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Title:
FLUID CARGO HANDLING JOINT
Document Type and Number:
Japanese Patent JP3728135
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To ensure sufficient sealing property even at an extremely low temperature by protrusively providing a protruding part on the bottom wall of the annular seat part of a tube, and forming a recessed part to be closely adhered to the protruding part at an extremely low temperature on the seal bottom surface of an annular seal member.
SOLUTION: A protruding part 17 consisting of a short cylindrical body is protrusively provided toward a taper part 7 in the center of the bottom wall surface 16 of the annular seat part 14 of a tube 6. An annular projection 18 is provided on the front surface 17B of the protruding part 17. A recessed part 26 is formed on the seal bottom surface 5B of an annular seal member 5. The inner wall surface 26A of the recessed part 26 has a diameter directional dimension such that it makes contact with the side wall surface 17A of the protruding part 17 at ordinary temperature, and thermally contracts at an extremely low temperature and closely adheres to the side wall surface 17A of the protruding part 17. Further, the annular projection 18 is bitten into the recessed surface 26B of the recessed part 26 of the annular seal member 5 at ordinary temperature and extremely low temperature. According to this, the annular seal member 5 can be surely closely adhered to the annular seat part 14.


Inventors:
Sekiguchi Yu
Naoki Yamamori
Atsushi Iida
Morii Shigeaki
Masakatsu Kojima
Hisao Takezawa
Hiroshi Matsui
Application Number:
JP8010499A
Publication Date:
December 21, 2005
Filing Date:
March 24, 1999
Export Citation:
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Assignee:
Tokyo Gas Co., Ltd.
Toho Gas Co., Ltd.
OSAKA GAS CO.,LTD.
Tokyo Trading Co., Ltd.
Niigata Loading Systems Co., Ltd.
International Classes:
F16L23/16; B67D7/04; B67D7/78; F16L17/06; F16L19/03; F17D5/02; (IPC1-7): F16L19/03; B67D5/04; B67D5/60; F16L17/06
Domestic Patent References:
JP7002693U
JP7180787A
JP6109175A
JP2501587A
JP62108686U
Attorney, Agent or Firm:
Furuya Fumio
Eisuke Suzuki