Patents by Inventor Wendal I. Smith

Wendal I. 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).

  • Collapsible core
    Patent number: 4021180
    Abstract: Collapsible core assembly having retractable portion capable of producing plastic parts having an undercut. The core assembly comprises a segmented portion operably connected to an innercore pulling assembly whereby operation of the innercore pulling assembly first retracts the segmented core and thereafter pulls the complete core assembly out of the molded part.
    Type: Grant
    Filed: April 14, 1976
    Date of Patent: May 3, 1977
    Assignee: Standard Oil Company (Indiana)
    Inventor: Wendal I. Smith