Appeal No. 2007-0517
Application No. 10/768,647
10) To improve absorptive capacity of the seam, Roslund teaches that “it is
desirable to provide the cement strip with recurrent openings of appreciable size at
frequent intervals.” (Id. at col. 3, ll. 72-74).
11) Roslund’s recurrent openings are defined as “areas where the fabric is not
bonded and through which the moisture absorbed from the paper at the working
surface of the felt can readily penetrate.” (Id. at col. 4, ll. 5-10).
12) Roslund ‘097 teaches that increasing the number of openings improves
absorptive capacity at the seam but at the expense of seam strength. Specifically,
Roslund ‘097 states:
It is obvious that the grater the total area of the openings in relation to
the bonded area of the fabric, the greater will be absorptive capacity of
the drier felt at the seam. Of course, the total area of openings should
be kept within practical limits as otherwise there will be insufficient
bonding to make a strong seam which will withstand the longitudinal
strain on the drier felt during operation.
(Id. at col. 4, ll. 65-73).
13) Roslund ‘097 states that:
A further primary object of the invention is to provide a cement seam
for drier felts of such character that the porosity and moisture
absorbing capacity of the felt at the seam will be maintained to a
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