US3104623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway hopper car pivoted closure latching mechanism
Assignee: Enterprise Railway Equipment Co
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Filing: 1961-01-18
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Granted: 1963-09-24
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Expires: 1981-01-18
Abstract
No abstract record available.
Inventors
- 👤 George B Dorey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:05
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/62; B65D90/623; B61; B61D; B61D7/00; B61D7/14; B61D7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A RAILWAY HOPPER CAR HAVING A DISCHARGE OPENING AND A DOOR STRUCTURE PIVOTALLY MOUNTED ADJACENT THE UPPER PART OF THE OPENING AND SWINGABLE TO AN OPEN PENDANT POSITION, IN COMBINATION: (A) LATCHING MEANS FOR RETAINING THE DOOR STRUCTURE IN CLOSED POSITION INCLUDING: (1) A BODILY MOVABLE SHAFT, AND (2) SHOULDERED KEEPER MEANS, (B) SAID SHOULDERED KEEPER MEAN INCLUDING END KEEPER MEANS AND INTERMEDIATE KEEPER MEANS, (C) MEANS MOVABLY MOUNTING SAID SHAFT ON SAID DOOR STRUCTURE WITH THE ENDS OF SAID SHAFT PROJECTING BEYOND THE ENDS OF SAID DOOR STRUCTURE, (D) SAID KEEPER MEANS BEING MOUNTED ON THE HOPPER CAR WITH SAID END KEEPER MEANS ENGAGING THE PROJECTING ENDS OF SAID SHAFT AND COOPERATING THEREWITH TO GUIDE SAID PROJECTING ENDS OF SAID SHAFT ALONG PREDETERMINED PATHS DURING THE FINAL CLOSING MOVEMENT OF
Claim 2
Dependent Claim
132 words
IN A RAILWAY HOPPER CAR HAVING A DISCHARGE OPENING AND A DOOR STRUCTURE PIVOTALLY MOUNTED ADJACENT THE UPPER PART OF THE OPENING AND SWINGABLE TO AN OPEN PENDANT POSITION, IN COMBINATION: (A) LATCHING MEANS FOR RETAINING THE DOOR STRUCTURE IN CLOSED POSITION INCLUDING: (1) A BODILY MOVABLE SHAFT, AND (2) SHOULDERED KEEPER MEANS, (B) SAID SHOULDERED KEEPER MEAN INCLUDING END KEEPER MEANS AND INTERMEDIATE KEEPER MEANS, (C) MEANS MOVABLY MOUNTING SAID SHAFT ON SAID DOOR STRUCTURE WITH THE ENDS OF SAID SHAFT PROJECTING BEYOND THE ENDS OF SAID DOOR STRUCTURE, (D) SAID KEEPER MEANS BEING MOUNTED ON THE HOPPER CAR WITH SAID END KEEPER MEANS ENGAGING THE PROJECTING ENDS OF SAID SHAFT AND COOPERATING THEREWITH TO GUIDE SAID PROJECTING ENDS OF SAID SHAFT ALONG PREDETERMINED PATHS DURING THE FINAL CLOSING MOVEMENT OF
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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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |