Forced air heat exchanging system with variable fan speed control
Patent 5533352 Issued on July 9, 1996. Estimated Expiration Date: 
September 2, 2014. 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, 2014. 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 3293876 3415071 Heat pump system compressor fault detector Thermostatic expansion valve with electronic controller Environmental control system Patent #: 5255529 Inventors
AssigneeApplicationNo. 300799 filed on 09/02/1994US Classes:62/180, External fluid and refrigeration producer62/184, By refrigerant62/186Air controller or directorExaminersPrimary: Tanner, Harry B.Attorney, Agent or FirmInternational ClassF25D 017/06AbstractLiquid refrigerant temperature, measured by a sensor adjacent the flow control device, provides multiple diverse pieces of information which are used to control the indoor fan speed. liquid refrigerant temperature is used as an indication of outdoor air temperature and is also used as an indication of whether the compressor is operational or not. | |
