Patents by Inventor Theodore T. Evangelo

Theodore T. Evangelo 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).

  • Flexible rotor valve seal and ganged rotor valve incorporating same
    Patent number: 6308739
    Abstract: The present seal (10) is a disc of a rigid but deformable plastic, the top surface of which is cylindrical, and the bottom of which has a circular groove (12) containing a flexible sealing mechanism (15). This seal is suited for use in a ganged rotor valve (22) having two or more levels of independent fluid passageways through the rotor along the length thereof. Each level will usually have two independent L-shaped passageways (34, 35). The seal (10) of this invention fits into the rotor about each of the ends of the passageways (34, 35) to seal the passageway between the rotor and the valve body (22).
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: October 30, 2001
    Assignee: Quality Controls, Inc.
    Inventors: David J. Barbuto, Theodore T. Evangelo, James B. Horman, Jr.