Patent US3242299A successfully refreshed from Google Patents.
US3242299A
Expired / Lapsed
US
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Inductor for induction heating apparatus
Assignee: Ohio Crankshaft Co
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Filing: 1963-10-17
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Granted: 1966-03-22
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Expires: 1983-10-17
Abstract
No abstract record available.
Inventors
- 👤 John R Laughlin
- 👤 James W Thomas
- 👤 Richard A Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/01; B23K13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN AN INDUCTOR COMPRISING AN ELONGATED CONDUCTOR HAVING A FIRST AND A SECOND END, EACH END BEING CONNECTED ONTO A LEAD-IN CONDUCTOR ANGULARLY DISPOSED WITH RESPECT TO SAID ELONGATED CONDUCTOR, A STACK OF MAGNETIC LAMINAS SUPPORTED ON SAID ELONGATED CONDUCTOR AND EXTENDING BETWEEN SAID ENDS, AND STRUCTURAL ELEMENTS AT BOTH ENDS OF SAID ELONGATED CONDUCTOR FOR COMPRESSING SAID LAMINA STACK INTO A TIGHT UNIT, THE IMPROVEMENT COMPRISING: A BLOCK OF MAGNETICALLY PERMEABLE MATERIAL HAVING HIGH ELECTRICAL RESISTIVITY IN ALL DIRECTIONS BEING LOCATED BETWEEN SAID LAMINA STACK AND SAID STRUCTURAL ELEMENTS AT EACH END OF SAID ELONGATED CONDUCTOR AND A HEAT RESISTANT, RESILIENT BLOCK WITHIN SAID STACK AND INTERMEDIATE THE STRUCTURAL ELEMENTS.
Claim 2
Dependent Claim
111 words
IN AN INDUCTOR COMPRISING AN ELONGATED CONDUCTOR HAVING A FIRST AND A SECOND END, EACH END BEING CONNECTED ONTO A LEAD-IN CONDUCTOR ANGULARLY DISPOSED WITH RESPECT TO SAID ELONGATED CONDUCTOR, A STACK OF MAGNETIC LAMINAS SUPPORTED ON SAID ELONGATED CONDUCTOR AND EXTENDING BETWEEN SAID ENDS, AND STRUCTURAL ELEMENTS AT BOTH ENDS OF SAID ELONGATED CONDUCTOR FOR COMPRESSING SAID LAMINA STACK INTO A TIGHT UNIT, THE IMPROVEMENT COMPRISING: A BLOCK OF MAGNETICALLY PERMEABLE MATERIAL HAVING HIGH ELECTRICAL RESISTIVITY IN ALL DIRECTIONS BEING LOCATED BETWEEN SAID LAMINA STACK AND SAID STRUCTURAL ELEMENTS AT EACH END OF SAID ELONGATED CONDUCTOR AND A HEAT RESISTANT, RESILIENT BLOCK WITHIN SAID STACK AND INTERMEDIATE THE STRUCTURAL ELEMENTS.
References Cited (Backward Citations)
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US2785263A
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US2777041A
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |