Patent US3344302A successfully refreshed from Google Patents.
US3344302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation detector characterized by its minimum spurious count rate
Assignee: Honeywell Inc
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Filing: 1964-10-09
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Granted: 1967-09-26
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Expires: 1984-10-09
Abstract
No abstract record available.
Inventors
- 👤 Robert O Engh
- 👤 Robert G Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:26
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08; F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; H01J61/00; H01J61/02; H01J61/12; H05; H05H; H05H1/00; H05H1/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
292 words
A RADIATION DETECTOR TUBE CHARACTERIZED BY ITS MINIMUM SPURIOUS COUNT RATE, COMPRISING: A GAS TIGHT ENVELOPE DEFINING AN ENCLOSED VOLUME, SAID ENVELOPE INCLUDING A RADIATION PERMEABLE END PORTION; A PLANAR AND A SCREEN-LIKE PLANAR ANODE IN SAID ENCLOSED VOLUME, SAID CATHODE BEING CAPABLE OF RELEASING PHOTOELECTRONS IN RESPONSE TO IMPINGING RADIATION TO BE DETECTED; CATHODE AND ANODE SUPPORT MEANS POSITIONING SAID ANODE AND CATHODE IN PREDETERMINED CLOSELY SPACED RELATIONSHIP WITH RESPECT TO EACH OTHER AND IN PREDETERMINED RELATIVELY LARGE SPACED RELATIONSHIP WITH RESPECT TO THE INTERIOR SURFACES OF SAID ENVELOPE, SAID CATHODE SUPPORT MEANS ALSO POSITIONING SAID CATHODE SUBSTANTIALLY TRANSVERSE WITH RESPECT TO SAID RADIATION PERMEABLE END PORTION OF SAID ENVELOPE, SAID ANODE SUPPORT MEANS ALSO POSITIONING SAID ANODE SUBSTANTIALLY PARALLEL TO SAID CATHODE AND BETWEEN SAID CATHODE AND SAID RADIATION PERMEABLE END PORTION OF SAID ENVELOPE; AN ELONGATED CONDUCTIVE MEMBER ON SAID CATHODE SUPPORT MEANS EXTENDING BEYOND SAID ANODE TOWARD SAID RADIATION PERMEABLE END PORTION OF SAID ENVELOPE, AND A GAS FILLING IN SAID ENCLOSED VOLUME ADAPTED TO BE IONIZED UPON THE PRODUCTION OF PHOTELECTRONS AT SAID CATHODE AND PRODUCE A DISCHARGE IN THE SPACE BETWEEN SAID CATHODE AND SAID ANODE, SAID GAS FILLING BEING FURTHER CHARACTERIZED IN THAT IT HAS AN ELECTRON IONIZATION COEFFIEIENT WHICH VARIES SUBSTANTIALLY AS A FUNCTION OF E/PO, AND HAS A PREDETERMINED RELATIVELY HIGH IONIZATION COEFFICIENT CORRESPONDING SUBSTANTIALLY TO THE E/PO CHARACTERISTICS OF THE PREDETERMINED SPACING BETWEEN SAID ELECTRODES AND A PREDETERMINED RELATIVELY LOW IONIZATION COEFFICIENT CORRESPONDING SUBSTANTIALLY TO THE E/PO CHARACTERISTICS OF THE PREDETERMINED SPACING BETWEEN SAID ELECTRODES AND THE INTERIOR SURFACES OF SAID ENVELOPE WHEREBY THE IONIZATION OF SAID GAS FILLING IS PROMOTED IN THE SPACE BETWEEN SAID ELECTRODES AND MINIMIZED IN THE SPACE BETWEEN SAID ELECTRODES AND THE INTERIOR SURFACES OF SAID ENVELOPE.
Claim 2
Dependent Claim
292 words
A RADIATION DETECTOR TUBE CHARACTERIZED BY ITS MINIMUM SPURIOUS COUNT RATE, COMPRISING: A GAS TIGHT ENVELOPE DEFINING AN ENCLOSED VOLUME, SAID ENVELOPE INCLUDING A RADIATION PERMEABLE END PORTION; A PLANAR AND A SCREEN-LIKE PLANAR ANODE IN SAID ENCLOSED VOLUME, SAID CATHODE BEING CAPABLE OF RELEASING PHOTOELECTRONS IN RESPONSE TO IMPINGING RADIATION TO BE DETECTED; CATHODE AND ANODE SUPPORT MEANS POSITIONING SAID ANODE AND CATHODE IN PREDETERMINED CLOSELY SPACED RELATIONSHIP WITH RESPECT TO EACH OTHER AND IN PREDETERMINED RELATIVELY LARGE SPACED RELATIONSHIP WITH RESPECT TO THE INTERIOR SURFACES OF SAID ENVELOPE, SAID CATHODE SUPPORT MEANS ALSO POSITIONING SAID CATHODE SUBSTANTIALLY TRANSVERSE WITH RESPECT TO SAID RADIATION PERMEABLE END PORTION OF SAID ENVELOPE, SAID ANODE SUPPORT MEANS ALSO POSITIONING SAID ANODE SUBSTANTIALLY PARALLEL TO SAID CATHODE AND BETWEEN SAID CATHODE AND SAID RADIATION PERMEABLE END PORTION OF SAID ENVELOPE; AN ELONGATED CONDUCTIVE MEMBER ON SAID CATHODE SUPPORT MEANS EXTENDING BEYOND SAID ANODE TOWARD SAID RADIATION PERMEABLE END PORTION OF SAID ENVELOPE, AND A GAS FILLING IN SAID ENCLOSED VOLUME ADAPTED TO BE IONIZED UPON THE PRODUCTION OF PHOTELECTRONS AT SAID CATHODE AND PRODUCE A DISCHARGE IN THE SPACE BETWEEN SAID CATHODE AND SAID ANODE, SAID GAS FILLING BEING FURTHER CHARACTERIZED IN THAT IT HAS AN ELECTRON IONIZATION COEFFIEIENT WHICH VARIES SUBSTANTIALLY AS A FUNCTION OF E/PO, AND HAS A PREDETERMINED RELATIVELY HIGH IONIZATION COEFFICIENT CORRESPONDING SUBSTANTIALLY TO THE E/PO CHARACTERISTICS OF THE PREDETERMINED SPACING BETWEEN SAID ELECTRODES AND A PREDETERMINED RELATIVELY LOW IONIZATION COEFFICIENT CORRESPONDING SUBSTANTIALLY TO THE E/PO CHARACTERISTICS OF THE PREDETERMINED SPACING BETWEEN SAID ELECTRODES AND THE INTERIOR SURFACES OF SAID ENVELOPE WHEREBY THE IONIZATION OF SAID GAS FILLING IS PROMOTED IN THE SPACE BETWEEN SAID ELECTRODES AND MINIMIZED IN THE SPACE BETWEEN SAID ELECTRODES AND THE INTERIOR SURFACES OF SAID ENVELOPE.
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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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |