Appeal No. 1997-4111 Page 10
Application No. 08/540,947
Claim 7 reads as follows:
A mold venting plug in the form of an elongated rod,
comprising a side surface between two ends, a molding
surface at one end, at least one groove formed in the
side surface, each such groove extending from the end
opposite the molding surface to a point spaced apart from
the molding surface, the side surface at said one surface
being without grooves, and complementary to the
surrounding surface defining the hole.3
Cain discloses a mold vent plug. Figure 1 of Cain shows
a fragment of a mold 10 for molding a tire at the molding
surface 12 having a bore 14 therein with a counterbore 16 at
the
molding surface 12 thereof. A gap 18 is formed between the
counterbore 16 and a vent plug 20 inserted in the bore 14 of
the mold. As illustrated in Figure 2, the plug 20 has an axis
hole 22 plugged at the molding surface end of the plug 20.
The hole 22 ends in the head portion 24 of the vent plug 20
which has an enlarged diameter head for press fitting into a
straight bore in the mold. The straight bore 14 in the mold
is counterbored as at 16 to form the gap 18 between the mold
3There is no proper antecedent basis in claim 7 for
either "the surrounding surface" or "the hole."
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