Patent US4252327A successfully refreshed from Google Patents.
US4252327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video disc player
Assignee: Discovision Associates
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Filing: 1979-02-16
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Granted: 1981-02-24
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Expires: 1999-02-16
Abstract
Abstract A video disc player assembly is described employing a fixed base member with a pair of fixed rails, and a movable carriage member employing a pair of linear bearing assemblies in engagement with said rails. A stabilization plate is mounted on the movable carriage for movement therewith. A motor and spindle assembly is mounted on the stabilization plate. A portion of the motor and spindle assembly extends through axially aligned apertures in the stabilization plate and carriage and carries a videodisc mounting surface coplanar with the stabilization plate. A centering means is provided to accurately center the disc about the spindle. A releasable clamp rigidly engages the spindle and holds the videodisc against the mounting surface parallel to the stabilization plate. A motor and spindle are mounted on the carriage for rotary driving of the video disc, a centering means is provided to accurately center the disc about the spindle, and a stabilization plate is provided adjacent and parallel to the rotating disc.
Inventors
- 👤 James E. Elliott
- 👤 Lawrence S. Canino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:12
CPC Classifications
G; G11; G11B; G11B3/00; G11B3/02; G11B3/10; G11B3/34; G11B3/36; G11B17/00; G11B17/02; G11B17/022; G11B17/028; G11B17/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
321 words
A videodisc player for retrieving information stored upon a rigid videodisc record, said player comprising: a housing including fixed support means having at least one linear rail member; a movable carriage having at least one linear bearing means in operative engagement with said rail member, said carriage being formed with an aperture; a stabilization plate mounted on said carriage and movable therewith, said plate being formed with an aperture; said aperture formed in said plate being in axial alignment with said aperture formed in said carriage; means for controlling movement of said carriage with respect to said housing along said rail; a motor and spindle assembly mounted on said stabilization plate for movement therewith; at least a portion of said assembly extending through said aperture in said stabilization plate; said spindle having a central axis and said assembly including means for mounting a videodisc about said spindle in a plane generally perpendicular to the axis of said spindle and parallel to said stabilization plate, said mounting means including a videodisc support ring having a generally flat surface disposed in a plane generally perpendicular to said spindle axis and arranged to abut one side of said disc, said plane flat surface of said support ring being disposed above and parallel to a surface of said stabilization plate; said support ring being positioned within said aperture in said stabilization plate and spaced from said stabilization plate for forming an air channel; means for centering said disc about said spindle, said centering means being disposed about said spindle and having an outer surface generally forming a frustum of a cone, which surface is arranged to engage a central aperture in said videodisc thereby centering said disc with respect to said spindle axis; and releasable clamping means arranged to rigidly engage said spindle and resiliently engage a second side of said disc for holding the disc against said support ring and parallel to said plate.
Claim 2
Dependent Claim
321 words
A videodisc player for retrieving information stored upon a rigid videodisc record, said player comprising: a housing including fixed support means having at least one linear rail member; a movable carriage having at least one linear bearing means in operative engagement with said rail member, said carriage being formed with an aperture; a stabilization plate mounted on said carriage and movable therewith, said plate being formed with an aperture; said aperture formed in said plate being in axial alignment with said aperture formed in said carriage; means for controlling movement of said carriage with respect to said housing along said rail; a motor and spindle assembly mounted on said stabilization plate for movement therewith; at least a portion of said assembly extending through said aperture in said stabilization plate; said spindle having a central axis and said assembly including means for mounting a videodisc about said spindle in a plane generally perpendicular to the axis of said spindle and parallel to said stabilization plate, said mounting means including a videodisc support ring having a generally flat surface disposed in a plane generally perpendicular to said spindle axis and arranged to abut one side of said disc, said plane flat surface of said support ring being disposed above and parallel to a surface of said stabilization plate; said support ring being positioned within said aperture in said stabilization plate and spaced from said stabilization plate for forming an air channel; means for centering said disc about said spindle, said centering means being disposed about said spindle and having an outer surface generally forming a frustum of a cone, which surface is arranged to engage a central aperture in said videodisc thereby centering said disc with respect to said spindle axis; and releasable clamping means arranged to rigidly engage said spindle and resiliently engage a second side of said disc for holding the disc against said support ring and parallel to said plate.
Claim 3
Dependent Claim
27 words
A videodisc player as recited in claim 1, and further including: means for adjusting and maintaining said stabilization plate perpendicular to said central axis of said spindle.
Claim 4
Dependent Claim
32 words
A videodisc player as recited in claim 1, wherein said stabilization plate further comprises: means depending from said plate for forming an air reservoir in combination with said motor and spindle assembly.
Claim 5
Dependent Claim
16 words
A videodisc player as recited in claim 3, wherein: said depending means includes air intake means.
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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) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |