US3949919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-aligning capstan bearing
Assignee: Alpine Electronics Inc
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Filing: 1974-10-18
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Granted: 1976-04-13
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Expires: 1994-10-18
Abstract
Abstract A cartridge tape player adapted to receive a cartridge having a capstan shaft for driving the tape in the cartridge and a tape player chassis including a pair of bilateral symmetrical retainers mounted to the tape player chassis. Each of the retainers includes parallel extensions which form spherical sockets having an inner spherical concave surface. A pair of ball bearings having outer convex surfaces are positioned around the capstan shaft to expose the capstan shaft to the tape in the cartridge and each of the ball bearings are positioned in the spherical sockets of the retainers thereby engaging the outer convex surface of the bearings with the inner spherical concave surface to provide a self-aligning bearing structure for mounting the capstan shaft within the tape player chassis.
Inventors
- 👤 Yoshiyuki Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/02; F16C23/04; F16C23/043; F16C23/045; G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A bearing mounting assembly for use in a cartridge-type tape player device having a tape player chassis, including in combination: a capstan shaft having spaced first and second capstan bearings for driving the tape in the cartridge said first and second capstan bearings each having an outer convex surface thereon, each of said first and second bearings receiving said capstan shaft for exposing said shaft to the tape in the cartridge, and bearing support means mounted to the chassis and having a pair of parallel extensions thereon, each of said extensions receiving and holding one of said first and said second capstan bearings to provide a self-aligning bearing structure for mounting said capstan shaft within the player chassis to hold said shaft in operative relationship with respect to the tape in the cartridge.
Claim 2
Dependent Claim
133 words
A bearing mounting assembly for use in a cartridge-type tape player device having a tape player chassis, including in combination: a capstan shaft having spaced first and second capstan bearings for driving the tape in the cartridge said first and second capstan bearings each having an outer convex surface thereon, each of said first and second bearings receiving said capstan shaft for exposing said shaft to the tape in the cartridge, and bearing support means mounted to the chassis and having a pair of parallel extensions thereon, each of said extensions receiving and holding one of said first and said second capstan bearings to provide a self-aligning bearing structure for mounting said capstan shaft within the player chassis to hold said shaft in operative relationship with respect to the tape in the cartridge.
Claim 3
Dependent Claim
71 words
The assembly according to claim 1 wherein said bearing support means is a pair of bilateral symmetrical elements mounted to the chassis, each of said elements having parallel extensions thereon which provide spherical sockets having inner spherical concave surfaces thereon, each of said first and second capstan bearings being supported and held by said spherical sockets to provide a self-aligning bearing structure for mounting said capstan shaft within the player chassis.
Claim 4
Dependent Claim
34 words
The assembly according to claim 2 wherein said bearing support means further includes means for preventing the tape in the cartridge from wrapping around said capstan shaft with the tape becoming bunched or slack.
Claim 5
Dependent Claim
49 words
The assembly according to claim 3 wherein said means for preventing the tape from wrapping around said capstan shaft includes a portion integral with said bilateral symmetrical elements and extending to said capstan shaft such that there is a small clearance between said capstan shaft and said symmetrical elements.
Claim 6
Dependent Claim
57 words
The assembly according to claim 2 wherein one of said pair of bilateral symmetrical elements includes a projection thereon and the other of said pair of bilateral symmetrical elements is adapted to receive said projection to thereby hold said symmetrical elements together to provide a selfaligning bearing structure for mounting said capstan shaft with the player chassis.
Claim 7
Dependent Claim
116 words
In a cartridge tape player adapted to receive a tape cartridge and having a capstan shaft for driving the tape in the cartridge and a tape player chassis, the combination including: a pair of ball bearings each having an outer convex surface thereon, said bearings receiving the capstan shaft to hold the same in operative relationship with respect to the tape in the cartridge; and bearing support means mounted to the tape player chassis receiving said pair of bearings and engaging said outer convex surfaces thereon to provide a self-aligning bearing structure for mounting the capstan shaft within the player chassis to hold the shaft in operative relationship with respect to the tape in the cartridge.
Claim 8
Dependent Claim
116 words
In a cartridge tape player adapted to receive a tape cartridge and having a capstan shaft for driving the tape in the cartridge and a tape player chassis, the combination including: a pair of ball bearings each having an outer convex surface thereon, said bearings receiving the capstan shaft to hold the same in operative relationship with respect to the tape in the cartridge; and bearing support means mounted to the tape player chassis receiving said pair of bearings and engaging said outer convex surfaces thereon to provide a self-aligning bearing structure for mounting the capstan shaft within the player chassis to hold the shaft in operative relationship with respect to the tape in the cartridge.
Claim 9
Dependent Claim
79 words
The tape player according to claim 6 wherein said bearing support means is a pair of bilateral symmetrical retainers mounted to the tape player chassis, each retainer having parallel extensions thereon, said extensions forming spherical sockets having inner spherical concave surfaces thereon, each of said spherical sockets adapted for receiving one of said bearings and for engaging said outer spherical surface of said bearings to provide a self-aligning bearing structure for mounting the capstan shaft within the player chassis.
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) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |