Appeal 2007-2743
Application 10/766,754
Claims 1, 7, 9, 14, 15 and 20
Claims 1, 7, 9, 14, 15 and 20 require partially tearing rows of
perforation after air-filled cushions have been formed between the rows of
perforation. Claim 1 recites “means engagable with the string of air-filled
cushions for partially tearing the material along the rows of perforations”.
Claim 7, which depends from independent claim 6, recites that “the material
is torn by continuously engaging an edge portion of the material with a feed
roller after the air-filled cushions are formed”. Claims 9 and 14 recite
“partial tearing along the rows of perforations between the inflated
chambers”. Claims 15 and 20 recite “air-filled packing cushions” and
“partial tearing along the rows of perforations between the cushions”.
Fuss discloses a string of air-filled plastic film cushions separated by
perforations (19) for tearing the cushions apart (col. 1, l. 49 – col. 2, l. 2; col.
2, ll. 49-53; fig. 6).
Bolton discloses
a method for making a supply of partially separated multibag units,
comprising first passing a perforated chain of side-sealed bags
through a first set of driven nip rollers, then passing said chain
directly to a second set of nip rollers having a partial nip of selected
width less than the width of said chain, while driving said second nip
rollers at a speed greater than said first nip rollers sufficient to
partially separate the bags at their representative lines of perforation,
and while cyclically completing the nip of said second nip rollers at
predetermined intervals corresponding to the number of bags desired
in each multibag unit. [col. 2, ll. 26-37]
* * *
Downward pressure is exerted as indicated at arrow 59A on partial
separator mechanism 59 having pivot arm 62 supporting partial
separator rollers 63A, B, etc. Pressure at 59A is normally held
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Last modified: September 9, 2013