Patent US3126512A successfully refreshed from Google Patents.
US3126512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion air density sensor including dark
Assignee: —
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Filing: —
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Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:32
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN AN AIR DENSITY SENSOR DEVICE OF A TYPE INCLUDING SPACED ANODE AND CATHODE ELEMENTS FOR PROVIDING A SAMPLING ZONE THEREBETWEEN, MEANS FOR SUPPLYING AIR UNDER PREVAILING ATMOSPHERIC PRESSURE TO SAID SAMPLING ZONE, RADIOACTIVE MATERIAL CARRIED BY THE ANODE ELEMENT TO PROVIDE SOURCE OF ALPHA PARTICLES EMITTED THEREFROM TO IONIZE THE AIR IN THE SAMPLING ZONE, AND MEANS OPERATIVELY CONNECTED BETWEEN SID ANODE AND CATHODE ELEMENTS TO PROVIDE AN OUTPUT SIGNAL PROPORTIONAL TO THE DENSITY OF THE AIR IN THE SAMPLING ZONE; THE IMPROVEMENT COMPRISING A SHIELDING MEMBER POSITIONED IN SPACED PROXIMITY TO THE RADIOACTIVE MATERIAL, AND A SOURCE OF ELECTRICAL ENERGY TO MAINTAIN THE SHIELDING MEMBER AT A POTENTIAL SUFFICIENTLY MORE POSITIVE THAN THE ANODE ELEMENT SO THAT DELTA ELECTRONS EMITTED FROMTHE RADIOACTIVE MATERIAL MAY BE COLLECTED BY THE SHIELDING MEMBER AND
Claim 2
Dependent Claim
133 words
IN AN AIR DENSITY SENSOR DEVICE OF A TYPE INCLUDING SPACED ANODE AND CATHODE ELEMENTS FOR PROVIDING A SAMPLING ZONE THEREBETWEEN, MEANS FOR SUPPLYING AIR UNDER PREVAILING ATMOSPHERIC PRESSURE TO SAID SAMPLING ZONE, RADIOACTIVE MATERIAL CARRIED BY THE ANODE ELEMENT TO PROVIDE SOURCE OF ALPHA PARTICLES EMITTED THEREFROM TO IONIZE THE AIR IN THE SAMPLING ZONE, AND MEANS OPERATIVELY CONNECTED BETWEEN SID ANODE AND CATHODE ELEMENTS TO PROVIDE AN OUTPUT SIGNAL PROPORTIONAL TO THE DENSITY OF THE AIR IN THE SAMPLING ZONE; THE IMPROVEMENT COMPRISING A SHIELDING MEMBER POSITIONED IN SPACED PROXIMITY TO THE RADIOACTIVE MATERIAL, AND A SOURCE OF ELECTRICAL ENERGY TO MAINTAIN THE SHIELDING MEMBER AT A POTENTIAL SUFFICIENTLY MORE POSITIVE THAN THE ANODE ELEMENT SO THAT DELTA ELECTRONS EMITTED FROMTHE RADIOACTIVE MATERIAL MAY BE COLLECTED BY THE SHIELDING MEMBER AND
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) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |