US3235194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape transport system
Assignee: Ampex Corp
•
Filing: 1963-03-08
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Granted: 1966-02-15
•
Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Jack K Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:41
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A MAGNETIC TAPE DRIVE SYSTEM FOR MAINTAINING CONSTANT TENSION ON A MAGNETIC TAPE WHILE DRIVING THE TAPE AT CONSTANT SPEED, COMPRISING: TAPE SUPPLY AND TAKE-UP REELS ADAPTED TO HAVE BODIES OF TAPE WOUND THEREON; A PAIR OF ROTATABLE DRIVE MEANS, EACH SEPARATELY ENGAGING THE OUTER PERIPHERY OF A TAPE BODY ON THE RESPECTIVE SUPPLY AND TAKE-UP REELS; ROTATABLE POWER MEANS; DIFFERENTIAL MEANS COUPLING THE ROTATABLE POWER MEANS TO EACH OF THE DRIVE MEANS; AND MEANS COUPLED TO ONE OF THE ROTATABLE DRIVE MEANS FOR EXERTING A COUNTER TORQUE THEREON.
Claim 2
Dependent Claim
89 words
A MAGNETIC TAPE DRIVE SYSTEM FOR MAINTAINING CONSTANT TENSION ON A MAGNETIC TAPE WHILE DRIVING THE TAPE AT CONSTANT SPEED, COMPRISING: TAPE SUPPLY AND TAKE-UP REELS ADAPTED TO HAVE BODIES OF TAPE WOUND THEREON; A PAIR OF ROTATABLE DRIVE MEANS, EACH SEPARATELY ENGAGING THE OUTER PERIPHERY OF A TAPE BODY ON THE RESPECTIVE SUPPLY AND TAKE-UP REELS; ROTATABLE POWER MEANS; DIFFERENTIAL MEANS COUPLING THE ROTATABLE POWER MEANS TO EACH OF THE DRIVE MEANS; AND MEANS COUPLED TO ONE OF THE ROTATABLE DRIVE MEANS FOR EXERTING A COUNTER TORQUE THEREON.
References Cited (Backward Citations)
GB424924A
Cited
US2012208A
Cited
US2457699A
Cited
US2632060A
Cited
US2542917A
Cited
US3119537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |