Patents by Inventor Harold R. Berrey

Harold R. Berrey 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).

  • High accuracy vacuum belt and pinch roller media transport mechanism
    Patent number: 5197812
    Abstract: A media transport mechanism including a high accuracy vacuum belt used in conjunction with a pinch roller assembly. The media transport mechanism includes a vacuum belt supportably wrapped around two sprocket assemblies and a plenum and disposed in facing relation to a print head. The vacuum belt has two pinch roller assemblies disposed in spaced-apart relation across the front surface of the vacuum belt, with each pinch roller assembly including two pinch rollers which, in conjunction with the vacuum belt, grip and advance a sheet of media across the front surface of the vacuum belt during printing. The plenum provides a vacuum hold-down force for holding the media flat against the front surface of the vacuum belt.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: March 30, 1993
    Assignee: Dataproducts Corporation
    Inventors: A. Justine Worley, Harold R. Berrey