Coupling endpiece for a corrugated tube, and a tube fitted...

Details Coupling endpiece for a corrugated tube, and a tube fitted... Coupling endpiece for a corrugated tube, and a tube fitted...

2008-01-29

2008-01-29

Bochna, David (Department: 3679)

Pipe joints or couplings

Nonmetal to metal

Internal member

C285S903000, C285S259000

Reexamination Certificate

active

07322617

ABSTRACT:
The invention provides a coupling endpiece engageable by force in a corrugated end of a corrugated tube having corrugations following one another at a predetermined pitch and possessing a minimum inside diameter and a maximum inside diameter. The endpiece is constituted by a tubular body possessing a first zone provided on the outside with at least two annular barbs of the Christmas-tree type that are spaced apart by a distance corresponding to the pitch of the corrugations of the tube and having a maximum diameter greater than the maximum inside diameter of the tube, the first zone presenting between the barbs a minimum diameter greater than the minimum inside diameter of the tube, and the body has a second zone extending immediately behind the barbs to receive at least one end corrugation of the tube and having an outside diameter less than a diameter of a junction zone between two annular barbs. The invention also provides a corrugated tube fitted with such an endpiece.

REFERENCES:
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patent: 6007110 (1999-12-01), Amatsutsu
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patent: 6685233 (2004-02-01), Park et al.
patent: 100 51 272 (2001-05-01), None
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patent: 2 817 607 (2002-06-01), None
patent: WO 03/071180 (2003-08-01), None

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