Patents by Inventor Morti Hirsch

Morti Hirsch 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).

  • Overhead structural, fire extinguishing and ventilating system
    Patent number: 4012875
    Abstract: This disclosure teaches a structural, fire extinguishing and ventilating system for use in building construction. Parallel joists have tubular lower chords through which fire extinguishing water is circulated and from which a perforated ceiling depends to form an upper enclosure for a room. Ventilating air ducts are positioned between the joists so that the ventilating air passes over the tubular lower chords in noncontact heat exchange relationship with the fire extinguisher water and the air then passes downward through the perforated ceiling to the room.
    Type: Grant
    Filed: February 25, 1976
    Date of Patent: March 22, 1977
    Assignee: Active Fire Sprinkler Corporation
    Inventor: Morti Hirsch