Pipe for conveying solid matter

Details Pipe for conveying solid matter Pipe for conveying solid matter

1989-11-22

1991-09-03

Arola, Dave W.

Pipe joints or couplings

Repair

Removable wear element

285 55, 285112, 285286, 285416, F16L 5518

Patent

active

050446703

ABSTRACT:
A pipe for conveying solid matter, particularly for conveying concrete. The pipe has a cylindrical middle portion and a double-layer welding neck with annular coupling flange at each end of the middle portion. The inner layer is replaceably clamped in the outer layer in a positively locking and frictionally engaging manner. This is accomplished by a roof-like bevel of the inner layer which is engaged by a corresponding inner groove of the outer layer which is of limited elasticity. The inner diameter of the inner layer may be smaller than the inner diameter of the cylindrical middle portion.

REFERENCES:
patent: 4336958 (1982-06-01), Goetzinger
patent: 4659118 (1987-04-01), Schwyter et al.
patent: 4691740 (1987-09-01), Svetlik

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