US2756346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pocket ionization chamber
Assignee: Victoreen Instrument Co
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Filing: 1950-10-06
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Granted: 1956-07-24
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 John A Victoreen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:44
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/02; H01J47/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN IONIZATION CHAMBER COMPRISING A CYLINDRICAL ALUMINUM TUBE, A FIRST ELECTRODE FOR SAID IONIZATION CHAMBER COMPRISING TWO OR MORE THIN WALLED CYLINDRICAL SLEEVES OF NYLON DISPOSED IN THE TUBE AND HAVING ALL THEIR SURFACES COATED WITH CARBON, EACH OF SAID SLEEVES HAVING CENTRALLY DISPOSED WALL FORMED TO PROVIDE A SUPPORT, A SECOND ELECTRODE COMPRISING A CYLINDRICAL BODY HAVING CENTRALLY DISPOSED BOSSES ON OPPOSITE ENDS AND PROVIDED WITH A COATING OF CARBON, INSULATING MEANS FOR SUPPORTING SAID SECOND ELECTRODE IN THE SUPPORTS ON THE OUTER ELECTRODE COMPRISING POLYETHLENE BEARINGS DISPOSED IN THE SUPPORTS ENGAGING SAID BOSSES.
Claim 2
Dependent Claim
95 words
AN IONIZATION CHAMBER COMPRISING A CYLINDRICAL ALUMINUM TUBE, A FIRST ELECTRODE FOR SAID IONIZATION CHAMBER COMPRISING TWO OR MORE THIN WALLED CYLINDRICAL SLEEVES OF NYLON DISPOSED IN THE TUBE AND HAVING ALL THEIR SURFACES COATED WITH CARBON, EACH OF SAID SLEEVES HAVING CENTRALLY DISPOSED WALL FORMED TO PROVIDE A SUPPORT, A SECOND ELECTRODE COMPRISING A CYLINDRICAL BODY HAVING CENTRALLY DISPOSED BOSSES ON OPPOSITE ENDS AND PROVIDED WITH A COATING OF CARBON, INSULATING MEANS FOR SUPPORTING SAID SECOND ELECTRODE IN THE SUPPORTS ON THE OUTER ELECTRODE COMPRISING POLYETHLENE BEARINGS DISPOSED IN THE SUPPORTS ENGAGING SAID BOSSES.
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) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |