To provide a joint assembly for coupling a casing.
The joint assembly 40 for tightly securing flanges 42 and 44 with each other includes a bolt 50, a collar 52 and a nut 54. The bolt 50 extends through an aperture in the flange 42 and an aperture in the flange 44. The collar 52 is arranged around an axis of the bolt 50. The nut 54 is fastened to the bolt 50. The collar 52 is arranged between one of the flanges 42 and 44 and the nut 54 or a head of the bolt 50. The collar 52 includes a first member 62 and a second member 64, and the second member 64 is arranged at a first end of the first member 62. The second member 64 has an approximately U-shaped cross section. The second member 64 has first and second radially inner ends 70 and 74, and radially outer middle portions 72 and 76. An axial space 78 is defined between the first radially inner end 70 and the second radially inner end 74 of the second member 64.
Hiroyuki Nagai
Katsuomi Isogai
Satoshi Nazuka
Junpei Okada
Hideyuki Mori
Yukihiro Hotta