Patents by Inventor Willis D. Smith

Willis D. Smith 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).

  • Head for slitter-corrugator
    Patent number: 4285684
    Abstract: A ring-like head for a slitter-corrugator having an interiorly located spring-pressed pad for pressure contact with an air shaft to preclude inadvertent side shifting of the head at set-up time. The pad has a chamfered peripheral edge for ready movement over edge portions on the shaft.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: August 25, 1981
    Assignee: Tidland Corporation
    Inventor: Willis D. Smith
  • Extrusion preparation apparatus
    Patent number: 3956952
    Abstract: Multiflanged extrusion preparation apparatus including means by which multiflanged elongated extrusions are aligningly fed to punch press operated dies which notch, trim, and otherwise prepare the extrusions for use in assembling and installing of fiberboard air handling ducts.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: May 18, 1976
    Inventors: Robert J. Goettel, Richard J. Goettel, Willis D. Smith
  • Extrusion preparation apparatus
    Patent number: 3938413
    Abstract: Multiflanged extrusion preparation apparatus including means by which multiflanged elongated extrusions are aligningly fed to punch press operated dies which notch, trim, and otherwise prepare the extrusions for use in assembling and installing of fiberboard air handling ducts.
    Type: Grant
    Filed: August 12, 1974
    Date of Patent: February 17, 1976
    Inventors: Robert J. Goettel, Richard J. Goettel, Willis D. Smith