Patents by Inventor Petrus J. P. Hovens

Petrus J. P. Hovens 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).

  • Slit exposure device
    Patent number: 4403853
    Abstract: A slit exposure device movable back and forth in a path parallel to a stationary original for projecting an image of the original in linear portions onto a moving photosensitive element in belt form has a lamp for illuminating the original, an optical system, at least two interconnected belt deflecting rollers and a drive for moving these rollers with the optical system along and parallel to the object plane. At least one of the deflecting rollers deflects the photosensitive element counterclockwise and at least one of them deflects it clockwise from its original direction of movement, and the optical system projects the image in linear portions onto the photosensitive element at a location within the path formed by and between the deflected portions of the photosensitive element.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: September 13, 1983
    Assignee: Oce-Nederland B.V.
    Inventors: Petrus J. P. Hovens, Adrianus H. Willemse