Patent US3256459A successfully refreshed from Google Patents.
US3256459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc lamp and method
Assignee: PEK LABS Inc
•
Filing: 1963-02-15
•
Granted: 1966-06-14
•
Expires: 1983-02-15
Abstract
No abstract record available.
Inventors
- 👤 Charles H Keller
- 👤 Raymond E Paquette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:55
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/98; H05; H05B; H05B31/00; H05B31/02; H05B31/30; H05B31/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF STARTING AND OPERATING AN ARC LAMP, INCLUDING A PRESSURIZED ENVELOPE AND A PAIR OF SPACED APART ELECTRODES IMMOVABLY DISPOSED WITHIN SAID ENVELOPE HAVING ARC END DEFINING AN ARC GAP THEREBETWEEN, SAID METHOD COMPRISING THE STEPS: CONDUCTIVELY SPANNING SAID ARC GAP WITH A FUSION BRIDGE WHICH MELTS WHEN SUBJECTED TO NORMAL ARC LAMP SUSTAINING POWER; AND APPLYING NORMAL ARC LAMP SUSTAINING POWER ACROSS SAID ELECTRODES TO MELT SAID FUSION BRIDGE TO FIRST ESTABLISH THE ARC AND TO THEREAFTER SUSTAIN THE ONE ESTABLISHED ARC.
Claim 2
Independent Claim
85 words
THE METHOD OF STARTING AND OPERATING AN ARC LAMP, INCLUDING A PRESSURIZED ENVELOPE AND A PAIR OF SPACED APART ELECTRODES IMMOVABLY DISPOSED WITHIN SAID ENVELOPE HAVING ARC END DEFINING AN ARC GAP THEREBETWEEN, SAID METHOD COMPRISING THE STEPS: CONDUCTIVELY SPANNING SAID ARC GAP WITH A FUSION BRIDGE WHICH MELTS WHEN SUBJECTED TO NORMAL ARC LAMP SUSTAINING POWER; AND APPLYING NORMAL ARC LAMP SUSTAINING POWER ACROSS SAID ELECTRODES TO MELT SAID FUSION BRIDGE TO FIRST ESTABLISH THE ARC AND TO THEREAFTER SUSTAIN THE ONE ESTABLISHED ARC.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |