| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive and light underwater respirator realizing diving for a long period of time, conveniently usable by a woman and useful for saving a life. SOLUTION: An article 3 having buoyancy is attached to a pipe 1 of 2 and one of 2 and a suction port 9 having a suction valve 7 and a discharge valve 8 is attached to the other. COPYRIGHT: (C)2004,JPO
|
