I finally got around to checking out the site you recommended...fascinating
The inventor actually has built prototypes as;
> Various proto types built to date have demonstrated directional motion
or a
> translational force due to the asymmetrical paths of the eccentric
masses;
> in a gravitational field of the earth, and symmetrical the system can
translate
> in zero gravity by implementation of variably controlled reference
environments
> that represent a pseudo gravitational environment to react to the
existing orbit
> of a satellite to nudge in a direction that the asymmetrical mass is
causing
> it to translate.
Translation of mass inertia to mechanical force, precisely.