Patents by Inventor Albert Kenkel

Albert Kenkel 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).

  • Replacement windows with preformed corners
    Patent number: 4555869
    Abstract: A replacement window is formed from extruded frame members connected by preformed corners in a manner which eliminates punch press operations typically used to form replacement windows. Preformed corner sections connect extruded horizontal and vertical frame members to form window sashes. Different preformed corners are used to connect extruded horizontal and vertical frame members to form a window frame. The preformed corners are all L-shaped with male members adapted to fit within hollow portions of the horizontal and vertical extruded members. The preformed corners used in the window sashes include any latch mechanism or guidepins required for the sash.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: December 3, 1985
    Inventor: Albert Kenkel