Patents by Inventor Ernst Peter Hess

Ernst Peter Hess 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: 3974906
    Abstract: A ribbon cartridge for a printer provides an unsupported length of ribbon between a pair of spaced guide means to provide for easy threading. In addition, continuous rotation of the ribbon is made possible by storing the ribbon as an endless loop in a random fashion in the principal cavity of the cartridge. A secondary cavity prevents an accidental loop from coming out of the cartridge which would otherwise result in slack in the unsupported length.
    Type: Grant
    Filed: February 25, 1972
    Date of Patent: August 17, 1976
    Assignee: Xerox Corporation
    Inventors: Sen Lin Lee, Ernst Peter Hess