Appeal 2006-2211
Application 10/266,215
a strip material attached to at least one of said rollers, said strip
material engaging the molten thermoplastic at a predetermined location to
create a variation in the thickness of the sheet.
The Examiner relies upon the following references as evidence of
obviousness:
Friesner US 3,478,138 Nov. 11, 1969
McAmish US 6,818,083 B2 Nov. 16, 2004
Appellant's claimed invention is directed to an apparatus and method
for producing a sheet of thermoplastic with variable thickness from molten
thermoplastic material. The invention entails a plurality of rollers through
which the molten thermoplastic material passes, with a strip material
attached to at least one of the rollers. The strip of material on the roller
forms an area of reduced thickness in the thermoplastic material. According
to Appellant, the use of such strip material on the roller obviates the cost of
casting new rollers with varying radii for forming different thermoplastic
sheets having a different pattern of reduced thickness.
Appealed claims 1-29 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Friesner in view of McAmish.
Appellant has not set forth an argument that is reasonably specific to
any particular claim on appeal. Accordingly, all of the appealed claims
stand or fall together with claim 1.
We have thoroughly reviewed each of Appellant's arguments for
patentability. However, we are in complete agreement with the Examiner
that the claimed subject matter would have been obvious to one of ordinary
skill in the art within the meaning of § 103 in view of the applied prior art.
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