Patents by Inventor Egbert Kuhnert

Egbert Kuhnert 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: 5186453
    Abstract: An intermediate film storage device for a section of photographic material of limited length comprises feed rolls, exit rolls, intermediate rolls which separate a first buffer from a second buffer, and a guiding device which guides the section of film from the feed rolls to the intermediate rolls. Such an intermediate film storage device serves to equalize different operating speeds of stations for processing photographic material. In so doing, the activity of the processing stations connected in series ahead of the intermediate film storage device should have to be interrupted only for a short time as the intermediate film storage device is being emptied. The intermediate rolls wind the section of film into the first buffer, and rewind it into the second buffer in the opposite direction of motion and at a higher speed, the motion of the section of film in the second buffer being controlled by an arrangement of buffer rolls.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: February 16, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Egbert Kuhnert