US3260846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta ray light source structure
Assignee: Canrad Precision Industries Inc
•
Filing: 1963-04-09
•
Granted: 1966-07-12
•
Expires: 1983-04-09
Abstract
No abstract record available.
Inventors
- 👤 Feuer Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
AN IMPROVED RADIOACTIVE LIGHT SOURCE WHICH COMPRISES A CASING HAVING DISPOSED THEREIN A RADIOACTIVE REGION CONTAINING A MATERIAL GIVING OFF BETA RAYS, A PHOSPHOR REGION POSITIONED IN FRONT OF SAID RADIOACTIVE REGION IN THE DIRECTION OF LIGHT DISCHARGED FROM SAID SOURCE, SAID PHOSPHOR REGION BEING OF SUFFICIENT THICKNESS TO ABSORB A SUBSTANTIAL PORTION OF BETA RAYS WITHOUT SUBSTANTIAL ABSORPTION OF LIGHT RAYS, A LIGHT REFLECTIVE AND BETA RAY-REFLECTIVE HEAVY METAL REFLECTION REGION POSITIONED BEHIND AND ENCLOSING THE BACK PORTION OF SAID RADIO-ACTIVE REGION, SAID HEAVY METAL HAVING AN ATOMIC NUMBER OF AT LEAST 45 AND HAVING A THICKNESS SUFFICIENT TO REFLECT BETA RAYS, SAID METAL BEING POSITIONED ADJACENT TO SAID RADIOACTIVE REGION AND IN DIRECT CONTACT WITH THE BETA RAYS GIVEN OFF BY SAID RADIOACTIVE REGION AND HAVING A FRONT FACING LIGHT REFLECTING SURFACE SO THAT SAID REFLECTING REGION SERVES TO REFLECT BOTH LIGHT AND BETA RAYS FORWARDLY, SAID FORWARDLY DIRECTED BETA RAYS EXCITING SAID PHOSPHOR REGION AND BEING CONVERTED INTO LIGHT.
Claim 2
Dependent Claim
162 words
AN IMPROVED RADIOACTIVE LIGHT SOURCE WHICH COMPRISES A CASING HAVING DISPOSED THEREIN A RADIOACTIVE REGION CONTAINING A MATERIAL GIVING OFF BETA RAYS, A PHOSPHOR REGION POSITIONED IN FRONT OF SAID RADIOACTIVE REGION IN THE DIRECTION OF LIGHT DISCHARGED FROM SAID SOURCE, SAID PHOSPHOR REGION BEING OF SUFFICIENT THICKNESS TO ABSORB A SUBSTANTIAL PORTION OF BETA RAYS WITHOUT SUBSTANTIAL ABSORPTION OF LIGHT RAYS, A LIGHT REFLECTIVE AND BETA RAY-REFLECTIVE HEAVY METAL REFLECTION REGION POSITIONED BEHIND AND ENCLOSING THE BACK PORTION OF SAID RADIO-ACTIVE REGION, SAID HEAVY METAL HAVING AN ATOMIC NUMBER OF AT LEAST 45 AND HAVING A THICKNESS SUFFICIENT TO REFLECT BETA RAYS, SAID METAL BEING POSITIONED ADJACENT TO SAID RADIOACTIVE REGION AND IN DIRECT CONTACT WITH THE BETA RAYS GIVEN OFF BY SAID RADIOACTIVE REGION AND HAVING A FRONT FACING LIGHT REFLECTING SURFACE SO THAT SAID REFLECTING REGION SERVES TO REFLECT BOTH LIGHT AND BETA RAYS FORWARDLY, SAID FORWARDLY DIRECTED BETA RAYS EXCITING SAID PHOSPHOR REGION AND BEING CONVERTED INTO LIGHT.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |