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US4793479A Expired / Lapsed US ⏱️ 0.0 years remaining

Holder tray of a compact disc

Assignee: Shin-Etsu Polymer Co Ltd
•
Filing: 1988-03-30
•
Granted: 1988-12-27
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Expires: 2008-03-30
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Abstract

Abstract The holder tray for compact disc of the invention has a disc-engagement structure capable of holding a disc mounted thereon very reliably still with little resistance against demounting of the disc therefrom. The disc-engagement structure has a center pushing part raised above the center opening and connected with a plurality of radially arranged connecting pieces each in a cranked confuguration connecting the central pushing part and the periphery of the center opening, the riser parts collectively forming a cylindrical surface to contact with the inner periphery of the center hole of a compact disc mounted thereon. Further, a plurality of radially arranged flap pieces extend from the center pushing part each in a cantilever-like manner and each between two connecting pieces and, when the pushing part is pushed down, the free ends of the flap pieces are raised so as to push up the disc facilitating demounting thereof.

Inventors

  • 👤 Chusaburo Otsuka
  • 👤 Toshitsugu Yajima

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 17:50
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/02; G11B33/04; G11B33/0405; G11B33/0411; G11B33/0422; G11B33/0427

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 153 words
A holder tray of a compact disc which is a generally flat, integrally shaped body made of a rigid plastic resin provided with (a) a circular center opening, (b) a pushing part raised above the surface of the body of the tray to form a space for pushing stroke below the lower surface thereof and coaxially positioned with the circular center opening, (c) a plurality of radially arranged connecting pieces each in a cranked form composed of a lower flat part connected to the periphery of the center opening, upper flat part connected to the peripehry of the pushing part and a riser part connecting the lower and upper flat parts, the riser parts of the plurality of the radially arranged connecting pieces collectively forming an approximately cylindrical surface, and (d) a plurality of radially arranged flap pieces each cantilevered at the periphery of the pushing part and positioned between two connecting pieces.
Claim 2
Dependent Claim 153 words
A holder tray of a compact disc which is a generally flat, integrally shaped body made of a rigid plastic resin provided with (a) a circular center opening, (b) a pushing part raised above the surface of the body of the tray to form a space for pushing stroke below the lower surface thereof and coaxially positioned with the circular center opening, (c) a plurality of radially arranged connecting pieces each in a cranked form composed of a lower flat part connected to the periphery of the center opening, upper flat part connected to the peripehry of the pushing part and a riser part connecting the lower and upper flat parts, the riser parts of the plurality of the radially arranged connecting pieces collectively forming an approximately cylindrical surface, and (d) a plurality of radially arranged flap pieces each cantilevered at the periphery of the pushing part and positioned between two connecting pieces.
Claim 3
Dependent Claim 86 words
The holder tray of a compact disc as claimed in claim 1 wherein each of the flap pieces is in a cranked form composed of a lower flat part forming a free end, upper flat part connected to the periphery of the pushing part and a riser part connecting the lower and upper flat parts, the riser parts of the plurality of the flap pieces collectively form-ing substantially the same cyclindrical surface as the cylindrical surface formed collectively by the riser parts of the connecting pieces.

References Cited (Backward Citations)

US4084690A Cited
US4520470A Cited
US4499994A Cited
DE3425579A1 Cited
US4702369A Cited
US4746013A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-12-27 1992-06-27 1992-12-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-12-27 1996-06-27 1996-12-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-12-27 2000-06-27 2000-12-27 $7700.00 Window Closed / Lapsed

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