Tube-to-hose coupling (crimp-sert) and method of making same

Details Tube-to-hose coupling (crimp-sert) and method of making same Tube-to-hose coupling (crimp-sert) and method of making same

1993-08-25

1995-05-23

Taylor, Dennis L.

Pipe joints or couplings

Nonmetal to metal

Internal member

285382, 29506, F16L 3320

Patent

active

054174619

ABSTRACT:
A hose coupling comprising a metal tube and a cylindrical insert concentrically arranged and held fast within the tube. The tube includes a radially outwardly flared sleeve integral with the tube and providing a tube end and a stop shoulder at the juncture at which said sleeve is flared outwardly. The insert includes (i) a barrel portion extending substantially the full length of the insert and (ii) a radially outwardly flared integral collar at one end of the barrel portion. The collar has an end face abutting the tube stop shoulder, an opposed hose end face, and a tapered circumferential land engaging the sleeve and extending axially at an outwardly diverging uniform taper from the tube end face to the hose end face. The sleeve is preformed to include a circumferential seat portion for seating the collar with the seat portion diverging outwardly at a uniform taper equal to that of the collar and beginning at the tube stop shoulder and continuing to a point at least equal to the length of said collar. A flexible hose is held within the sleeve and supported on the insert barrel portion and abutting the hose end face of the collar. In one crimping operation both the insert and hose may be secured to the metal tube.

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