Patents by Inventor John D. Strodtman

John D. Strodtman 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).

  • Holding apparatus with improved retention ability and method of holding a tool
    Patent number: 6508475
    Abstract: A tool holding apparatus includes a spindle and a collet nut engaged with a spindle wherein a recess is defined between the spindle and the collet nut. A collet is disposed in the recess and includes a first tapered portion and a second tapered portion spaced from the first tapered portion, wherein the first and second tapered portions form substantially equal angles with respect to a longitudinal center line of the collet.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: January 21, 2003
    Assignee: Hudson Precision Products Co.
    Inventors: John D. Strodtman, Peter J. Wrenn