Heating and cooling system using ground air
Patent 4523519 Issued on June 18, 1985. Estimated Expiration Date: 
September 2, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 2, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1086031 2432354 2823429 3223018 3343474 Double-wall facade element for buildings having an overpressure ventilating or air conditioning installation Heated doors Patent #: 4163144 InventorApplicationNo. 06/528853 filed on 09/02/1983US Classes:454/185, HOLLOW PARTITION165/45, GEOGRAPHICAL454/196, MEANS COMBINED WITH WINDOW454/365Along roof ridgeExaminersPrimary: Joyce, HaroldAttorney, Agent or FirmInternational ClassesF24F 5/00 (20060101)F24D 11/00 (20060101) AbstractA system by which ground air may be used to cool the interior of a house or other building when outside air temperature is high and warm a house or other building when the outside temperatures is low by using air at substantially ground temperature which is circulated through a duct system by gravity or thermal siphon flow without requiring the use of fans, electrical energy, elaborate controls and the like. The system includes a wall duct system communicated with a gable duct system and discharge at its upper end and an air inlet below ground level such as at the bottom of a basement. The system includes a duct system extending through doors and window assemblies in the external wall of the house or building with the wall duct system being substantially continuous throughout the area of the walls to preclude air migration through the walls. | |
