US3587991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reels and reel-and-ribbon assemblies
Assignee: Individual
•
Filing: 1967-12-11
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Granted: 1971-06-28
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Expires: 1987-12-11
Abstract
Abstract A REEL FOR A RIBBON OF FLEXIBLE SOUND-RECORDING MAGNETIC TAPE, FILM, PUNCHED TAPE, OR THE LIKE. THE REEL HAS A PAIR OF SPACED, PARALLEL REEL FLANGES AND CORE MEANS EXTENDS BETWEEN AND IS OPERATIVELY CONNECTED WITH THE FLANGES TO HOLD THE LATTER APART FROM EACH OTHER BY A DISTANCE CORRESPONDING TO THE WIDTH OF THE RIBBON WHICH IS TO BE STORED BETWEEN THE FLANGES. THIS CORE MEANS SUPPORTS AT LEAST ONE OF THE FLANGES FOR FREE ROTARY MOVEMENT ABOUT THE AXIS OF THE CORE MEANS WITH RESPECT TO THE OTHER OF THE FLANGES, AND ONE OF THE FLANGES CARRIES A MEANS FOR FACILITATING THE WINDING OF A RIBBON INTO THE SPACE BETWEEN THE FLANGES.
Inventors
- 👤 Robert J Stark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:04
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/323; G03B21/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |