Patents by Inventor David F. Gillett

David F. Gillett 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 diaphragm valve
    Patent number: 5449141
    Abstract: The invention relates to a valve of the iris diaphragm type.The valve comprises first and second annular body members having respective first and second recesses therein and an annular recess between such first and second body members. A flexible valve closure sleeve is provided with first and second annular mounting flanges at opposite ends and an intermediate flange. The first and second mounting flanges are engaged respectively in the first and second recesses, and the intermediate flange disposed in the annular recess defined between the first and second body members so as to be angularly moveable relative thereto and relative to the first and second annular mounting flanges. Operating means are connected with the intermediate flange for moving the flange between closed and open positions corresponding to closed and open positions of the valve closure sleeve.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: September 12, 1995
    Assignee: Fuller Company
    Inventors: David F. Gillett, Anthony Goodwin, Keith V. Simpson