Furnace fan control
Patent 4684060 Issued on August 4, 1987. Estimated Expiration Date: 
May 23, 2006. 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.
May 23, 2006. 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 3726473 Heating and cooling efficiency control Adaptive temperature control system Thermostat with adaptive operating cycle Method and apparatus for controlling the operation of an indoor fan associated with an air conditioning unit Apparatus and method for controlling the temperature of a space Energy management system for chilled product vending machine Patent #: 4467617 InventorsAssigneeApplicationNo. 06/866553 filed on 05/23/1986US Classes:236/11, Air and fire control62/231TIME OR PROGRAM ACTUATORExaminersPrimary: Wayner, William E.Attorney, Agent or FirmInternational ClassF23N 5/20 (20060101)AbstractA furnace fan control for providing operation of the fan after the termination of the furnace burner in an adaptive manner to provide for longer fan operations after the burner turns OFF, as the burner ON time increases.Other References
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