Patents by Inventor Frederick S. Weiss

Frederick S. Weiss 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).

  • Patent number: 4932577
    Abstract: A friction feed media drive mechanism for a sign plotter includes a front idler roller and a back idler roller positioned under compression against a drive roller. The compression may be selectively applied by the user depending whether a friction feed or pin feed mode of operation is desired. Where the pin feed mode of operation is desired, the compression assembly is released and no compression is applied. The compression assembly includes a compression spring loaded member which fits through an opening in a housing and is selectively secured therein by a securing rod attached to a cam shaped knob. The front idler roller and back idler roller are both attached to a roller holding assembly, which has a groove therein adapted for fitting over the driving pins. The two idler rollers extend below the surface of the attaching assembly and may have a hard plastic sleeve on the ends thereof to reduce bending.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: June 12, 1990
    Inventor: Frederick S. Weiss