Patents by Inventor W. Jerry Williams

W. Jerry Williams 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 for producing a hollow molded article with a filling of foamed plastic thermal insulation, and the article produced thereby
    Patent number: 4668567
    Abstract: The molded shell of an article, while still warm from being molded, and while remaining within the mold or fixture in which it has been created, for instance by blow-molding of a parison of polyolefin plastic material into contact with the mold walls, is filled with a fluid, settable foaming plastic material, for instance polyurethane. This may be done by injecting the foaming mixture directly into the cavity of the shell. In this manner time, labor and materials are saved, and the resulting product is characterized by better adhesion of the foamed core to the internal wall surface of the shell.
    Type: Grant
    Filed: August 27, 1985
    Date of Patent: May 26, 1987
    Assignee: Omico Plastics, Inc.
    Inventor: W. Jerry Williams
  • Apparatus and method for producing molded hollow article with filling of foamed plastic thermal insulation, and article produced thereby
    Patent number: 4546899
    Abstract: The molded shell of an article, while still warm from being molded, and while remaining within the mold or fixture in which it has been created, for instance by blow-molding of a parison of polyolefin plastic material into contact with the mold walls, is filled with a fluid, settable foaming plastic material, for instance polyurethane. This may be done by injecting the foaming mixture directly into the cavity of the shell. In this manner time, labor and materials are saved, and the resulting product is characterized by better adhesion of the foamed core to the internal wall surface of the shell.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: October 15, 1985
    Assignee: Omico Plastics, Inc.
    Inventor: W. Jerry Williams