Energy saving flourescent lamp controller
Patent 5252894 Issued on October 12, 1993. Estimated Expiration Date: 
April 2, 2012. 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.
April 2, 2012. 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 ReferencesElectrical lighting controller Patent #: 4434388 InventorsAssigneeApplicationNo. 862455 filed on 04/02/1992US Classes:315/307, Automatic regulation315/297Automatic regulationExaminersPrimary: Mottola, Steven J.Attorney, Agent or FirmInternational ClassH05B 041/36AbstractAn energy saving fluorescent lamp controller includes a current sensor together with a controlled circuit producing a timer signal in response to increased current drawn by a fluorescent lighting system. The timer responds to the control signal by producing a fixed duration operation signal which is applied to a switching system within the power coupling to the fluorescent lamp array. A pair of alternative power coupling networks are utilized to alternatively operate the fluorescent lamps at either of two different voltages in response to the control circuit and switching system. Audible and visual indicating alarms are utilized to alert the operator to the operating state of the system. | |
