CONDUIT COUPLING Russian patent published in 2009 - IPC F16L21/00 

FIELD: machine building.

SUBSTANCE: invention relates to conduit coupling made up of sleeve and male element inserted axially into the sleeve. The proposed coupling comprises a jointing area to make a joint required for combined rotation between the sleeve and the said male element and an area of axial locking of the male element in the sleeve. The said axial locking is provided by two appropriate annular grooves wherein at least one clamping element can be passed through the inlet opening to make a joint with a stiff clamping. To lock clamping element over the inner annular groove, multiple radial grooves are arranged to receive the locking pins.

EFFECT: higher reliability of joint.

7 cl, 4 dwg