Appeal No. 95-4113
Application No. 08/124,334
axis also being at an acute angle with the axis of drum rotation.
Independent claim 21 includes the limitations that the set of
circumferentially spaced nozzles each include a tip having an
axis generally disposed in a radial plane of the drum, the plane
including the axis of drum rotation; the tips each being disposed
within an imaginary cylindrical extension of the drum surface
extending outwardly from the side edge of the drum in a direction
away from the remote side; and the tips each being oriented to
direct a flame toward a side of the drum and the cylindrical2
extension at a location near the edge whereby to impinge on
superposed, juxtaposed edge portions of the web projecting from
the surface past the side edge.
With respect to the above-identified limitations from
independent claims 1, 21, 22 and 23, the examiner determined that
[i]t would have been obvious to one having ordinary
skill in the art to have positioned the flame nozzle
taught by McDowall at an acute angle, since Pommer
recognizes the desirability of impinging a flame
2We interpret the phrase "the tips each being oriented to
direct a flame toward a side of the drum and the cylindrical
extension at a location near said edge" as requiring the tips to
be an acute angle with respect to the axis of drum rotation so
that the tips will direct the flames upwardly against the drum
and the lower surface of the web.
7
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