Patents Assigned to Nippon Flute, Co.
  • Patent number: 4693300
    Abstract: A preferred embodiment of the invention comprises a sprinklerless snow control system for reducing the buildup of snow upon an exterior surface such as a roadway, parking lot, roof structure or the like including a water lift well extending beneath the surface of the earth and positioned adjacent to an exterior surface to be protected from the buildup of snow. A pump is positioned wiithin the water lift well to raise relatively warm subsurface water having a temperature greater than freezing from the earth and delivering the relatively warm water into a conduit heat exchange system positioned beneath an exterior surface to be protected from snow buildup. At least one recharging well is positioned adjacent to the exterior surface to be protected and receives water from the conduit system positioned beneath the surface to be protected for permitting the water to re-enter the ground to be recharged with solar and/or geothermal heat stored within the ground.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: September 15, 1987
    Assignee: Nippon Flute, Co.
    Inventor: Hideo Adachi