Intelligent light fixture facilitating universal light bulb

Details Intelligent light fixture facilitating universal light bulb Intelligent light fixture facilitating universal light bulb

2008-10-28

2011-11-29

Chang, Daniel D (Department: 2819)

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Plural circuit elements

C315S293000, C315S246000

Reexamination Certificate

active

08067893

ABSTRACT:
An intelligent light fixture facilitates the use of a ‘universal’ light bulb having a wattage rating. A lamp dimmer circuit disposed within the fixture is in electrical communication between the AC line and a socket. A bulb test circuit within the fixture is operative to determine the maximum wattage of the bulb. A controller, also within the fixture includes a wattage select input. The controller is operative to determine the maximum wattage of the bulb using the bulb test circuit, compare the maximum wattage to the wattage select input and, if the maximum wattage is greater than the wattage select input, control the dimmer circuit to ensure that the power delivered to the bulb does not exceed the wattage select input. The bulb test circuit may determine the maximum wattage of the bulb by measuring the resistance of the bulb's filament or alternatively, by temporarily impressing line voltage across the bulb and measuring the current drawn by the bulb's filament. Alternative embodiments provide a wattage dial disposed on an adapter unit or directly on the threaded base of a bulb.

REFERENCES:
patent: 1172953 (1916-02-01), Dempster
patent: 1640434 (1927-08-01), Weston
patent: 3028525 (1962-04-01), Morton
patent: 3215891 (1965-11-01), Fritz et al.
patent: 3331013 (1967-07-01), Cunningham
patent: 3517259 (1970-06-01), Dotto
patent: 3781593 (1973-12-01), Rodriguez
patent: 3836814 (1974-09-01), Rodriquez
patent: 4438344 (1984-03-01), Albert et al.
patent: 5731663 (1998-03-01), Davis
patent: 5989070 (1999-11-01), Al-Turki et al.
patent: 6113433 (2000-09-01), Al-Turki et al.
patent: 6162100 (2000-12-01), Al-Turki et al.
patent: 7090390 (2006-08-01), Pazula

Affiliated with

Also associated with

Rating

Intelligent light fixture facilitating universal light bulb does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intelligent light fixture facilitating universal light bulb, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intelligent light fixture facilitating universal light bulb will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4285054