US3337201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum degasser
Assignee: Babcock and Wilcox Co
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Filing: 1964-08-28
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Granted: 1967-08-22
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Expires: 1984-08-28
Abstract
No abstract record available.
Inventors
- 👤 John A Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:41
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10; F; F27; F27B; F27B5/00; F27B5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
APPARATUS FOR DEGASSING MOLTEN METAL COMPRISING, UPRIGHT SIDE WALLS AND A PERMANENTLY AFFIXED ROOF DEFINING AN ENCLOSED DEGASSING CHAMBER, PUMP MEANS CONNECTED WITH SAID CHAMBER FOR EVACUATING SUBSTANTIALLY ALL OF THE ATMOSPHERE THEREFROM TO FORM A VACUUM THEREIN, FURNACE MEANS SPACED FROM SAID CHAMBER, INGOT CASTING MEANS SPACED FROM SAID CHAMBER, A LADLE, MEANS FOR POURING MOLTEN METAL FROM SAID FURNACE MEANS INTO SAID LADLE, MEANS FOR POURING MOLTEN METAL INTO SAID INGOT CASTING MEANS FROM SAID LADLE, A WHEELED CARRIAGE, MEANS FOR PLACING SAID LADLE IN AND REMOVING THE LADLE FROM SAID CARRIAGE, MEANS TO FORM AN OPENING IN SAID CHAMBER SIDE WALL SUFFICIENTLY LARGE SO THAT SAID CARRIAGE HOLDING SAID LADLE CAN BE PASSED THROUGH SAID OPENING, TRACK MEANS ADAPTED FOR THE TRAVEL OF SAID CARRIAGE THEREON AND EXTENDING FROM SAID FURNACE MEANS AND SAID INGOT CASTING MEANS AND INTO SAID CHAMBER THROUGH SAID OPENING, AN INDUCTION STIRRER PERMANENTLY MOUNTED ON SAID CARRIAGE AND CONSTRUCTED AND ARRANGED TO CIRCULATE SAID METAL WITHIN SAID LADLE WHEREBY THE METAL IS EXPOSED TO THE VACUUM WITHIN SAID CHAMBER TO EFFECT DEGASSING, A DETACHABLE CON-
Claim 2
Dependent Claim
183 words
APPARATUS FOR DEGASSING MOLTEN METAL COMPRISING, UPRIGHT SIDE WALLS AND A PERMANENTLY AFFIXED ROOF DEFINING AN ENCLOSED DEGASSING CHAMBER, PUMP MEANS CONNECTED WITH SAID CHAMBER FOR EVACUATING SUBSTANTIALLY ALL OF THE ATMOSPHERE THEREFROM TO FORM A VACUUM THEREIN, FURNACE MEANS SPACED FROM SAID CHAMBER, INGOT CASTING MEANS SPACED FROM SAID CHAMBER, A LADLE, MEANS FOR POURING MOLTEN METAL FROM SAID FURNACE MEANS INTO SAID LADLE, MEANS FOR POURING MOLTEN METAL INTO SAID INGOT CASTING MEANS FROM SAID LADLE, A WHEELED CARRIAGE, MEANS FOR PLACING SAID LADLE IN AND REMOVING THE LADLE FROM SAID CARRIAGE, MEANS TO FORM AN OPENING IN SAID CHAMBER SIDE WALL SUFFICIENTLY LARGE SO THAT SAID CARRIAGE HOLDING SAID LADLE CAN BE PASSED THROUGH SAID OPENING, TRACK MEANS ADAPTED FOR THE TRAVEL OF SAID CARRIAGE THEREON AND EXTENDING FROM SAID FURNACE MEANS AND SAID INGOT CASTING MEANS AND INTO SAID CHAMBER THROUGH SAID OPENING, AN INDUCTION STIRRER PERMANENTLY MOUNTED ON SAID CARRIAGE AND CONSTRUCTED AND ARRANGED TO CIRCULATE SAID METAL WITHIN SAID LADLE WHEREBY THE METAL IS EXPOSED TO THE VACUUM WITHIN SAID CHAMBER TO EFFECT DEGASSING, A DETACHABLE CON-
References Cited (Backward Citations)
GB866928A
Cited
US3255897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |