Patent US3384747A successfully refreshed from Google Patents.
US3384747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightining warning probe utilizing a radioactive ionizing element
Assignee: B K SWEENEY MANUFACTURING Co
•
Filing: 1964-09-08
•
Granted: 1968-05-21
•
Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Edward T Able
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:41
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROBE CONSTRUCTION FOR USE IN SENSING THE GRADIENT OF ELECTRICAL POTENTIAL IN THE ATMOSPHERE COMPRISING: A HOLLOW, VERTICAL, ELECTRICALLY GROUNDED, METALLIC CONTAINER; A METALLIC HEAD ELEMENT CLOSING THE TOP OF AND GROUNDED TO SAID CONTAINER; AN UNGROUNDED METALLIC CIRCUIT BAR POSITIONED IN A VERTICAL PASSAGE THROUGH SAID HEAD ELEMENT, SAID BAR BEING SPACED FROM AND ELECTRICALLY INSULATED IN ITS ENTIRELY FROM SAID CONTAINER AND FROM SAID HEAD ELEMENT; A RADIO-ACTIVE, IONIZING ELEMENT MOUNTED ON THE UPPER EXTREMITY OF SAID CIRCUIT BAR ABOVE SAID HEAD ELEMENT; AND AN ELECTROSTATIC DC AMPLIFIER CIRCUIT COMPLETELY ENCLOSED IN SAID CONTAINER AND CONNECTED TO SAID CIRCUIT BAR FOR AMPLIFYING THE POTENTIAL PRODUCED BY SAID IONIZING ELEMENT IN CONSEQUENCE OF ITS CONTACT WITH THE ATMOSPHERE.
Claim 2
Dependent Claim
120 words
A PROBE CONSTRUCTION FOR USE IN SENSING THE GRADIENT OF ELECTRICAL POTENTIAL IN THE ATMOSPHERE COMPRISING: A HOLLOW, VERTICAL, ELECTRICALLY GROUNDED, METALLIC CONTAINER; A METALLIC HEAD ELEMENT CLOSING THE TOP OF AND GROUNDED TO SAID CONTAINER; AN UNGROUNDED METALLIC CIRCUIT BAR POSITIONED IN A VERTICAL PASSAGE THROUGH SAID HEAD ELEMENT, SAID BAR BEING SPACED FROM AND ELECTRICALLY INSULATED IN ITS ENTIRELY FROM SAID CONTAINER AND FROM SAID HEAD ELEMENT; A RADIO-ACTIVE, IONIZING ELEMENT MOUNTED ON THE UPPER EXTREMITY OF SAID CIRCUIT BAR ABOVE SAID HEAD ELEMENT; AND AN ELECTROSTATIC DC AMPLIFIER CIRCUIT COMPLETELY ENCLOSED IN SAID CONTAINER AND CONNECTED TO SAID CIRCUIT BAR FOR AMPLIFYING THE POTENTIAL PRODUCED BY SAID IONIZING ELEMENT IN CONSEQUENCE OF ITS CONTACT WITH THE ATMOSPHERE.
References Cited (Backward Citations)
US1605295A
Cited
US2025338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |