US4181272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cassette reel
Assignee: TDK Corp
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Filing: 1978-07-21
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Granted: 1980-01-01
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Expires: 1998-07-21
Abstract
Abstract A tape cassette reel comprises a special clamp which is fitted to a groove of a hub. The clamp comprises an upper rib, a pair of legs extended from the upper rib; a lower rib inserted between the legs and a projected part formed on the lower rib. The projected part is fitted to a cavity formed at the bottom of the groove of the hub. A tape is completely clamped on the hub by the clamp without failure.
Inventors
- 👤 Haruo Shiba
- 👤 Masatoshi Okamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:46
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/67; G11B15/674; G11B23/00; G11B23/02; G11B23/037
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A tape cassette reel assembly comprising: a hub having a groove portion including a cavity formed on the bottom of the groove portion; a clamp for fitting to said groove portion of said hub and for clamping a tape thereto, said clamp including a first rib member; a pair of legs extended from both ends of the first rib member; a second rib member which is fitted between the legs; and a projected part formed on the second rib member; said clamp being fitted to said groove portion of said hub so as to fit said projected part formed on the second rib member to said cavity formed on the bottom of the groove portion of the hub wherein said groove portion includes a first and second recess portion and said legs extending from the first rib member each have a hook portion which is fitted to said recesses in said groove portion of the hub.
Claim 2
Dependent Claim
156 words
A tape cassette reel assembly comprising: a hub having a groove portion including a cavity formed on the bottom of the groove portion; a clamp for fitting to said groove portion of said hub and for clamping a tape thereto, said clamp including a first rib member; a pair of legs extended from both ends of the first rib member; a second rib member which is fitted between the legs; and a projected part formed on the second rib member; said clamp being fitted to said groove portion of said hub so as to fit said projected part formed on the second rib member to said cavity formed on the bottom of the groove portion of the hub wherein said groove portion includes a first and second recess portion and said legs extending from the first rib member each have a hook portion which is fitted to said recesses in said groove portion of the hub.
Claim 3
Dependent Claim
25 words
A tape cassette reel assembly according to claim 1 wherein said second rib member is flexible so as to be easily inserted between the legs.
Claim 4
Dependent Claim
27 words
a tape cassette reel assembly according to claim 1 wherein the height of the second rib member is less than the height of the first rib member.
References Cited (Backward Citations)
US3661345A
Cited
US3990733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-31 | 1983-07-02 | 1984-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-31 | 1987-07-02 | 1988-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-31 | 1991-07-02 | 1992-01-01 | $7700.00 | Window Closed / Lapsed |