Patent US4486873A successfully refreshed from Google Patents.
US4486873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc loading mechanism
Assignee: Pioneer Corp
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Filing: 1982-06-17
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Granted: 1984-12-04
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Expires: 2002-06-17
Abstract
Abstract A disc loading mechanism includes a rotatably and linearly movable tray onto which the disc is inserted and positioned, and a cam mechanism driven to lower the disc onto a turntable and separate the tray from the disc.
Inventors
- 👤 Hideyuki Takahashi
- 👤 Isami Kenmotsu
- 👤 Takahiro Okajima
- 👤 Yoshio Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:36
CPC Classifications
G; G11; G11B; G11B17/00; G11B17/02; G11B17/04; G11B17/05; G11B17/051; G11B17/022; G11B17/028; G11B17/035
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
165 words
A disc loading mechanism, comprising: disc rotating means for rotating said disc when engaged therewith at a disc reproduction position; a flat tray for receiving an inserted disc thereupon at a disc insertion position and for transporting said disc horizontally to a disc reproduction position whereat said tray separates vertically from said disc, said tray including guide means on the outer periphery of the flat area of said tray for engaging and centering said disc on said flat area, said tray being supported to be movable between said disc insertion position and said disc reproduction position; a driving cam having a varying vertical thickness; cam contacting means for supporting the tray on the upper side of said driving cam said driving cam; and driving means for moving horizontally said driving cam thereby moving said tray as said contacting means follows the vertical thickness of said cam, said disc inserted onto said tray being vertically engaged with said disc rotator means by moving said driving cam.
Claim 2
Dependent Claim
165 words
A disc loading mechanism, comprising: disc rotating means for rotating said disc when engaged therewith at a disc reproduction position; a flat tray for receiving an inserted disc thereupon at a disc insertion position and for transporting said disc horizontally to a disc reproduction position whereat said tray separates vertically from said disc, said tray including guide means on the outer periphery of the flat area of said tray for engaging and centering said disc on said flat area, said tray being supported to be movable between said disc insertion position and said disc reproduction position; a driving cam having a varying vertical thickness; cam contacting means for supporting the tray on the upper side of said driving cam said driving cam; and driving means for moving horizontally said driving cam thereby moving said tray as said contacting means follows the vertical thickness of said cam, said disc inserted onto said tray being vertically engaged with said disc rotator means by moving said driving cam.
Claim 3
Dependent Claim
51 words
A disc loading mechanism as claimed in claim 1, wherein said tray is arranged so as to be rotatable about a rotary shaft between the disc insertion position and the disc reproduction position, and movable in the direction along the length of said rotary shaft at said the disc reproduction position.
Claim 4
Dependent Claim
37 words
A disc loading mechanism as claimed in claim 1, wherein said tray is mounted for rotation about a single axis displaced from the axis of said disc rotator means and for linear movement parallel to said axis.
Claim 5
Dependent Claim
44 words
A disc loading mechanism as claimed in claim 1, said driving cam including a sloped portion which, when engaged with said supporting means, lowers said disc and tray such that said disc engages said disc rotator means and said tray separates from said disc.
Claim 6
Dependent Claim
56 words
A disc loading mechanism as claimed in claim 4, said driving cam including a plate portion having guide means therein, said tray including means engaging said guide means and being guided therein to rotate said tray about a rotary shaft displaced from the axis of said disc rotator means when said driving means moves said cam.
Claim 7
Dependent Claim
26 words
A disc loading mechanism as claimed in claim 4, said tray including brake means for halting rotation of said disc when said disc abuts said tray.
Claim 8
Dependent Claim
28 words
A disc loading mechanism as claimed in claim 1, including means for reversing said driving means to return said disc and said tray to said disc insertion position.
Claim 9
Dependent Claim
23 words
A disc loading mechanism as claimed in claim 7, said reversing means including at least ejection selector means and disc orientation detection means.
Claim 10
Dependent Claim
26 words
A disc loading mechanism as claimed in claim 1, said guide means being disengaged from said disc when said disc is engaged with said rotator means.
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) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |