US3081381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transversely scanning transducer with fixed electromagnet and moving pole pieces
Assignee: News Syndicate Co Inc
•
Filing: 1953-12-31
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Granted: 1963-03-12
•
Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 John M P Merry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:24
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/52; G11B5/53; G11B5/538
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THE COMBINATION WITH A TRAVELLING MAGNETIZABLE TAPE, OF MEANS FOR SHAPING A PORTION OF THE TAPE INTO A CYLINDRICALLY CURVED SURFACE HAVING AN AXIS PARALLEL TO THE TAPE AT SOME DISTANCE FROM IT, A DISC-SHAPED WHEEL HAVING ITS AXIS COINCIDENT WITH THE AXIS OF THE CURVED PORTION OF THE TAPE, ELECTROMAGNETS LOCATED AT OPPOSITE SIDES OF THE WHEEL AND EACH HAVING A WIDE CORE CONTAINING A CYLINDRICALLY CURVED SLOT WHOSE AXIS IS COINCIDENT WITH THAT OF THE WHEEL, AND PAIRS OF POLE PIECES MOUNTED ON THE WHEEL PROVIDING GAPS AROUND THE PERIPHERY OF THE WHEEL WHICH
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |