US3344237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desposited film transducing apparatus and method op producing the apparatus
Assignee: —
•
Filing: —
•
Granted: 1967-09-26
•
Expires: 1984-09-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:57
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/31; G11B5/3103; G11B5/3106; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49036; Y10T29/49043; Y10T29/49044; Y10T29/49046; Y10T29/4906; Y10T29/49064; Y10T29/49073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A TRANSDUCER HEAD FOR PROVIDING A TRANSDUCING ACTION WITH A MAGNETIC MEDIUM MOVABLE PAST THE HEAD, AN INSULATING MEMBER, A FIRST LAMINATION HAVING MAGNETIC PROPERTIES AND DISPOSED ON THE INSULATING MEMBER IN THE FORM OF A THIN FILM OVER AN EXTENDED AREA OF THE INSLULATING MEMBER, A THIN INSULATOR DISPOSED ON THE FIRST LAMINATION OVER AN AREA EXTENDING FROM A FIRST EDGE OF THE FIRST LAMINATION TO A POSITION APPROACHING BUT NOT REACHING A SECOND EDGE OF THE LAMINATION OPPOSITE TO THE FIRST EDGE, AND A SECOND LAMINATION HAVING MAGNETIC PROPERTIES AND DISPOSED IN THE FORM OF A THIN FILM ON THE THIN INSULATOR AND ON THE FIRST LAMINATION AT THE POSITIONS APPROACING THE SECOND EDGE OF THE FIRST LAMINATION TO FORM A MAGNETIC CIRCUIT AT THE SECOND EDGE AND TO DEFINE A GAP AT THE FIRST EDGE, THE FIRST AND SECOND LAMINATIONS BEING STACKED RELATIVE TO EACH OTHER IN A DIRECTION CORRESPONDING TO THE DIRECTION OF MOVEMENT OF THE MEDIUM.
Claim 2
Dependent Claim
162 words
IN A TRANSDUCER HEAD FOR PROVIDING A TRANSDUCING ACTION WITH A MAGNETIC MEDIUM MOVABLE PAST THE HEAD, AN INSULATING MEMBER, A FIRST LAMINATION HAVING MAGNETIC PROPERTIES AND DISPOSED ON THE INSULATING MEMBER IN THE FORM OF A THIN FILM OVER AN EXTENDED AREA OF THE INSLULATING MEMBER, A THIN INSULATOR DISPOSED ON THE FIRST LAMINATION OVER AN AREA EXTENDING FROM A FIRST EDGE OF THE FIRST LAMINATION TO A POSITION APPROACHING BUT NOT REACHING A SECOND EDGE OF THE LAMINATION OPPOSITE TO THE FIRST EDGE, AND A SECOND LAMINATION HAVING MAGNETIC PROPERTIES AND DISPOSED IN THE FORM OF A THIN FILM ON THE THIN INSULATOR AND ON THE FIRST LAMINATION AT THE POSITIONS APPROACING THE SECOND EDGE OF THE FIRST LAMINATION TO FORM A MAGNETIC CIRCUIT AT THE SECOND EDGE AND TO DEFINE A GAP AT THE FIRST EDGE, THE FIRST AND SECOND LAMINATIONS BEING STACKED RELATIVE TO EACH OTHER IN A DIRECTION CORRESPONDING TO THE DIRECTION OF MOVEMENT OF THE MEDIUM.
References Cited (Backward Citations)
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Cited
US2666187A
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US2668878A
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US2677019A
Cited
US2673896A
Cited
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Cited
US3120001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |