| 摘要 |
A coupling, which may comprise an end fitting, for use with a flexible pipe or hose intended for high pressure service, includes an inner (3) and an outer sleeve (5) between which an end (2) of the hose or pipe is to be disposed and secured. The inner and outer sleeves are both deformable for gripping the end securely there between. The coupling is such that this can be achieved without increasing the average diameter of the pipe or hose over the length thereof within the coupling. The coupling may be deformed by a two stage process in which the inner sleeve is swaged outwards, prior to the outer sleeve being swaged inwards. Alternatively the outer sleeve may be crimped. Sealing means are provided at the inner sleeve to prevent fluid leaks from the interior of the hose or pipe. The seals may be comprised by O-rings (21,27) or self-energising elements (29,30,31) of the inner sleeve itself. Preferable the outer surface of the inner sleeve and the inner surface of the outer sleeve are provided with ribs or teeth (4) to facilitate gripping of the surfaces of the hose or pipe. The teeth may be directed away from the entrance to the annular socket in which the hose is disposed, and become progressively sharper in the direction away from this entrance. |
