form of a ribbon stack. The assembly includes at least one network access point (NAP) for accessing at least one cable fiber in the cable fiber assembly and at least one strength area for example a strength member. At least one cable fiber is extracted from the cable fiber assembly and held by a transition assembly. A buffer conduit loosely contains the at least one cable fiber and guides it to an intermediate buffer conduit, which in turn guides the at least one cable fiber to a splice tube. The intermediate buffer conduit can translate relative to the splice tube. At least one tether fiber is spliced to the at least one cable fiber. Alternatively, the at least one cable fiber has sufficient length to serve as the at least one tether fiber so that splicing to another fiber is not required. Each strength member is covered by a movable member.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: July 13, 2010
    Assignee: Corning Cable Systems LLC
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher P. Lewallen, James P. Luther
  • Publication number: 20100154609
    Abstract: 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. Specifically, the methods include presenting a length of distribution optical fiber outward of the protective covering that is longer than the opening at access location. After the opening is made in the protective covering at the access location, the optical fibers for distribution are selected. Then a tool according to the present invention is positioned about the optical fibers selected for distribution and slid within the protective covering of the fiber optic distribution cable until it reaches a cutting location within the fiber optic distribution cable. Consequently, the tool is positioned for cutting the distribution optical fiber at a cutting location within the fiber optic distribution cable at a downstream location.
    Type: Application
    Filed: August 3, 2009
    Publication date: June 24, 2010
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher Paul Lewallen, James P. Luther
  • Patent number: 7693374
    Abstract: 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. Specifically, the methods include presenting a length of distribution optical fiber outward of the protective covering that is longer than the opening at access location. After the opening is made in the protective covering at the access location, the optical fibers for distribution are selected. Then a tool according to the present invention is positioned about the optical fibers selected for distribution and slid within the protective covering of the fiber optic distribution cable until it reaches a cutting location within the fiber optic distribution cable. Consequently, the tool is positioned for cutting the distribution optical fiber at a cutting location within the fiber optic distribution cable at a downstream location.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: April 6, 2010
    Assignee: Corning Cable Systems LLC
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher Paul Lewallen, James P. Luther
  • Publication number: 20100054679
    Abstract: A fiber optic cable assembly with a floating tap is disclosed, wherein the assembly comprises a fiber optic cable having a cable fiber assembly, such as in the form of a ribbon stack. The assembly includes at least one network access point (NAP) for accessing at least one cable fiber in the cable fiber assembly and at least one strength area for example a strength member. At least one cable fiber is extracted from the cable fiber assembly and held by a transition assembly. A buffer conduit loosely contains the at least one cable fiber and guides it to an intermediate buffer conduit, which in turn guides the at least one cable fiber to a splice tube. The intermediate buffer conduit can translate relative to the splice tube. At least one tether fiber is spliced to the at least one cable fiber. Alternatively, the at least one cable fiber has sufficient length to serve as the at least one tether fiber so that splicing to another fiber is not required. Each strength member is covered by a movable member.
    Type: Application
    Filed: August 28, 2008
    Publication date: March 4, 2010
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher P. Lewallen, James P. Luther
  • Publication number: 20100054680
    Abstract: Disclosed are spools, fiber optic assemblies, and methods for use with a lashing machine or other suitable deployment for routing the fiber optic cable toward the subscriber allowing the craft to quickly and easily deploy the fiber optic cable in the field. The fiber optic assemblies may include a spool, at least one fiber optic cable disposed on the spool, and a fiber optic connector. In one embodiment, the spool includes a first spool flange and a second spool flange that include notches that overlap at angular positions for allowing the spooling of fiber optic cable off the same. In another embodiment, the fiber optic connector is attached to the spool for plug and play connectivity of the spool. In other embodiments, a splitter may be attached to the spool for splitting the optical signal.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 4, 2010
    Inventors: Gregory A. Lochkovic, Michael J. Ott, Jorge R. Serrano, Dennis M. Knecht
  • Patent number: 7660504
