Patent US3145666A successfully refreshed from Google Patents.
US3145666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway car center sill
Assignee: Pullman Inc
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Filing: 1962-03-29
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Granted: 1964-08-25
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Expires: 1982-03-29
Abstract
No abstract record available.
Inventors
- 👤 John H Spence
- 👤 Sluys William Van Der
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:52
CPC Classifications
B; B61; B61F; B61F1/00; B61F1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A CENTER SILL FOR A RAILWAY CAR COMPRISING A CENTER PORTION, OPPOSITE END PORTIONS, AND TRANSITION PORTIONS BETWEEN SAID CENTER AND END PORTIONS, EACH OF SAID PORTIONS INCLUDING LATERALLY SPACED VERTICAL WEBS AND TOP AND BOTTOM COVER PLATES FIXED TO SAID WEBS, SAID CENTER PORTION BEING OF GREATER DEPTH THAN SAID END AND TRANSITION PORTIONS WITH SAID BOTTOM COVER PLATE EXTENDING HORIZONTALLY ALONG SAID CENTER PORTION AND SLOPING UPWARDLY FROM SAID CENTER PORTION THROUGH SAID TRANSITION PORTIONS AND CONTINUING HORIZONTALLY OUTWARDLY ALONG SAID END PORTIONS, SAID BOTTOM COVER PLATE IN EACH OF SAID TRANSITION PORTIONS INCLUDING A FLAT SECTION WHICH IS INCLINED RELATIVE TO ADJACENT BOTTOM COVER PLATE PORTIONS AND WHICH JOINS THE BOTTOM COVER PLATE PORTION OF SAID TRANSITION PORTION WITH THE BOTTOM COVER PLATE PORTION OF THE ADJACENT END PORTION, OPPOSITE TRANSVERSE MARGINS OF SAID FLAT SECTION DEFINING RELATIVELY DISTINCT ANGLES WITH THE ADJACENT BOTTOM COVER PLATE PORTIONS FOR LOCALIZATION OF STRESS APPLIED TO SAID SECTION, AND TRANSVERSE PLATE MEANS FIXED TO SAID WEBS AND MARGINS OF SAID SECTION AND EXTENDING TRANSVERSELY OF SAID SECTION BETWEEN SAID WEBS CONTINUOUSLY FIXED TO SAID MARGINS AT SAID ANGLES TO RIGIDIFY SAID SECTION.
Claim 2
Dependent Claim
192 words
A CENTER SILL FOR A RAILWAY CAR COMPRISING A CENTER PORTION, OPPOSITE END PORTIONS, AND TRANSITION PORTIONS BETWEEN SAID CENTER AND END PORTIONS, EACH OF SAID PORTIONS INCLUDING LATERALLY SPACED VERTICAL WEBS AND TOP AND BOTTOM COVER PLATES FIXED TO SAID WEBS, SAID CENTER PORTION BEING OF GREATER DEPTH THAN SAID END AND TRANSITION PORTIONS WITH SAID BOTTOM COVER PLATE EXTENDING HORIZONTALLY ALONG SAID CENTER PORTION AND SLOPING UPWARDLY FROM SAID CENTER PORTION THROUGH SAID TRANSITION PORTIONS AND CONTINUING HORIZONTALLY OUTWARDLY ALONG SAID END PORTIONS, SAID BOTTOM COVER PLATE IN EACH OF SAID TRANSITION PORTIONS INCLUDING A FLAT SECTION WHICH IS INCLINED RELATIVE TO ADJACENT BOTTOM COVER PLATE PORTIONS AND WHICH JOINS THE BOTTOM COVER PLATE PORTION OF SAID TRANSITION PORTION WITH THE BOTTOM COVER PLATE PORTION OF THE ADJACENT END PORTION, OPPOSITE TRANSVERSE MARGINS OF SAID FLAT SECTION DEFINING RELATIVELY DISTINCT ANGLES WITH THE ADJACENT BOTTOM COVER PLATE PORTIONS FOR LOCALIZATION OF STRESS APPLIED TO SAID SECTION, AND TRANSVERSE PLATE MEANS FIXED TO SAID WEBS AND MARGINS OF SAID SECTION AND EXTENDING TRANSVERSELY OF SAID SECTION BETWEEN SAID WEBS CONTINUOUSLY FIXED TO SAID MARGINS AT SAID ANGLES TO RIGIDIFY SAID SECTION.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |