Patents by Inventor David B. Clark

David B. Clark 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: 8628120
    Abstract: The tubular threaded seal connector includes a coupling body for engaging a first pipe and a second pipe. A first coupling end is on the coupling body. A first chamfer is adjacent to the first coupling end.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: January 14, 2014
    Assignee: Sino-America Petroleum Equipment International, LLC
    Inventors: David B. Clark, Bryan Lane
  • Patent number: 8628121
    Abstract: A system for use in a wellbore using a tubing string formed from a plurality of connected tubulars. The tubulars are connected by a tubular threaded seal connector. The tubular threaded seal connector includes a coupling body. A first seal engagement portion is formed on the coupling body adjacent to a first shoulder formed on a portion of the J-area, and second seal engagement portion is formed on the coupling body adjacent a second shoulder formed on another portion of the J-area.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: January 14, 2014
    Assignee: Sino-America Petroleum Equipment International, LLC
    Inventors: David B. Clark, Bryan Lane
  • Patent number: 8371089
    Abstract: The present invention relates to the field of modular building systems. Embodiments of the invention include, a modular building system comprising planar sheets of material and moment connections, which are combined with tool-less or limited tool assembly mechanisms and can be used, for example, as spatial partitions, platforms, structural supports, or supports for articles. Specific embodiments of the invention provide structures having a seemingly homogenous, flowing ribbon structure.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: February 12, 2013
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: Jonathan King, David B. Clark, Robert Dunay, Joseph Wheeler
  • Publication number: 20100293869
    Abstract: The present invention relates to the field of modular building systems. Embodiments of the invention include, a modular building system comprising planar sheets of material and moment connections, which are combined with tool-less or limited tool assembly mechanisms and can be used, for example, as spatial partitions, platforms, structural supports, or supports for articles. Specific embodiments of the invention provide structures having a seemingly homogenous, flowing ribbon structure.
    Type: Application
    Filed: May 17, 2010
    Publication date: November 25, 2010
    Inventors: Jonathan KING, David B. Clark, Robert Dunay, Joseph Wheeler
  • Patent number: 5074795
    Abstract: A method for teaching children to ski uses a wide torso encircling band and two pairs of reins of different length. At an early stage of learning, the instructor straddles the child and uses short reins to directly control the speed and direction of the child and the pair of ski slowly. At a later stage of learning, the instructor backs away from the child and uses the long reins to directly control the child's speed and indirectly control the child's direction.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: December 24, 1991
    Assignee: Wee Ski, Inc.
    Inventor: David B. Clark
  • Patent number: 4867470
    Abstract: A monoski system includes a single ski having a conventional ski binding secured thereto and a boot receiver rearwardly of the ski binding. The boot receiver loosely receives the footwear of the skier and includes a boot supporting platform and a tapered section positioning the skier's rear boot in a forwardly inclined position. In one embodiment, the boot supporting platform is angularly adjustable about an upright axis to position the skier's rear boot at a small acute angle relative to the direction of intended travel. The inclination of the boot is adjustable by changing the tapered section.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: September 19, 1989
    Assignee: Sportech, Inc.
    Inventor: David B. Clark