| 摘要 |
PROBLEM TO BE SOLVED: To intensively arrange coils depending on installation positions, while preventing the diameter enlargement of the coils and the twisting of a hose due to spring back. SOLUTION: The resting coils 2 already in a wound shape are applied over the outer periphery of a hose body 1, to prevent the spring back of the coil 2 from being left, and the coils are expanded with their pitches to be shifted to cause inner peripheries 2a of the coils 2 to bite into an outer periphery face 1a of the hose body 1 at shift positions and then they are held, without being restored.
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