US4467377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette type-tape recorder
Assignee: Pioneer Corp
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Filing: 1981-12-29
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Granted: 1984-08-21
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Expires: 2001-12-29
Abstract
Abstract A cassette machine is provided with a central roller for contacting the tape and a pair of magnetic heads on either side of the additional roller and employed in accordance with the direction of tape travel, so that the head-tape contact point is always isolated form the supply reel by the additional roller.
Inventors
- 👤 Masahiro Komatsubara
- 👤 Tetsuro Kamimura
- 👤 Takugi Inanaga
- 👤 Akira Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:32
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B5/00; G11B5/48; G11B5/488; G11B5/4893
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
In a cassette tape machine including at least one pinch roller for engaging a tape in a cassette, having a supply reel, a take-up reel and associated guide rollers, so as to advance said tape from said supply reel to said takeup reel, said machine further comprising a magnetic head for contacting said tape, the improvement comprising an additional roller insertable from said tape machine into said cassette for contacting said tape at a point between said magnetic head and one of said associated guide rollers.
Claim 2
Dependent Claim
86 words
In a cassette tape machine including at least one pinch roller for engaging a tape in a cassette, having a supply reel, a take-up reel and associated guide rollers, so as to advance said tape from said supply reel to said takeup reel, said machine further comprising a magnetic head for contacting said tape, the improvement comprising an additional roller insertable from said tape machine into said cassette for contacting said tape at a point between said magnetic head and one of said associated guide rollers.
Claim 3
Dependent Claim
24 words
A cassette tape machine as claimed in claim 1, wherein said additional roller contacts said tape at substantially a central portion of said cassette.
Claim 4
Dependent Claim
132 words
A cassette tape machine as claimed in claim 2, said machine being able to transport said tape in a first direction and in a second direction which is opposite to said first direction and wherein said machine includes two pinch rollers one of which contacts said tape when said tape is transported in said first direction and the other of which contacts said tape when said tape is transported in said second direction, and two magnetic heads one between said additional roller and each of said pinch rollers, said additional roller contacting said tape when said tape is transported in either said first or second directions, and wherein the magnetic head between said additional roller and said one pinch roller contacting said tape is insertable into said cassette to contact said tape.
Claim 5
Dependent Claim
28 words
A cassette tape machine as claimed in claim 2 or 3, wherein said additional roller contacts said tape through a conventional magnetic head insertion hole in said cassette.
Claim 6
Dependent Claim
38 words
A cassette tape machine as claimed in claims 2 or 3, further comprising a rotatable shaft on which said additional roller is mounted at one end, and a flywheel coupled to the other end of said rotatable shaft.
References Cited (Backward Citations)
US4062506A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |