Apparatus for coupling the components of a heat pump system
Patent 4158383 Issued on June 19, 1979. Estimated Expiration Date: 
May 25, 1997. 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 25, 1997. 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 2969959 3167114 3318372 3537509 3871443 Heat pump conversion system for electric furnace Electric vehicle control analyzer Thermostat substitution circuit device Test apparatus Patent #: 4087046 InventorApplicationNo. 05/800335 filed on 05/25/1977US Classes:165/11.1, WITH ALARM, INDICATOR, SIGNAL, REGISTER, RECORDER, TEST OR INSPECTION MEANS165/240, Heat pump and supplemental heat source165/270, Time delay361/166, Plural relays or solenoids sequentially operated62/126, Operatively correlated with automatic control62/160Reversible cycle machineExaminersPrimary: Davis, Albert W. Jr.Assistant: Focarino, M. A. Attorney, Agent or FirmInternational ClassesG05D 23/19 (20060101)H02H 9/00 (20060101) F24F 11/00 (20060101) H01H 47/00 (20060101) AbstractThis invention discloses an apparatus for coupling and controlling the overall operation of the operable components of a heat pump system. All of the components of the system are coupled through a single master switching relay which provides a central location from which all of the operations of the system can be initiated and tested. Time delay relays are provided to stagger the start of the secondary heating units of the system to avoid an electrical power surge. | |
