Electric lamp and discharge devices: systems – With load device temperature modifier – Load device circuit controlled by the temperature modifying...
Patent
1986-03-31
1987-09-15
Dixon, Harold
Electric lamp and discharge devices: systems
With load device temperature modifier
Load device circuit controlled by the temperature modifying...
315177, 315309, 337 22, 362276, H01J 724
Patent
active
046942238
ABSTRACT:
A heat flow detector for protecting against overheating of a lamp fixture energized from a voltage source, even when a dimmer is used for operating the lamp fixture. The detector includes a temperature sensitive switch electrically coupled to the lamp fixture. The switch disconnects the lamp fixture from the voltage source in response to a predetermined temperature. A biasing heater is thermally coupled to the temperature sensitive switch for raising the temperature of the switch sufficiently to operate the switch upon overheating of the lamp. A regulating circuit maintains the required voltage across the heater even upon reduction of the voltage from the source through use of the dimmer. The heat flow detector is placed in the vicinity of the lamp fixture so as to be subject to the same heat flow environmental conditions as the lamp fixture whereby as the lamp fixture gets overheated, the resistor heated up will be sufficient to operate the switch.
REFERENCES:
patent: 1767582 (1930-06-01), Fisher
patent: 1830578 (1931-11-01), Vaughan
patent: 2089896 (1937-08-01), Journeaux
patent: 2159537 (1939-05-01), Stevens
patent: 2760117 (1956-08-01), VanRyan
patent: 4400673 (1983-08-01), Gilman
Dixon Harold
Leviton Manufacturing Company, Inc.
Sutton Paul J.
LandOfFree
Thermal sensor for a lighting fixture does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal sensor for a lighting fixture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal sensor for a lighting fixture will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1387781