Sprinkler nozzle of spray cylinder, comprises two hollow structures with multi-surfaced edges and multi-surfaced rings at contact surfaces such that rings contact edges when structures are mutually connected

摘要

A pair of hollow structures (2,4) comprises multi-surfaced edges and multi-surfaced rings formed at respective contact surfaces such that the rings contact the edges when the structure (4) is inserted into the structure (2). Independent claims are also included for the following: (1) spray cylinder; and (2) manufacturing method of sprinkler nozzle.