Pipe joints or couplings – Elbow
Patent
1974-05-30
1976-02-03
Arola, Dave W.
Pipe joints or couplings
Elbow
285302, F16L 5500
Patent
active
039360806
ABSTRACT:
A pipeline expansion joint having a smooth bore, for use with pipelines into which flow slurries containing solids in suspension, comprises a first sleeve open at both ends and having a tapered portion formed in the inner wall of one of its ends extending at a small angle with the axis of the first sleeve and over a substantial portion of the length of the first sleeve from its inside diameter to substantially its outside diameter, and a second sleeve also open at both ends and having a first portion of substantially the same inner diameter as the outer diameter of the first sleeve and telescopically mounted on the above-mentioned one end of the first sleeve, a second portion of the same diameter as the first sleeve, and an intermediate portion expanded at a small angle with the axis of the second sleeve over a substantial portion of its length from the second to the first portion of such second sleeve. The above expansion joint has a smooth bore throughout with no area of abrupt changes in order to prevent turbulence and the resulting wear due to the solids in suspension in the slurries.
REFERENCES:
patent: 1013258 (1972-01-01), Wyton
patent: 1810091 (1931-06-01), Siegle
patent: 3353563 (1967-11-01), Hutton
patent: 3427051 (1969-02-01), White et al.
patent: 3645563 (1972-02-01), Rochelle
Arola Dave W.
Grandview Industries Limited
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