Compact disc lower case
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United States of America Patent
Stats
-
Nov 18, 1997
Grant Date -
N/A
app pub date -
Aug 16, 1996
filing date -
Aug 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lower case of a compact disc case is molded from a resin. The lower case comprises a rectangular bottom portion, upwardly extending lateral wall portions formed at a pair of opposite sides of the bottom portion, and lateral edge portions outwardly extending from the base portions of the lateral wall portions. To facilitate the installation and removal of a compact disc, the lateral wall portions have first recesses. The lateral edge portions have second recesses corresponding to the first recesses. The formation of the second recesses restrains the resin supplied to the bottom portion from being suddenly increased in flowability at the lateral edge portions at the time of molding. The formation of the second recesses reduces a difference in thickness between the bottom portion and the lateral edge portions. This results in substantial equalization of the shrinkage amounts of the bottom portion and the lateral edge portions at the time of molding.
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