Patents by Inventor David W. Johnson

David W. Johnson 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).

  • Gearbox Output Switcher
    Publication number: 20100206686
    Abstract: A gear switching mechanism for a printing machine comprises at least one pair of input and driven gears, each pair rotationally mounted on a corresponding common axle. The input gear of each pair may be coupled to a common drive, while each driven gear is coupled to a separate output. A rotational gear coupling is mounted to translate along each axle to selectively engage and disengage the corresponding pair of input and driven gears. The rotational gear coupling includes a cam follower that slides along a cam profile of a cam shuttle. The shuttle defines a cam profile that is normal to the common axles. In one embodiment, the cam shuttle translates linearly, while in another embodiment, the shuttle rotates. The cam profile is configured to selectively engage and disengage the rotational couplings of each pair of input and driven gears.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 19, 2010
    Applicant: XEROX CORPORATION
    Inventors: David W. Johnson, Brent R. Jones
  • Agronomically adapted alfalfa plants with high levels of somatic embryogenesis
    Patent number: 7772464
    Abstract: The invention provides alfalfa plants having adaptation, productivity, winterhardiness, and disease resistance with high levels of somatic embryogenesis. Plants and plant parts of the invention are useful in the efficient development of transgenic alfalfa plants with adaptation, productivity, winterhardiness, and disease resistance.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: August 10, 2010
    Assignee: Cal/West Seeds
    Inventors: Jay M. Sandman, David W. Johnson, Lauren D. Johnson, Mark E. Darling, Jonathan M. Reich
  • Composite Laminate Structure
    Publication number: 20100173118
    Abstract: A method and apparatus for forming an improved pultruded and clinched Z-axis fiber reinforced composite laminate structure. The upper and lower skins and the core are pulled automatically through tooling where the skin material is wetted-out with resin and the entire composite laminate is preformed in nearly its final thickness. The preformed composite laminate continues to be pulled into an automatic 3-dimensional Z-axis fiber deposition machine that deposits “groupings of fiber filaments” at multiple locations normal to the plane of the composite laminate structure and cuts each individual grouping such that an extension of each “grouping of fiber filaments” remains above the upper skin and below the lower skin. The preformed composite laminate then continues to be pulled into a secondary wet-out station.
    Type: Application
    Filed: May 7, 2007
    Publication date: July 8, 2010
    Inventors: David W. Johnson, Scott A. Garrett, Stephen G. Moyers, James M. Hook
  • Composite sandwich panel and method of making same
    Patent number: 7731046
    Abstract: A method of manufacturing a composite panel includes manufacturing a composite panel having a first skin, a second skin, a core, and a plurality of distinct groupings of Z-axis fibers that extend through the core from the first skin to the second skin, wherein the Z-axis fibers include opposite ends respectively terminating at and integrated into the first skin and the second skin; and creating structural stringers in the composite panel by removing the second skin and substantially all of the core and the Z-axis fibers down to or adjacent to the first skin.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: June 8, 2010
    Assignee: Ebert Composites Corporation
    Inventor: David W. Johnson
  • System and method for maintaining the location of a fiber doff inner-diameter-tow at the point of payout within a constant inertial reference frame
    Patent number: 7690179
    Abstract: A method of maintaining the location of a fiber doff inner-diameter-tow at a point of payout within a constant inertial reference frame includes providing a flat fiber tow payout system with a center-pull doff of flat fiber tow that pays out at a point of payout along an inner diameter of the center-pull doff with rotation of the center-pull doff about a vertically oriented axis of rotation, the flat fiber tow payout system including a constant inertial reference frame for payout of the flat fiber tow along the inner diameter of the center-pull doff without twisting the flat fiber tow; and accelerating and stopping rotation of the center-pull doff with the flat fiber tow payout system so as to maintain payout of the flat fiber tow along the inner diameter of the center-pull doff in the constant inertial reference frame, preventing twisting of the flat fiber tow.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: April 6, 2010
    Assignee: Ebert Composites Corporation
    Inventors: David W. Johnson, Scott A. Garrett, Stephen G. Moyers
  • Elastomeric article with fine colloidal silica surface treatment, and its preparation
    Patent number: 7582343
    Abstract: A surface-modified article is formed of an elastomeric matrix, such as a glove shape, and a plurality of fine silica particles affixed to at least a portion of the surface of the matrix, the outside surface in the case of the glove. The fine silica particles increase the coefficient of friction of the article surface. The fine silica particles may also be made electrically conductive, so that static charge at the surface of the article is dissipated. The silica particles are applied by mixing them into a coating composition, applying the coating composition to the surface of a mold, and solidifying a flowable elastomeric composition against the coated surface. The coating composition may include a coagulant or a parting agent.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: September 1, 2009
    Inventor: David W. Johnson
  • Composite Laminate Structure
    Publication number: 20090214849
    Abstract: A composite laminate structure includes a first skin; a second skin; a core between the first skin and the second skin, the core including adjacent core sections and a Z-Y partition separating the adjacent core sections; and a plurality of distinct groupings of Z-axis fibers that extend from the first skin to the second skin through the adjacent core sections and the Z-Y partition separating the adjacent core sections.
