Patents by Inventor Larry K. Ball

Larry K. Ball 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).

  • Butterfly valve apparatus and method
    Patent number: 4962783
    Abstract: A butterfly valve includes a duct defining a fluid flow path and a plate-like valve member pivotal in the duct to in one position open and close the latter. The valve member is pivotal to a second position spanning the duct and extending parallel to the flow path to allow fluid flow therein. Means are provided for altering the effective area distribution of the valve member about its pivot axis to effect opening and closing of the inventive valve in response to fluid pressure forces acting thereon.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: October 16, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Larry K. Ball, Marshall U. Hines