US3208688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape reel
Assignee: 3M Co
•
Filing: 1963-03-11
•
Granted: 1965-09-28
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hanes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:04
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/67; G11B15/674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A TAPE REEL THAT UPON ROTATION IN A MAGNETIC TAPE RECORDER SELF-THREADS MAGNETIC RECORDING TAPE THAT IS FROM 0.5 TO 1.5 MILS IN THICKNESS AND HAS A PREDETERMINED WIDTH, SAID REEL COMPRISING A HUB HAVING A CYLINDRICAL TAPE-RECEIVING RIM AND FIRST AND A SECOND CIRCULAR SIDE FLANGES, THE INNER SURFACES OF WHICH ARE SPACED AT THE HUB RIM BY A DISTANCE AT LEAST AS GREAT AS SAID TAPE WIDTH AND AT ALL OTHER POINTS BY A DISTANCE GREATER THAN THE TAPE WIDTH, SAID HUB RIM BEING FORMED WITH AT LEAST ONE SLOT ADJACENT SAID FIRST FLANGE; AND A SPRING MEANS EXTENDING FROM WITHIN A SAID SLOT OUTWARDLY ALONG THE INNER SURFACE OF SAID FIRST FLANGE, SAID SPRING MEANS
Claim 2
Dependent Claim
118 words
A TAPE REEL THAT UPON ROTATION IN A MAGNETIC TAPE RECORDER SELF-THREADS MAGNETIC RECORDING TAPE THAT IS FROM 0.5 TO 1.5 MILS IN THICKNESS AND HAS A PREDETERMINED WIDTH, SAID REEL COMPRISING A HUB HAVING A CYLINDRICAL TAPE-RECEIVING RIM AND FIRST AND A SECOND CIRCULAR SIDE FLANGES, THE INNER SURFACES OF WHICH ARE SPACED AT THE HUB RIM BY A DISTANCE AT LEAST AS GREAT AS SAID TAPE WIDTH AND AT ALL OTHER POINTS BY A DISTANCE GREATER THAN THE TAPE WIDTH, SAID HUB RIM BEING FORMED WITH AT LEAST ONE SLOT ADJACENT SAID FIRST FLANGE; AND A SPRING MEANS EXTENDING FROM WITHIN A SAID SLOT OUTWARDLY ALONG THE INNER SURFACE OF SAID FIRST FLANGE, SAID SPRING MEANS
References Cited (Backward Citations)
US1861891A
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US1888725A
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US1861882A
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US2004608A
Cited
GB746720A
Cited
US3030045A
Cited
FR1238912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |