Patents by Inventor Lucen St. Denis

Lucen St. Denis 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).

  • Hemming machine and method
    Patent number: 5150508
    Abstract: This invention relates to a machine and a method for forming a unitary structure from a first steel panel having an upturned flange and a second steel panel having a flat edge portion. The machine is comprised of a support surface for receiving the two panels in a nested relation. The support surface, holding the nested panels, is moved to a pre-hem position. The support surface then presses the flange of the first panel against a pre-hem flange engaging member to bend the flange to approximately 45.degree. with respect to the plane of the first panel. The support surface moves the nested panels to a final hem position. The support surface then presses the flange against a final hem engaging member to bend the flange into full engagement with the edge portion of the second panel to form a unitary structure.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: September 29, 1992
    Assignee: E. R. St. Denis & Sons, Limited
    Inventor: Lucen St. Denis