发明名称 OPTICAL STORAGE DISC PROTECTOR
摘要 <p>An optical storage disc protector (10) is disclosed which having a thin flexible circular wafer (15) having an upper surface (42) which further includes a flat annular surface (45) for bearing the weight of a CD and a downward sloping concave annular surface (40) for providing an airspace between the wafer and the data bearing surface of the CD. A centrally located hub (20) is attached to the upper surface of the wafer (15) which is sized to be just smaller than the center hole (65) of a typical CD to provide an interference fit with the center hole (65). A circumferential wall (30) is attached to the upper surface (42) of the wafer (15) and is configured to provide an interference fit with peripheral surface (75) of a CD.</p>
申请公布号 WO1992006904(A1) 申请公布日期 1992.04.30
申请号 US1990006200 申请日期 1990.10.22
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