US2936378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation projector and shielding means
Assignee: US Philips Corp
•
Filing: 1956-09-07
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Granted: 1960-05-10
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Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Jensen Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:10
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; G; G21; G21F; G21F5/00; G21F5/02; A61N2005/1092; A61N2005/1094
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
AN IRRADIATION DEVICE COMPRISING A RADIOACTIVE SOURCE OF RADIATION, A LEAD SCREEN HAVING A CHANNEL FOR THE PASSAGE OF A BEAM OF RADIATION FROM SAID SOURCE, A SUPPLY OF MERCURY FOR CLOSING SAID CHANNEL AND INTERCEPTING SAID BEAM OF RADIATION, MEANS TO EXPEL THE MERCURY FROM SAID CHANNEL INTO A CHAMBER LOCATED ADJACENT THE CHANNEL AND OUTSIDE THE LEAD SCREEN, SAID MERCURY EXPULSION MEANS COMPRISING A DISPLACEMENT MEMBER ADAPTED TO BE IMPELLED BY A GASEOUS MEDIUM UNDER PRESSURE, AND A FLEXIBLE MEMBER IN SAID CHAMBER FOR URGING THE MERCURY AGAINST THE ACTION OF SAID DISPLACEMENT MEMBER.
Claim 2
Dependent Claim
96 words
AN IRRADIATION DEVICE COMPRISING A RADIOACTIVE SOURCE OF RADIATION, A LEAD SCREEN HAVING A CHANNEL FOR THE PASSAGE OF A BEAM OF RADIATION FROM SAID SOURCE, A SUPPLY OF MERCURY FOR CLOSING SAID CHANNEL AND INTERCEPTING SAID BEAM OF RADIATION, MEANS TO EXPEL THE MERCURY FROM SAID CHANNEL INTO A CHAMBER LOCATED ADJACENT THE CHANNEL AND OUTSIDE THE LEAD SCREEN, SAID MERCURY EXPULSION MEANS COMPRISING A DISPLACEMENT MEMBER ADAPTED TO BE IMPELLED BY A GASEOUS MEDIUM UNDER PRESSURE, AND A FLEXIBLE MEMBER IN SAID CHAMBER FOR URGING THE MERCURY AGAINST THE ACTION OF SAID DISPLACEMENT MEMBER.
References Cited (Backward Citations)
US2649549A
Cited
US2675479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |