Patent US3104842A successfully refreshed from Google Patents.
US3104842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reel support for magnetic recording tapes
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
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Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/662; Y; Y10; Y10S; Y10S242/00; Y10S242/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A MAGNETIC TAPE RECORDING APPARATUS COMPRISING A NON ROTATABLE VERTICAL SHAFT WITH A TAPERED COUPLING PART, A TAPE REEL WITH A CENTRAL TAPERED HOLE, A SUPPORTING DISC AND A FRICTION LAYER, SAID SUPPORTING DISC BEING FREELY ROTATABLE ON SAID SHAFT AND BEARING SAID FRICTION LAYER ON THE UPPER SIDE, SAID COUPLING PART OF SAID SHAFT BEING DESIGNED AS A BALL SEGMENTAL COLLAR DECREASING IN DIAMETER TOWARD THE UPPER END OF SAID SHAFT, SAID HOLE OF SAID TAPE REEL BEING EQUALLY BALL SEGMENTAL SHAPED AND FITTED TO SAID COLLAR SURFACE AND SAID SUPPORTING DISC TOGETHER WITH SAID FRICTION LAYER BEING ENGAGEABLE WITH SAID TAPE REEL.
Claim 2
Dependent Claim
105 words
IN A MAGNETIC TAPE RECORDING APPARATUS COMPRISING A NON ROTATABLE VERTICAL SHAFT WITH A TAPERED COUPLING PART, A TAPE REEL WITH A CENTRAL TAPERED HOLE, A SUPPORTING DISC AND A FRICTION LAYER, SAID SUPPORTING DISC BEING FREELY ROTATABLE ON SAID SHAFT AND BEARING SAID FRICTION LAYER ON THE UPPER SIDE, SAID COUPLING PART OF SAID SHAFT BEING DESIGNED AS A BALL SEGMENTAL COLLAR DECREASING IN DIAMETER TOWARD THE UPPER END OF SAID SHAFT, SAID HOLE OF SAID TAPE REEL BEING EQUALLY BALL SEGMENTAL SHAPED AND FITTED TO SAID COLLAR SURFACE AND SAID SUPPORTING DISC TOGETHER WITH SAID FRICTION LAYER BEING ENGAGEABLE WITH SAID TAPE REEL.
References Cited (Backward Citations)
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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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |