초록 ▼

A joint assembly for plastic tubes including an annular caulking element having a substantially triangular cross section, opposite annular ends thereof being adapted to be caulked into the outer peripheral surface of a plastic tube to be connected by the wedging action applied by a fastening structu

A joint assembly for plastic tubes including an annular caulking element having a substantially triangular cross section, opposite annular ends thereof being adapted to be caulked into the outer peripheral surface of a plastic tube to be connected by the wedging action applied by a fastening structure, said caulking element being composed of two annular members arranged to be axially compressible toward each other while defining an annular groove therebetween, and an annular elastic sealing member being disposed in said groove and being adapted to be bulged out, radially inwardly to be pressed against the outer surface of said plastic tube under said axial compression of said two annular members.

대표청구항 ▼

A joint assembly for plastic tubes comprising a sleeve inserted into an end portion of a plastic tube for supporting the inner peripheral surface of said end portion, an annular caulking element having a substantially triangular cross section as a whole and composed of two annular members, each havi

A joint assembly for plastic tubes comprising a sleeve inserted into an end portion of a plastic tube for supporting the inner peripheral surface of said end portion, an annular caulking element having a substantially triangular cross section as a whole and composed of two annular members, each having a tapered outer surface, said annular caulking members being adapted to be mounted around said end portion, a body member having an annular seal for receiving a tapered outer peripheral surface of one of said annular members, and a cap nut having an annular seal for receiving the tapered outer surface of another of said annular members and adapted to be screwed onto said body member, said annular members cooperating with each other to define an annular groove of substantially rectangular cross section and an annular elastic sealing element of substantially circular cross section disposed in said groove, said two annular members being engagable with each other for reducing the width of said groove to a size smaller than the normal width of said annular elastic sealing element, the height of said annular groove being substantially the same as the normal height of said annular elastic sealing element.