US3126456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guckenburg
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
•
Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:23
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
MAGNETIC RECORDING APPARATUS COMPRISING MEANS DEFININ A TAPE TRANSPORT PATH FOR TAPE HAVING A MAGNETIC COATING ON AT LEAST ONE SURFACE, SEPARATE, SIDE BY SIDE MAGNETIC MEMBERS HAVING SHORT SURFACES DISPOSED ADJACENT AND GENERALLY PARALLEL TO A PORTION OF SAID TAPE TRANSPORT PATH ON THE SIDE ADJACENT TO THE COATED TAPE SURFACE PARALLEL TO THE PLANE OF SAID COATED TAPE SURFACE AND IN CONTACT THEREWITH AND HAVING OPPPOSED EDGES DEFINNG A GAP TRANSVERSE AND NORMAL TO SAID PATH, CORE MEANS ON THE OTHER SIDE OF SAID PATH HAVING A POLE PIECE PORTION IN CLOSE PROXIMITY TO SAID GAP AND OTHER PORTIONS ALL SPACED FARTHER AWAY FROM SAID GAP, AND WINDING MEANS TO SAID CORE MEANS CONSTITUTING THE SOLE SOURCE OF MAGNETOMOTIVE FORCE FOR ESTABLISHING A RECORDING MAGNETIC FIELD IN SAID TAPE TRANSPORT PATH IN THE ENVIRONS OF SAID GAP IN WHICH BOTH THE RATE OF FALL OF FIELD STRENGTH IN A DIRECTION AWAY FROM THE PLANE OF SAID SHORT SURFACES, AND THE FIELD COMPONENT NORMAL TO THE PLANE OF SAID SURFACE ARE REDUCED.
Claim 2
Dependent Claim
173 words
MAGNETIC RECORDING APPARATUS COMPRISING MEANS DEFININ A TAPE TRANSPORT PATH FOR TAPE HAVING A MAGNETIC COATING ON AT LEAST ONE SURFACE, SEPARATE, SIDE BY SIDE MAGNETIC MEMBERS HAVING SHORT SURFACES DISPOSED ADJACENT AND GENERALLY PARALLEL TO A PORTION OF SAID TAPE TRANSPORT PATH ON THE SIDE ADJACENT TO THE COATED TAPE SURFACE PARALLEL TO THE PLANE OF SAID COATED TAPE SURFACE AND IN CONTACT THEREWITH AND HAVING OPPPOSED EDGES DEFINNG A GAP TRANSVERSE AND NORMAL TO SAID PATH, CORE MEANS ON THE OTHER SIDE OF SAID PATH HAVING A POLE PIECE PORTION IN CLOSE PROXIMITY TO SAID GAP AND OTHER PORTIONS ALL SPACED FARTHER AWAY FROM SAID GAP, AND WINDING MEANS TO SAID CORE MEANS CONSTITUTING THE SOLE SOURCE OF MAGNETOMOTIVE FORCE FOR ESTABLISHING A RECORDING MAGNETIC FIELD IN SAID TAPE TRANSPORT PATH IN THE ENVIRONS OF SAID GAP IN WHICH BOTH THE RATE OF FALL OF FIELD STRENGTH IN A DIRECTION AWAY FROM THE PLANE OF SAID SHORT SURFACES, AND THE FIELD COMPONENT NORMAL TO THE PLANE OF SAID SURFACE ARE REDUCED.
References Cited (Backward Citations)
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US2854524A
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US2873319A
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US2987583A
Cited
US2932697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |