Respiratory tube without fastening assemblies

Abstract

A front-worn respiratory tube without fastening assemblies namely fastening rings, hooks, buttons, clamps, sheaths or strips, includes a head-top-portion tube, a forehead-portion tube, a mouth-eyebrow-portion tube, a mouthpiece and a fish-mouth-shaped mouthpiece in a downward direction in sequence. Wherein, the aforesaid five parts are either wedge-type structures or join-type structures at three parts (from the head-top-portion tube to the forehead-portion tube, from the forehead-portion tube to the mouth-eyebrow-portion tube, and from the mouth-eyebrow-portion tube to the mouthpiece portion). The forehead-portion tube utilizes water drag force to have the tube steadily staying close to the user's head. A water-drop-shaped sectional area at the head-top-portion tube is capable of minimizing water drag. The aforesaid structure according to the invention is adaptable to head dimensions and a height of a nose tip of the user.

Dependencies are inferred from the claim text.