    Type: Application
    Filed: December 11, 2008
    Publication date: August 27, 2009
    Applicant: EBERT COMPOSITES CORPORATION
    Inventors: David W. Johnson, Scott A. Garrett, Stephen G. Moyers
  • Geographical network alarm viewer
    Patent number: 7542428
    Abstract: Methods and systems provide a geographical network alarm viewer (GNAV) application that receives, tracks, aggregates, reports, and maps data associated with cable telephony services outages occurring in a cable services network. The GNAV application integrates network map data and identification information associated with customer locations, equipment, and associated network alarm data from a network operations center. All customer location addresses associated with individual network alarms are located and mapped on a geographical network map. Because the alarms are received, tracked, aggregated, reported, and mapped in real-time, service personnel may respond to network outages in a more efficient manner, and service technicians and service vehicles may be directed to repair service outages based on more accurate location and service outage timing data.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: June 2, 2009
    Assignee: Cox Communications, Inc.
    Inventors: David W. Johnson, Chris D. Boesl
  • Method of Inserting Z-Axis Reinforcing Fibers into a Composite Laminate
    Publication number: 20090071594
    Abstract: A method of inserting z-axis reinforcing fibers into a multi-layer composite laminate. Layers of material made up of z-axis fiber and y-axis fibers are automatically transported into a z-fiber deposition machine having a housing with upper and lower surfaces. Z-axis apertures are formed in the respective upper and lower surfaces. An elongated solid rod having a tapered front tip is aligned in close proximity to the aperture in the bottom surface. The rod is first rotated by a motor and then actuated upwardly completely through the thickness of the layer of x-y material by an actuator. A first hollow tube having a z-axis is axially aligned with the aperture in the top surface and a fiber bundle is threaded downwardly through a first hollow tube to a position adjacent its bottom end.
    Type: Application
    Filed: June 16, 2008
    Publication date: March 19, 2009
    Applicant: EBERT COMPOSITES CORPORATION
    Inventors: David W. Johnson, Scott A. Garrett, James M. Hook, Stephen G. Moyers
  • System and Method for Maintaining the Location of a Fiber Doff Inner-Diameter-Tow at the Point of Payout Within a Constant Inertial Reference Frame
    Publication number: 20080314017
    Abstract: A method of maintaining the location of a fiber doff inner-diameter-tow at a point of payout within a constant inertial reference frame includes providing a flat fiber tow payout system with a center-pull doff of flat fiber tow that pays out at a point of payout along an inner diameter of the center-pull doff with rotation of the center-pull doff about a vertically oriented axis of rotation, the flat fiber tow payout system including a constant inertial reference frame for payout of the flat fiber tow along the inner diameter of the center-pull doff without twisting the flat fiber tow; and accelerating and stopping rotation of the center-pull doff with the flat fiber tow payout system so as to maintain payout of the flat fiber tow along the inner diameter of the center-pull doff in the constant inertial reference frame, preventing twisting of the flat fiber tow.
    Type: Application
    Filed: June 29, 2007
    Publication date: December 25, 2008
    Applicant: EBERT COMPOSITES CORPORATION
    Inventors: David W. Johnson, Scott A. Garrett, Stephen G. Moyers
  • Composite Sandwich Panel and Method of Making Same
    Publication number: 20080145592
    Abstract: A method of manufacturing a composite panel includes manufacturing a composite panel having a first skin, a second skin, a core, and a plurality of distinct groupings of Z-axis fibers that extend through the core from the first skin to the second skin, wherein the Z-axis fibers include opposite ends respectively terminating at and integrated into the first skin and the second skin; and creating structural stringers in the composite panel by removing the second skin and substantially all of the core and the Z-axis fibers down to or adjacent to the first skin.
    Type: Application
    Filed: July 19, 2007
    Publication date: June 19, 2008
    Applicant: EBERT COMPOSITES CORPORATION
    Inventor: David W. Johnson
  • Apparatus for inserting z-axis reinforcing fibers into a composite laminate
    Patent number: 7387147
    Abstract: A method of inserting z-axis reinforcing fibers into a multi-layer composite laminate. Layers of material made up of z-axis fiber and y-axis fibers are automatically transported into a z-fiber deposition machine having a housing with upper and lower surfaces. Z-axis apertures are formed in the respective upper and lower surfaces. An elongated solid rod having a tapered front tip is aligned in close proximity to the aperture in the bottom surface. The rod is first rotated by a motor and then actuated upwardly completely through the thickness of the layer of x-y material by an actuator. A first hollow tube having a z-axis is axially aligned with the aperture in the top surface and a fiber bundle is threaded downwardly through a first hollow tube to a position adjacent its bottom end.
