Patents by Inventor David Bruce Tornquist

David Bruce Tornquist 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).

  • Publication number: 20120234408
    Abstract: A split flapper check valve includes one or more additional bushing/bearing surface areas for controlling check valve flapper position along the axis of the hinge pin. This is accomplished by adding one or more grounded bushings between the flappers. The one or more grounded bushings is/are non-rotationally coupled to the hinge pin, and thus grounded to the check valve housing, so that the flappers can bear against this additional surface. The additional bearing area has the effect of increasing the axial bearing surface area according to the number of additional ground lugs that are used, without increasing the diameter of the flapper lugs.
    Type: Application
    Filed: January 24, 2012
    Publication date: September 20, 2012
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: David Bruce Tornquist, Stephan Cronenberg, Kelly Howell, Justin A. Tanner, Laura Tanner