Patents by Inventor John Spraggon

John Spraggon 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).

  • Paddle support
    Patent number: 6695537
    Abstract: The present invention provides a support sleeve for supporting an internal pipeline apparatus in a pipeline. The sleeve is provided with a number of deformable splines around its circumference which keep the pipeline apparatus centralized in the pipeline during operation. The leading edges of the splines have chamfers so that, when the sleeve encounters a reduction in the diameter of the pipeline, the splines deform in a direction transverse to the longitudinal axis of the sleeve. It this way, less force is required to move the apparatus and sleeve through a portion of pipeline of reduced diameter than is the case with conventional disc supports.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: February 24, 2004
    Assignee: Pipeline Engineering and Supply Company Limited
    Inventor: John Spraggon
  • Paddle support
    Publication number: 20030059261
    Abstract: The present invention provides a support sleeve for supporting an internal pipeline apparatus in a pipeline. The sleeve is provided with a number of deformable splines around its circumference which keep the pipeline apparatus centralised in the pipeline during operation. The leading edges of the splines have chamfers so that, when the sleeve encounters a reduction in the diameter of the pipeline, the splines deform in a direction transverse to the longitudinal axis of the sleeve. It this way, less force is required to move the apparatus and sleeve through a portion of pipeline of reduced diameter than is the case with conventional disc supports.
    Type: Application
    Filed: August 21, 2002
    Publication date: March 27, 2003
    Inventor: John Spraggon