Patent US3229337A successfully refreshed from Google Patents.
US3229337A
Expired / Lapsed
US
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Furnace ladling apparatus
Assignee: Lindberg Engineering Co
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Filing: 1962-09-24
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Granted: 1966-01-18
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Expires: 1982-09-24
Abstract
No abstract record available.
Inventors
- 👤 Holz George William
- 👤 Hugh E Pollard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:11
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
FURNACE LADLING APPARATUS COMPRISING MEANS DEFINING A CHAMBER ADAPTED TO HOLD MOLTEN METAL AND CLOSED AT ITS TOP, THE CHAMBER HAVING AN INLET FOR MOLTEN METAL, A DISCHARGE TUBE COMMUNICATING WITH THE LOWER PART OF THE CHAMBER AND DISCHARGING OUTSIDE OF THE CHAMBER ABOVE THE MAXIMUM LEVEL OF MOLTEN METAL THEREIN, A FIRST STORAGE TANK TO HOLD A GAS UNDER RELATIVELY HIGH PRESSURE WHICH IS NON-REATIVE WITIH THE MOLTEN METAL, A SECOND STORAGE TANK CONNECTED TO THE FIRST STORAGE TANK TO RECEIVE GAS THEREFROM, AND INCLUDING REGULATING MEANS TO MAINTAIN A LOWER PRESSURES IN THE SECOND STORAGE TANK THAN IN THE FIRST STORAGE TANK, MEANS CONNECTED TO THE STORAGE TANKS AND THE CHAMBER, AND CONTROL MEANS TO ESTABLISH ONE CONDITION IN WHICH THE INLET OF THE PUMP MEANS COMMUNICATES WITH THE CHAMBER AND THE OUTLET WITH THE FIRST STORAGE TANK AND A SECOND CONDITION IN WHICH THE INLET OF THE PUMP MEANS COMMUNICATES WITH THE SECOND STORAGE TANK AND THE OUTLET WITH THE CHAMBER.
Claim 2
Dependent Claim
164 words
FURNACE LADLING APPARATUS COMPRISING MEANS DEFINING A CHAMBER ADAPTED TO HOLD MOLTEN METAL AND CLOSED AT ITS TOP, THE CHAMBER HAVING AN INLET FOR MOLTEN METAL, A DISCHARGE TUBE COMMUNICATING WITH THE LOWER PART OF THE CHAMBER AND DISCHARGING OUTSIDE OF THE CHAMBER ABOVE THE MAXIMUM LEVEL OF MOLTEN METAL THEREIN, A FIRST STORAGE TANK TO HOLD A GAS UNDER RELATIVELY HIGH PRESSURE WHICH IS NON-REATIVE WITIH THE MOLTEN METAL, A SECOND STORAGE TANK CONNECTED TO THE FIRST STORAGE TANK TO RECEIVE GAS THEREFROM, AND INCLUDING REGULATING MEANS TO MAINTAIN A LOWER PRESSURES IN THE SECOND STORAGE TANK THAN IN THE FIRST STORAGE TANK, MEANS CONNECTED TO THE STORAGE TANKS AND THE CHAMBER, AND CONTROL MEANS TO ESTABLISH ONE CONDITION IN WHICH THE INLET OF THE PUMP MEANS COMMUNICATES WITH THE CHAMBER AND THE OUTLET WITH THE FIRST STORAGE TANK AND A SECOND CONDITION IN WHICH THE INLET OF THE PUMP MEANS COMMUNICATES WITH THE SECOND STORAGE TANK AND THE OUTLET WITH THE CHAMBER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |