Patents by Inventor Charles W. Luedtke

Charles W. Luedtke 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: 5048257
    Abstract: A method of constructing multiple story buildings and particularly detention structures as disclosed in which the framing members are lightweight steel channel members which are generally similar and in certain applications, interchangeable. The walls and floors of the building are framed with the channel members and lath sheathing is applied thereto for receiving cementitious fill therebetween. A unique diagonal tension strap system is used whereby diagonal straps are permanently attached at their lower end and tensioned at their upper end with adjustable fasteners before being permanently fastened at the upper end. The system provides for a more rapid and inexpensive construction schedule over conventional construction and affords high resistance to fire and to penetration of the filled walls.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: September 17, 1991
    Inventor: Charles W. Luedtke
  • Patent number: 4918897
    Abstract: A method of constructing multiple story buildings and particularly detention structures as disclosed in which the framing members are lightweight steel channel members which are generally similar and in certain applications, interchangeable. The walls and floors of the building are framed with the channel members and lath sheathing is applied thereto for receiving cementitious fill therebetween. A unique diagonal tension strap system is used whereby diagonal straps are permanently attached at their lower end and tensioned at their upper end with adjustable fasteners before being permanently fastended at the upper end. The system provides for a more rapid and inexpensive construction schedule over conventional construction and affords high resistance to fire and to penetration of the filled walls.
    Type: Grant
    Filed: October 6, 1987
    Date of Patent: April 24, 1990
    Inventor: Charles W. Luedtke