US3277244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recorder-reproducer
Assignee: International Business Machines Corp
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Filing: 1962-07-17
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Granted: 1966-10-04
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Expires: 1982-07-17
Abstract
No abstract record available.
Inventors
- 👤 William T Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:10
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/86; G11B5/865
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
APPARATUS FOR RECORDING OR REPRODUCING MAGNETIC INFORMATION ON A RECORD MEMBER HAVING A SURFACE OF MAGNETIZABLE ELEMENTS WITH RANDOM ORIENTATION COMPRISING AN ENDLESS MAGNETIZABLE TRANSFER MEDIUM HAVING A SURFACE OF MAGNETIZABLE ELEMENTS EACH ORIENTED IN A PREDETERMINED DIRECTION; MEANS FOR TRANSPORTING THE MAGNETIC RECORD MEMBER AND SAID TRANSFER MEDIUM IN JUXTAPOSED RELATIONSHIP ALONG A PATH INCLUDING A PORTION OF SAID TRANSFER MEDIUM; TRANSDUCER MEANS, COOPERATIVELY POSITIONED WITH ANOTHER PORTION OF SAID TRANSFER MEDIUM FOR SELECTIVELY RECORDING OR REPRODUCING MAGNETIC INFORMATION ON SAID TRANSFER MEDIUM; FIRST TRANSFER MEANS, INCLUDING BIASING MEANS FOR PROVIDING A FLUX FIELD PERPENDICULAR TO SAID PREDETERMINED DIRECTION, COOPERATIVELY POSITIONED WITH RESPECT TO SAID TRANSFER MEDIUM AND THE ROD MEMBER ALONG SAID JUXTAPOSED PATH FOR TRANSFERRING MAGNETIC INFORMATION, PREVIOUSLY RECORDED ON SAID TRANSFER MEDIUM BY SAID TRANSDUCER, TO THE RECORD MEMBER; AND SECOND TRANSFER MEANS, INCLUDING BIASING MEANS FOR PROVIDING A FLUX FIELD PARALLEL TO SAID PREDETERMINED DIRECTION COOPERATIVELY POSITIONED WITH RESPECT TO SAID TRANSFER MEDIUM AND THE RECORD MEMBER ALONG SAID JUXTAPOSED PATH FOR TRANSFERRING MAGNETIC INFORMATION, PREVIOUSLY RECORDED ON THE RECORD MEMBER, TO SAID TRANSFER MEDIUM FOR SUBSEQUENT REPRODUCTION BY SAID TRANSDUCER MEANS.
Claim 2
Dependent Claim
187 words
APPARATUS FOR RECORDING OR REPRODUCING MAGNETIC INFORMATION ON A RECORD MEMBER HAVING A SURFACE OF MAGNETIZABLE ELEMENTS WITH RANDOM ORIENTATION COMPRISING AN ENDLESS MAGNETIZABLE TRANSFER MEDIUM HAVING A SURFACE OF MAGNETIZABLE ELEMENTS EACH ORIENTED IN A PREDETERMINED DIRECTION; MEANS FOR TRANSPORTING THE MAGNETIC RECORD MEMBER AND SAID TRANSFER MEDIUM IN JUXTAPOSED RELATIONSHIP ALONG A PATH INCLUDING A PORTION OF SAID TRANSFER MEDIUM; TRANSDUCER MEANS, COOPERATIVELY POSITIONED WITH ANOTHER PORTION OF SAID TRANSFER MEDIUM FOR SELECTIVELY RECORDING OR REPRODUCING MAGNETIC INFORMATION ON SAID TRANSFER MEDIUM; FIRST TRANSFER MEANS, INCLUDING BIASING MEANS FOR PROVIDING A FLUX FIELD PERPENDICULAR TO SAID PREDETERMINED DIRECTION, COOPERATIVELY POSITIONED WITH RESPECT TO SAID TRANSFER MEDIUM AND THE ROD MEMBER ALONG SAID JUXTAPOSED PATH FOR TRANSFERRING MAGNETIC INFORMATION, PREVIOUSLY RECORDED ON SAID TRANSFER MEDIUM BY SAID TRANSDUCER, TO THE RECORD MEMBER; AND SECOND TRANSFER MEANS, INCLUDING BIASING MEANS FOR PROVIDING A FLUX FIELD PARALLEL TO SAID PREDETERMINED DIRECTION COOPERATIVELY POSITIONED WITH RESPECT TO SAID TRANSFER MEDIUM AND THE RECORD MEMBER ALONG SAID JUXTAPOSED PATH FOR TRANSFERRING MAGNETIC INFORMATION, PREVIOUSLY RECORDED ON THE RECORD MEMBER, TO SAID TRANSFER MEDIUM FOR SUBSEQUENT REPRODUCTION BY SAID TRANSDUCER MEANS.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |