Pipe having an end portion, the inner wall of which is provided

Details Pipe having an end portion, the inner wall of which is provided Pipe having an end portion, the inner wall of which is provided

1979-01-31

1980-10-28

Aegerter, Richard E.

Pipes and tubular conduits

Joined sections

138107, 277207A, 285336, 285345, 285344, F16L 922, F16J 1532, F16L 1900

Patent

active

042301572

ABSTRACT:
A pipe having a sealing member (3) in an inner groove (2) at one pipe end (1). The sealing member provides a very effective seal relative to a spigot end (1a) of another pipe inserted in the pipe in question. The free ends of lip portions (6,7) of a sealing ring (4) (the cross section of which is of V-shape when undeformed) are provided with beads (8) so that behind a stiffening ring (5) surrounding said sealing ring (4) there is more volume of lip material than there is room for in the space confined by the adjacent part of the bottom of the groove (2), the exterior (1a') of said spigot end (1a), the rearmost sidewall (2') of the groove (2) and the stiffening ring (5). The pipe is preferably a plastic pipe.

REFERENCES:
patent: 1969789 (1934-08-01), Finkey
patent: 2314386 (1943-03-01), Brend
patent: 3018785 (1962-01-01), Adams et al.
patent: 3390890 (1968-07-01), Kurtz
patent: 3510140 (1970-05-01), Hermann
patent: 3973783 (1976-08-01), Skinner et al.
patent: 4114657 (1978-09-01), Langenfeld

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