Patent US3228351A successfully refreshed from Google Patents.
US3228351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilting dump car reinforced end wall construction
Assignee: Individual
•
Filing: 1963-02-27
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Granted: 1966-01-11
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Expires: 1983-02-27
Abstract
No abstract record available.
Inventors
- 👤 Flowers Henry Fort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:53
CPC Classifications
B; B61; B61D; B61D9/00; B61D9/04; B61D9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A SIDE DUMP CAR BODY HAVING A BOTTOM WITH FLARING SIDE SKIRTS, END WALLS AND PIVOTED SIDES, THE COMBINATION OF INCLINED POSTS ATTACHED TO THE END WALLS AND EXTENDING FROM THEIR UPPER EDGES INTO SUPPORTING ENGAGEMENT WITH THE SIDE SKIRTS BELOW THE CAR BODY BOTTOM AND TIE BARS CONNECTED OPPOSITE SIDES OF THE POSTS TO THE LOWER SURFACE OF THE CAR BODY BOTTOM.
Claim 2
Dependent Claim
64 words
IN A SIDE DUMP CAR BODY HAVING A BOTTOM WITH FLARING SIDE SKIRTS, END WALLS AND PIVOTED SIDES, THE COMBINATION OF INCLINED POSTS ATTACHED TO THE END WALLS AND EXTENDING FROM THEIR UPPER EDGES INTO SUPPORTING ENGAGEMENT WITH THE SIDE SKIRTS BELOW THE CAR BODY BOTTOM AND TIE BARS CONNECTED OPPOSITE SIDES OF THE POSTS TO THE LOWER SURFACE OF THE CAR BODY BOTTOM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |