Patents by Inventor Harmon Lee Davis

Harmon Lee 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).

  • Iris valve for control of bulk solids
    Patent number: 7021604
    Abstract: An iris valve for controlling the flow of bulk solid materials includes a flexible cylindrical sleeve, a control ring, and a polymeric isolator disc, all sandwiched between upper and lower body members. Rotating the control ring twists the flexible sleeve in an iris pattern to close an opening through the valve. Clamp bands attached to the upper body member and control ring include a machined helical pattern to securely grip the ends of the flexible sleeve, and a threaded handle locks the control ring in place against the body members.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 4, 2006
    Assignee: Salina Vortex Corporation
    Inventors: Shawn Michael Werner, Harmon Lee Davis, Monty Richard Leach