Patent US3606200A successfully refreshed from Google Patents.
US3606200A
Expired / Lapsed
US
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Tape tension control system with a sensing lever,particularly for magnetic sound recorders
Assignee: Individual
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Filing: 1968-08-23
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Granted: 1971-09-20
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Expires: 1988-08-23
Abstract
Abstract AN APPARATUS FOR REGULATING THE TENSION OF A TAPE MOVING BETWEEN TWO REELS ON A TAPE RECORDER. A SENSING LEVER IS BIASED BY A SPRING TO HOLD A PRESELECTED TENSION ON THE TAPE. IF THE TENSION ON THE TAPE IS ABOVE OR BELOW THE DESIRED VALUE, THE SENSING LEVER MOVES THE FIRST ARM OF A BELL CRANK LEVER, THE SECOND ARM OF WHICH IS CONNECTED TO A VARIABLE FRICTION CLUTCH IN ORDER TO VARY THE SPEED OF THE REEL TO ADJUST THE TAPE TENSION.
Inventors
- 👤 Hubert O Richt
- 👤 Albert Liebl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:16
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |