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ES137646A1935-03-071935-03-07Mecanismo para la transmisión con relación variable de la fuerza de un árbol motor a un árbol accionado.
ExpiredES137646A1
(es)
Un elemento de impulsión combinado con engranaje de cambio de velocidad para transformar un movimiento de rotación constante en otro movimiento de rotación con una variación desde 0 a un máximo fijado.