US3092682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submerged resistor type induction furnaces and methods and processes therefor
Assignee: Park Ohio Holdings Corp
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Filing: 1960-03-24
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Granted: 1963-06-04
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Expires: 1980-03-24
Abstract
No abstract record available.
Inventors
- 👤 Tama Manuel
- 👤 Wilbur E Shearman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:40
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/16; H05B6/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A METHOD FOR MELTING METALS IN A TWIN COIL INDUCTION FURNACE HAVING A HEARTH, A SECONDARY MELTING LOOP OPENING INTO SAID HEARTH, A PRIMARY TRANSFORMER ASSEMBLY THREADING SAID LOOP, SAID LOOP HAVING A CENTRAL CHANNEL, A BOTTON CHANNEL, AND A PAIR OF OPPOSITELY SPACED LATERAL CHANNELS, WHICH CONSISTS IN PLACING A CHARGE OF METAL WITHIN THE HEARTH, MOVING SAID METAL FROM THE HEARTH FIRST AT A RELATIVELY LOW TEMPERATURE OF THE MOLTEN METAL THROUGH THE SAID CENTRAL CHANNEL AND THEN BACK INTO THE HEARTH THROUGH THE LATERAL CHANNELS AT RELATIVELY INCREASED MELTING TEMPERATURES OF THE MOLTEN METAL THEREIN.
Claim 2
Dependent Claim
99 words
IN A METHOD FOR MELTING METALS IN A TWIN COIL INDUCTION FURNACE HAVING A HEARTH, A SECONDARY MELTING LOOP OPENING INTO SAID HEARTH, A PRIMARY TRANSFORMER ASSEMBLY THREADING SAID LOOP, SAID LOOP HAVING A CENTRAL CHANNEL, A BOTTON CHANNEL, AND A PAIR OF OPPOSITELY SPACED LATERAL CHANNELS, WHICH CONSISTS IN PLACING A CHARGE OF METAL WITHIN THE HEARTH, MOVING SAID METAL FROM THE HEARTH FIRST AT A RELATIVELY LOW TEMPERATURE OF THE MOLTEN METAL THROUGH THE SAID CENTRAL CHANNEL AND THEN BACK INTO THE HEARTH THROUGH THE LATERAL CHANNELS AT RELATIVELY INCREASED MELTING TEMPERATURES OF THE MOLTEN METAL THEREIN.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |