Patents by Inventor Carl E. Kass

Carl E. Kass 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).

  • Heating system shut-off system using detector and existing safety switch or fuel valve
    Patent number: 5189392
    Abstract: A safety apparatus for shutting off a unit having a manually operated power interruption switch upon detecting a predetermined condition. In addition, to power interruption a fluid fuel supply to a combustion unit having a manually operated interruption valve arranged in the line is also interrupted.
    Type: Grant
    Filed: June 24, 1991
    Date of Patent: February 23, 1993
    Inventors: Carl E. Kass, Arthur W. Little