Patents Assigned to James C. Hays
  • Adjustable stem sprinkler drop
    Patent number: 4007877
    Abstract: An adjustable stem drop apparatus and method for a fire extinguishing sprinkler mounted on a pipe located above the ceiling of a building and arranged in such a manner that the position of the sprinkler can be adjusted from below the ceiling after the ceiling has been permanently installed.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: February 15, 1977
    Assignee: James C. Hays
    Inventors: Jimmy Jackson, William D. Roquemore