Appeal No. 1998-2590
Application No. 08/255,083
insulation qualities, but instead is formed of a
“semiconductive” plastic/resin compound extruded over the
insulation layer (3). See, for example, column 4, lines 62+ of
Yamamoto.
Powers and Shealy disclose uninsulated or air-insulated
high voltage vibration resistant overhead electrical
conductors having a generally oval or elliptically shaped
outer configuration twisted along its length so as to provide
a continuously varying profile to the wind which acts to
dampen aeolian and galloping vibrations of the conductor. The
oval or elliptical shape of these uninsulated conductors is
achieved using specific sizing and arrangements of wires and
twisting or spiraling of such wires along the length of the
conductor. Neither Powers nor Shealy discloses or suggests
any insulation on their conductor. Thus, these patents
clearly provide no teaching or suggestion of a cable
comprising a conductor having insulation thereon that has “an
axially continuously rotating oval or elliptical outer
periphery which provides an outer periphery of the cable such
that the aerodynamic forces acting on the outer periphery of
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