Pipe section, preferably a concrete pipe section

Details Pipe section, preferably a concrete pipe section Pipe section, preferably a concrete pipe section

1979-09-05

1981-09-08

Arola, Dave W.

Pipe joints or couplings

With casing, lining or protector

285291, F16L 5500

Patent

active

042881048

ABSTRACT:
The invention relates to a pipe section of the type which is manufactured by means of molding and which is provided with sealing surfaces for sealingly connecting the pipe with another pipe section. An annular sealing ring is connected to the pipe near one end thereof having an inwardly projecting portion and a further portion located axially inward of the first mentioned portion relative to the end of the pipe. The sealing ring has an inwardly facing pocket and a protector for the surfaces thereof comprising an annular element in contact with the pipe which is easily removable from the pipe at the place where the pipe is to be used. The pipe is molded against the annular element during manufacturing thereof.

REFERENCES:
patent: 2368610 (1945-01-01), Fischer
patent: 2770476 (1956-11-01), Cleverly
patent: 3334925 (1967-08-01), Jayne
patent: 3866925 (1975-02-01), Maimstrom et al.
patent: 3915460 (1975-10-01), Kramer
patent: 4022205 (1977-05-01), Tenczar

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