    Abstract: Connectorized nano-engineered optical fibers and method for forming them are disclosed. The methods include heating a mid-span bare fiber portion of the nano-engineered fiber to substantially collapse the airlines therein so as to form a substantially airline-free portion. The fiber is then inserted into a ferrule channel so that the fiber end protrudes beyond the ferrule end face, but with the substantially airline-free portion positioned at the ferrule end face. The fiber is then cleaved at or near the ferrule end face in the substantially airline-free portion, and the new fiber end face polished to create a solid fiber end face that coincides with the ferrule end face. The methods result in relatively small changes to the mode field diameter (MFD) and/or to the outer cladding diameter.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: February 9, 2010
    Assignee: Corning Cable Systems LLC
    Inventors: Robert R. Beshears, Dana C. Bookbinder, Terry L. Cooke, John B. Johnson, Dennis M. Knecht, Ming-Jun Li, Michael H. Rasmussen
  • Patent number: 7596294
    Abstract: The present invention provides a cable assembly comprising a flexible network access point that includes a flexible cover over a mid-span access location, providing environmental protection for the mid-span access location and facilitating installation of a distribution cable. Subsequent to installation, the mid-span access location is exposed and accessed by pulling a ripcord, for example, thereby removing a portion of the flexible cover. This exposes one or more connectors, which may be single or multi-fiber connectors, that are configured to receive the receptacles of one or more drop cables and/or tethers. Thus, a semi-hardened, selectively-usable closure is provided.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: September 29, 2009
    Assignee: Corning Cable Systems LLC
    Inventors: Dennis M. Knecht, Christopher Paul Lewallen, James P. Luther, Thomas Theuerkorn, Xin Liu
  • Patent number: 7577330
    Abstract: Connectorized nano-engineered optical fibers and method for forming them are disclosed. The methods include heating a mid-span bare fiber portion of the nano-engineered fiber to collapse the airlines therein so as to form an airline-free portion. The fiber is then inserted into a ferrule channel so that the fiber end protrudes beyond the ferrule end face, but with the airline-free portion positioned at the ferrule end face. The fiber is then cleaved at or near the ferrule end face in the airline-free portion, and the new fiber end face polished to create a solid fiber end face that coincides with the ferrule end face. The methods result in at most only minimal changes to the mode field diameter (MFD) and/or to the outer cladding diameter, which is essential in forming a connectorized nano-engineered fiber that can connect to like-size nano-engineered or non-nano-engineered fibers.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 18, 2009
    Assignee: Corning Cable Systems LLC
    Inventors: Robert R. Beshears, Dana C. Bookbinder, Terry L. Cooke, John B. Johnson, Dennis M. Knecht, Ming-Jun Li, Michael H. Rasmussen
  • Publication number: 20090199597
    Abstract: Systems and methods of collapsing the air lines in the air line-containing region of a nanostructure optical fiber are disclosed. One method includes initiating irradiation of a portion of the nanostructure optical fiber from essentially opposite directions with at least first and second laser beams having substantially equal power and essentially the same mid-infrared wavelength. The method includes continuing the irradiation for an irradiation time t1 so as to bring the optical fiber portion to a softening temperature TS at which the air lines in the optical fiber portion collapse into the adjacent cladding. Exemplary optical systems for carrying out the air- line-collapsing methods of the present invention are also disclosed.
    Type: Application
    Filed: February 7, 2008
    Publication date: August 13, 2009
    Inventors: Jeffrey D. Danley, Dennis M. Knecht, Robert S. Wagner
  • Publication number: 20080304796
    Abstract: Connectorized nano-engineered optical fibers and method for forming them are disclosed. The methods include heating a mid-span bare fiber portion of the nano-engineered fiber to substantially collapse the airlines therein so as to form a substantially airline-free portion. The fiber is then inserted into a ferrule channel so that the fiber end protrudes beyond the ferrule end face, but with the substantially airline-free portion positioned at the ferrule end face. The fiber is then cleaved at or near the ferrule end face in the substantially airline-free portion, and the new fiber end face polished to create a solid fiber end face that coincides with the ferrule end face. The methods result in relatively small changes to the mode field diameter (MFD) and/or to the outer cladding diameter.
    Type: Application
    Filed: July 23, 2008
    Publication date: December 11, 2008
    Inventors: Robert R. Beshears, Dana C. Bookbinder, Terry L. Cooke, John B. Johnson, Dennis M. Knecht, Ming-Jun Li, Michael H. Rasmussen
  • Publication number: 20080273839
    Abstract: Connectorized nano-engineered optical fibers and method for forming them are disclosed. The methods include heating a mid-span bare fiber portion of the nano-engineered fiber to collapse the airlines therein so as to form an airline-free portion. The fiber is then inserted into a ferrule channel so that the fiber end protrudes beyond the ferrule end face, but with the airline-free portion positioned at the ferrule end face. The fiber is then cleaved at or near the ferrule end face in the airline-free portion, and the new fiber end face polished to create a solid fiber end face that coincides with the ferrule end face. The methods result in at most only minimal changes to the mode field diameter (MFD) and/or to the outer cladding diameter, which is essential in forming a connectorized nano-engineered fiber that can connect to like-size nano-engineered or non-nano-engineered fibers.
