Method for making a shaped flexible tube

Details Method for making a shaped flexible tube Method for making a shaped flexible tube

2007-10-10

2011-12-27

Johnson, Christina (Department: 1742)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

C264S339000, C264S347000, C264S313000, C264S299000

Reexamination Certificate

active

08083981

ABSTRACT:
A flexible tube comprises a tubular body made of a curable flexible material, having at least an elbow shape, and made by a double curing, the first on a straight mandrel, and the second on a shaped cylindric core, to provide the tube with a desired configuration.With respect to the conventional art in this field, the invention provides the advantage that the shaped tube made thereby is directly provided, at the end portion thereof, with the required fittings, without the need of performing auxiliary processing steps to clamp the fittings.

REFERENCES:
patent: 4106968 (1978-08-01), Kutnyak et al.
patent: 4804019 (1989-02-01), Kramer, Jr.
patent: 5424015 (1995-06-01), Matsuda et al.

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