Guidocorona wrote "The principle appears to b that counterrotating spirals of conductors cause strands to cross at 90 degree angles, minimizing inductance and capacitance. The core of the PC is apparently hollow."
There used to be patents listed for both the winding geometry and the "magic dust" used in these designs on the website.
I read them both. The winding geometry description was difficult to follow and I couldn't tell in what way this layup differs from other cables that use a woven geometry such as Kimber, etc.
It is amazing what can be patented these days. I would have thought that this weave is not sufficiently different to all prior artwork of this type to merit a patent award.
I DIYed a couple of powercords many years ago and used a similar weave. It did seem to work better than the same wires just bundled together.