US3205388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill hole type cathode with cooling means
Assignee: Individual
•
Filing: 1960-12-30
•
Granted: 1965-09-07
•
Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lany Beatrice Pearson De
- 👤 Paul L Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:24
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/52; H01J61/523; H01J17/00; H01J17/02; H01J17/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ELECTRIC DISCHARGE TUBE INCLUDING AN AIR IMPERVIOUS ENVELOPE FILLED WITH AN INERT GAS AT A PRESSURE BETWEEN 100 MICRONS AND 5 MICRONS OF MERCURY, AN ANODE POSITIONED WITHIN SAID ENVELOPE AND A LEAD-IN FOR SAID ANODE, AN ELONGATED SOLID METALLIC CATHODE POSITIONED OPPOSITE AND AWAY FROM SAID ANODE AND ARRANGED TO PROVIDE AN ELECTRIC DISCHARGE THEREBETWEEN, A LEAD-IN FOR SAID CATHODE, A LONGITUDINAL ELONGATED HOLE IN SAID CATHODE GENERALLY IN ALIGNMENT WITH SAID ANODE, AND MEANS FOR SELECTIVELY COOLING SAID CATHODE TO STABILIZE THE DISCHARGE BETWEEN THE CATHODE AND ANODE AND TO INCREASE THE GAS DENSITY WITHIN THE HOLE.
Claim 2
Dependent Claim
100 words
AN ELECTRIC DISCHARGE TUBE INCLUDING AN AIR IMPERVIOUS ENVELOPE FILLED WITH AN INERT GAS AT A PRESSURE BETWEEN 100 MICRONS AND 5 MICRONS OF MERCURY, AN ANODE POSITIONED WITHIN SAID ENVELOPE AND A LEAD-IN FOR SAID ANODE, AN ELONGATED SOLID METALLIC CATHODE POSITIONED OPPOSITE AND AWAY FROM SAID ANODE AND ARRANGED TO PROVIDE AN ELECTRIC DISCHARGE THEREBETWEEN, A LEAD-IN FOR SAID CATHODE, A LONGITUDINAL ELONGATED HOLE IN SAID CATHODE GENERALLY IN ALIGNMENT WITH SAID ANODE, AND MEANS FOR SELECTIVELY COOLING SAID CATHODE TO STABILIZE THE DISCHARGE BETWEEN THE CATHODE AND ANODE AND TO INCREASE THE GAS DENSITY WITHIN THE HOLE.
References Cited (Backward Citations)
US1932025A
Cited
US1912097A
Cited
US1954958A
Cited
US1914762A
Cited
US2029013A
Cited
US2087735A
Cited
US2401059A
Cited
US2966601A
Cited
US2887603A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |