US3109604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape tension system
Assignee: Ampex Corp
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Filing: 1960-11-07
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Granted: 1963-11-05
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Expires: 1980-11-07
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Brenner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
149 words
A DRIVE SYSTEM FOR A REEL HAVING A PACK OF TAPE COILED THEREON COMPRISING: A MOTOR HAVING A DRIVE SHAFT; MEANS FOR ENERGIZING THE MOTOR TO ROTATE THE DRIVE SHAFT; A ROTATABLE TURNTABLE HAVING SAID REEL MOUNTED THEREON WITH THE OUTER END OF SAID TAPE EXTENDING TANGENTIALLY FROM THE PERIPHERY OF SAID PACK; VARIABLE MEANS FOR COUPLING THE DRIVE SHAFT TO THE TURNTABLE; A TAPE GUIDE MEMBER SPACED FROM SAID REEL AND ENGAGING SAID OUTER END OF TAPE TO DEFINE A SEGMENT OF TAPE BETWEEN SAID GUIDE MEMBER AND SAID PACK; PHOTOELECTRIC MEANS MOUNTED BETWEEN SAID GUIDE MEMBER AND SAID PACK FOR SENSING THE LATERAL DISPLACEMENT OF SAID TAPE SEGMENT AND FOR DEVELOPING A SIGNAL THAT IS A CONTINUOUS FUNCTION OF THE AMOUNT OF TAPE ON SAID REEL; AND MEANS FOR APPLYING THE SIGNAL TO THE VARIABLE MEANS FOR CONTROLLING THE TORQUE APPLIED TO THE TURNTABLE BY THE MOTOR.
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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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |