Appeal No. 1998-2035
Application 08/458,783
unpatentable over Ruza in view of Lyon and Daniels. Before
turning to our evaluation of the combination of Ruza, Lyon and
Daniels, we look to the language of claim 1 on appeal to
derive an understanding of the scope and content of the claim.
Claim 1 defines an apparatus for lubricating and curling a rim
of a paperboard container comprising a housing block (14)
defining a central recess (14a), a curl-forming channel (16a)
disposed in the recess for curling the rim of a paperboard
container, said housing block (14) defining an annular liquid
channel (20) in surrounding relationship to said curl-forming
channel (16a) for distributing lubricating liquid, and a
porous liquid transfer ring (22) formed of a felt or open-
celled foam material, said liquid transfer ring (22) being
attached to said housing block (14) in covering relationship
to said annular liquid channel (20) so that lubricating liquid
saturates said liquid transfer ring (22), said liquid transfer
ring (22) includes a circular edge surface which defines a
central opening that extends partially over said curl-forming
channel (16a) to transfer lubricating liquid to the rim of a
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