Patents by Inventor John J. Pilewski

John J. Pilewski 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).

  • Method and apparatus for high precision lapping machines
    Patent number: 4209949
    Abstract: A method and apparatus is disclosed for high precision lapping. This high precision is accomplished by the lapping stroke between the lap and the workpiece always having a substantially constant predetermined stroke in one direction and an approximately constant predetermined stroke in the other direction. The approximately constant stroke is accomplished by sensing the contact force between the lap and the workpiece and stopping an engaging stroke therebetween when a predetermined contact force is reached and then starting a constant disengaging stroke. When the substantially constant predetermined disengaging stroke is completed, the engaging stroke begins.
    Type: Grant
    Filed: January 4, 1978
    Date of Patent: July 1, 1980
    Assignee: Staats & Staats, Inc.
    Inventors: Clyde Staats, John J. Pilewski