Appeal No. 2001-0109
Application 08/871,898
around the mouth of the bag; the plug has an outward-facing
surface;
the apparatus includes a membrane, which can be pierced by, and
seal around, a
sharp hollow needle;
the dimensions of the outward-facing surface of the plug, in
relation to the dimensions
of the mouth of the bag, are such that, in order for the
mouth to be fitted over
the plug, the lip of film that defines the mouth of the
bag must be stretched; the said lip lies stretched over the
outer surface of the plug; the apparatus includes a ring, and
the ring has an inward-facing surface, which is
complementary to the outward-facing surface of the plug;
the inward-facing surface of the ring, and the outward-facing
surface of the plug, are
substantially circular in form, their circular forms being
concentric;
the dimensions of the ring, in relation tot he dimensions of
the plug and of the lip of
film that defines the mouth of the bag when the lip lies
stretched over the outer surface of the plug, are such
that the ring is a tight
interference fit over the lip of film when the
lip is stretched over the outer surface of the plug;
the ring lies pressed over the lip and over the plug, and
encircles
the plug;
whereby the lip of film that defines the mouth of the bag is
sealed and gripped, tightly
and securely, between the outward-facing surface of the
plug and the inward-facing surface of the ring;
the ring is of a relatively rigid plastic material, and is
annular in form, and its form is
characterized as thick and chunky;
the tightness of the interference fit between the plug and the
ring, the said lip of film
being trapped therebetween, is such that the bag and the
ring are held firmly
and securely to the plug by friction induced by the tight
fit;
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