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Title:
TUBE END FITTING
Document Type and Number:
WIPO Patent Application WO/2013/084771
Kind Code:
A1
Abstract:
The present invention reliably prevents displacement and falling out in the tube member axial direction, and improves safety, in a tube end fitting attached to an end of the tube member in which a reinforcing core has been helically embedded into the tube wall interior. This tube end fitting is provided with: a nipple (11) for connecting to another fitting, the nipple being fitted into an end of a tube member (1); an elastic packing (12) externally fitted to the end of the tube member (1); and a holder (13) for pressing the end of the tube member (1) into contact with the nipple (11) by clamping the elastic packing (12) from the outside and forcing an inner peripheral surface of the elastic packing (12) against the outer peripheral surface of the end of the tube member (1). Retaining ribs (22, 22) for wedging into the outer peripheral surface of the end of the tube member (1) are provided projecting out from the inner peripheral surface of the elastic packing (12). The retaining ribs (22, 22) are formed to have the same lead length as that of the helix of reinforcing cores (3) and to have a multiple-thread shape of a greater number of threads than the number of reinforcing cores (3).

Inventors:
HAYAKAWA Kentaro (INC. 1-33, Mitsuya Minami 1-chome, Yodogawa-ku, Osaka-sh, Osaka 35, 〒5320035, JP)
Application Number:
JP2012/080757
Publication Date:
June 13, 2013
Filing Date:
November 28, 2012
Export Citation:
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Assignee:
TOTAKU INDUSTRIES, INC. (1-33, Mitsuya Minami 1-chome Yodogawa-ku, Osaka-sh, Osaka 35, 〒5320035, JP)
東拓工業株式会社 (〒35 大阪府大阪市淀川区三津屋南一丁目1番33号 Osaka, 〒5320035, JP)
International Classes:
F16L33/22
Domestic Patent References:
WO2011155436A1
Foreign References:
JP2000310379A
JP2006038192A
JP2011089575A
Attorney, Agent or Firm:
NISHIMORI Masahiro (Kitahama Muneta Bldg, 9-10 Kitahama 1-chome, Chuo-ku, Osaka-sh, Osaka 41, 〒5410041, JP)
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Claims: