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Priority to ES1974201563UpriorityCriticalpatent/ES201563Y/en
Publication of ES201563UpublicationCriticalpatent/ES201563U/en
Application grantedgrantedCritical
Publication of ES201563YpublicationCriticalpatent/ES201563Y/en
Extendable pulley, characterized essentially by, to be integrated on the basis of a tubular drive shaft, operative, for dragging the lining and equipped with a solidary plate, with it and one facing it, capable of axial displacement elastically loaded by axial expansion spring, covered by two nestable cups, one integral with the movable plate and the opposite integral one of a plate fixed on the shaft, the movable plate comprising lubrication and rolling means. (Machine-translation by Google Translate, not legally binding)