Pipe joints or couplings – Packed – Wedge
Patent
1975-01-31
1976-10-19
Arola, Dave W.
Pipe joints or couplings
Packed
Wedge
2853827, F16L 1702
Patent
active
039867366
ABSTRACT:
A pipe joint assembly comprising, in combination, a pipe to be coupled having at a predetermined outer position spaced from its end a rolled circular groove of a preselected depth, said groove having a semicircular cross-section, a sleeve and a fastener mounted on said pipe, a seamless circular packing disposed in said groove, said packing having a circular cross-section, said sleeve having a rear end face of a given circular width which is adapted to make face-to-face contact with said packing, a body having a tapered inner surface, the diameter of which decreases in the rearward direction, said body receiving the end portion of the pipe, the forward or entrance diameter of said tapered inner surface being slightly larger than the outer diameter of said sleeve, said body and said fastener provided with means for connecting with each other, whereby, when said fastener is fastened on said body, said sleeve is reduced by the tapered inner surface of said body to securely contact said pipe and the rear end face of the sleeve simultaneously presses against said packing toward the interior part of the tapered inner surface so that said packing is deformed to a certain extent irrespective of the outer diameter tolerance of the pipe to make a tight contact with said groove, to make a tight contact with the tapered inner surface and to make a tight contact with the sleeve rear end face, respectively.
REFERENCES:
patent: 2691536 (1954-10-01), Tomminga
patent: 3708186 (1973-01-01), Takagi et al.
patent: 3809413 (1974-05-01), Boisserond
Takagi Tatsuya
Takagi Teruya
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