Patent US3170609A successfully refreshed from Google Patents.
US3170609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding hopper closure operating and supporting mechanism
Assignee: Enterprise Railway Equipment Co
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Filing: 1964-02-20
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Granted: 1965-02-23
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 George B Dorey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:43
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65D90/58; B65D90/587
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
IN COMBINATION, A HOPPER HAVING A DISCHARGE OPENING AND A SLIDING GATE FOR THE OPENING, A FRAME SUPPORTED BY AND SUPPORTING THE LOWER PORTION OF THE HOPPER AND SUPPORTING SAID GATE, MEANS FOR MOVING SAID GATE INCLUDING A SHAFT JOURNALED IN THE FRAME AND INTERENGAGING PINION AND RACK MEANS ON THE SHAFT AND CONNECTED TO ONE END OF SAID GATE RESPECTIVELY, SAID RACK MEANS INCLUDING LATERALLY SPACED WALLS ADAPTED TO STRADDLE THE PINIONS AND COEXTENSIVE WITH AND EXTENDING BEYOND THE OTHER END OF SAID GATE, GUIDING MEANS FOR THE RACK MEANS INLUDING WALL EXTENDING LATERALLY FROM THE FRAME ACROSS THE PLANE OF THE RACK MEANS, AND PADS ON THE SAID WALLS LYING BETWEEN THE SPACED WALLS OF THE RACK MEANS.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |