Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
198 words
A fluorescent lampholder fitting comprising: a fluorescent lamp of preheat type having a first end provided with a starting filament including a first and second terminal wire, and a second end provided with a starting filament including a first and second terminal wire; a male screw base electrical connector adapted to fit a three-way socket lampholder, said screw base extending from a generally hollow housing which supports the lamp in at least two places and said screw base being provided with three electrical input connections; a screw shell connection, a center connection and an intermediate ring connection; a lamp starter connected between the first terminal wire of the first lamp end filament and the first terminal wire of the second lamp end filament; a conductor connecting the screw shell connection of the male screw base to the second terminal wire of the first lamp end filament; a first ballast means connected between the center connection of the male screw base and the second terminal wire of the second lamp end filament; and a second ballast means connected between the intermediate ring connection of the male screw base and the second terminal wire of the second lamp end filament.
Claim 2
Dependent Claim
198 words
A fluorescent lampholder fitting comprising: a fluorescent lamp of preheat type having a first end provided with a starting filament including a first and second terminal wire, and a second end provided with a starting filament including a first and second terminal wire; a male screw base electrical connector adapted to fit a three-way socket lampholder, said screw base extending from a generally hollow housing which supports the lamp in at least two places and said screw base being provided with three electrical input connections; a screw shell connection, a center connection and an intermediate ring connection; a lamp starter connected between the first terminal wire of the first lamp end filament and the first terminal wire of the second lamp end filament; a conductor connecting the screw shell connection of the male screw base to the second terminal wire of the first lamp end filament; a first ballast means connected between the center connection of the male screw base and the second terminal wire of the second lamp end filament; and a second ballast means connected between the intermediate ring connection of the male screw base and the second terminal wire of the second lamp end filament.
Claim 3
Dependent Claim
64 words
A fluorescent lampholder fitting according to claim 1 in which the fluorescent lamp has a nominal rating of from 15 to 25 watts, the first ballast means has a current of no more than 250 miliamperes at 118 volts AC and 60 Hz, and the second ballast means has a current of no less than 250 milliamperes at 118 volts AC and 60 Hz.
Claim 4
Dependent Claim
31 words
A fluorescent lampholder fitting according to claim 1 in which the fluorescent lamp is circular and has a diameter of no less than 6 inches and no more than 12 inches.
Claim 5
Dependent Claim
42 words
A fluorescent lampholder fitting according to claim 1 in which the ballast means are core-and-coil inductors and the core of at least one of the inductors is disposed no more than one half inch from the glass surface of the fluorescent lamp.
Claim 6
Dependent Claim
34 words
A fluorescent lampholder fitting according to claim 1 in which the ballast means are core-and-coil inductors of substantially similar inductance, and at least one of the inductors in connected in series with a resistor.
Claim 7
Dependent Claim
32 words
A fluorescent lampholder fitting according to claim 1 in which the ballast means are core-and-coil inductors and one of the inductors has an impedance at least 10% greater than the other inductor.
Claim 8
Dependent Claim
65 words
A fluorescent lampholder fitting according to claim 2 in which the lamp is rated at a nominal 22 watts, the first ballast means has a current of 200±50 milliamperes, the second ballast means has a current of 300±50 milliamperes and the two ballasts operating in parallel have a current of 500±100 milliamperes when operating on a supply of nominally 118 volts AC at 60 Hertz.
Claim 9
Dependent Claim
29 words
A fluorescent lampholder fitting according to claim 1 in which the first and second ballast means comprise two electrically separate inductor coil windings sharing a common magnetically permeable core.