Patents by Inventor Silvio U. Blaskovic

Silvio U. Blaskovic 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).

  • Forms feed tractor
    Patent number: 4226353
    Abstract: There is disclosed herein a forms feed tractor mechanism having a belt with pins and driving elements extending therethrough. The pins are adapted to engage perforated holes along the edge of a recorded medium. Driver means are provided for rotating the belt and pins and thereby rotate the engaged record medium. Also, there is provided a spring tensioner for maintaining tension on the belt. The tractor includes a door which is rotatably snapped fitted into the housing of the tractor and maintained above the plane of the record medium by an extension on the lower surface thereof.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: October 7, 1980
    Assignee: International Business Machines Corporation
    Inventors: Silvio U. Blaskovic, Robert W. Cornell