Appeal No. 96-4162
Application 08/313,901
(54). As shown in Figure 3, the surface of the mold core (54) is provided with a plurality of
teardrop-shaped projections (60). The resulting drain holes (24) formed in the molded tub
(16) by core pins (80) are thus recessed in teardrop-shaped depressions (28) formed in
the tub such that fabrics in the tub are not snagged on the edges of the holes (column 6,
lines 2 through 5).
Schwartzburg discloses an injection molding apparatus and method for molding
embossed plastic articles (column 1, first paragraph). The mold apparatus comprises,
inter alia, a movable upper platen (13) supporting core (15) having an outer molding
surface (15a) and lower stationary platen (10) which supports a cavity piece (11) having a
mold surface (11a) and a small block (17). An injection passage extends through the lower
stationary platen (10) and the small block (17) to admit liquid plastic resin. Engraved
areas (12) are cut into the mold surface (11a) to form bosses (30) on the article.
Zushi discloses a method of molding a cover for housing an air bag device (column
1, lines 5 through 8). An exemplary cover is illustrated in Figures 1 and 2. The method
uses a mold comprising a frame mold (15) for molding of the peripheral section of the
cover, upper mold (16) to form the upper surface of the cover, and central mold (12) and
lateral molds (13, 14) for forming the hollow sections of the cover. The steps of removing
the molded cover from the mold assembly, which involve sliding movement of the lateral
molds (13, 14) along the mating surfaces of the central mold to move the lateral molds (13,
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