Patents by Inventor Robert Tibbetts

Robert Tibbetts 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 extending contour gaskets
    Patent number: 5137679
    Abstract: A method of molding utilizes an apparatus (10) for molding a thin-wall plastic shell which includes a powder box (12) and a mold box (14). The powder box (12) is positioned to an operative position wherein an opening (18) in the powder box (12) is brought in proximity to the mold surface (20) of the mold. A bellows member (34) having a gasket (42) about the end thereof is extended from the opening (18) to perfect a sealed passageway between the opening (18) and the periphery (22) of the mold surface (20).
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: August 11, 1992
    Assignee: Davidson Textron Inc.
    Inventors: Robert Tibbetts, Stuart Kaiser
  • Apparatus for extending contour gaskets
    Patent number: 5127818
    Abstract: An apparatus (10) for molding a thin-wall plastic shell includes a powder box (12) and a mold box (14). The powder box 12) is positioned to an operative position wherein an opening (18) in the powder box (12) is brought in proximity to the mold surface (20) of the mold. A bellows member (34) having a gasket (42) about the end thereof is extended from the opening (18) to perfect a sealed passageway between the opening (18) and the periphery (22) of the mold surface (20).
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: July 7, 1992
    Assignee: Davidson Textron Inc.
    Inventors: Robert Tibbetts, Stuart Kaiser