Patent US3377059A successfully refreshed from Google Patents.
US3377059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary hearth metal melting furnaces
Assignee: Individual
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Filing: 1965-12-27
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Granted: 1968-04-09
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Ankersen Borge Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:02
CPC Classifications
F; F27; F27B; F27B3/00; F27B3/06; F27B3/10; F27B3/18; F27B9/00; F27B9/14; F27B9/16; F27D; F27D3/00; F27D2003/0034; F27D2003/0083; F27D99/00; F27D99/0001; F27D99/0033; F27D2099/004; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A METAL MELTING FURNACE COMPRISING A HEARTH WITH UPSTANDING SIDEWALLS ROTATABLE ABOUT A VERTICAL AXIS AND ADAPTED TO CONTAIN A MOLTEN LIQUID BATH, MEANS FOR ROTATING SAID HEARTH ABOUT SAID VERTICAL AXIS, A ROOF SUPPORTED ABOVE THE HEARTH AND VERTICALLY MOVABLE WITH RESPECT TO SAID HEARTH WITHIN THE UPSTANDING SIDEWALLS WHEREBY THE DISTANCE FROM ROOF TO HEARTH MAY BE SELECTIVELY ADJUSTED, AN OPENING IN SAID ROOF HAVING A PORTION ADJACENT THE AXIS FOR PASSING A METAL CHARGE TO THE HEARTH, RADIALLY EXTENDING BLADE MEANS DEPENDING FROM SAID ROOF ADAPTED TO EXTEND BELOW THE ROOF INTO THE LIQUID BATH TO CAUSE FLOW OF MOLTEN LIQUID RADIALLY ACROSS THE BATH TO THE CENTER THEREOF, A BURNER IN SAID ROOF SPACED FROM SAID OPENING AND ACTING ONTO THE MOLTEN BATH AND FLUE MEANS SPACED FROM THE BURNER MEANS FOR REMOVAL OF COMBUSTION GASES.
Claim 2
Dependent Claim
140 words
A METAL MELTING FURNACE COMPRISING A HEARTH WITH UPSTANDING SIDEWALLS ROTATABLE ABOUT A VERTICAL AXIS AND ADAPTED TO CONTAIN A MOLTEN LIQUID BATH, MEANS FOR ROTATING SAID HEARTH ABOUT SAID VERTICAL AXIS, A ROOF SUPPORTED ABOVE THE HEARTH AND VERTICALLY MOVABLE WITH RESPECT TO SAID HEARTH WITHIN THE UPSTANDING SIDEWALLS WHEREBY THE DISTANCE FROM ROOF TO HEARTH MAY BE SELECTIVELY ADJUSTED, AN OPENING IN SAID ROOF HAVING A PORTION ADJACENT THE AXIS FOR PASSING A METAL CHARGE TO THE HEARTH, RADIALLY EXTENDING BLADE MEANS DEPENDING FROM SAID ROOF ADAPTED TO EXTEND BELOW THE ROOF INTO THE LIQUID BATH TO CAUSE FLOW OF MOLTEN LIQUID RADIALLY ACROSS THE BATH TO THE CENTER THEREOF, A BURNER IN SAID ROOF SPACED FROM SAID OPENING AND ACTING ONTO THE MOLTEN BATH AND FLUE MEANS SPACED FROM THE BURNER MEANS FOR REMOVAL OF COMBUSTION GASES.
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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |