Patents Assigned to Dunkirk Radiator Corp.
  • High-efficiency heating unit
    Patent number: 4989781
    Abstract: A forced hot-water heating system in which sensible and latent heat remaining in flue gases after contact with a primary heat exchanger is recycled into incoming cold air by a second heat exchanger. The heater, humidified intake air is then directed to a fuel burner, and reduces the amount of fuel necessary to achieve a given amount of heat exchange at the primary heat exchanger at normal operating return-water temperatures.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: February 5, 1991
    Assignees: H. B. Smith Co., Dunkirk Radiator Corp.
    Inventors: Eric C. Guyer, Martin K. Gollin