| 摘要 |
The disclosed flexible coupling is joining sections of rigid conduit, with provision for angular, axial and lateral flexiblity, and static sealing against fluid leakage. The conduit sections are interconnected by a tubular metal bellows which has the shape of a truncated cone for applications requiring increase fatigue life. The bellows is secured to ferrules either welded or swaged to the conduit ends. An E-seal, O-ring or similar seal is provided in a recess in one ferrule abutting the end of the metal bellows to provide a sealing means which does not flex despite lateral, axial and angular flexure of the bellows. The bellows is secured to the respective ferrules by a coupling nut at one end and by welding at the other end. In an alternate embodiment the said other end of the bellows is swaged in place between the ferrule and the conduit section.
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