Appeal No. 1998-1805
Application No. 08/596,734
The appellants’ invention is directed to a device for
impregnation of webs of porous materials. The invention is
illustrated by reference to claim 1, which reads as follows:
1. A device for impregnation of webs of porous
materials with a liquid impregnating medium under
increased pressure, comprising a roller rotatable
about a horizontal axis; a trough arranged so that
said roller is partially inserted in said trough to
form a chamber between an inner surface of said
trough and an outer surface of said roller; means
for supplying an impregnating medium into said chamber;
and means forming an inlet slot for introducing a
web to be impregnated into said chamber and an outlet
slot for withdrawing the impregnated medium from
said chamber, said chamber having a cross-section
which over a path from said inlet slot to said
outlet slot narrows and again increases many times;
and sealing means for sealing said inlet slot and
said outlet slot.
THE REFERENCES
The references relied upon by the examiner to support the
final rejection are:
Fornelli 2,779,183 Jan. 29,
1957
Long 4,702,943 Oct.
27, 1987
THE REJECTION
Claims 1, 3, and 4 stand rejected under 35 U.S.C. § 103
3
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