Patents by Inventor David E. Worth

David E. Worth 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).

  • Manufacture of flat glass at controlled throughput rate
    Patent number: 4004900
    Abstract: The rate at which a continuous sheet of flat glass is manufactured by a float process is controlled by regulating the position of a tweel in a channel or canal used for delivering molten glass for forming in response to the temperature of the molten glass and in response to directly detected width, thickness and speed of the continuous sheet of glass being conveyed from the forming process.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: January 25, 1977
    Assignee: PPG Industries, Inc.
    Inventors: Joseph R. Staahl, Jr., Joseph M. Matesa, David E. Worth