US 6,981,500 B2 | ||
Respiratory tube without fastening assemblies | ||
Yun-Chian Li, No. 176-1, Shang-Fang-Liao, Lin 6, Shang-Liao Li, Hsin-Pu Chen, Hsin-Chu Hsien (Taiwan); Kuang-Jeng Lee, No. 176-1, Shang-Fang-Liao, Lin 6, Shang-Liao Li, Hsin-Pu Chen, Hsin-Chu Hsien (Taiwan); Kuang-Yin Lee, No. 176-1, Shang-Fang-Liao, Lin 6, Shang-Liao Li, Hsin-Pu Chen, Hsin-Chu Hsien (Taiwan); and Jen-Yin Liu, No. 176-1, Shang-Fang-Liao, Lin 6, Shang-Liao Li, Hsin-Pu Chen, Hsin-Chu Hsien (Taiwan) | ||
Filed on Oct. 24, 2003, as Appl. No. 10/691,491. | ||
Prior Publication US 2005/0087192 A1, Apr. 28, 2005 | ||
Int. Cl. B23C 11/16 (2006.01); A62B 18/08 (2006.01) |
U.S. Cl. 128—201.11 | 6 Claims |
1. A front-worn respiratory tube without fastening assemblies namely fastening rings, hooks, buttons, clamps, sheaths or strips, comprising 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 sections 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, and a maximum of four wedge sets having adjustable lengths are utilized for adapting to head dimensions and a height of a noise bridge of a user. |