Appeal No. 1999-2775
Application No. 08/549,847
Appendix
1. An apparatus for sanding or polishing a surface comprising:
a motor including a body and a working head which is mounted
on said body for sanding/polishing movement relative to said body
and to the surface to be treated, said working head including
means for attachment of an abrasive or polishing material to said
working head,
feed line means for directing a cold gas flow through said
body and working head to the surface to be treated, and
means for feeding a cold gas flow to the feed line means
comprising a compressed gas line, and a vortex tube mounted on
said body, said vortex tube having an outlet opening
communicating with said feed line means, and having an inlet end
connected to said compressed gas line.
13. An apparatus for sanding or polishing a surface comprising:
a motor including a body and a working head which is mounted
on said body for sanding/polishing movement relative to said body
and to the surface to be treated, said working head including
means for attachment of an abrasive or polishing material to said
working head,
a feed line means for directing a cold gas flow to the
surface to be treated, and
means for feeding a cold glow to the feed line means
comprising a vortex tube adjacent said working head and a
compressed gas line, said vortex tube having an outlet opening
communicating with said feed line means, and having an inlet end
connected to said compressed gas line.
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