Patents by Inventor Joachim Pietruska

Joachim Pietruska 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: 4540166
    Abstract: An automatic feeder for a photographic copying machine includes a housing and a plate for supporting a stack of originals which are consecutively conveyed towards a transparent exposure plate positioned on the copying machine. The feeder is provided with adjustable tappet rollers mounted against the exposure plate to receive a front edge of an original moved along the exposure plate, without damaging the front edge. The plate for supporting the stack of originals includes adjustable stops for adjusting the plate to differing formats of the originals being processed. An adjusting lever connected to the adjustable stops for adjusting the latter is operatively connected to an adjustment device for adjusting the position of tappet rollers along the exposure plate. Pivotable transport rollers are provided to hold the original against the exposure plate. The housing of the feeder is pivotable relative to the housing of the copying machine between an open and closed position.
    Type: Grant
    Filed: May 24, 1983
    Date of Patent: September 10, 1985
    Assignee: AGFA-Gevaert AG
    Inventors: Hans A. Massengeil, Robert Overmeer, Joachim Pietruska, Jean J. Caufriez
  • Patent number: 3971912
    Abstract: In a copying machine a toner-image-bearing copy carrier moves in a predetermined direction along a predetermined path. A fixing arrangement fixes toner images by fusing the toner thereof. The fixing arrangement includes a heating winding having a plurality of turns and a holding arrangement for holding the heating winding. The holding arrangement comprises a plurality of discrete holding units each engaging and holding at least one respective one of the turns of the winding. The discrete holding units are arranged in two spaced groups. The turns of the heating winding extend in a plurality of stretches from one group of holding units to the other in the direction of the transport path and serve to heat the toner on copy carriers passing therealong.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: July 27, 1976
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Wilm Kruger, Gunther Schatka, Joachim Pietruska