CLUTCH, IN PARTICULAR FOR ANCHOR RODS CONNECTION Russian patent published in 2016 - IPC E02D5/80 E21B17/42 

FIELD: machine building.

SUBSTANCE: group of inventions relates to clutches to connect links with male thread, to clutch systems, to injection drilling anchors, and to methods of connection of two carrying links. The clutch contains mandrel-type clutch coupling with holes at two opposite sides having female thread for screwing in, at that between both female threads of holes for screwing in on the internal side of the clutch coupling the looking radially inside installation shoulder is formed; at that between the installation shoulder and female threads the appropriate radial recess is made, it borders with runout of the adjacent female thread; at that in both recesses the elastic strained O-ring is installed, and at that in unloaded state of O-rings their outside diameter is larger then internal diameter of the installation shoulder and/or larger or equal to internal diameter of female thread. Engagement has pressure ring, its outside diameter is below or equal to internal diameter of the installation shoulder. O-rings have binding face that passes to abutment to one of both side surfaces of pressure ring in radius interval, that in case of the O-rings orientation concentric to the pressure ring partially crosses the radius interval of the side surfaces of the pressure ring.

EFFECT: assurance of seal reliability, and minimisation of losses of axial impact energy and installation simplification.

57 cl, 6 dwg