Patent US3148481A successfully refreshed from Google Patents.
US3148481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roof for railway car and method of making same
Assignee: Stanray Corp
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Filing: 1961-07-31
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Granted: 1964-09-15
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 James S Swann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:35
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
151 words
A ROOF SHEET FOR A RAILWAY CAR ROOF CONSISTING OF A SINGLE SHEET OF METAL HAVING A PLURALITY OF LONGITUDINALLY SPACED TRANSVERSELY EXTENDING UPSTANDING RIBS ON THE TOP SURFACE THEREOF, SAID RIBS CONSISTING OF INTEGRAL FOLD PORTIONS OF THE SHEET CENTRALLY OF THE SIDE EDGES THEREOF, THE TRANSVERSE MEDIAL LINE OF THE SHEET DEFINING A RIDGE LINE FOR THE CAR ROOF, LONGITUDINAL SLITS IN THE MEDIAL LINE OF SAID FOLD PORTIONS, THE TWO SECTIONS OF THE CAR ROOF ON OPPOSITE SIDES OF SAID RIDGE LINE SLOPING DOWNWARDLY, TO AN INTEGRALLY FORMED DEPENDENT EAVE FLANGE AT THE SIDE EDGE OF THE SHEET, THE SIDE WALLS OF SAID RIBS NEAR THE SIDE EDGES OF THE SHEET TERMINATING IN UPPER FREE TOP EDGES WHICH SLOPE DOWNWARDLY AND OUTWARDLY TO THE TOP EDGE OF SAID EAVE FLANGE, SAID EAVE FLANGE COMPRISING A PLURALITY OF CONTIGUOUS SECTIONS HAVING ABUTTING EDGE TO EDGE RELATION AT EACH POINT.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |