| 摘要 |
PCT No. PCT/FR96/01128 Sec. 371 Date Mar. 14, 1997 Sec. 102(e) Date Mar. 14, 1997 PCT Filed Jul. 18, 1996 PCT Pub. No. WO97/04268 PCT Pub. Date Feb. 6, 1997The invention concerns a device adapted to be fixed and sealed to at least one cylindrical member (1, 1'), characterized in that it includes: a first sleeve (2), a second sleeve (3) coaxial with the first sleeve (2) having a greater capacity for deformation than the first sleeve (2) and fixed and sealed to the first sleeve (2) at both ends, at least two cylindrical rings (4, 5) coaxial with the second sleeve (3), pressed against the latter and each fixed by one edge to one end of the second sleeve (3), and means (6, 6') for injecting a pressurized fluid between the first sleeve (2) and the second sleeve (3).
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