| 摘要 |
The invention is coupling for tubes such as pipes or conduits suitable for liquids, gases, or electrical or optical cables and the like. Preferred embodiments of the coupling comprise a coupling body (11) comprising a well (12) adapted to receive and to optionally engage an end of a tube (20), a retaining ring (14) adapted to fit inside the well and to engage the outer surface (22) of the tube, and a stop (15) adapted to engage the retaining ring such that when the tube is extracted slightly from the coupling body, or when pressure is introduced within the well, as by fluid pressure, the retaining ring is displaced into contact against the stop in such fashion that portions of the ring not engaged by the stop are further displaced than those which are. Non-uniform displacement of the retaining ring about the tube results in engagement and binding between the inner edges of the ring and the outer surface, such that extraction of the tube from the coupling is prevented.
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