Title:
MULTIPLE TUBE, AND METHOD AND APPARATUS FOR MANUFACTURING MULTIPLE TUBE
Document Type and Number:
WIPO Patent Application WO/2004/103600
Kind Code:
A1
Abstract:
A method and an apparatus for manufacturing a multiple tube capable of providing the tube having a bent part with excellent appearance at low cost and preventing an inner tube or an outer tube from being deformed at the bent part at which a filler is disposed. The multiple tube, comprising at least the inner tube and the outer tube, wherein the fiber-like filler is disposed between the outer and inner tubes at the bent part of the multiple tube. Slits are formed in the filler at specified pitches. Punching holes are formed in the inner tube on at least one of the downstream side and upstream side of the tube bent part thereof. Punching holes are not formed at the tube bent part.
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Inventors:
Nakajima, Tomoyuki c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Tashiro, Yoji c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Yoshino, Tamio c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Tashiro, Yoji c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Yoshino, Tamio c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Application Number:
PCT/JP2004/007079
Publication Date:
December 02, 2004
Filing Date:
May 24, 2004
Export Citation:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA (2500 Shingai, Iwata-shi, Shizuoka 1, 43855, JP)
Nakajima, Tomoyuki c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Tashiro, Yoji c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Yoshino, Tamio c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Nakajima, Tomoyuki c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Tashiro, Yoji c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
Yoshino, Tamio c/o Yamaha Hatsudoki Kabushiki Kaisha (2500 Shinga, Iwata-shi Shizuoka 1, 43855, JP)
International Classes:
F01N13/08; B21C37/06; B21D9/00; B21D9/15; B21D9/16; B21D53/84; (IPC1-7): B21D9/15; B21D9/18; F16L9/22
Attorney, Agent or Firm:
Turuwaka, Toshio (Room 512, Nishishinjuku House 29-4, Nishi-Shinjuku 4-chom, Shinjuku-ku Tokyo 23, 16000, JP)
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