Appeal 2007-1399
Application 10/013,123
the starter filter sheet having a first surface and a second
surface,
wrapping the pleated starter filter sheet around a core,
the core and the starter filter sheet interfaced with one another
in a flow-proof manner; and
joining a first fold and a second fold of the started filter sheet to create
a joined filter sheet,
wherein wrapping the pleated starter filter sheet positions the first fold
and the second fold along a radial axis of the core.
The Examiner relies upon the following references as evidence of
obviousness:
Bauer US 2,599,604 Jun. 10, 1952
Bauer US 3,025,963 Mar. 20, 1962
Jackson US 3,076,555 Feb. 5, 1963
McKinlay US 3,293,830 Dec. 27, 1966
Shikaya US 3,908,523 Sep. 30, 1975
Henschel, Jr. US 4,186,099 Jan. 29, 1980
Naruo US 4,876,007 Oct. 24, 1989
Olsen US 6,135,130 Nov. 13, 2001
Appellants' claimed invention is directed to a method of producing a
filter having radial pleats. The method entails wrapping a pleated started
filter sheet around a core and adjoining first and second folds of the sheet to
create a joined filter sheet. The first and second folds are positioned along a
radial axis of the core.
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