Patents by Inventor Harvey A. Ugland

Harvey A. Ugland 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).

  • Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging tool
    Patent number: 7270139
    Abstract: A system and method of plugging a pipe including sealably securing onto the exterior of a pipe first and second spaced apart collars, each collar having a sealing face in a plane perpendicular the pipe axis, cutting and removing a length of pipe from between the collars leaving two open pipe ends, positioning first and second seal cups between the collars, each seal cup having a forwardly extending circumferential lip of internal diameter greater than the external diameter of the pipe, each seal cup having top and bottom cam followers, moving cam surfaces against the cam followers to guide the seal cups into sealing engagement with the sealing faces of the collars, and forcing a wedge between rearward surfaces of the seal cups.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: September 18, 2007
    Assignee: TDW Delaware, Inc.
    Inventors: Charles D. Calkins, Harvey A. Ugland, Buddy A. Wilson
  • Cam-assisted, wedge actuated, metal-to-metal seal, block and bleed plugging tool
    Publication number: 20060237060
    Abstract: A system and method of plugging a pipe including sealably securing onto the exterior of a pipe first and second spaced apart collars, each collar having a sealing face in a plane perpendicular the pipe axis, cutting and removing a length of pipe from between the collars leaving two open pipe ends, positioning first and second seal cups between the collars, each seal cup having a forwardly extending circumferential lip of internal diameter greater than the external diameter of the pipe, each seal cup having top and bottom cam followers, moving cam surfaces against the cam followers to guide the seal cups into sealing engagement with the sealing faces of the collars, and forcing a wedge between rearward surfaces of the seal cups.
    Type: Application
    Filed: April 25, 2005
    Publication date: October 26, 2006
    Inventors: Charles Calkins, Harvey Ugland, Buddy Wilson