    Type: Application
    Filed: March 20, 2008
    Publication date: November 6, 2008
    Inventors: Robert R. Beshears, Dana C. Bookbinder, Terry L. Cooke, John B. Johnson, Dennis M. Knecht, Ming-Jun Li
  • Publication number: 20080152293
    Abstract: The present invention provides a cable assembly comprising a flexible network access point that includes a flexible cover over a mid-span access location, providing environmental protection for the mid-span access location and facilitating installation of a distribution cable. Subsequent to installation, the mid-span access location is exposed and accessed by pulling a ripcord, for example, thereby removing a portion of the flexible cover. This exposes one or more connectors, which may be single or multi-fiber connectors, that are configured to receive the receptacles of one or more drop cables and/or tethers. Thus, a semi-hardened, selectively-usable closure is provided.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventors: Dennis M. Knecht, Christopher Paul Lewallen, James P. Luther, Thomas Theuerkorn, Xin Liu
  • Patent number: 7346243
    Abstract: 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: Grant
    Filed: May 11, 2006
    Date of Patent: March 18, 2008
    Assignee: Corning Cable Systems LLC
    Inventors: Joseph T. Cody, Dennis M. Knecht, Christopher Paul Lewallen, James P. Luther
  • Patent number: 7267491
    Abstract: A ferrule assembly having highly protruding optical fibers and a corresponding method of efficiently, precisely and repeatedly fabricating the ferrule assemblies are provided. In this regard, a ferrule assembly is provided that includes a plurality of optical fibers extending at least about 3.5 ?m beyond the front face. The end portions of the optical fibers of the ferrule assembly may also be substantially coplanar with the end portions of the optical fibers differing in position from one another by no more than 100 nm. The ferrule assembly may be efficiently fabricated by polishing the optical fibers to a desired protrusion without first grinding or polishing the optical fibers to be flush with the front face of the ferrule. The ferrule assembly may be even more efficiently fabricated in instances in which the ferrule includes at least one polishing feature, such as an outwardly extending pedestal or a recessed portion.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: September 11, 2007
    Assignee: Corning Cable Systems LLC
    Inventors: James P. Luther, Hieu V. Tran, Dennis M. Knecht, Robert B. Elkins, II
  • Patent number: 7228036
    Abstract: An adjustable tether assembly for a fiber optic distribution cable includes a tether cable and an overmolded housing secured at the end of the tether cable having at least one connector port. The tether assembly is attached to the distribution cable such that the position of the connector port is adjustable along the length of the distribution cable for mitigating differences between the pre-engineered span length distance and the actual span length distance following installation of the distribution cable. A method for mitigating a span length measurement difference in a pre-engineered fiber optic communications network is provided that includes optically connecting an adjustable tether assembly at a mid-span access location of a fiber optic distribution cable and positioning a housing secured at the free end of a tether cable having at least one connector port at a desired location in the network to compensate for the span length measurement difference.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: June 5, 2007
    Assignee: Corning Cable Systems LLC
    Inventors: Robert B. Elkins, II, Dennis M. Knecht, James P. Luther, Lars K. Nielsen, Thomas Theuerkorn
  • Patent number: 7209375
    Abstract: Eccentricity of a optical fiber installed in a passageway of a ferrule is minimized by imposing a force on the end of the optical fiber projecting from the passageway at the ferrule end face to push the optical fiber to a desired position in the passageway, prior to curing an adhesive used for fixing the optical fiber in the passageway, so as to compensate for eccentricity of the passageway. In one embodiment, the force is imposed on the optical fiber by hanging a weight on the optical fiber. In another embodiment, the force is imposed on the optical fiber by using a pressurized jet of fluid. The point of application of the force, the magnitude of the force, and the viscosity of the adhesive are selected such that minimal optical fiber bending occurs, thereby assuring that the optical fiber is positioned at the desired position in the passageway for an appreciable distance from the ferrule end face along the passageway.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: April 24, 2007
    Assignee: Corning Cable Systems LLC
    Inventors: Brian J. Gimbel, James P. Luther, Thomas Theuerkorn, Hieu V. Tran, Darrell Childers, Dennis M. Knecht
  • Patent number: 7184633
    Abstract: A factory-manufactured, preterminated fiber optic distribution cable having at least one predetermined access location for providing access to at least one preterminated optical fiber. A preterminated fiber optic distribution cable comprising at least one buffer tube comprising at least one optical fiber, a buffer tube transition piece operable for transitioning the at least one optical fiber from the at least one buffer tube into at least one protective tube, a C-shaped molded member defining a longitudinally extending optical fiber guide channel operable for storing a length of the at least one preterminated optical fiber and a protective means. A method of mid-span accessing at least one optical fiber from a fiber optic distribution cable. A buffer tube transition piece operable for transitioning a plurality of preterminated optical fibers from a buffer tube into protective tubing.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: February 27, 2007
    Inventors: Terry L. Cooke, John B. Johnson, Dennis M. Knecht, James P. Luther, Lars K. Nielsen
  • Patent number: 7088893
    Abstract: A factory-prepared preterminated and pre-connectorized fiber optic distribution cable having at least one mid-span access location for providing access to a plurality of preterminated optical fibers pre-connectorized with a multi-fiber connector is provided. Also provided is a method of forming a pre-connectorized fiber optic distribution cable by terminating and pre-connectorizing a predetermined number of the plurality of optical fibers of the cable to create a pre-connectorized mid-span access location. The fiber optic distribution cable provides a low profile mid-span access location that is sufficiently flexible to be installed through relatively small-diameter buried conduits and over aerial installation sheave wheels and pulleys without violating the minimum bend radius of the cable or the optical fibers.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: August 8, 2006
    Assignee: Corning Cable Systems LLC
    Inventors: Terry L. Cooke, Robert B. Elkins, II, John B. Johnson, Dennis M. Knecht, James P. Luther, Lars K. Nielsen