Patents by Inventor Martin Kollegger

Martin Kollegger 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).

  • Tool for center-punching and scribing workpieces
    Patent number: 4823468
    Abstract: A tool which has spacer sleeves displaceable on a center punch and hollow shafts are adjacent to one another is intended for rapidly and precisely finding the center of holes and the longitudinal center of slots and channels, so that center marks and linear scribes can be made. The spacer sleeves and the hollow shafts have different diameters, and the hollow shafts are inserted one into the other in telescopic form. When a hollow shaft is fittingly inserted into hole (5) or slot (5) the center of the former or the longitudinal center of the latter can reliably be found by the center punch for making center marks or linear scribes in the slots. The tool can also be used for producing center marks on shafts and pins.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: April 25, 1989
    Inventor: Martin Kollegger