Patents by Inventor Gregg D. Ward

Gregg D. Ward 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).

  • Mechanical pipe joint
    Patent number: 4645247
    Abstract: Mechanical pipe joints and methods of forming same, wherein pipe ends are first prestrained into expanded bell and expanded pin shapes and then again strained by interference joining, both prestraining and subsequent straining being under controlled conditions which take maximum advantage of the metallurgical and physical properties of the materials to provide improved connection strength produced through approaching the ultimate strength of the material. Strain aging prior to joining may be used to further enhance connection strength to a point which requires exceeding the ultimate strength of the parent material.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: February 24, 1987
    Assignee: Energy Pipelines International Company
    Inventor: Gregg D. Ward
  • Method of producing pipe joints
    Patent number: 4627146
    Abstract: Mechanical pipe joints and methods of forming same, wherein pipe ends are first prestrained into expanded bell and expanded pin shapes and then again strained by interference joining, both prestraining and subsequent straining being under controlled conditions which take maximum advantage of the metallurgical and physical properties of the materials to provide improved connection strength produced through approaching the ultimate strength of the material. Strain aging prior to joining may be used to further enhance connection strength to a point which requires exceeding the ultimate strength of the parent material.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: December 9, 1986
    Assignee: Energy Pipelines International Company
    Inventor: Gregg D. Ward