Patent US3582709A successfully refreshed from Google Patents.
US3582709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural flourescent lamp starting circuit using an unignited lamp as ballast and a flux leakage transformer as to obtain suitable control voltages
Assignee: Individual
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Filing: 1968-09-09
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Granted: 1971-06-01
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Expires: 1988-09-09
Abstract
Abstract A starting system for gaseous discharge devices, in which a transformer is used, comprising a magnetic core having two sections, a plurality of primary windings wound about one section, and a plurality of secondary windings, one portion wound about the one section commonly with the primary windings, and another portion wound about the other section, with suitable connections of the secondary windings to the discharge devices. The split secondary windings on different sections of the core, acts as a transformer and ballast choke.
Inventors
- 👤 Shungo Furui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:41
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/18
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
307 words
In combination: 1. a pair of fluorescent lamps: 2. a first high impedance means connected in shunt circuit across one of said pair of fluorescent lamps; 3. a second impedance means comprising a capacitor and a high resistance connected in shunt circuit across said capacitor; 4. a voltage source; 5. a transformer comprising a. closed magnetic core having four interconnected branches, b. a pair of primary windings wound about a first pair of said branches, c. two pairs of secondary windings, one of said two pairs wound about said first pair of said branches commonly with said primary windings, and the other of said two pairs wound about the other pair of said branches, said first pair having a number of turns comprising from 10 percent to 80 percent of the total number of turns of said two pairs of secondary windings, and, d. flux leakage means disposed between said first pair anD said second pair of said branches; 6. means for serially connecting said primary windings to each other; 7. switch means for connecting said series connected primary winding to said voltage source; 8. means for serially connecting said secondary windings to each other; 9. and means for connecting in series circuit said serially connected secondary windings, said serially connected fluorescent lamps and said second impedance, whereby operation of said switch means causes energization of said primary windings and generation of voltage in said secondary windings thereby to place voltage across both of said fluorescent lamps, with said first impedance means shunting substantially all of said voltage to the other of said pair of fluorescent lamps, thereby to cause ignition thereof, thereafter substantially of said voltage is placed across said one of said pair of fluorescent lamps thereby to cause ignition thereof, said leakage means thereupon causing lowering of voltage across both of said fluorescent lamps.
Claim 2
Dependent Claim
307 words
In combination: 1. a pair of fluorescent lamps: 2. a first high impedance means connected in shunt circuit across one of said pair of fluorescent lamps; 3. a second impedance means comprising a capacitor and a high resistance connected in shunt circuit across said capacitor; 4. a voltage source; 5. a transformer comprising a. closed magnetic core having four interconnected branches, b. a pair of primary windings wound about a first pair of said branches, c. two pairs of secondary windings, one of said two pairs wound about said first pair of said branches commonly with said primary windings, and the other of said two pairs wound about the other pair of said branches, said first pair having a number of turns comprising from 10 percent to 80 percent of the total number of turns of said two pairs of secondary windings, and, d. flux leakage means disposed between said first pair anD said second pair of said branches; 6. means for serially connecting said primary windings to each other; 7. switch means for connecting said series connected primary winding to said voltage source; 8. means for serially connecting said secondary windings to each other; 9. and means for connecting in series circuit said serially connected secondary windings, said serially connected fluorescent lamps and said second impedance, whereby operation of said switch means causes energization of said primary windings and generation of voltage in said secondary windings thereby to place voltage across both of said fluorescent lamps, with said first impedance means shunting substantially all of said voltage to the other of said pair of fluorescent lamps, thereby to cause ignition thereof, thereafter substantially of said voltage is placed across said one of said pair of fluorescent lamps thereby to cause ignition thereof, said leakage means thereupon causing lowering of voltage across both of said fluorescent lamps.
Claim 3
Dependent Claim
17 words
a first high impedance means connected in shunt circuit across one of said pair of fluorescent lamps;
Claim 4
Dependent Claim
17 words
a first high impedance means connected in shunt circuit across one of said pair of fluorescent lamps;
Claim 5
Dependent Claim
28 words
The combination of claim 1, wherein said fluorescent lamps comprise preheated-type fluorescent lamps, and a flow starter switch is connected in shunt circuit across each of said lamps.
Claim 6
Dependent Claim
44 words
The combination of claim 1, wherein said fluorescent lamps comprise rapid start-type fluorescent lamps, each having heating elements, and wherein said transformer has a plurality of third winding wound on said magnetic core, and means for connecting said third windings to said heating elements.
Claim 7
Dependent Claim
18 words
a second impedance means comprising a capacitor and a high resistance connected in shunt circuit across said capacitor;
Claim 8
Dependent Claim
18 words
a second impedance means comprising a capacitor and a high resistance connected in shunt circuit across said capacitor;
Claim 9
Dependent Claim
3 words
a voltage source;
Claim 10
Dependent Claim
3 words
a voltage source;
Claim 11
Dependent Claim
109 words
a transformer comprising a. closed magnetic core having four interconnected branches, b. a pair of primary windings wound about a first pair of said branches, c. two pairs of secondary windings, one of said two pairs wound about said first pair of said branches commonly with said primary windings, and the other of said two pairs wound about the other pair of said branches, said first pair having a number of turns comprising from 10 percent to 80 percent of the total number of turns of said two pairs of secondary windings, and, d. flux leakage means disposed between said first pair anD said second pair of said branches;
Claim 12
Dependent Claim
109 words
a transformer comprising a. closed magnetic core having four interconnected branches, b. a pair of primary windings wound about a first pair of said branches, c. two pairs of secondary windings, one of said two pairs wound about said first pair of said branches commonly with said primary windings, and the other of said two pairs wound about the other pair of said branches, said first pair having a number of turns comprising from 10 percent to 80 percent of the total number of turns of said two pairs of secondary windings, and, d. flux leakage means disposed between said first pair anD said second pair of said branches;
Claim 13
Dependent Claim
10 words
means for serially connecting said primary windings to each other;
Claim 14
Dependent Claim
10 words
means for serially connecting said primary windings to each other;
Claim 15
Dependent Claim
13 words
switch means for connecting said series connected primary winding to said voltage source;
Claim 16
Dependent Claim
13 words
switch means for connecting said series connected primary winding to said voltage source;
Claim 17
Dependent Claim
10 words
means for serially connecting said secondary windings to each other;
Claim 18
Dependent Claim
10 words
means for serially connecting said secondary windings to each other;
Claim 19
Dependent Claim
111 words
and means for connecting in series circuit said serially connected secondary windings, said serially connected fluorescent lamps and said second impedance, whereby operation of said switch means causes energization of said primary windings and generation of voltage in said secondary windings thereby to place voltage across both of said fluorescent lamps, with said first impedance means shunting substantially all of said voltage to the other of said pair of fluorescent lamps, thereby to cause ignition thereof, thereafter substantially of said voltage is placed across said one of said pair of fluorescent lamps thereby to cause ignition thereof, said leakage means thereupon causing lowering of voltage across both of said fluorescent lamps.
Claim 20
Dependent Claim
111 words
and means for connecting in series circuit said serially connected secondary windings, said serially connected fluorescent lamps and said second impedance, whereby operation of said switch means causes energization of said primary windings and generation of voltage in said secondary windings thereby to place voltage across both of said fluorescent lamps, with said first impedance means shunting substantially all of said voltage to the other of said pair of fluorescent lamps, thereby to cause ignition thereof, thereafter substantially of said voltage is placed across said one of said pair of fluorescent lamps thereby to cause ignition thereof, said leakage means thereupon causing lowering of voltage across both of said fluorescent lamps.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |