This shaft/hub connection is provided in the form of a polygonal connection having at least two axial sections (1, 2, 3, 4, 61, 62).

According to the invention, the joint connection is designed as a detachable, form-fitting plug-in connection.

The connection parts (4A-4D) connect the circular annular part (2) and the rectangular annular part (3).

At each corner of the frame the longitudinal member is connected to the transverse member by means of a form fitting joint and a welding, a pop-rivet or a glue connection, which connection is arranged at a distance from said form fitting joint.

Because of its shape, the first joint is less fracture resistant than the second joint.

The connecting elements are configured as straight joining elements, angular-joining elements or angular pieces.

Each of the connector elements also forms a connection surface (18, 19).

In case of electrodes with peg-shaped cable connections, the aforementioned widening makes a jump back to this cable connection at a right angle.

Said tool fitting (17) of a first type (16) is embodied as a positive fit fitting (18) and another tool fitting (17) of the second type (22) as a multi-jaw clamping chuck (23).

In two dimensions a geometry is calculated of the female connection and the male connection based on the thread form.

The connector forms a swing connection relationship with the rotating seat.

This connection is hermetic, thereby preventing any type of leakage.

The first tool joint (10a) forming a box connection (14a), second tool joint (10) forming a pin connection (14).

A distal swivel fitting (46, 80) provides multiple sealing sites.

The connection assembly further includes a wedge-shaped locking member.