    Type: Grant
    Filed: September 11, 2006
    Date of Patent: June 17, 2008
    Assignee: Ebert Composites Corporation
    Inventors: David W. Johnson, Scott A. Garrett, James M. Hooks, Stephen G. Moyers
  • 90 Degree Ply Placement System and Method
    Publication number: 20080091293
    Abstract: A method of placing a 90 degree ply on a separate 0 degree material includes providing 90 degree ply from a 90 degree ply material source; moving the 90 degree ply in a 90 degree ply carrier to a position over the 0 degree material; removing the 90 degree ply carrier from the 0 degree material and simultaneously pushing the 90 degree ply off of the 90 degree ply carrier and onto the 0 degree material; and severing the 90 degree ply from the 90 degree ply material source so that the 90 degree ply remains on the 0 degree material.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 17, 2008
    Applicant: EBERT COMPOSITES CORPORATION
    Inventors: David W. Johnson, Scott A. Garrett, Stephen C. Moyers
  • Electronically-controlled locker system
    Patent number: 7323967
    Abstract: An electronically-controlled locker system that utilizes distributing processing to control access to, and assignment of, a plurality of lockers in a school, workplace, fitness center, etc. The system uses a plurality of locker control units that control access to a corresponding set of lockers based on user inputs and on user/locker authorization data that is provided from a central administrator workstation. This administrator workstation communicates with a system control unit that is in communication with every locker control unit and which allows cross-communication between locker control units.
    Type: Grant
    Filed: January 21, 2005
    Date of Patent: January 29, 2008
    Assignees: Penco Products, Inc., Digitech International, Inc.
    Inventors: Kevin E. Booth, Harry N. Popolow, Richard R. Ford, Edward E. Johnson, Jon S. Loftin, Lance C. Osborne, David W. Johnson
  • Alfalfa plants having improved fast recovery after harvest and methods for producing same
    Patent number: 7288697
    Abstract: The invention provides alfalfa plants having improved standability and/or fast recovery after spring green-up or after harvest and methods for producing such plants. Such alfalfa plants provide increased annual yield of high quality forage.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: October 30, 2007
    Assignee: Cal/West Seeds
    Inventors: David W. Johnson, Mark E. Darling, Douglas K. Miller, Jonathan M. Reich
  • Alfalfa plants having improved standability and methods for producing same
    Patent number: 7288698
    Abstract: The invention provides alfalfa plants having improved standability and/or fast recovery after spring green-up or after harvest and methods for producing such plants. Such alfalfa plants provide increased annual yield of high quality forage.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: October 30, 2007
    Assignee: Cal/West Seeds
    Inventors: David W. Johnson, Mark E. Darling, Douglas K. Miller, Jonathan M. Reich
  • Composite laminate structure
    Patent number: 7217453
    Abstract: A method and apparatus for forming an improved pultruded and clinched Z-axis fiber reinforced composite laminate structure. The upper and lower skins and the core are pulled automatically through tooling where the skin material is wetted-out with resin and the entire composite laminate is preformed in nearly its final thickness. The preformed composite laminate continues to be pulled into an automatic 3-dimensional Z-axis fiber deposition machine that deposits “groupings of fiber filaments” at multiple locations normal to the plane of the composite laminate structure and cuts each individual grouping such that an extension of each “grouping of fiber filaments” remains above the upper skin and below the lower skin. The preformed composite laminate then continues to be pulled into a secondary wet-out station.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 15, 2007
    Assignee: Ebert Compoistes Corporation
    Inventors: David W Johnson, Scott A. Garrett, Stephen G. Moyers
  • Method of inserting z-axis reinforcing fibers into a composite laminate
    Patent number: 7105071
    Abstract: A method of inserting z-axis reinforcing fibers into a multi-layer composite laminate. Layers of material made up of z-axis fiber and y-axis fibers are automatically transported into a z-fiber deposition machine having a housing with upper and lower surfaces. Z-axis apertures are formed in the respective upper and lower surfaces. An elongated solid rod having a tapered front tip is aligned in close proximity to the aperture in the bottom surface. The rod is first rotated by a motor and then actuated upwardly completely through the thickness of the layer of x-y material by an actuator. A first hollow tube having a z-axis is axially aligned with the aperture in the top surface and a fiber bundle is threaded downwardly through a first hollow tube to a position adjacent its bottom end.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: September 12, 2006
    Assignee: Ebert Composites Corporation
    Inventors: David W. Johnson, Scott A. Garrett, James M. Hook, Stephen G. Moyers
  • 3D fiber elements with high moment of inertia characteristics in composite sandwich laminates
    Patent number: 7056576
    Abstract: A shear-resistant Z-axis fiber-reinforced composite laminate structure includes a core material; an upper laminate; a lower laminate; and a plurality of contiguous cured resin Z-axis fiber bundles disposed in the core material between the upper laminate and the lower laminate to form high moment-of-inertia solid composite structural elements in the core material.
    Type: Grant
    Filed: June 8, 2004
    Date of Patent: June 6, 2006
    Assignee: Ebert Composites, Inc.
    Inventor: David W. Johnson
  • Method for treating an elastomeric article
    Patent number: 6887542
    Abstract: A method of treating a surface of an elastomeric article is provided. The method includes providing a substrate having a treatment, providing an elastomeric article with an exposed surface, placing the article and the substrate into a tumbling apparatus, and tumbling the article with the substrate so that the treatment is transferred from the substrate to the exposed surface.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: May 3, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: William E. Conley, David W. Johnson