Patent US3108773A successfully refreshed from Google Patents.
US3108773A
Expired / Lapsed
US
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Hotbox detector
Assignee: Servo Corp of America
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Filing: 1960-05-16
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Granted: 1963-10-29
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Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 William M Pelino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:22
CPC Classifications
B; B61; B61K; B61K9/00; B61K9/04; B61K9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
RAILROAD HOTBOX DETECTING MEANS, COMPRISING A DETECTING DEVICE ADAPTED TO BE FIXEDLY MOUNTED ALONGSIDE A LENGTH OF RAILROAD TRACK, TWO SPACED INFRARED SENSITIVE DETECTOR ELEMENTS HAVING SEPARATE ELECTRICAL RESPONSES TO INCIDENT RADIATION, OPTICAL MEANS IMAGING THE RESPECTIVE SENSITIVE AREAS OF SAID DETECTOR ELEMENTS, THE IMAGE OF ONE OF THE DETECTOR ELEMENTS BEING SPACED GENERALLY ABOVE THAT OF THE OTHER AND LOCATED GENERALLY ON AN AXIS INCLINED UPWARDLY AND IN THE GENERAL LONGITUDINAL DIRECTION OF THE TRACK AND ALIGNED TO SCAN CORRESPONDING SIDES OF PASSING JOURNAL BOXES, WHEREBY FOR A JOURNAL BOX PASSING THE FIELD OF VIEW OF SAID DETECTOR ELEMENTS, THE INDIVIDUAL SIGNAL RESPONSES OF SAID DETECTOR ELEMENTS ARE IDENTICAL EXCEPT FOR A TIME DISPLACEMENT ATTRIBUTABLE TO SAID SPACING, AND
Claim 2
Dependent Claim
120 words
RAILROAD HOTBOX DETECTING MEANS, COMPRISING A DETECTING DEVICE ADAPTED TO BE FIXEDLY MOUNTED ALONGSIDE A LENGTH OF RAILROAD TRACK, TWO SPACED INFRARED SENSITIVE DETECTOR ELEMENTS HAVING SEPARATE ELECTRICAL RESPONSES TO INCIDENT RADIATION, OPTICAL MEANS IMAGING THE RESPECTIVE SENSITIVE AREAS OF SAID DETECTOR ELEMENTS, THE IMAGE OF ONE OF THE DETECTOR ELEMENTS BEING SPACED GENERALLY ABOVE THAT OF THE OTHER AND LOCATED GENERALLY ON AN AXIS INCLINED UPWARDLY AND IN THE GENERAL LONGITUDINAL DIRECTION OF THE TRACK AND ALIGNED TO SCAN CORRESPONDING SIDES OF PASSING JOURNAL BOXES, WHEREBY FOR A JOURNAL BOX PASSING THE FIELD OF VIEW OF SAID DETECTOR ELEMENTS, THE INDIVIDUAL SIGNAL RESPONSES OF SAID DETECTOR ELEMENTS ARE IDENTICAL EXCEPT FOR A TIME DISPLACEMENT ATTRIBUTABLE TO SAID SPACING, 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) | 1966-10-28 | 1967-04-29 | 1967-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-28 | 1971-04-29 | 1971-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-28 | 1975-04-29 | 1975-10-29 | $7700.00 | Window Closed / Lapsed |