PIPE JOINT Russian patent published in 2002 - IPC

FIELD: joints of pipe lines used for transportation of fluid and gaseous media. SUBSTANCE: joint includes two pipes and intermediate locking member; female end part is secured on first pipe and male end part is secured on second pipe. Male end part is provided with bead having taper and cylindrical surfaces connected in the course of assembly with respective surfaces of female end part whose cylindrical surfaces are divided by circular slot from two. Grooves: grove of larger diameter is used for mounting intermediate locking member in form of split spring ring or torus; it is located between concave surface of bead and surface of rounded- off groove. Proposed joint may be used for flangeless connection of cylindrical tubular members. EFFECT: enhanced operational reliability; improved quality of joint; low cost; reduction of time required for performing assembly and dismantling jobs. 8 cl, 2 dwg