Patents by Inventor Harlan J. Schmidt

Harlan J. Schmidt 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).

  • Live center adapter assembly for machine tools
    Patent number: 5373760
    Abstract: A live center adapter assembly is made up of an elongated housing, a center adapter inserted into the end of the housing with a recess in the adapter having a rearwardly tapered inner wall for insertion of a center therein. Axially spaced needle bearings support the adapter and center for rotation within the housing, and a bore through one end of the housing permits insertion either of a punch for displacing the center from the adapter or a crank for the purpose of manually rotating the adapter and center.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: December 20, 1994
    Inventors: Harlan J. Schmidt, Leon E. Schmidt