US2997386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for treating metal melts
Assignee: Individual
•
Filing: 1959-06-26
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Granted: 1961-08-22
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Expires: 1979-06-26
Abstract
No abstract record available.
Inventors
- 👤 Feichtinger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:34
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR TREATING METAL MELTS WHICH COMPRISES: INTRODUCING A METAL MELT IN THE FORM OF A JET OF MOLTEN METAL INTO A TREATMENT CHAMBER SUBSTANTIALLY CLOSED FROM THE OUTSIDE ATMOSPHERE, INTRODUCING INTO SAID TREATING CHAMBER A STREAM OF INERT GAS, WHEREBY THERE IS ESTABLISHED IN SAID TREATING CHAMBER, AN INNER ATMOSPHERE OF SAID INERT GAS, SIMULTANEOUSLY ALLOWING SAID INNER ATMOSPHERE OF INERT GAS TO ESCAPE INTO THE OUTER ATMOSPHERE, WITHOUT PERMITTING THE LATTER TO PENETRATE INTO SAID INNER CHAMBER, WHEREBY THERE IS MAINTAINED IN SAID TREATING CHAMBER A SLIGHT OVERPRESSURE OF SAID INERT GAS, FEEDING AT A CONTROLLABLE, CONTINUOUSLY VARIABLE RATE OF SPEED, A STRAND OF METALLIC COMPOSITION, DIRECTLY INTO SAID JET OF MOLTEN METAL, WHEREBY SAID JET IS SPLIT AND DISRUPTED WITHOUT THE NECESSITY OF REQUIRING A VACUUM.
Claim 2
Dependent Claim
130 words
A PROCESS FOR TREATING METAL MELTS WHICH COMPRISES: INTRODUCING A METAL MELT IN THE FORM OF A JET OF MOLTEN METAL INTO A TREATMENT CHAMBER SUBSTANTIALLY CLOSED FROM THE OUTSIDE ATMOSPHERE, INTRODUCING INTO SAID TREATING CHAMBER A STREAM OF INERT GAS, WHEREBY THERE IS ESTABLISHED IN SAID TREATING CHAMBER, AN INNER ATMOSPHERE OF SAID INERT GAS, SIMULTANEOUSLY ALLOWING SAID INNER ATMOSPHERE OF INERT GAS TO ESCAPE INTO THE OUTER ATMOSPHERE, WITHOUT PERMITTING THE LATTER TO PENETRATE INTO SAID INNER CHAMBER, WHEREBY THERE IS MAINTAINED IN SAID TREATING CHAMBER A SLIGHT OVERPRESSURE OF SAID INERT GAS, FEEDING AT A CONTROLLABLE, CONTINUOUSLY VARIABLE RATE OF SPEED, A STRAND OF METALLIC COMPOSITION, DIRECTLY INTO SAID JET OF MOLTEN METAL, WHEREBY SAID JET IS SPLIT AND DISRUPTED WITHOUT THE NECESSITY OF REQUIRING A VACUUM.
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |