Patent US3129398A successfully refreshed from Google Patents.
US3129398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printed coil with removable core support and core
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1962-01-02
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Granted: 1964-04-14
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Lheureux Claude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:01
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06; H01F17/00; H01F17/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
AN ADJUSTABLE INDUCTANCE COMPRISING: A MOUNTING BOARD COMPRISED OF AN ELECTRICAL INSULATING MATERIAL AND INCLUDING AN APERTURE AND AN EDGE, AN ELECTRICAL INDUCTOR COMPRISED OF A PRINTED WIRE POSITIONED ON SAID MOUNTING BOARD AND ARRANGED IN A LOOP OF MULTIPLE TURNS IN A SAME PLANE, A CYLINDRICAL SHAPED MAGNETIC CORE INCLUDING A THREADED PORTION ON AN OUTER SURFACE OF SAID CORE, AND A SUPPORT FOR SAID CORE CENTERED WITH RESPECT TO SAID LOOP AND HAVING A SUBSTANTIAL PORTION THEREOF DISPOSED ABOVE SAID PLANE OF SAID LOOP, SAID SUPPORT INCLUDING A USHAPED SECTION ENGAGING SAID EDGE OF SAID BOARD, A LUG PORTION HAVING A SURFACE BINDING SAID SUPPORT TO SAID BOARD WHEN SAID LUG ENGAGES SAID APERTURE, AND A THREADED CYLINDRICAL RECESS, SAID CYLINDRICAL RECESS BEING DISPOSED ABOVE SAID PLANE OF SAID LOOP AND RECEIVING SAID CORE FOR ADJUSTABLE POSITIONING OF SAID CORE RELATIVE TO SAID WIRE LOOP.
Claim 2
Dependent Claim
147 words
AN ADJUSTABLE INDUCTANCE COMPRISING: A MOUNTING BOARD COMPRISED OF AN ELECTRICAL INSULATING MATERIAL AND INCLUDING AN APERTURE AND AN EDGE, AN ELECTRICAL INDUCTOR COMPRISED OF A PRINTED WIRE POSITIONED ON SAID MOUNTING BOARD AND ARRANGED IN A LOOP OF MULTIPLE TURNS IN A SAME PLANE, A CYLINDRICAL SHAPED MAGNETIC CORE INCLUDING A THREADED PORTION ON AN OUTER SURFACE OF SAID CORE, AND A SUPPORT FOR SAID CORE CENTERED WITH RESPECT TO SAID LOOP AND HAVING A SUBSTANTIAL PORTION THEREOF DISPOSED ABOVE SAID PLANE OF SAID LOOP, SAID SUPPORT INCLUDING A USHAPED SECTION ENGAGING SAID EDGE OF SAID BOARD, A LUG PORTION HAVING A SURFACE BINDING SAID SUPPORT TO SAID BOARD WHEN SAID LUG ENGAGES SAID APERTURE, AND A THREADED CYLINDRICAL RECESS, SAID CYLINDRICAL RECESS BEING DISPOSED ABOVE SAID PLANE OF SAID LOOP AND RECEIVING SAID CORE FOR ADJUSTABLE POSITIONING OF SAID CORE RELATIVE TO SAID WIRE LOOP.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |