Appeal No. 2001-1982
Application 08/892,716
mounted, there will not be a snug fit between the housing and the
CRT, which allows foreign substances such as dust to enter the
monitor through the gap between the CRT and the seating surface.
Thus, the APA discloses that gate landings are formed on a CRT
seating surface of a housing and that such flash protrusions at
the gate landings cause the problem that the seating surface does
not fit snugly with the CRT. The APA discloses that the problem
of fit is eliminated by grinding back the protrusion, which
requires an extra step in the manufacturing process.
Arai discloses, in connection with figures 40 and 41
(col. 23, lines 14-30):
[U]pon molding, a groove portion 115A which is recessed
inside is formed in a surface of a portion of a molded
article 38A which is contiguous to the gate 39 of the hot
runner 40. . . . Since a gate slug 39A formed in the
gate 39 of the hot runner 40 will not project upward above a
surface 38A-2 of the molded article, the mating article can
be abutted with each other by surface contact.
The motivation for recessing the gate landing and gate slug is
stated in the last sentence: so that a mating surface can be
abutted by surface contact. Arai further discloses that the
product can be a CRT or any product made by injection molding
(col. 26, lines 34-39).
With respect to independent claims 1, 2, and 6, the APA does
not teach the gate landing being recessed to a depth for fully
recessing the gate flash to avoid interference between the gate
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