Patents by Inventor Willard Cummings

Willard Cummings 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 of making chuck assembly and collet
    Patent number: 4330923
    Abstract: A chuck assembly and collet for retaining an end mill tool against axial pullout. The collet includes a radially compressible body having a tapered outer surface, a central bore and a radial aperture extending from the outer surface into the central bore. The radial aperture, which includes larger and smaller diameter portions, has a movable pin mounted therein and adapted to extend into the bore to retain the tool. The pin has an undercut portion, with a spring or snap ring mounted around the pin in the undercut portion, said spring having a free diameter slightly larger than the larger diameter to provide a pressure fit when mounted therein.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: May 25, 1982
    Assignee: The Bendix Corporation
    Inventor: Willard Cummings
  • Chuck assembly and collet
    Patent number: 4197044
    Abstract: A chuck assembly and collet for retaining an end mill tool against axial pullout. The collet includes a radially compressible body having a tapered outer surface, a central bore and a radial aperture extending from the outer surface into the central bore. The radial aperture, which includes larger and smaller diameter portions, has a movable pin mounted therein and adapted to extend into the bore to retain the tool. The pin has an undercut portion, with a spring or snap ring mounted around the pin in the undercut portion, said spring having a free diameter slightly larger than the larger diameter to provide a pressure fit when mounted therein.
    Type: Grant
    Filed: January 9, 1979
    Date of Patent: April 8, 1980
    Assignee: The Bendix Corporation
    Inventor: Willard Cummings