Patents by Inventor James D. Calkins

James D. Calkins 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).

  • Width detector system
    Patent number: 4393313
    Abstract: Apparatus for continuously measuring the width of moving strip materials and visually displaying such measurements; the same utilizing a pair of motorized edge sensors for locating and following the strip edges relative to a fixed reference datum and signal generators for measuring the width of the material and energizing alarm and/or recording systems whenever the measured width exceeds predetermined tolerance limits.
    Type: Grant
    Filed: April 29, 1981
    Date of Patent: July 12, 1983
    Assignee: Binks Industries, Inc.
    Inventors: James D. Calkins, Eugene E. Bushong, Lee R. Schuck