US3100250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zone melting apparatus
Assignee: Individual
•
Filing: 1961-04-07
•
Granted: 1963-08-06
•
Expires: 1981-04-07
Abstract
No abstract record available.
Inventors
- 👤 Herczog Andrew
- 👤 Rolf R Haberecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/14; H; H05; H05B; H05B6/00; H05B6/02; H05B6/36; H05B6/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN COMBINATION, AN INDUCTION HEATING COIL CAPABLE OF GENERATING A CONCENTRATED FIELD WITHIN SAID COIL, AND A CONTAINER OF A SIZE TO ALLOW IT TO PASS THROUGH SAID COIL, SAID CONTAINER COMPRISING A PAIR OF TELESCOPED ELONGATED ARCUATE WALLS IN INTIMATE CONTACT WITH EACH OTHER, AND PLATES AT THE ENDS OF SAID INNER WALL AND SAID OUTER WALL OF SAID TELESCOPED WALLS, SAID INNER WALL AND END PLATES BEING OF A MATERIAL NOT AMENABLE TO INDUCTION HEATING AND SAID OUTER WALL AND END PLATES BEING OF A MATERIAL AMENABLE TO INDUCTION HEATING, THE THICKNESS OF SAID OUTER WALL BEING LESS THAN TWICE THE SKIN DEPTH OF THE CURRENT INDUCED IN THE OUTER WALL OF SAID TELESCOPED WALLS.
Claim 2
Dependent Claim
117 words
IN COMBINATION, AN INDUCTION HEATING COIL CAPABLE OF GENERATING A CONCENTRATED FIELD WITHIN SAID COIL, AND A CONTAINER OF A SIZE TO ALLOW IT TO PASS THROUGH SAID COIL, SAID CONTAINER COMPRISING A PAIR OF TELESCOPED ELONGATED ARCUATE WALLS IN INTIMATE CONTACT WITH EACH OTHER, AND PLATES AT THE ENDS OF SAID INNER WALL AND SAID OUTER WALL OF SAID TELESCOPED WALLS, SAID INNER WALL AND END PLATES BEING OF A MATERIAL NOT AMENABLE TO INDUCTION HEATING AND SAID OUTER WALL AND END PLATES BEING OF A MATERIAL AMENABLE TO INDUCTION HEATING, THE THICKNESS OF SAID OUTER WALL BEING LESS THAN TWICE THE SKIN DEPTH OF THE CURRENT INDUCED IN THE OUTER WALL OF SAID TELESCOPED WALLS.
References Cited (Backward Citations)
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Cited
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US2576862A
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US2773923A
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Cited
US2826666A
Cited
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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) | 1966-08-05 | 1967-02-04 | 1967-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-05 | 1971-02-04 | 1971-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-05 | 1975-02-04 | 1975-08-06 | $7700.00 | Window Closed / Lapsed |