US3137399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed system for shaft furnaces
Assignee: Vodafone GmbH
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Filing: 1962-06-08
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Granted: 1964-06-16
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Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 Renkes Dieter
- 👤 Brinkmann Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:24
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A SYSTEM FOR FEEDING A SOLID CHARGE, WITH MINIMAL LOSS OF GAS, TO A SHAFT FURNACE HAVING AN UPPER RIM, AND A CENTRAL GAS OFFTAKE PIPE, SAID SYSTEM COMPRISING A CAP JOINING THE UPPER RIM TO THE OFFTAKE PIPE, A DISTRIBUTING PLATE ROTATABLY MOUNTED WITHIN THE FURNACE AND HAVING A CENTRAL APERTURE, A HOLLOW, CYLINDRICAL, VERTICALLY MOVABLE LOCKING MEMBER, AT LEAST THE LOWER PART OF WHICH IS WITHIN THE UPPER PART OF THE FURNACE, SAID LOCKING MEMBER PROVIDING CONDUIT MEANS LEADING FROM THE FURNACE TOWARD THE OUTLET AND DEFINING WITH SAID CAP AND SAID DISTRIBUTING PLATE AN OUTER CHARGE RECEIVING SPACE, MEANS FOR VERTICALLY MOVING SAID LOCKING MEMBER THEREBY TO PROVIDE A PASSAGE FROM SAID SPACE TO THE FURNACE AND MEANS FOR SUPPLYING A SOLID CHARGE TO SAID SPACE.
Claim 2
Independent Claim
129 words
A SYSTEM FOR FEEDING A SOLID CHARGE, WITH MINIMAL LOSS OF GAS, TO A SHAFT FURNACE HAVING AN UPPER RIM, AND A CENTRAL GAS OFFTAKE PIPE, SAID SYSTEM COMPRISING A CAP JOINING THE UPPER RIM TO THE OFFTAKE PIPE, A DISTRIBUTING PLATE ROTATABLY MOUNTED WITHIN THE FURNACE AND HAVING A CENTRAL APERTURE, A HOLLOW, CYLINDRICAL, VERTICALLY MOVABLE LOCKING MEMBER, AT LEAST THE LOWER PART OF WHICH IS WITHIN THE UPPER PART OF THE FURNACE, SAID LOCKING MEMBER PROVIDING CONDUIT MEANS LEADING FROM THE FURNACE TOWARD THE OUTLET AND DEFINING WITH SAID CAP AND SAID DISTRIBUTING PLATE AN OUTER CHARGE RECEIVING SPACE, MEANS FOR VERTICALLY MOVING SAID LOCKING MEMBER THEREBY TO PROVIDE A PASSAGE FROM SAID SPACE TO THE FURNACE AND MEANS FOR SUPPLYING A SOLID CHARGE TO SAID SPACE.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |