Appeal No. 2003-0091
Application No. 09/298,640
mounted in and bonded to the outer rigid channel with a
resilient material [11] which permits the panel to flex
within its border when exposed to said extreme wind-
and impact-conditions [Abstract].
One of the preferred adhesives 9 for bonding the inner rigid
channel to the laminated glass panel is polyvinyl butyral (see
column 3, lines 53 through 62). To this end, Schimmelpenningh
indicates that
[w]hen the laminate is being constructed, the PVB
interlayer sheet is normally larger than the glass
sheet, [and] when this excess PVB is present at the
edges of the resulting laminate this will function as a
self-sealing adhesive if the laminated panel with the
excess PVB is inserted into the inner rigid channel.
Generally, the laminate with the channel are autoclaved
together laminating the channel to the glass with the
excess PVB. Alternatively, the excess PVB at the edges
of the laminate may be trimmed flush with the edges of
the glass and used to fill the inner channel prior to
autoclaving to bond the laminated safety glass panel to
the channel [column 3, line 63, through column 4 line
7].
Schimmelpenningh does not teach, and would not have
suggested, a penetration resistant window responding to the
limitation in claim 1 requiring a penetration resistant sheet
extending from the edges of exterior and interior transparent
sheets in a direction substantially parallel with planes defined
by the exterior and interior sheets. The examiner’s reliance
(see page 6 in the answer) on the passage from Schimmelpenningh
reproduced in the immediately preceding paragraph to meet this
9
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