Patents by Inventor Carl R. Mapes

Carl R. Mapes 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).

  • Metal stud
    Patent number: 4324082
    Abstract: A metal stud, intended for use where the flanges on one side will be left exposed, having such exposed side flanges formed with an overlapped sheet metal portion, including an under flange and an over flange which are spaced apart to allow a cooling air flow therebetween, wherein the under flange includes means for providing a cooling flow of air or gases at the interface of the under flange and an adjacent gypsum board, which may be a rib in the under flange or a plurality of spaced apart holes in the under flange.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: April 13, 1982
    Assignee: National Gypsum Company
    Inventors: Edward J. Rutkowski, Carl R. Mapes, Steven D. Wing, Jack A. Dawdy