Appeal No. 2000-0345
Application No. 08/419,219
1, lines 15-19, and Fig.1, which shows a conventional room fan. The reference teaches
the attachment of a solid insecticide to a blade of a fan, wherein the insecticide is
impregnated into a flexible carrier which is then attached to a blade of the fan by means
such as an adhesive. See id. at lines 68-72. In addition, Clarke teaches that the
“adhesive composition is not critical except that it provide sufficient bonding action to
hold the insecticide carrier to the blades under the centrifugal forces normally rotated by
rotation of the fan blades,” id. at col. 2, lines 34-37. The attachment of the insecticide to
the fan blades allows the insecticide vapors to be “intimately and uniformly mixed with
relatively large volumes of air, thus assuring complete distribution of the insecticide
throughout the room or other space to be treated, and insuring against dangerous, toxic
concentrations in any isolated area of the room.” Id. at lines 55-61.
It would have been obvious to one of ordinary skill in the art to attach the insect
control article of Kauth to a conventional room fan because Clarke teaches that
attachment of an insecticide to a fan blade allows for complete distribution of the
insecticide throughout the room. Kauth teaches the use of the insect control article in a
closet, and the ordinary artisan would have recognized that more complete distribution
of the insecticide would provide more complete protection against textile insects,
especially in closets, where clothes and other articles may be closely hung together,
preventing the insecticide from diffusing through the entire closet. In addition, it would
have been obvious to the routineer to attach the insect control article to a part of the fan
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