Patent US3145894A successfully refreshed from Google Patents.
US3145894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recorder
Assignee: Sony Corp
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Filing: 1962-04-09
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Granted: 1964-08-25
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Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Nagaoka Kazuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:41
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/29; G11B15/02; G11B15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A MAGNETIC TAGE RECORDER COMPRISING TAPE DRIVING MEANS CONSISTING OF A PINCH-ROLLER AND A CAPSTAN COOPERATING WITH EACH OTHER, SAID PINCH-ROLLER HAVING AN AXIS OF ROTATION SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID CAPSTAN BUT BEING DISPOSED APART FROM SAID CAPSTAN IN A DIFFERENT LEVEL FROM THAT OF SAID CAPSTAN WHEN A MAGNETIC TAPE IS HELD UNDRIVEN, AND MEANS FOR SHIFTING SAID PINCH-ROLLER TO THE LEVEL OF SAID CAPSTAN AND SIMULTANEOUSLY MOVING SAID PINCH-ROLLER TOWARDS SAID CAPSTAN WHILE AT ALL TIMES MAINTAINING THE AXIS OF ROTATION OF SAID PINCHROLLER PARALLEL TO THE AXIS OF THE CAPSTAN TO MAKE CONTACT THEREWITH WHEN SAID MAGNETIC TAPE IS DRIVEN.
Claim 2
Dependent Claim
108 words
A MAGNETIC TAGE RECORDER COMPRISING TAPE DRIVING MEANS CONSISTING OF A PINCH-ROLLER AND A CAPSTAN COOPERATING WITH EACH OTHER, SAID PINCH-ROLLER HAVING AN AXIS OF ROTATION SUBSTANTIALLY PARALLEL TO THE AXIS OF ROTATION OF SAID CAPSTAN BUT BEING DISPOSED APART FROM SAID CAPSTAN IN A DIFFERENT LEVEL FROM THAT OF SAID CAPSTAN WHEN A MAGNETIC TAPE IS HELD UNDRIVEN, AND MEANS FOR SHIFTING SAID PINCH-ROLLER TO THE LEVEL OF SAID CAPSTAN AND SIMULTANEOUSLY MOVING SAID PINCH-ROLLER TOWARDS SAID CAPSTAN WHILE AT ALL TIMES MAINTAINING THE AXIS OF ROTATION OF SAID PINCHROLLER PARALLEL TO THE AXIS OF THE CAPSTAN TO MAKE CONTACT THEREWITH WHEN SAID MAGNETIC TAPE IS DRIVEN.
References Cited (Backward Citations)
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US2876005A
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US3080101A
Cited
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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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |