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US3076089A
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Apparatus for detecting hot journal boxes
Assignee: TDK Micronas GmbH
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Filing: 1954-08-06
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Granted: 1963-01-29
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Expires: 1974-08-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Spalding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:06
CPC Classifications
G; G21; G21H; G21H5/00; G21H5/02; B; B61; B61L; B61L1/00; B61L1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A HOT JOURNAL BOX DETECTING APPARATUS FOR USE ON RAILROADS COMPRISING A RAILROAD JOURNAL BOX, A HOUSING MADE OF MATERIAL WHICH WILL MELT WHEN SAID JOURNAL BOX BECOMES OVERHEATED AND HAVING A CAVITY FORMED THEREIN RADIOACTIVE MATERIAL CONTAINED IN SAID HOUSING CAVITY, SAID HOUSING ATTENUATING THE RADIATION EXCEPT WHEN THE HOUSING IS MELTED, SAID HOUSING BEING DISPOSED IN SAID JOURNAL BOX SO THAT OVERHEATING OF SAID JOURNAL BOX MELTS
Claim 2
Dependent Claim
69 words
A HOT JOURNAL BOX DETECTING APPARATUS FOR USE ON RAILROADS COMPRISING A RAILROAD JOURNAL BOX, A HOUSING MADE OF MATERIAL WHICH WILL MELT WHEN SAID JOURNAL BOX BECOMES OVERHEATED AND HAVING A CAVITY FORMED THEREIN RADIOACTIVE MATERIAL CONTAINED IN SAID HOUSING CAVITY, SAID HOUSING ATTENUATING THE RADIATION EXCEPT WHEN THE HOUSING IS MELTED, SAID HOUSING BEING DISPOSED IN SAID JOURNAL BOX SO THAT OVERHEATING OF SAID JOURNAL BOX MELTS
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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |