초록 ▼

A flexible tubing coupling employs ferrules at the tubing ends, each ferrule being connected to an annular end fitting by way of a bellows. The end fittings are statically secured together by retainer halves encircling the end fittings and captured there by a rigid ring. Engagement between ferrule r

A flexible tubing coupling employs ferrules at the tubing ends, each ferrule being connected to an annular end fitting by way of a bellows. The end fittings are statically secured together by retainer halves encircling the end fittings and captured there by a rigid ring. Engagement between ferrule rims and inner spherical surfaces on the retainer halves prevent undue extension and deflection of the bellows while maintaining a uniform stress distribution on the coupling components. Various end fitting static seal configurations are also disclosed.

대표청구항 ▼

In a flexible tubing coupling for joining first and second tubing ends while permitting relative motion between said ends, the combination of A. first and second flanged ferrules for positioning at the respective tubing ends, B. first and second metal bellows secured at one of their ends respectivel

In a flexible tubing coupling for joining first and second tubing ends while permitting relative motion between said ends, the combination of A. first and second flanged ferrules for positioning at the respective tubing ends, B. first and second metal bellows secured at one of their ends respectively to said first and second ferrules, C. first and second end fittings secured to the respective opposite ends of said bellows, said first and second end fittings having opposing faces which when compressed axially coact to comprise a static fluid-tight seal, and D. a retainer assembly comprising 1. a pair of identical semicircular retainer halves aligned together end to end to form a ring encircling said end fittings and ferrule flanges, said retainer halves and end fittings having opposing surfaces which wedge together so as to axially compress the end fittings when the retainer halves encircle the end fittings, and 2. a rigid ring for snugly encircling and capturing the retainer halves so as to maintain them in encircling engagement on said end fittings.