Appeal No. 2000-1142 Page 4
Application No. 08/753,230
cavity which defines a lip; (2) introducing the filter pack into the mold; and (3)
introducing a liquefied polymer into the mold to form the frame.
Brimberg describes air filters and the method for manufacturing thereof. Brimberg
discloses the filters comprise an outer flat flexible section (represented by 16b of the
figures). Brimberg discloses the filter can be formed in one piece wherein the different
parts of the filter are joined to one another. (Col. 2, ll. 68 to 70). The filter is formed by
placing the filter material into the die or mold which has cavities and passages which
forms the filter frame. (Col. 2 l. 70 to col. 3, l. 3). The filter is formed by adding a liquid
polymer to the mold or die. Brimberg discloses the polymer is brought into intimate
physical contact with the filter material. (Col. 3, ll. 21 to 25). When the flowable
polymer is introduced into the mold, the polymer impregnates the pores of the filter
material and welds and fuses the filter material with the supporting frame casing. (Col. 3,
ll. 25 to 30). The method of Brimberg differs from the invention of claim 1 in that the
filter media is not described as accordion.
Wolf describes a flat or planar filter insert which comprises an accordion filter.
(Col. 1, ll. 1 to 7). The filter is described as “a strip or sheet of the filter media which is
pleated or folded in a zig-zag pattern.” (Col. 1, ll. 37 to 40). Wolf also discloses the
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007