US3271612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash device
Assignee: PEK LABS Inc
•
Filing: 1963-03-19
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Granted: 1966-09-06
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Charles H Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/10; H01J61/103; H01J61/84; H01J61/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN ARC DISCHARGE FLASH LAMP COMPRISING: A SEALED T-SHAPED ENVELOPE DEFINING A T-BAR PORTION AND A T-LEG PORTION CONTAINING A GASEOUS SUBSTANCE AT LESS THAN ATMOSPHERIC PRESSURE, A PARTITION EXTENDING CENTRALLY ALONG SAID T-LEG PORTION WITH THE UPPER END THEREOF EXTENDING INTO AND BEING SEALED TRANSVERSELY ACROSS SAID T-BAR PORTION TO FORM TWO COMMUNICATING CHAMBERS AND THE LOWER END OF SAID PARTITION FORMING A COMMUNICATION GAP WITH THE LOWER END OF SAID T-LEG PORTION FOR COMMUNICATING THE PARTITIONED SECTIONS OF SAID ENVELOPE; A SINGLE FIELD EMISSION ANODE MOUNTED IN ONE END OF SAID T-BAR PORTION AND EXTENDING INTO SAID T-BAR PORTION WITH ITS ARC END PORTION FACING ONE SIDE OF SAID PARTITION; AND A SINGLE FIELD EMISSION CATHODE MOUNTED IN THE OHTER END OF SAID T-BAR PORTION AND EXTENDING INTO SAID T-BAR PORTION WITH ITS ARC END PORTION FACING ON THE OTHER SIDE OF SAID PARTITION.
Claim 2
Dependent Claim
146 words
AN ARC DISCHARGE FLASH LAMP COMPRISING: A SEALED T-SHAPED ENVELOPE DEFINING A T-BAR PORTION AND A T-LEG PORTION CONTAINING A GASEOUS SUBSTANCE AT LESS THAN ATMOSPHERIC PRESSURE, A PARTITION EXTENDING CENTRALLY ALONG SAID T-LEG PORTION WITH THE UPPER END THEREOF EXTENDING INTO AND BEING SEALED TRANSVERSELY ACROSS SAID T-BAR PORTION TO FORM TWO COMMUNICATING CHAMBERS AND THE LOWER END OF SAID PARTITION FORMING A COMMUNICATION GAP WITH THE LOWER END OF SAID T-LEG PORTION FOR COMMUNICATING THE PARTITIONED SECTIONS OF SAID ENVELOPE; A SINGLE FIELD EMISSION ANODE MOUNTED IN ONE END OF SAID T-BAR PORTION AND EXTENDING INTO SAID T-BAR PORTION WITH ITS ARC END PORTION FACING ONE SIDE OF SAID PARTITION; AND A SINGLE FIELD EMISSION CATHODE MOUNTED IN THE OHTER END OF SAID T-BAR PORTION AND EXTENDING INTO SAID T-BAR PORTION WITH ITS ARC END PORTION FACING ON THE OTHER SIDE OF SAID PARTITION.
References Cited (Backward Citations)
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Cited
US2102190A
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US2006081A
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US2121333A
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US2179606A
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US2731577A
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US3067357A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |