Flexible joint with non-diffusive barrier

Details Flexible joint with non-diffusive barrier Flexible joint with non-diffusive barrier

1991-03-08

1992-07-28

Arola, Dave W.

Pipe joints or couplings

With fluid pressure seal

With separate, encased pipe-gripping means

285223, 285226, 285235, 285900, 285263, 277 3, A16L 2704

Patent

active

051335786

ABSTRACT:
A flexible joint 13 is employed to sealingly connect a pair of tubular members 16, 18 while still permitting limited articulated movement therebetween. The flexible joint 13 includes a housing 26 with upper and lower ring-like plates 32, 34 coaxially arranged about the tubular members 16, 18. A pair of annular elastomeric bearings 40, 42 are positioned within the housing 26 and act against shoulders 44, 46 of the tubular members 16, 18 to flexibly retain the tubular members 16, 18 within the housing 26. A bellows 20 sealingly couples the tubular members 16, 18 together while permitting movement therebetween. An annular chamber 56 formed between the bellows 20 and housing 26 is filled with a fluid, such as silicon or oil. Means is provided for adjusting the volume of the chamber 56 or volume of fluid in the chamber 56 to maintain an approximately zero pressure differential across the bellows 20.

REFERENCES:
patent: 1888026 (1932-11-01), Chapman
patent: 3023995 (1962-03-01), Hopkins
patent: 3746372 (1973-07-01), Hynes et al.
patent: 3944263 (1976-03-01), Arnold
patent: 4068868 (1978-01-01), Ohrt
patent: 4523612 (1985-06-01), Kuklo

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