Appeal No. 2000-1142 Page 2
Application No. 08/753,230
BACKGROUND
Appellants’ invention relates to a method for manufacturing a filter insert. In
particular, the invention is a method for manufacturing an accordion filter insert having a
peripheral sealing lip that is manufactured with the frame that holds the accordion filter
pack. According to Appellants, the sealing lip is elastically deformable which statically
holds the filter against housing. (Brief, p. 2). Claim 1 which is representative of the
claimed invention reproduced below:
1. A method for manufacturing an accordion filter insert, comprising the steps of:
providing a mold having a cavity that defines a lip;
introducing an accordion filter pack into said mold;
forming a frame about the filter pack by introducing into the mold a liquefied
polymer material, so that the polymer flows into spaces in the mold so as to form a frame
about the filter and a peripheral elastically deformable sealing lip on the frame when the
polymer subsequently solidifies, wherein the frame is manufactured concurrently with the
sealing lip.
CITED REFERENCES
As evidence of unpatentability, the Examiner relies on the following references:
Peras 2,889,183 Jun. 2, 1959
Brimberg 3,082,587 Mar. 26, 1963
Wolf 3,869,392 Mar. 4, 1975
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