US3169491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway bottom dump gondola car
Assignee: Baldwin Lima Hamilton Corp
•
Filing: 1960-09-26
•
Granted: 1965-02-16
•
Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Warren B Darlington
- 👤 Donald V Slaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:46
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/24; B61D7/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A BOTTOM DUMP GONDOLA CAR COMPRISING A BODY WITH SIDE WALLS, A PAIR OF BOTTOM DOORS PIVOTABLY MOUNTED ON THE LOWER PORTION OF SAID SIDE WALLS, MEANS TO OPEN AND CLOSE SAID DOORS, THE DISTAL ENDS OF SAID DOORS BEING ADJACENT EACH OTHER WHEN IN A CLOSED POSITION, A RESILIENT AND FLEXIBLE SEALING ELEMENT MOUNTED ON THE DISTAL END OF ONE DOOR, A RIGID SUPPORT OF SAID RESILIENT AND FLEXIBLE SEALING ELEMENT MOUNTED ON THE DISTAL END OF THE OTHER OF SAID DOORS, WHEREBY SAID RIGID SUPPORT DEFORMS SAID SEALING ELEMENT WHEN SAID DOORS ARE IN A CLOSED POSITION.
Claim 2
Dependent Claim
99 words
A BOTTOM DUMP GONDOLA CAR COMPRISING A BODY WITH SIDE WALLS, A PAIR OF BOTTOM DOORS PIVOTABLY MOUNTED ON THE LOWER PORTION OF SAID SIDE WALLS, MEANS TO OPEN AND CLOSE SAID DOORS, THE DISTAL ENDS OF SAID DOORS BEING ADJACENT EACH OTHER WHEN IN A CLOSED POSITION, A RESILIENT AND FLEXIBLE SEALING ELEMENT MOUNTED ON THE DISTAL END OF ONE DOOR, A RIGID SUPPORT OF SAID RESILIENT AND FLEXIBLE SEALING ELEMENT MOUNTED ON THE DISTAL END OF THE OTHER OF SAID DOORS, WHEREBY SAID RIGID SUPPORT DEFORMS SAID SEALING ELEMENT WHEN SAID DOORS ARE IN A CLOSED POSITION.
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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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |