Patents Assigned to Entropy Controls, Inc.
  • Segmented panel curtain opening closure
    Patent number: 4304174
    Abstract: An improved opening closure system utilizing a plurality of curtains supported in a way to cover the opening with alternate embodiments having primary and secondary curtains acting as a thermal siphon and with fan units as a power air destratifier.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: December 8, 1981
    Assignee: Entropy Controls, Inc.
    Inventors: Jeffrey D. Hickson, Robert S. Dworkin