Ductile cast iron pipe having constricted end casing

Details Ductile cast iron pipe having constricted end casing Ductile cast iron pipe having constricted end casing

1982-02-12

1984-03-13

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

164302, 164 761, 164114, 72367, B22D 11126

Patent

active

044358946

ABSTRACT:
The invention provides a pipe or similar tubular member of ductile cast iron having an end casing. The thin walled casing has a curved profile at its entrance divided into two sections, of which one is formed by centrifugal casting, whereas the other, of lesser curvature, is made by hot or cold forming with a simultaneous axial compression and a radial bending directed towards the axis of the pipe. The invention is useful for forming fluid tight seals in pipelines using radial compression packings.

REFERENCES:
patent: 2245421 (1941-06-01), von Frankenberg
patent: 2410813 (1946-11-01), Dillon
patent: 2857666 (1958-10-01), Beyer
patent: 3977227 (1976-08-01), Noble

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