US4575836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual mode disc player
Assignee: Pioneer Corp
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Filing: 1984-02-03
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Granted: 1986-03-11
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Expires: 2004-02-03
Abstract
Abstract A disc player comprises a first driver for driving a first turntable for a first kind of an information-recorded disc, a second driver for driving a second turntable for a second kind of an information-recorded disc, a single holder for holding thereon the first and second drivers, holder drive means for driving the holder, and a pickup for reproducing signals from one of the first and second kinds of information-recorded discs at a predetermined play position, in which the single holder is moved so that one of the first and second kinds of information-recorded disc is selectively positioned at the predetermined play position.
Inventors
- 👤 Yasuhiko Seto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:31
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/05; G11B17/053; G11B17/056; G11B17/0565; G11B17/022; G11B17/028; G11B17/0282; G11B17/0283; G11B19/00; G11B19/20; G11B19/2009; G11B25/00; G11B25/04; G11B25/043
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A disc player comprising: first drive means for rotating a first turntable for a first kind of an information-recorded disc, second drive means for rotating a second turntable for a second kind of an information-recorded disc different from said first kind, a single holder means for holding thereon said first and second drive means, holder drive means for moving said single holder means along a predetermined path, a pair of movable members provided on said single holder means near endpoints of said predetermined path, means for biasing each of said movable members to move away from the center of said predetermined path toward its respective endpoint, means for positioning said single holder means so that one of said first and second kinds of information-recorded disc is selectively positioned at a predetermined play position, and pickup means for reproducing signals from said one of said first and second kinds of information-recorded disc when said one of said discs is at said predetermined play position.
Claim 2
Dependent Claim
163 words
A disc player comprising: first drive means for rotating a first turntable for a first kind of an information-recorded disc, second drive means for rotating a second turntable for a second kind of an information-recorded disc different from said first kind, a single holder means for holding thereon said first and second drive means, holder drive means for moving said single holder means along a predetermined path, a pair of movable members provided on said single holder means near endpoints of said predetermined path, means for biasing each of said movable members to move away from the center of said predetermined path toward its respective endpoint, means for positioning said single holder means so that one of said first and second kinds of information-recorded disc is selectively positioned at a predetermined play position, and pickup means for reproducing signals from said one of said first and second kinds of information-recorded disc when said one of said discs is at said predetermined play position.
Claim 3
Dependent Claim
16 words
The disc player of claim 1, said single holder means being swingable about a predetermined axis.
Claim 4
Dependent Claim
26 words
The disc player of claim 2, said first drive means having a spindle and a motor, said second drive means having a spindle and a motor.
Claim 5
Dependent Claim
26 words
The disc player of claim 3, said holder drive means including an arcuate rack, a pinion gear engaging said arcuate rack along the outer circumference thereof.
Claim 6
Dependent Claim
19 words
The disc player of claim 4, each of said movable members having a rack portion engaging said pinion gear.
Claim 7
Dependent Claim
20 words
The disc player of claim 3, a rotational axis of said pinion gear being located along a predetermined stationary line.
Claim 8
Dependent Claim
17 words
The disc player of claim 3, further comprising guide means for guiding each of said movable members.
Claim 9
Dependent Claim
25 words
The disc player of claim 3, said means for positioning said holder means including a plurality of stationary stop members abutting against said holder means.
Claim 10
Dependent Claim
27 words
The disc player of claim 5, including means for adjusting a position of each of said rack portions relative to said arcuate rack of said holder means.
Claim 11
Dependent Claim
16 words
The disc player of claim 9, further including means for detecting positions of said movable members.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |