US4413793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette tape machine
Assignee: Pioneer Corp
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Filing: 1981-12-28
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Granted: 1983-11-08
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Expires: 2001-12-28
Abstract
Abstract The engagement between shaft hub and cassette reel is made resilient to dampen tape resonance. The hub projections can be either of a viscous elastic material, or a radially yieldable spring member.
Inventors
- 👤 Masahiro Komatsubara
- 👤 Tetsuro Kamimura
- 👤 Takugi Inanaga
- 👤 Akira Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:18
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/32; G11B15/46; G11B15/50; Y; Y10; Y10S; Y10S242/00; Y10S242/907
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
In a cassette tape machine having a rotatable reel shaft unit with at least one engagement projection on its outer periphery having a contact surface for engaging a reel in a cassette tape whereby said reel rotates said shaft unit in a supply direction, the improvement characterized in that said shaft unit includes a hub of a viscous elastic material having a plurality of viscous elastic engagement projections, and a plastic member covering said hub and having a slit therein for exposing said engagement projection to said reel.
Claim 2
Dependent Claim
88 words
In a cassette tape machine having a rotatable reel shaft unit with at least one engagement projection on its outer periphery having a contact surface for engaging a reel in a cassette tape whereby said reel rotates said shaft unit in a supply direction, the improvement characterized in that said shaft unit includes a hub of a viscous elastic material having a plurality of viscous elastic engagement projections, and a plastic member covering said hub and having a slit therein for exposing said engagement projection to said reel.
Claim 3
Dependent Claim
34 words
A cassette tape machine as claimed in claim 1, wherein said shaft unit further includes a shaft member about which said hub is mounted and with respect to which said hub is axially slidable.
References Cited (Backward Citations)
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Cited
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Cited
US2616633A
Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |