| 摘要 |
Universal joint device for a tube, comprising: a connection casing 10 which comprises a main cavity 13 defined by a concave spherical internal wall of a connection casing body; two split rings 20, spaced axially, whose inclined external circumferential walls are placed in relative sliding contact with the concave wall, each of the split rings being deformable, so as to be inserted in the main cavity 13, and expandable inside the main cavity, to assume their working position; and a spacing and sealing ring 30, interposed between the two split rings. <IMAGE>
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