US3099699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for degassing molten steel
Assignee: WC Heraus GmbH and Co KG
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Filing: 1960-09-02
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Granted: 1963-07-30
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Expires: 1980-09-02
Abstract
No abstract record available.
Inventors
- 👤 Breuing Wilhelm
- 👤 Franke Ernst Peter
- 👤 Spolders Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:51
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A CONTINUOUS RECYLING DEVICE FOR TEH VACUUM DEGASSIFICATION OF MOLTEN METAL AND HAVING AS ELEMENTS VACUUM DEGASSING CHAMBER MEANS, A LOWER POSITIONED CONTAINER FOR HOLDING MOLTEN METAL, RISER CONDUIT TO SAID FOR CONVEYING MOLTEN METAL FROM SAID CONTAINER TO SAID CHAMBER MEANS, DISCHARGE CONDUIT MEANS FOR DISCHARGING MOLTEN METAL FROM SAID CHAMBER MEANS INTO SAID CONTAINER, AND MEANS FOR FORCING GAS BUBBLES INTO AND THROUGH SAID RISER CONDUIT MEANS, SAID RISER AND SAID DISCHARGE CONDUIT MEANS BEING WITH THEIR IMMERSION ENDS ARRANGED IN NON-CONCENTRIC SEPARATE AND SPACED RELATION, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION WITH SAID ELEMENTS SUCH DISCHARGE AND RISER CONDUIT MEANS IN WHICH THE CROSS-SECTIONAL AREA OF SAID DISCHARGE MEANS IS APPRECIABLY SMALLER THAN THAT OF SAID RISER MEANS.
Claim 2
Dependent Claim
122 words
IN A CONTINUOUS RECYLING DEVICE FOR TEH VACUUM DEGASSIFICATION OF MOLTEN METAL AND HAVING AS ELEMENTS VACUUM DEGASSING CHAMBER MEANS, A LOWER POSITIONED CONTAINER FOR HOLDING MOLTEN METAL, RISER CONDUIT TO SAID FOR CONVEYING MOLTEN METAL FROM SAID CONTAINER TO SAID CHAMBER MEANS, DISCHARGE CONDUIT MEANS FOR DISCHARGING MOLTEN METAL FROM SAID CHAMBER MEANS INTO SAID CONTAINER, AND MEANS FOR FORCING GAS BUBBLES INTO AND THROUGH SAID RISER CONDUIT MEANS, SAID RISER AND SAID DISCHARGE CONDUIT MEANS BEING WITH THEIR IMMERSION ENDS ARRANGED IN NON-CONCENTRIC SEPARATE AND SPACED RELATION, THE IMPROVEMENT WHICH COMPRISES, IN COMBINATION WITH SAID ELEMENTS SUCH DISCHARGE AND RISER CONDUIT MEANS IN WHICH THE CROSS-SECTIONAL AREA OF SAID DISCHARGE MEANS IS APPRECIABLY SMALLER THAN THAT OF SAID RISER 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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |