US3091409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape storage device
Assignee: Ampex Corp
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Filing: 1960-12-29
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Granted: 1963-05-28
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Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 Goodale Kenneth Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:39
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/56; G11B15/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A STORAGE DEVICE FOR A TAPE LOOP, COMPRISING: A PNEUMATIC VESSEL DEFINING AN ELONGATED TAPE-STORAGE CHANNEL WITH AT LEAST ONE BEND; MEANS FOR FEEDING SAID TAPE LOOP INTO A FIRST END OF SAID CHANNEL WITH SAID LOOP LYING GENERALLY IN THE PLANE OF SAID BEND AND WITH THE TWO SHANKS OF SAID LOOP SUBSTANTIALLY SEPARATED AT SAID FIRST END OF SAID CHANNEL; MEANS FOR ESTABLISHING AN AIR PRESSURE DIFFERENTIAL WITH A GRADIENT DECREASING FROM SAID FIRST TO THE SECOND END OF SAID CHANNEL FOR DRAWING SAID LOOP TAUTLY TOWARD SAID SECOND END OF SAID CHANNEL AND AROUND SAID BEND; AND MEANS FOR ESTABLISHING AN AIR PRESSURE DIFFERENTIAL WITH A GRADIENT DECREASING TOWARD A POINT INTERMEDIATE THE INNER AND OUTER PERIPHERIES OF SAID BEND FOR SEPARATING THE TWO SHANKS OF SAID TAPE LOOP AT SAID BEND.
Claim 2
Dependent Claim
135 words
A STORAGE DEVICE FOR A TAPE LOOP, COMPRISING: A PNEUMATIC VESSEL DEFINING AN ELONGATED TAPE-STORAGE CHANNEL WITH AT LEAST ONE BEND; MEANS FOR FEEDING SAID TAPE LOOP INTO A FIRST END OF SAID CHANNEL WITH SAID LOOP LYING GENERALLY IN THE PLANE OF SAID BEND AND WITH THE TWO SHANKS OF SAID LOOP SUBSTANTIALLY SEPARATED AT SAID FIRST END OF SAID CHANNEL; MEANS FOR ESTABLISHING AN AIR PRESSURE DIFFERENTIAL WITH A GRADIENT DECREASING FROM SAID FIRST TO THE SECOND END OF SAID CHANNEL FOR DRAWING SAID LOOP TAUTLY TOWARD SAID SECOND END OF SAID CHANNEL AND AROUND SAID BEND; AND MEANS FOR ESTABLISHING AN AIR PRESSURE DIFFERENTIAL WITH A GRADIENT DECREASING TOWARD A POINT INTERMEDIATE THE INNER AND OUTER PERIPHERIES OF SAID BEND FOR SEPARATING THE TWO SHANKS OF SAID TAPE LOOP AT SAID BEND.
References Cited (Backward Citations)
US2980355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |