Patents by Inventor Lambertus A. Pothast

Lambertus A. Pothast 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).

  • Image-forming apparatus
    Patent number: 4711562
    Abstract: The present invention provides an apparatus for forming images on a substrate, using a belt-like medium which is moved past a number of precessing stations. The apparatus has at least two sections in which the belt-like medium can be driven at different speeds by different drive rollers at the same time. A buffer unit between the two sections compensates for the belt length shortage and/or surplus arising from the speed difference. The buffer unit consists of two parallel freely rotatable rollers secured to the ends of a rotatable frame.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: December 8, 1987
    Assignee: Oce-Nederland B.V.
    Inventors: Lambertus A. Pothast, Johannes P. Grootentraast, Joannes F. J. Verdonschot