Quick joint for rapid, tight-seal connection of pipes, particularly suitable for petroleum pipes

A joint for rapid, tight-seal connection of pipes, comprising a female hollow body to be butt-fastened onto a pipe, a male hollow body to be butt-fastened to a second pipe and cooperating with said female body, and a sleeve suitable for being externally screwed down onto a thread provided on said female hollow body, wherein said female hollow body includes an internal shoulder and said male hollow body is provided with an externally overhanging shoulder integral with said male hollow body, wherein said shoulder of said male hollow body cooperates, on a first side with said sleeve such that said sleeve is urged against said first side when said sleeve is screwed onto the thread of the female hollow body and, on a second side, with an end of said female hollow body, said female hollow body including a first decreasing cross-section flaring which extends to said end of said female hollow body, wherein said first decreasing cross-section flaring of said female hollow body comes into an interference engagement with a corresponding external counter-flaring provided on said male hollow body in at least a portion of a region adjacent said overhanging shoulder, said male hollow body including a second decreasing cross-section flaring, wherein said second decreasing cross-section flaring of said male hollow body comes into an interference engagement with a corresponding counter-flaring provided inside the interior of said female hollow body in at least a portion of a region adjacent said internal shoulder of said female hollow body, wherein said male hollow body and said female hollow body are urged toward one another when said sleeve is screwed onto the thread of the female body and said sleeve is urged against said first side of said shoulder of said male hollow body to thereby ensure tight seals at said interference engagements.