Appeal No. 2003-0292 Page 13
Application No. 09/584,032
to their impact with the substrate surface which is peened and coated when the mixture
of metallic powder and peening particles are propelled against the surface (Fig. 1) at a
high velocity sufficient to peen the surface and impact and bond the metallic powder
onto the surface.
Assuming for argument sake that the shot peening particles in Babecki are not at
least partially coated with a sacrificial metal such as zinc when the peening particles and
metallic powder are admixed in a hopper prior to spraying (Example 1), or at the very
least when they are propelled together through the conduit (3) and converging spray
nozzle (6) of Figure 1 , the examiner should determine if it would have been obvious to
one of ordinary skill in the art at the time of appellants’ invention to have the peening
particles in Babecki coated with the sacrificial metallic powder disclosed therein in view
of the teaching in Louis regarding coating a substrate by using carrier particles coated
with metallic powder materials, which coated carrier particles are used to “hammer” the
finely divided metallic particles onto the substrate (Louis, col. 2, lines 29-36), or the
teaching in Louis column 4, lines 18-24 and Example 5, 6 and 7 wherein it appear that
both powdered metallic material and coated carrier particles are used together to
provide a coating on a substrate.
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