RUOTA GEMELLATA AUTO-ORIENTABILE DEL TIPO COMPRENDENTE UNA COPPIA DIROTELLE COASSIALI

摘要

A self-orientatable twin wheel which includes a support which supports a pivot upon which are mounted a pair of wheels. The pair of wheels are provided with hollow tangs into which the pivot is inserted. Bushes with inner and outer collars are interposed between the pivot and tangs. The inner and outer collars engage with grooves provided in the pivot and tangs.