US4504877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auto-reverse type cassette tape player
Assignee: Alps Alpine Co Ltd
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Filing: 1982-02-18
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Granted: 1985-03-12
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Expires: 2002-02-18
Abstract
Abstract An auto-reverse type cassette tape player having a head base rockably mounted on the front side of a bed and carrying a pair of magnetic heads, so that the magnetic heads are switched in a seesaw-like manner as the tape running direction is switched as a result of a switching between two pinch rollers which cooperate with corresponding capstan shafts.
Inventors
- 👤 Tatsuhiko Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:15
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/48; G11B5/54; G11B5/55; G11B5/5513; G11B5/5517; G11B15/00; G11B15/18; G11B15/1883; G11B15/44; G11B15/444
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
219 words
An auto-reverse type cassette tape player including: a bed carrying a pair of reel shafts and a pair of capstan shafts rotatable in opposite directions; a head base mounted on the front side of said bed by a support shaft in such a manner so as to be rockable around said support shaft; means for moving said head base into and out of a position along the path of movement of a tape; two magnetic heads carried by said head base at respective sides of said support shaft; a limiting projection mounted on said head base; slide means mounted on said bed and slidable in the direction generally parallel to the path of movement of a tape brought past either of said magnetic heads, the sliding direction of said slide means being switchable in accordance with a change in the tape feed direction; a driving member provided on said slide means and adapted to engage with said limiting projection to cause a rocking of said head base; said slide means having engaging slopes formed on respective sides of said support shaft; two pinch rollers carried on respective brackets rockably carried by said bed; and means carried by said brackets for engaging said slopes to bring said pinch rollers into selective engagement with a tape moving past respective magnetic heads.
Claim 2
Dependent Claim
219 words
An auto-reverse type cassette tape player including: a bed carrying a pair of reel shafts and a pair of capstan shafts rotatable in opposite directions; a head base mounted on the front side of said bed by a support shaft in such a manner so as to be rockable around said support shaft; means for moving said head base into and out of a position along the path of movement of a tape; two magnetic heads carried by said head base at respective sides of said support shaft; a limiting projection mounted on said head base; slide means mounted on said bed and slidable in the direction generally parallel to the path of movement of a tape brought past either of said magnetic heads, the sliding direction of said slide means being switchable in accordance with a change in the tape feed direction; a driving member provided on said slide means and adapted to engage with said limiting projection to cause a rocking of said head base; said slide means having engaging slopes formed on respective sides of said support shaft; two pinch rollers carried on respective brackets rockably carried by said bed; and means carried by said brackets for engaging said slopes to bring said pinch rollers into selective engagement with a tape moving past respective magnetic heads.
Claim 3
Dependent Claim
27 words
An auto-reverse type cassette tape player according to claim 1, wherein said means for moving said head base includes a slide base mounted on said bed movably.
Claim 4
Dependent Claim
24 words
An auto-reverse type cassette tape player according to claim 2, wherein said support shaft is received by a bushing provided on said head base.
Claim 5
Dependent Claim
36 words
An auto-reverse type cassette tape player according to claim 2, wherein said slide base is adapted to be moved between a playing position and non-playing position in accordance with an energization and de-energization of a solenoid.
Claim 6
Dependent Claim
25 words
An auto-reverse type cassette tape player according to claim 1, including means for moving said slide means by rotation of a drive gear rotated intermittently.
Claim 7
Dependent Claim
39 words
An auto-reverse type cassette tape player according to claim 5, wherein said means for moving said slide means includes a drive gear having two non-toothed portions and a semi-circular cam, said semi-circular cam being engaged by said slide means.
Claim 8
Dependent Claim
31 words
An auto-reverse type cassette tape player according to claim 5, wherein tooth portions of said drive gear are adapted to engage a pinion gear carried by one of said capstan shafts.
Claim 9
Dependent Claim
208 words
A tape player for automatically reversing the direction of movement of a tape and bringing either of two magnetic heads selectively into engagement with said tape, comprising a bed carrying a pair of reel shafts and associated capstan shafts, means including a motor for rotating each reel shaft and its associated capstan shaft in a direction opposite that of the other reel shaft and associated capstan shaft, a slide base moveable generally perpendicular to the path of movement of said tape and carrying a head base pivotally on a front surface thereof, two magnetic heads carried on respective side portions of said head base a slide plate mounted for lateral movement on the rear surface of said slide base, means for sliding said slide plate in a first direction upon movement of said tape in one direction and sliding said slide plate in a second direction upon movement of said tape in the reverse direction, and means interconnecting said slide plate and said head base for pivoting one of said heads into engagement with the tape upon movement of said slide plate in its first direction and pivoting the other of said heads into engagement with said tape upon movement of said slide plate in its second direction.
Claim 10
Dependent Claim
208 words
A tape player for automatically reversing the direction of movement of a tape and bringing either of two magnetic heads selectively into engagement with said tape, comprising a bed carrying a pair of reel shafts and associated capstan shafts, means including a motor for rotating each reel shaft and its associated capstan shaft in a direction opposite that of the other reel shaft and associated capstan shaft, a slide base moveable generally perpendicular to the path of movement of said tape and carrying a head base pivotally on a front surface thereof, two magnetic heads carried on respective side portions of said head base a slide plate mounted for lateral movement on the rear surface of said slide base, means for sliding said slide plate in a first direction upon movement of said tape in one direction and sliding said slide plate in a second direction upon movement of said tape in the reverse direction, and means interconnecting said slide plate and said head base for pivoting one of said heads into engagement with the tape upon movement of said slide plate in its first direction and pivoting the other of said heads into engagement with said tape upon movement of said slide plate in its second direction.
Claim 11
Dependent Claim
25 words
A tape player according to claim 8, said motor being rotated unidirectionally for rotating said reel shafts and associated capstan shafts in their respective directions.
Claim 12
Dependent Claim
17 words
A tape player according to claim 8, including means including a solenoid for moving said slide base.
Claim 13
Dependent Claim
68 words
A tape player according to claim 8, said means for sliding said slide plate including a cam adapted to engage said slide plate and carried by a drive gear so that rotation of said drive gear in a single direction can slide said slide plate in its first and then its second position, and means for rotating said drive gear intermittently by motive power supplied from said motor.
Claim 14
Dependent Claim
69 words
A tape player according to claim 11, said drive gear having two segments of gear teeth on its periphery separated by non-toothed positions, said drive-gear rotating means including a pinion rotated by said motor and adapted to idle in said non-toothed portions, and means for selectively bringing said segments of gear teeth into engagement with said pinion when the direction of movement of the tape is to be changed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |