Patents by Inventor Richard D. Kilgour

Richard D. Kilgour 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 injection moulding an undercut formation on a circular body and a closure assembly including a coupling element
    Patent number: 5693036
    Abstract: A method of injection moulding an undercut formation on a circular body in which the formation is moulded in a series of arcuate sections alternating with spaces. According to the method, the moulding core, which produces the formation, is extracted by firstly relatively rotating the body and the core so that the body is expanded radially and then ejecting the body off the core. The method is applicable to the manufacture of closure members and coupling elements.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: December 2, 1997
    Assignee: E. R. Squibb & Sons Inc.
    Inventor: Richard D. Kilgour