Pipe joint construction

Details Pipe joint construction Pipe joint construction

1978-03-20

1980-11-18

Callaghan, Thomas F.

Pipe joints or couplings

Connector for conduit housing electromagnetic line:

Underground

285158, 285189, 285286, F16L 1302

Patent

active

042342171

ABSTRACT:
A pipe joint construction comprises a main pipe having a circular section of outer diameter D and one or more branch pipes having a circular section of outer diameter d. The wall thickness To of the main pipe is increased at the interior of the main pipe to a value T at the portion to which branch pipes are welded. The angle .phi. subtended by the portion of increased thickness at the center of the main pipe is determined by the following relationship, that is,

REFERENCES:
patent: 1859259 (1932-05-01), Chamberlain et al.
patent: 1883439 (1932-10-01), Adams
patent: 1889874 (1932-12-01), Obert
patent: 1992960 (1935-03-01), Miller et al.
patent: 2106404 (1938-01-01), Ewing
patent: 2109915 (1938-03-01), Watts
patent: 2496677 (1950-02-01), Reedy
patent: 2763923 (1956-09-01), Webb
patent: 2916308 (1959-12-01), Voldrich et al.
patent: 3891249 (1975-06-01), Moore
patent: 3894757 (1975-07-01), Best
patent: 3934787 (1976-01-01), Fels

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