Patent US3201584A successfully refreshed from Google Patents.
US3201584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot box detector
Assignee: Servo Corp of America
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Filing: 1961-11-21
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Granted: 1965-08-17
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Expires: 1981-11-21
Abstract
No abstract record available.
Inventors
- 👤 Keith E Mullenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:45
CPC Classifications
B; B61; B61K; B61K9/00; B61K9/04; B61K9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
IN COMBINATION, A LENGTH OF RAILROAD TRACK, A RAILROAD CAR ON SAID TRACK, SAID CAR HAVING A BODY AND AN AXLE AND JOURNAL BOXES CONNECTING SAID AXLES TO SAID BODY, AND A HOT-BOX DETECTING DEVICE FIXEDLY MOUNTED ALONGSIDE ONE OF THE RAILS OF SAID TRACK AND BELOW THE LEVEL OF SAID AXLE, SAID DETECTING DEVICE COMPRISING FIRST AND SECOND SPACED HEAT-SENSITIVE DETECTOR ELEMENTS EACH OF WHICH PRODUCES AN ELECTRICAL SIGNAL IN RESPONSE TO INCIDENT RADIANT ENERGY, OPTICAL MEAN IMAGING SAID DETECTOR ELEMENTS ALONG SEPARATE UPWARDLY INCLINED AXIS DIRECTED AT THE UNDERSIDE OF THE BODY OF SAID CAR AND GENERALLY IN THE LONGITUDINAL DIRECTION OF SAID TRACK, THE ASPECT OF THE FIRST OF SAID AXES BEING SUCH AS TO IMAGE SAID FIRST DETECTOR ELEMENT ON CORRESPONDING SIDES OF JOURNAL BOXES ON THAT SIDE OF THE TRACK DEFINED BY SAID ONE RAIL, THE ASPECT OF THE SECOND OF SAID AXES BEING SUCH AS TO IMAGE SAID SECOND DETECTOR ELEMENT ON THE UNDERSIDE OF THE BODY OF SAID CAR AT ALL TIMES THAT SAID FIRST DETECTOR ELEMENT IS IMAGE ON A JOURNAL BOX, AND MEANS CONTINUOUSLY DIFFERENTIALLY EVALUATING THE OUTPUTS OF SAID DETECTOR ELEMENTS WITH RESPECT TO EACH OTHER.
Claim 2
Dependent Claim
196 words
IN COMBINATION, A LENGTH OF RAILROAD TRACK, A RAILROAD CAR ON SAID TRACK, SAID CAR HAVING A BODY AND AN AXLE AND JOURNAL BOXES CONNECTING SAID AXLES TO SAID BODY, AND A HOT-BOX DETECTING DEVICE FIXEDLY MOUNTED ALONGSIDE ONE OF THE RAILS OF SAID TRACK AND BELOW THE LEVEL OF SAID AXLE, SAID DETECTING DEVICE COMPRISING FIRST AND SECOND SPACED HEAT-SENSITIVE DETECTOR ELEMENTS EACH OF WHICH PRODUCES AN ELECTRICAL SIGNAL IN RESPONSE TO INCIDENT RADIANT ENERGY, OPTICAL MEAN IMAGING SAID DETECTOR ELEMENTS ALONG SEPARATE UPWARDLY INCLINED AXIS DIRECTED AT THE UNDERSIDE OF THE BODY OF SAID CAR AND GENERALLY IN THE LONGITUDINAL DIRECTION OF SAID TRACK, THE ASPECT OF THE FIRST OF SAID AXES BEING SUCH AS TO IMAGE SAID FIRST DETECTOR ELEMENT ON CORRESPONDING SIDES OF JOURNAL BOXES ON THAT SIDE OF THE TRACK DEFINED BY SAID ONE RAIL, THE ASPECT OF THE SECOND OF SAID AXES BEING SUCH AS TO IMAGE SAID SECOND DETECTOR ELEMENT ON THE UNDERSIDE OF THE BODY OF SAID CAR AT ALL TIMES THAT SAID FIRST DETECTOR ELEMENT IS IMAGE ON A JOURNAL BOX, AND MEANS CONTINUOUSLY DIFFERENTIALLY EVALUATING THE OUTPUTS OF SAID DETECTOR ELEMENTS WITH RESPECT TO EACH OTHER.
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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |