Method for forming joints in pressurized fluid systems

Details Method for forming joints in pressurized fluid systems Method for forming joints in pressurized fluid systems

1984-11-23

1986-11-18

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Shaping by direct application of fluent pressure

29523, 285354, B23P 1700, B21D 3900, F16L 1700

Patent

active

046227326

ABSTRACT:
A joint assembly for use with pressurized fluid systems employs a tube that is secured to a ferrule, preferably by hydraulic swaging. During the swaging operation, a projecting end of the tube can be expanded against a die and thereby pre-sized. A sealing ring is then placed on the projecting end of the tube and enclosed within a cavity formed when a fitting is secured to the ferrule by a retainer. A spring that energizes the seal can be included in the cavity. The seal is formed between concentric circumferential surfaces and is independent of axial movement of the joint elements. A metal-to-metal backup seal can be formed by the ferrule and the fitting.

REFERENCES:
patent: 4152821 (1979-05-01), Scott
patent: 4165106 (1979-08-01), Gladden
patent: 4368571 (1983-01-01), Cooper
patent: 4388752 (1983-06-01), Vinciguerra
patent: 4420867 (1983-12-01), Busse
patent: 4421237 (1983-12-01), Nusbaumer et al.
patent: 4456287 (1984-06-01), Bisonaya
patent: 4458926 (1984-07-01), Williamson

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