Patent US3284013A successfully refreshed from Google Patents.
US3284013A
Expired / Lapsed
US
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Inverted v vacuum loop box
Assignee: Unisys Corp
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Filing: 1964-06-16
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Granted: 1966-11-08
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Expires: 1984-06-16
Abstract
No abstract record available.
Inventors
- 👤 Naiman Mark
- 👤 Julea S Chapline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:32
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G11B15/58
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
IN A TAPE TRANSPORT; CAPSTAN MEANS FOR MOVING TAPE AT A PREDETERMINED RATE, STORAGE REEL MEANS FEEDING TAPE TO SAID CAPSTAN MEANS AT SAID PREDETERMINED RATE, A VACUUM LOOP BOX STORING A LOOP OF SAID TAPE BETWEEN SAID CAPSTAN MEANS AND SAID STORAGE REEL MEANS, SAID VACUUM LOOP BOX COMPRISING FOUR WALLS FORMING AN ELONGATED, ENCLOSED SPACE HAVING AN OPENING AT ONE END AND A FIFTH WALL ENCLOSING SAID SPACE AT THE OTHER END, TWO OF SAID FOUR WALLS INCLUDING A PAIR OF OPPOSITELY DISPOSED SURFACES SLOPING INWARDLY FROM BOTTOM TO TOP CAUSING THE CROSS SECTIONAL AREA OF SAID SPACE TO DECREASE FROM BOTTOM TO TOP, THE OTHER TWO OF SAID FOUR WALLS FURTHER INCLUDING A PAIR OF OPPOSITE DISPOSED PARALLEL SURFACES TO WHICH THE FLAT PORTIONS OF THE STORED TAPE ARE SUBSTANTIALLY PARALLEL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |