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Publication of ES201563YpublicationCriticalpatent/ES201563Y/es
Polea extensible, caracterizada esencialmente por, integrarse a base de un eje de arrastre tubular, operativo, para arrastre de forra y dotado de un plato solidario, con el mismo y uno enfrentado a él, susceptible de desplazamiento axial cargado elásticamente por resorte de expansión axial, recubierto por dos cazoletas encajables, una solidaria del plato móvil y la opuesta solidaria de un plato fijado en el eje, comprendiendo el plato movible medios de engrase y rodadura.