Patents by Inventor William L. Denhart

William L. Denhart 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).

  • Test apparatus for pressurized container and method
    Patent number: 3958448
    Abstract: A pressure testing apparatus for sealed containers including a container receiving enclosure defined by a base wall, a side wall and a top wall. A container supporting pedestal having a needle projecting upwardly therefrom is positioned within the container receiving enclosure. A pressurized fluid supply means is in communication with the needle. An adjustable container retaining member is disposed within the container receiving enclosure in spaced overlying relationship with respect to the container supporting pedestal. Pressure control means are interposed between the pressurized fluid supply means and the needle.A method of testing a sealed container which includes placing the sealed container within the container receiving enclosure, piercing the container by means of a generally upward projecting needle to establish sealed contact between the needle and the interior of the container.
    Type: Grant
    Filed: October 10, 1974
    Date of Patent: May 25, 1976
    Assignee: Aluminum Company of America
    Inventors: Wilburn C. Willis, William L. Denhart, Frank M. Kelly, Joseph A. Clements