US3352991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for melting metals by induction heating
Assignee: Individual
•
Filing: 1965-03-09
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Granted: 1967-11-14
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Expires: 1985-03-09
Abstract
No abstract record available.
Inventors
- 👤 Clites Philip Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:06
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/22; H05B6/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
INDUCTIVE HEATING APPARATUS COMPRISING SOLENOIDAL WORK COIL MEANS, A RADIOFREQUENCY POWER SOURCE ADAPTED TO ENERGIZE SAID COIL MEANS, A CONDUCTIVE SLEEVE ELEMENT DISPOSED WITHIN SAID WORK COIL, PROVIDED WITH A LONGITUDINAL SLIT AND INCLUDING A CONSTRICTED MEDICAL PORTION FOR CONCENTRATING FLUX FROM SAID COIL, SAID MEDIAL PORTION PROVIDING AN INTENSIFIED HEATING ZONE WITHIN SAID SLEEVE, COLD CRUCIBLE MOLD MEANS DEFINED ADJACENT SAID HEATING ZONE, MEANS FOR FEEDING A CONDUCTIVE MATERIAL TO BE MELTED INTO SAID HEATING ZONE TO ACCUMULATE IN SAID MOLD MEANS OUT OF PHYSICAL AND ELECTRICAL CONDUCTIVE CONTACT ACROSS SAID SLIT IN SAID CONDUCTIVE SLEEVE FLUX CONCENTRATOR.
Claim 2
Dependent Claim
99 words
INDUCTIVE HEATING APPARATUS COMPRISING SOLENOIDAL WORK COIL MEANS, A RADIOFREQUENCY POWER SOURCE ADAPTED TO ENERGIZE SAID COIL MEANS, A CONDUCTIVE SLEEVE ELEMENT DISPOSED WITHIN SAID WORK COIL, PROVIDED WITH A LONGITUDINAL SLIT AND INCLUDING A CONSTRICTED MEDICAL PORTION FOR CONCENTRATING FLUX FROM SAID COIL, SAID MEDIAL PORTION PROVIDING AN INTENSIFIED HEATING ZONE WITHIN SAID SLEEVE, COLD CRUCIBLE MOLD MEANS DEFINED ADJACENT SAID HEATING ZONE, MEANS FOR FEEDING A CONDUCTIVE MATERIAL TO BE MELTED INTO SAID HEATING ZONE TO ACCUMULATE IN SAID MOLD MEANS OUT OF PHYSICAL AND ELECTRICAL CONDUCTIVE CONTACT ACROSS SAID SLIT IN SAID CONDUCTIVE SLEEVE FLUX CONCENTRATOR.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |