Tube for transporting high-viscosity materials

Details Tube for transporting high-viscosity materials Tube for transporting high-viscosity materials

2004-05-14

2011-12-13

Hook, James (Department: 3754)

Pipes and tubular conduits

Combined

With end structure

C138S125000, C138S127000, C138S137000, C138S146000

Reexamination Certificate

active

08074686

ABSTRACT:
Transport pipe for high viscosity materials, in particular for concrete. The transport pipe includes an inner pipe (10) made of an abrasion-resistant plastic, at least one metallic joint element (12), as well as a reinforcing jacket (14) which envelops at least the internal pipe. In order to ensure a reliable and enduring joint between inner pipe and joint element, it is proposed in accordance with the invention, that the radially projecting collar of the joint element is defined by a ring-shaped end face (20) and by a thereto joined ring step (22) extending radially towards the inside of the pipe and recessed axially from the ring-shaped end face, and wherein the plastic material of the inner pipe (10) engages in the ring step (22) from the inside of the pipe.

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