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, 1975Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 3, 2007