Patent US4539668A successfully refreshed from Google Patents.
US4539668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for loading and ejecting a disc in a disc player
Assignee: Toshiba Corp
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Filing: 1982-09-17
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Granted: 1985-09-03
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Expires: 2002-09-17
Abstract
Abstract A disc carriage for use in a disc player is provided with a pair of surfaces coming into contact with a disc when the disc is inserted or ejected from the disc player. The pair of surfaces are other than parallel and are symmetrically disposed about a center plane oriented in the direction of loading and ejecting the disc so that only peripheral edge portions of the disc contact the pair of surfaces. A second pair of surfaces disposed opposite to the first pair of surfaces can also be arranged in a non-parallel position, symmetrically disposed about the center plane, to cooperate with the first pair of surfaces so that only peripheral edge portions of the disc contact either pair of surfaces.
Inventors
- 👤 Yutaka Izumi
- 👤 Hiroshi Kawakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:00
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/05; G11B17/053; G11B17/054; G11B19/00; G11B19/02; G11B19/16; G11B19/165
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
A device integral with a disc player for loading and ejecting a disc in the disc player comprising: chassis means; and means for carrying said disc, said carrying means being attached to said chassis means and including a first wall having a first pair of surfaces for receiving said disc which are other than parallel and are disposed about a center plane, said center plane being, aligned orthogonally to the plane of said disc during loading and parallel to the direction of loading, so that only peripheral edge portions of said disc contact said first pair of surfaces.
Claim 2
Independent Claim
98 words
A device integral with a disc player for loading and ejecting a disc in the disc player comprising: chassis means; and means for carrying said disc, said carrying means being attached to said chassis means and including a first wall having a first pair of surfaces for receiving said disc which are other than parallel and are disposed about a center plane, said center plane being, aligned orthogonally to the plane of said disc during loading and parallel to the direction of loading, so that only peripheral edge portions of said disc contact said first pair of surfaces.
Claim 3
Dependent Claim
74 words
The device of claim 1 in which said carrying means further includes a second wall having a second pair of surfaces disposed opposite to the first pair of surfaces which are other than parallel and are disposed about the center plane aligned orthogonally to the plane of said disc during loading and cooperate with said first pair of surfaces so that only peripheral edge portions of said disc contact said second pair of surfaces.
Claim 4
Independent Claim
29 words
The device of claims 1 or 2 in which said means for carrying said disc is attached to said chassis to be movable between a loading and ejecting position.
Claim 5
Independent Claim
43 words
The device of claims 1 or 2 wherein said disc player has a turntable and said device for loading and ejecting a disc further includes means pivotally attached to said carrying means for clamping the disc against said turntable in the loading position.
Claim 6
Dependent Claim
23 words
The device of claim 1 in which the first pair of surfaces of said first wall are symmetrically disposed about the center plane.
Claim 7
Dependent Claim
19 words
The device of claim 2 in which the second pair of surfaces are symmetrically disposed about the center plane.
Claim 8
Independent Claim
68 words
A device for loading and ejecting a disc in a disc player comprising: chassis means; and means for carrying said disc attached to said chassis, wherein said means has an elongated aperture for receiving the disc, said aperture being widest substantially at a mid point of its long dimension and having opposed tapered sides spaced apart and approaching the thickness of said disc at their respective extreme ends.
Claim 9
Independent Claim
68 words
A device for loading and ejecting a disc in a disc player comprising: chassis means; and means for carrying said disc attached to said chassis, wherein said means has an elongated aperture for receiving the disc, said aperture being widest substantially at a mid point of its long dimension and having opposed tapered sides spaced apart and approaching the thickness of said disc at their respective extreme ends.
Claim 10
Independent Claim
74 words
A device for loading and ejecting a disc in a disc player comprising: chassis means; and means for carrying said disc attached to said chassis, said means including a first and a second wall opposed to one another wherein said second wall is inclined with respect to said first wall so that the respective internal surfaces of said first and second walls are tapered toward one another in the direction of loading said disc.
Claim 11
Independent Claim
74 words
A device for loading and ejecting a disc in a disc player comprising: chassis means; and means for carrying said disc attached to said chassis, said means including a first and a second wall opposed to one another wherein said second wall is inclined with respect to said first wall so that the respective internal surfaces of said first and second walls are tapered toward one another in the direction of loading said disc.
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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) | 1988-09-02 | 1989-03-04 | 1989-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-02 | 1993-03-04 | 1993-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-02 | 1997-03-04 | 1997-09-03 | $7700.00 | Window Closed / Lapsed |