Patents by Inventor Donald W. Ferris

Donald W. Ferris 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).

  • Quick change true length collet chuck assembly
    Patent number: 6575477
    Abstract: A true length collet chuck assembly is adapted to receive and actuate a quick change, segmented collet having a flange extending radially outwardly from the outer surface of the collet adjacent a rear face of the collet. The collet chuck assembly comprises a chuck body having a longitudinally extending bore defined by an inwardly facing, cylindrical surface on the chuck body. The inwardly facing, cylindrical surface on the chuck body defines a circumferential groove for receiving the radially outwardly extending flange on the collet to thereby restrain the collet against axial movement relative to the chuck body. A collet closing sleeve, disposed within the chuck body and axially displaceable relative thereto, has an outwardly flaring interior surface adapted to engage an outwardly flaring surface on the collet.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: June 10, 2003
    Assignee: Advanced Tool Systems, Inc.
    Inventors: James A. Humphrey, Donald W. Ferris
  • Quick change true length collet chuck assembly
    Publication number: 20020145261
    Abstract: A true length collet chuck assembly is adapted to receive and actuate a quick change, segmented collet having a flange extending radially outwardly from the outer surface of the collet adjacent a rear face of the collet. The collet chuck assembly comprises a chuck body having a longitudinally extending bore defined by an inwardly facing, cylindrical surface on the chuck body. The inwardly facing, cylindrical surface on the chuck body defines a circumferential groove for receiving the radially outwardly extending flange on the collet to thereby restrain the collet against axial movement relative to the chuck body. A collet closing sleeve, disposed within the chuck body and axially displaceable relative thereto, has an outwardly flaring interior surface adapted to engage an outwardly flaring surface on the collet.
    Type: Application
    Filed: April 6, 2001
    Publication date: October 10, 2002
    Applicant: Advanced Tool Systems, Inc.
    Inventors: James A. Humphrey, Donald W. Ferris