Patents by Inventor Gary A. Douglass

Gary A. Douglass 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).

  • Method and apparatus for measuring closure forces and variances therein associated with reclosable thermoplastic zippered bags
    Patent number: 5154086
    Abstract: An apparatus and method for measuring the tactility of a zipper of a reclosable thermoplastic zippered bag of the type described in commonly-assigned U.S. Pat. No. 5,070,584, including an opposed pair of mechanical fingers defining a gap therebetween through which the zipper is made to pass, means associated with the opposed pair of mechanical fingers for continuously measuring the resistance of the male and female profiles to being interlocked by such fingers as the zipper passes through the gap defined between such fingers, and means for recording, graphing, displaying and/or analyzing these measurements.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: October 13, 1992
    Assignee: Dowbrands L.P.
    Inventors: Jose Porchia, Brian C. Dais, Arnold M. Bartz, Francis D. Biel, James C. Cummins, Gary A. Douglass, James R. Hendershot, Ralph L. McCartney, James R. Wigle