Tube connection for thin-walled small-diameter metal pipes

Details Tube connection for thin-walled small-diameter metal pipes Tube connection for thin-walled small-diameter metal pipes

1988-01-20

1989-06-27

Callaghan, Thomas F.

Pipe joints or couplings

Particular interface

Tapered

2853825, 29523, F16L 1314

Patent

active

048423106

ABSTRACT:
A pipe connection for thin-walled, small-diameter metal pipes, in particular for braking lines, for fuel lines, and for hydraulic lines for motor vehicles, is provided with a sleeve (3) into which is sealingly set at least one first conically flared metal pipe (1) (so-called flare according to ISO 4038) in a bore cone (25) under the compression force of a tensioning body (8, respectively, 9) resting against the flare (23).
In order to provide a pipe connection without screw parts and taking into account the narrow assembly or mounting quarters and in order to achieve a satisfactory sealing effect for the full duration of the operation of the connection, it is proposed to employ a sleeve (12) with an axially fixed annular channel (18). A radially partially thin-walled pressure bushing (15) is shifted onto the first metal pipe (1) up to resting at the flare (23). The pressure force of the flare (23) against the sealing seat (14) in axial direction is generated by a set deformation zone (20) of the pressure bushing (15), where the thin wall (21) is deformable into the axially fixed annular channel (18) of the sleeve (12) by an axial upsetting of the pressure bushing (15) into the sleeve (12).

REFERENCES:
patent: 2647000 (1953-07-01), Colley
patent: 4330144 (1982-05-01), Ridenour
patent: 4531768 (1985-07-01), Summers

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