US3084227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape transducer
Assignee: GTE Sylvania Inc
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Filing: 1959-09-29
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Granted: 1963-04-02
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Expires: 1979-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/49; G11B5/4907; G11B5/127; G11B5/1278; H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A TRANSDUCER FOR INTERACTION WITH A MAGNETIZABLE MEDIUM COMPRISING, A FLAT SUPPORT MEMBER FORMED OF DIELECTRIC MATERIAL ARRANGED ON ONE SIDE OF THE MAGNETIZABLE MEDIUM, A THIN COATING OF MAGNETIC PERMEABLE MATERIAL ON A NARROW STRIP PORTION OF SAID MEMBER, MAGNETIC PERMEABLE MEMBERS ON SAID SUPPORT MAGNETICALLY COUPLED TO SAID COATING OF MAGNETIC PERMEABLE MATERIAL, MEANS MAGNETICALLY COUPLED TO THE ENDS OF SAID MEMBERS FOR PRODUCING OPPOSING MAGNETIC FIELDS IN SAID COATING OF SUFFICIENT INTENSITY TO SATURATE THE MATERIAL OF SAID COATING EVERYWHERE EXCEPT AROUND A NARROW REGION WHERE THE FIELDS CANCEL TO THEREBY PRODUCE IN SAID COATING A NARROW HIGH PERMEABILITY REGION, MEANS FOR SHIFTING THE POSITION OF SAID HIGH PERMEABILITY REGION, AND A SIGNAL PROBE ARRANGED ON THE OTHER SIDE OF THE MAGNETIZABLE MEDIUM AND INCLUDING A SECOND SUPPORT MEMBER FORMED OF DIELECTRIC MATERIAL HAVING A COVERING OF MAGNETIC PERMEABLE MATERIAL ON PORTIONS THEREOF TO DEFINE A MAGNETIC CIRCUIT HAVING AN ELONGATED AIR GAP, SAID SECOND SUPPORT BEING DISPOSED TO POSITION SAID AIR GAP IN CONFRONTING RELATIONSHIP WITH SAID STRIP PORTION AND CLOSELY PARALLEL THERETO.
Claim 2
Dependent Claim
177 words
A TRANSDUCER FOR INTERACTION WITH A MAGNETIZABLE MEDIUM COMPRISING, A FLAT SUPPORT MEMBER FORMED OF DIELECTRIC MATERIAL ARRANGED ON ONE SIDE OF THE MAGNETIZABLE MEDIUM, A THIN COATING OF MAGNETIC PERMEABLE MATERIAL ON A NARROW STRIP PORTION OF SAID MEMBER, MAGNETIC PERMEABLE MEMBERS ON SAID SUPPORT MAGNETICALLY COUPLED TO SAID COATING OF MAGNETIC PERMEABLE MATERIAL, MEANS MAGNETICALLY COUPLED TO THE ENDS OF SAID MEMBERS FOR PRODUCING OPPOSING MAGNETIC FIELDS IN SAID COATING OF SUFFICIENT INTENSITY TO SATURATE THE MATERIAL OF SAID COATING EVERYWHERE EXCEPT AROUND A NARROW REGION WHERE THE FIELDS CANCEL TO THEREBY PRODUCE IN SAID COATING A NARROW HIGH PERMEABILITY REGION, MEANS FOR SHIFTING THE POSITION OF SAID HIGH PERMEABILITY REGION, AND A SIGNAL PROBE ARRANGED ON THE OTHER SIDE OF THE MAGNETIZABLE MEDIUM AND INCLUDING A SECOND SUPPORT MEMBER FORMED OF DIELECTRIC MATERIAL HAVING A COVERING OF MAGNETIC PERMEABLE MATERIAL ON PORTIONS THEREOF TO DEFINE A MAGNETIC CIRCUIT HAVING AN ELONGATED AIR GAP, SAID SECOND SUPPORT BEING DISPOSED TO POSITION SAID AIR GAP IN CONFRONTING RELATIONSHIP WITH SAID STRIP PORTION AND CLOSELY PARALLEL THERETO.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |