US Patent 7690225 Flexible protective corrugated tube

The invention relates to a flexible protective corrugated tube (1) comprising at least two different yarns and a plurality of larger-diameter zones (2) and a plurality of smaller-diameter zones (3) which are alternated along the length of the tube (1). The inventive tube is characterized in that first yarns (4) form a weave of weft courses combined with stitch courses. In addition, the tube can comprise second yarns (5) which also form a weave of stitch courses combined with weft courses. In this way, the tube obtained has improved flexibility, adaptability and bendability.