Head lamps control system for use on vehicles
Patent 4558260 Issued on December 10, 1985. Estimated Expiration Date: 
May 3, 2004. 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 3, 2004. 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 3391302 3818267 InventorAssigneeApplicationNo. 06/606686 filed on 05/03/1984US Classes:315/82, Head light systems307/10.8, Lighting circuits315/149, WITH RADIANT ENERGY SENSITIVE CONTROL MEANS315/77VehicleExaminersPrimary: Dixon, Harold A.Attorney, Agent or FirmInternational ClassB60Q 1/14 (20060101)Foreign Application Priority Data1983-05-04 JPAbstractA head lamps control system for use on a vehicle for turning on and off the head lamps of the vehicle according to the brightness of the outside of the vehicle, in which a flip flop circuit is set upon closing of an ignition switch and in this set condition it receives power from a DC power source of the vehicle via a fuse to make on-off control for the head lamps in accordance with a signal provided from a photosensor which detects the outside brightness. To the above fuse is connected a load other than this system, and in the event the above fuse opens due to some trouble of such load, power can be fed to this system from a power supply path via the ignition switch, to prevent the head lamps from suddenly going off. | |
