Patent ID: 7883119
Filing Date: 2011-02-08
Classification: F16L

Abstract:
1. A tight and locked assembly comprising: a spigot of a first piping element, which comprises an outer cylindrical surface, a socket end of a second piping element, and a composite seal for a tight and locked assembly between the spigot and the socket end, the socket end comprising an anchoring groove which is delimited by a cylindrical bottom surface, extending radially outward from a centre line of the assembly, and an annular frontal surface, the seal comprising: a ring made of resilient material extending around the centre line, having a body, compressed radially between the socket end and the spigot, and having an anchoring heel accommodated in the anchoring groove, and a plurality of locking inserts made of a rigid material at least partly embedded in the anchoring heel, each locking insert comprising a radially external head, embedded at least partly in the anchoring heel and designed to be placed in the anchoring groove and also a radially internal foot, designed to be placed against the spigot, the head comprising a first radial projection, adapted to be placed against the cylindrical bottom surface of the anchoring groove, and first and second frontal projections, the second frontal projection being radially offset from the first frontal projection, wherein the annular frontal surface is connected directly to the cylindrical bottom surface such that the outer cylindrical surface and the cylindrical bottom surface define a play, the play being between a minimal play J wherein the first frontal projection is placed against the annular frontal surface at the minimal play J