Patent US3611432A successfully refreshed from Google Patents.
US3611432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined operating circuit for gaseous discharge and incandescent lamps
Assignee: General Electric Co
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Filing: 1969-06-02
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Granted: 1971-10-05
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Expires: 1989-06-02
Abstract
Abstract Ballast circuit for a gaseous discharge lamp is combined with an incandescent lamp circuit and relay for turning the incandescent lamp on when the gaseous discharge lamp is extinguished.
Inventors
- 👤 Robert E Babcock
- 👤 Charlie B Turner
- 👤 Howard T Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:51
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/46
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, and actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, said actuating means comprising relay means having a coil connected across said impedance means and switch contacts connected in series with said incandescent lamp, said switch contacts being open when said relay coil is energized and closed when said relay coil is deenergized.
Claim 2
Dependent Claim
123 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, and actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, said actuating means comprising relay means having a coil connected across said impedance means and switch contacts connected in series with said incandescent lamp, said switch contacts being open when said relay coil is energized and closed when said relay coil is deenergized.
Claim 3
Dependent Claim
14 words
Lighting system as defined in claim 1, said impedance means comprising an induction coil.
Claim 4
Dependent Claim
40 words
Lighting system as defined in claim 1, said ballast means comprising a transformer having primary and secondary windings, said discharge lamp being connected to said secondary winding, said impedance means comprising a capacitor connected in series with said secondary winding.
Claim 5
Dependent Claim
121 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, and actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, said actuating means comprising controlled semiconductor switch means in series with said incandescent lamp, and triggering means connected across said gaseous discharge lamp and to said semiconductor switch means for rendering the latter means conductive when said discharge lamp ceases operation.
Claim 6
Dependent Claim
121 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, and actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, said actuating means comprising controlled semiconductor switch means in series with said incandescent lamp, and triggering means connected across said gaseous discharge lamp and to said semiconductor switch means for rendering the latter means conductive when said discharge lamp ceases operation.
Claim 7
Dependent Claim
14 words
Lighting system as defined in claim 4, said triggering means comprising voltage-sensitive switch means.
Claim 8
Dependent Claim
153 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, said actuating means comprising controlled semiconductor switch means in series with said incandescent lamp, and triggering means connected across said gaseous discharge lamp anD to said semiconductor switch means for rendering the latter means conductive when said discharge lamp ceases operation, said triggering means comprising voltage-sensitive switch means, said controlled semiconductor switch means comprising a triac, said voltage-sensitive switch means comprising a diac, and a semiconductor voltage-clamping device connected in series with said diac.
Claim 9
Dependent Claim
153 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, said actuating means comprising controlled semiconductor switch means in series with said incandescent lamp, and triggering means connected across said gaseous discharge lamp anD to said semiconductor switch means for rendering the latter means conductive when said discharge lamp ceases operation, said triggering means comprising voltage-sensitive switch means, said controlled semiconductor switch means comprising a triac, said voltage-sensitive switch means comprising a diac, and a semiconductor voltage-clamping device connected in series with said diac.
Claim 10
Dependent Claim
106 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, and time delay means connected to said actuating means for delaying turning off of said incandescent lamp for a predetermined period after reignition of said discharge lamp.
Claim 11
Dependent Claim
106 words
Lighting system comprising, in combination, a source of alternating current, a gaseous discharge lamp connected to said source, ballast means connected to said source including impedance means connected in series with said gaseous discharge lamp, an incandescent lamp connected to said source, actuating means connected to said ballast means and said incandescent lamp for rendering said incandescent lamp inoperative during operation of said discharge lamp and for automatically rendering said incandescent lamp operative when said discharge lamp ceases operation, and time delay means connected to said actuating means for delaying turning off of said incandescent lamp for a predetermined period after reignition of said discharge lamp.
Claim 12
Dependent Claim
69 words
Lighting system as defined in claim 7, said actuating means comprising relay means having a coil connected across said impedance means and switch contacts connected in series with said incandescent lamp, said switch contacts being open when said relay coil is energized and closed when said relay coil is deenergized, said time delay means comprising temperature sensitive resistor means having a positive temperature coefficient connected across said relay coil.
Claim 13
Dependent Claim
115 words
Lighting system as defined in claim 7, said actuating means comprising relay means having a coil connected across said impedance means and switch contacts connected in series with said incandescent lamp, said switch contacts being open when said relay coil is energized and closed when said relay coil is deenergized, said time delay means comprising heating resistance means and relay contact means actuated by said relay coil connected in series across said incandescent lamp, and thermal switch means connected across said first-mentioned relay switch contacts and arranged in thermal contact with said heating resistance means, said relay contact means being open when said relay coil is energized and said thermal switch means being normally open.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |