Patents by Inventor John F. Berquist

John F. Berquist 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).

  • Bar code printer
    Patent number: 4884904
    Abstract: A thermal printhead fixed to a pivotal supporting frame is held in operative printing contact with a web of printing medium backed by a platen roller under the bias of a spring device engageable with the pivotal supporting frame for the printhead. The spring device is operatively located relative to the platen roller so that the spring bias exerted establishes proper frictional feeding engagement between the web and the roller which is power driven. The spring device, the pivotal supporting frame for the printhead and the platen roller are mounted by a common housing section.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: December 5, 1989
    Assignee: Cognitive Solutions, Inc.
    Inventor: John F. Berquist