US3170084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp starting and operating circuit
Assignee: Westinghouse Electric Corp
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Filing: 1961-11-03
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Granted: 1965-02-16
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Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
- 👤 Theodore C Retzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:25
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/231; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE COMBINATION COMPRISING: A BRIDGE RECTIFYING CIRCUIT ADAPTED TO OPERATE A GASEOUS DISCHARGE LAMP ON DIRECT CURRENT FROM AN ALTERNATING VOLTAGE SOURCE; AN ALTERNATING CURRENT STARTING CIRCUIT COMPRISING A CAPACITOR, A RESISTOR, AND A TRANSFORMER HAVING A PRIMARY AND A SECONDARY WINDING; AND CIRCUIT MEANS INCLUDING A SWITCH HAVING ONE SET OF CONTACTS IN A CIRCUIT CONNECTING THE PRIMARY WINDING OF SAID TRANSFORMER TO THE INPUT OF SAID RECTIFYING CIRCUIT, AND A SECOND SET OF CONTACTS IN A CIR-
Claim 2
Dependent Claim
79 words
THE COMBINATION COMPRISING: A BRIDGE RECTIFYING CIRCUIT ADAPTED TO OPERATE A GASEOUS DISCHARGE LAMP ON DIRECT CURRENT FROM AN ALTERNATING VOLTAGE SOURCE; AN ALTERNATING CURRENT STARTING CIRCUIT COMPRISING A CAPACITOR, A RESISTOR, AND A TRANSFORMER HAVING A PRIMARY AND A SECONDARY WINDING; AND CIRCUIT MEANS INCLUDING A SWITCH HAVING ONE SET OF CONTACTS IN A CIRCUIT CONNECTING THE PRIMARY WINDING OF SAID TRANSFORMER TO THE INPUT OF SAID RECTIFYING CIRCUIT, AND A SECOND SET OF CONTACTS IN A CIR-
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |