Desired curvature producing method for tube, involves dividing straight tube into several segments, and bending end of tube at every segment to form corresponding local curvature of corresponding segment

摘要

The method involves dividing a straight tube into several segments, where the segments are located between two successive zones. An end of the tube is bent at every segment to form a corresponding local curvature of the corresponding segment, where a curved tube is formed after all the segments of the tube are bent relative to each other. An independent claim is also included for a device for producing a desired curvature in a tube.