Coupling for seating a tube end in a fitting

Details Coupling for seating a tube end in a fitting Coupling for seating a tube end in a fitting

1991-08-23

1993-05-25

Arola, Dave W.

Pipe joints or couplings

With fluid pressure seal

With separate, encased pipe-gripping means

285421, 403105, F16L 1704

Patent

active

052133770

ABSTRACT:
A fitting is formed with an outwardly open generally cylindrical bore centered on an axis and having an inner surface of a predetermined inner diameter. A tube end fits axially into the bore and is formed with a radially outwardly open groove, and a partial stiff sleeve of elastically deformable and strong material is engaged in the groove and has a frustoconically outwardly flared sharp outer edge of a predetermined outer diameter. Interengaging formations on the sleeve and on the tube end spread the sleeve and force the edge to bite into the inner surface of the bore on axial outward displacement of the sleeve and tube end. An elastomeric seal ring on the tube end offset from the groove radially outwardly engages the bore.

REFERENCES:
patent: 1429299 (1922-09-01), Pleister
patent: 2968851 (1961-01-01), Hardy
patent: 4056037 (1977-11-01), McIntyre
patent: 4610468 (1986-09-01), Wood
patent: 4968200 (1990-11-01), Mark
patent: 4984945 (1991-01-01), Bergner

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