SWIVEL Russian patent published in 1994 - IPC

FIELD: drilling equipment. SUBSTANCE: the swivel has a body accommodating a rotating hollow barrel, cover and feeder that are motionless relative to the body, as well as an outlet pipe connection between the barrel and feeder consisting of a pipe and two packs of sealing collars located in rotating and non-rotating sleeves, antifriction bearing with a cage; the bearing inner race is installed on the rotating sleeve of the outlet pipe connection, the bearing outer race is installed in the non-rotating sleeve, the cage has a cut-out, rigidly fixed on the pipe is a disk carrying at least one dog, the dog is passed through the cut-out in the cage and has a cut in the point of contact with the disk, the disk is made in the form of two half-yokes rigidly enveloping the pipe; the half-yokes have through holes and cuts coming in contact with the cuts on the dogs. EFFECT: facilitated procedure. 4 cl, 4 dwg