Appeal No. 1998-3001
Application No. 08/318,645
We reverse each of the examiner’s rejections of
appellant’s claims under 35 U.S.C. § 103.
Independent claim 1 is drawn to a dust bag comprising,
inter alia, a filter bag having two wall portions, and a
protective layer of an air permeable nonwoven web, the
protective layer being laid on the inner surface of a wall
portion without bonding, wherein the protective layer is in
the form of a protective strip being narrower than the wall
portions with longitudinal ends positioned and welded between
at least the longitudinally opposing interconnected edges of
the wall portions.
Independent claim 6 sets forth a method for producing a
dust bag comprising, inter alia, providing a first web of air-
permeable material and a second web of air-permeable material
narrower than the first web, and cutting off a portion of the
first web with the second web positioned therein, and sealing
the cut off portion at both ends, with the second web being
held at both sealed ends of the cut off portion.
4
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