Patents Assigned to Robert F. Vary
  • Energy saving device for habitable building enclosures having a heat changing system
    Patent number: 4108238
    Abstract: A uni-directional valve arrangement placed in a predetermined location between a habitable enclosure and a heating or cooling system which is exposed to outdoor temperatures prevents air of undesirable temperature in the system from passing into the enclosure by gravity flow.
    Type: Grant
    Filed: August 24, 1976
    Date of Patent: August 22, 1978
    Assignees: Robert F. Vary, BVM Ltd.
    Inventors: Robert F. Vary, Anthony C. Mamo