Patents by Inventor Ludwig Wenzlow-Lukasch

Ludwig Wenzlow-Lukasch 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).

  • Cement board having reinforced edges
    Patent number: 5221386
    Abstract: A cement board having bare surfaces and a woven mesh of reinforcing fibers underlying the top, bottom, and longitudinal edge surfaces is made continuously on an improved apparatus which comprises a pair of edger rails which slidably rest on a conveyor belt and define the path of the cement board being made on the conveyor belt and a means for folding and pressing outer margins of the bottom mesh into the edge surfaces and the top surface.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: June 22, 1993
    Assignee: United States Gypsum Company
    Inventors: Robert P. Ensminger, Robert E. McCleary, Ludwig Wenzlow-Lukasch
  • Cement board having reinforced edges
    Patent number: 4916004
    Abstract: A cement board having bare surfaces and a mesh of reinforcing fibers underlying the top, bottom, and longitudinal edge surfaces is made continuously on an improved apparatus which comprises a pair of edger rails which slidably rest on a conveyor belt and define the path of the cement board being made on the conveyor belt and a means for folding and pressing outer margins of the bottom mesh into the edge surfaces and the top surface.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: April 10, 1990
    Assignee: United States Gypsum Company
    Inventors: Robert P. Ensminger, Robert E. McCleary, Ludwig Wenzlow-Lukasch