| http://www.w3.org/ns/prov#value | - d to each of said braking means and a linkage means including a one-bar pivotal linkage on a second shaft axially positioning said braking means over and adjacent to at least one of said concentric ring rotors about an arcuate position of said second shaft; and, e. a plurality of drive coil means axially aligned and mounted on a third shaft means including a one-bar pivotal linkage on said third s
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