Patents by Inventor Robert L. LaFontaine

Robert L. LaFontaine 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).

  • Patent number: 6389769
    Abstract: A door and method for fabrication of unitary six panel steel doors wherein frames members (stiles and rails or headers) are fabricated by forming metal stock into a cross-sectional channel configuration, cutting and swaging the channels into predetermined lengths. The stiles and rails of the frame members are swaged to provide frictional interconnection at the corners thereof upon assembly of the frame members (stiles and rails) into a rectangular frame configuration. Assembly of the frame is accomplished in a shuttle having two assembly jigs. Upon assembly, each frame is moved by the shuttle into a molding press wherein a panel of foam is molded within the frame. The shuttle moves back and forth through the molding press in a manner which provides for removal of a completed panel and assembly of an additional frame from one jig of the shuttle while the molding operation is accomplished within the molding press upon a frame retained within the other jig of the shuttle.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: May 21, 2002
    Assignee: EFP Corporation
    Inventors: Matthew M. McKinney, Robert L. LaFontaine, James D. Surber