| 摘要 |
PROBLEM TO BE SOLVED: To enable suitable use regardless of the sale of a construction range. SOLUTION: An annular first air chamber 12 and second air chamber 13 are respectively longitudinally formed on the outer periphery of a body 2 of a nozzle 1, and first and second connecting passages 16 and 17 for communicating the respective air chambers with a passage 15 are formed between the respective air chambers 12 and 13 and the passage 15 in the body 2. The respective connecting passages 16 and 17 are formed in the forward inclining direction, and are set so as to become smaller in an inclinationθ2 of the second connecting passage 17 than an inclinationθ1 of the first connecting passage 16. A first through-hole 18 and a second through-hole 19 individually communicated with the first and second air chambers 12 and 13 are respectively formed in a sleeve 10, and a fluid supply means such as compressed air and an accelerating agent can be connected to to the respective through-holes 18 and 19. COPYRIGHT: (C)2004,JPO&NCIPI
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