US3139489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape stabilizing means
Assignee: Ampex Corp
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Filing: 1960-04-11
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Granted: 1964-06-30
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Expires: 1980-04-11
Abstract
No abstract record available.
Inventors
- 👤 Reginald T Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A TRANSDUCER ARRANGEMENT FOR A PLIANT MOVABLE MAGNETIC TAPE COMPRISING: A SUPPORT MEANS FOR SAID TAPE; A MAGNETIC TRANSDUCER ELEMENT DISPOSED IN CONTIGUOUS RELATION WITH SAID TAPE; A PAIR OF FLANGE ELEMENTS ARRANGED IN PARALLEL WITH A PREDETERMINED PLANE AND PRESENTING A PAIR OF TAPE-ENGAGING EDGES CONFORMING TO A CURVED CYLINDRICAL SURFACE NORMAL TO SAID PLANE, EACH OF SAID FLANGE ELEMENTS BEING MOUNTED ADJACENT TO A DIFFERENT SIDE OF SAID TRANSDUCER ELEMENT AND PROTRUDING A SUBSTANTIAL DISTANCE FROM SAID SUPPORT MEANS; MEANS FOR GUIDING SAID TAPE TO AND FROM SAID SUPPORT MEANS AND FLANGE ELEMENTS WITH SAID PLANE AT A SUBSTANTIAL ANGLE TO EVERY TRANSVERSE PLANE OF SAID TAPE; AND MEANS FOR TENSIONING THE ENDS OF SAID TAPE ON EITHER SIDE OF SAID PAIR OF FLANGE ELEMENTS SUCH THAT WHEN SAID MAGNETIC TAPE IS MOVING ALONG SAID SUPPORT MEANS, SAID TAPE IS SUBJECTED TO LOCALIZED TENSIONING OVER SAID TRANSDUCER ELEMENT.
Claim 2
Dependent Claim
150 words
A TRANSDUCER ARRANGEMENT FOR A PLIANT MOVABLE MAGNETIC TAPE COMPRISING: A SUPPORT MEANS FOR SAID TAPE; A MAGNETIC TRANSDUCER ELEMENT DISPOSED IN CONTIGUOUS RELATION WITH SAID TAPE; A PAIR OF FLANGE ELEMENTS ARRANGED IN PARALLEL WITH A PREDETERMINED PLANE AND PRESENTING A PAIR OF TAPE-ENGAGING EDGES CONFORMING TO A CURVED CYLINDRICAL SURFACE NORMAL TO SAID PLANE, EACH OF SAID FLANGE ELEMENTS BEING MOUNTED ADJACENT TO A DIFFERENT SIDE OF SAID TRANSDUCER ELEMENT AND PROTRUDING A SUBSTANTIAL DISTANCE FROM SAID SUPPORT MEANS; MEANS FOR GUIDING SAID TAPE TO AND FROM SAID SUPPORT MEANS AND FLANGE ELEMENTS WITH SAID PLANE AT A SUBSTANTIAL ANGLE TO EVERY TRANSVERSE PLANE OF SAID TAPE; AND MEANS FOR TENSIONING THE ENDS OF SAID TAPE ON EITHER SIDE OF SAID PAIR OF FLANGE ELEMENTS SUCH THAT WHEN SAID MAGNETIC TAPE IS MOVING ALONG SAID SUPPORT MEANS, SAID TAPE IS SUBJECTED TO LOCALIZED TENSIONING OVER SAID TRANSDUCER ELEMENT.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |