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Variador de velocidad perfeccionado caracterizado esencialmente por el hecho de establecer sobre cada cara de la polea extensible utilizada como base sobre el eje motor un ballestín estrellado que actúan opuestamente para obligar el acercamiento máximo de las dos partes de la polea apoyándose los ballestines en el mismo eje de la polea.
ES115531U1965-08-171965-08-17Un variador de velocidad perfeccionada.
ExpiredES115531Y
(es)