US3149797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-threading magnetic tape recording and reproducing apparatus
Assignee: 3M Co
•
Filing: 1961-05-08
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Granted: 1964-09-22
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Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 Pastor Sheldon Lee
- 👤 Carl W Claras
- 👤 Robert L Moore
- 👤 Rudolph A Rom
- 👤 Zarr Myron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:59
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/68; G11B15/6885; G11B15/6895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN COMBINATION, A TAKE-UP REEL HAVING A HUB PORTION AND A PAIR OF PARALLEL SIDE FLANGES, AT LEAST ONE OF SAID FLANGES BEING AXIALLY MOVABLE, MEANS DEFINING A MINIMUM SPACING BETWEEN SAID FLANGES, MEANS BIASING SAID AT LEAST ONE FLANGE AXIALLY TOWARD A NORMAL POSITION AFFORDING SAID MINIMUM SPACING BETWEEN SAID FLANGES, MEANS FOR ROTATING SAID REEL, AN ELONGATED EXTENT OF RELATIVELY STIFF FLEXIBLE BAND MATERIAL HAVING A WIDTH GREATER THAN SAID NORMAL FLANGE SPACING, AND MEANS FOR INTRODUCING ONE END OF SAID EXTENT BETWEEN SAID REEL FLANGES WITH THE OPPOSITE EDGES OF SAID EXTENT ENGAGING SAIDE SIDE FLANGES RESPECTIVELY TO CAUSE AXIAL MOVEMENT OF SAID AT LEAST ONE FLANGE AGAINST SAID BIASING MEANS AND FRICTIONAL ENGAGEMENT OF SAID OPPOSITE EDGES OF SAID EXTENT BY SAID FLANGES,
Claim 2
Dependent Claim
127 words
IN COMBINATION, A TAKE-UP REEL HAVING A HUB PORTION AND A PAIR OF PARALLEL SIDE FLANGES, AT LEAST ONE OF SAID FLANGES BEING AXIALLY MOVABLE, MEANS DEFINING A MINIMUM SPACING BETWEEN SAID FLANGES, MEANS BIASING SAID AT LEAST ONE FLANGE AXIALLY TOWARD A NORMAL POSITION AFFORDING SAID MINIMUM SPACING BETWEEN SAID FLANGES, MEANS FOR ROTATING SAID REEL, AN ELONGATED EXTENT OF RELATIVELY STIFF FLEXIBLE BAND MATERIAL HAVING A WIDTH GREATER THAN SAID NORMAL FLANGE SPACING, AND MEANS FOR INTRODUCING ONE END OF SAID EXTENT BETWEEN SAID REEL FLANGES WITH THE OPPOSITE EDGES OF SAID EXTENT ENGAGING SAIDE SIDE FLANGES RESPECTIVELY TO CAUSE AXIAL MOVEMENT OF SAID AT LEAST ONE FLANGE AGAINST SAID BIASING MEANS AND FRICTIONAL ENGAGEMENT OF SAID OPPOSITE EDGES OF SAID EXTENT BY SAID FLANGES,
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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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |