US3238415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc control circuit
Assignee: G K TURNER ASSOCIATES
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Filing: 1961-09-22
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Granted: 1966-03-01
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Expires: 1981-09-22
Abstract
No abstract record available.
Inventors
- 👤 George K Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
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
176 words
A STARTING CIRCUIT FOR A LAMP HAVING FIRST AND SECONE ELECTRODES, THE CIRCUIT COMPRISING A FIRST ELECTRIC POWER SOURCE HAVING A PAIR OF TERMINALS, MEANS CONNECTING THE TERMINALS OF THE FIRST SOURCE ACROSS THE ELECTRODE, A SECOND ELECTRIC POWER SOURCE OF VARIABLE VOLTAGE LOWER THAN THE FIRST SORUCE AND HAVING A PAIR OF TERMINALS, A FIRST CIRCUIT BRANCH CONNECTED AT ONE END TO ONE OF THE TERMINALS OF THE SECOND SOURCE, MEANS FOR CONNECTING THE OTHER TERMINAL OF THE SECOND SOURCE TO THE SECOND ELECTRODE, A SECOND CIRCUIT BRANCH OF VARIABLE IMPEDANCE CONNECTED IN PARALLEL WITH THE FIRST BRANCH, ARECTIFIER, MEANS CONNECTING ADJACENT ENDS OF THE TWO CIRCUIT BRANCHES REMOTE FROM THE SAID ONE TERMINAL OF THE SECOND SOURCE IN SERIES WITH THE RECTIFIER AND THE FIRST ELECTRODE, A CAPACITOR CONNECTED ACROSS THE ELECTRODES, MEANS FOR SENSING VARIATIONS IN THE VOLTAGE OF THE SECOND SOURCE, AND MEANS FOR AUTOMATICALLY CHANGING THE IMPEDANCE OF THE SECOND BRANCH IN RESPONSE TO THE SENSING MEANS TO KEEP SUBSTANTIALLY CONSTANT THE POWER DELIVERED TO THE LAMP FROM THE SECOND SOURCE.
Claim 2
Dependent Claim
176 words
A STARTING CIRCUIT FOR A LAMP HAVING FIRST AND SECONE ELECTRODES, THE CIRCUIT COMPRISING A FIRST ELECTRIC POWER SOURCE HAVING A PAIR OF TERMINALS, MEANS CONNECTING THE TERMINALS OF THE FIRST SOURCE ACROSS THE ELECTRODE, A SECOND ELECTRIC POWER SOURCE OF VARIABLE VOLTAGE LOWER THAN THE FIRST SORUCE AND HAVING A PAIR OF TERMINALS, A FIRST CIRCUIT BRANCH CONNECTED AT ONE END TO ONE OF THE TERMINALS OF THE SECOND SOURCE, MEANS FOR CONNECTING THE OTHER TERMINAL OF THE SECOND SOURCE TO THE SECOND ELECTRODE, A SECOND CIRCUIT BRANCH OF VARIABLE IMPEDANCE CONNECTED IN PARALLEL WITH THE FIRST BRANCH, ARECTIFIER, MEANS CONNECTING ADJACENT ENDS OF THE TWO CIRCUIT BRANCHES REMOTE FROM THE SAID ONE TERMINAL OF THE SECOND SOURCE IN SERIES WITH THE RECTIFIER AND THE FIRST ELECTRODE, A CAPACITOR CONNECTED ACROSS THE ELECTRODES, MEANS FOR SENSING VARIATIONS IN THE VOLTAGE OF THE SECOND SOURCE, AND MEANS FOR AUTOMATICALLY CHANGING THE IMPEDANCE OF THE SECOND BRANCH IN RESPONSE TO THE SENSING MEANS TO KEEP SUBSTANTIALLY CONSTANT THE POWER DELIVERED TO THE LAMP FROM THE SECOND SOURCE.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |