Patents by Inventor Michael Woolstrum

Michael Woolstrum 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).

  • Self-tensioning membrane touch screen
    Patent number: 5838309
    Abstract: A digitizer including a support structure defining a digitizer area and a spacer element; a tensioned membrane disposed in spaced relationship to the support structure on the spacer element; and a peripheral flexible member extending from the support structure and including at least two independently flexible sections attached to the membrane and pretensioned counter to the tension of the membrane for deflecting and maintaining tension on the membrane to sustain the spaced relationship with the membrane relative to the structure.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: November 17, 1998
    Assignee: MicroTouch Systems, Inc.
    Inventors: Stephen Richard Robsky, Bernard O. Geaghan, Stephen Atwood, Michael Woolstrum