Patent US3614932A successfully refreshed from Google Patents.
US3614932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embankment terracing door for hopper cars
Assignee: Individual
•
Filing: 1968-12-27
•
Granted: 1971-10-26
•
Expires: 1988-12-27
Abstract
Abstract A TERRACING DOOR ASSEMBLY FOR A HOPPER CAR HAVING A LOCKING MEMBER THAT IS ADAPTED TO LOCK THE DOOR IN BOTH ITS CLOSED AND OPEN POSITIONS. WHEN THE DOOR IS CLOSED, THE LOCKING MECHANISM ENGAGES THE TOP AND BOTTOM PORTIONS OF THE DOOR. IN THE OPEN POSITION, THE LOCKING MECHANISM ENGAGES THE BOTTOM PORTION OF THE DOOR. A LATCHING MECHANISM IS PROVIDED TO HOLD THE LOCKING MECHANISM IN ITS LOCKING POSITIONS WITH THE LATCH ARRANGED SO IT CAN SELECTIVELY BE HELD AWAY FROM ENGAGEMENT WITH THE LOCKING MEMBER.
Inventors
- 👤 Sergio Rene Damy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:26
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |