Patents by Inventor Earl V. Davis

Earl V. Davis 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).

  • Penetrameter positioner for bore-side radiography of tubes
    Patent number: 4368996
    Abstract: A positioner is provided for placing plaque or wire penetrameters, as used in radiographic inspection, in close proximity with the inner wall of tubing at any desired location along the tubing. The positioner head carrying the penetrameter is inflatable whereby it is positioned in the deflated condition, inflated to place the penetrameter against a weld to be inspected in the tubing wall, and then deflated during removal. If desired, the penetrameter holder may be used to center the radiographic source on the axis of the tube.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: January 18, 1983
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Earl V. Davis, Billy E. Foster
  • Film holder for radiographing tubing
    Patent number: 3952204
    Abstract: A film cassette is provided which may be easily placed about tubing or piping and readily held in place while radiographic inspection is performed. A pair of precurved light-impervious semi-rigid plastic sheets, hinged at one edge, enclose sheet film together with any metallic foils or screens. Other edges are made light-tight with removable caps, and the entire unit is held securely about the object to be radiographed with a releasable fastener such as a strip of Velcro.
    Type: Grant
    Filed: January 14, 1975
    Date of Patent: April 20, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Earl V. Davis, Billy E. Foster