'A coupling device for coupling a tubular outer part with an inner portion'.

摘要

A coupling device for coupling a tubular outer part with an inner part, which can be introduced into the outer part, in an arbitrary position relative to each other, wherein the coupling device comprises a coupling union surrounds the bottom and is arranged becomes slidable thereon, it is coupled to the outer part at least upon the occurrence of axial movement thereof and comprises flexible elements which are inclined relative to the axial direction of the union and are interconnected such that an axial extension of the coupling union results in a reduction of the circumference of the coupling union in a plane perpendicular to the axis of the binding and therefore the binding to grip the inner part, with the coupling connection axially compressible by means of the release element, which results in an increase in the circum ference of the coupling union and thus the binding release coupling inside.