Patent US3606201A successfully refreshed from Google Patents.
US3606201A
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Constant speed,constant tension tape transport
Assignee: Unisys Corp
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Filing: 1969-07-15
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Granted: 1971-09-20
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Expires: 1989-07-15
Abstract
Abstract THE INSTANT INVENTION RELATES TO A CONSTANT SPEED TAPE TRANSPORT SYSTEM WHICH UTILIZES A MINIMUM OF TWO MOTORS IN THE TAPE DRIVE MECHANISM AND TWO CLOSED LOOP SERVO SYSTEMS COMPRISING A VELOCITY LOOP AND A TENSION LOOP. BOTH LOOPS ARE ACTIVE IN BOTH THE STATIC AND DYNAMIC STATES OF THE SYSTEM. A SIGNAL IS GENERATED IN THE TENSION LOOP IN EITHER STATE FOR MAINTAINING APPROXIMATELY EQUAL TENSION IN THE TAPE DESPITE UNEQUAL TAPE RADII ON THE ASSOCIATED TAPE REELS.
Inventors
- 👤 Neil J Petusky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:27
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44
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 |