Abstract: An electrical connector is disclosed. The electrical connector includes a multi-diameter power pin having a proximal portion having a first diameter; an engagement portion having a second diameter smaller than the first diameter; a bearing portion having a third diameter smaller than the second diameter; and a threaded distal portion having a fourth diameter smaller than the third diameter. A receiving block having a multi-diameter through hole is configured to receive the multi-diameter power pin. The receiving block includes a plurality of gaps extending radially from the multi-diameter through hole to an outer surface of the receiving block, a receiving portion disposed between a lateral surface of the receiving block and a first gap of the plurality of gaps; and a clamping portion disposed between the plurality of gaps.

Abstract: The invention relates to a coupling for power cables, consisting of a plug part and a socket part, said plug part having a basic body comprising a coupling pin on which a locking pin is arranged. The locking pin is movably mounted on the coupling pin so as to be displaceable in the axial direction of the coupling pin. The locking pin is biased to a basic position towards a back end of the coupling pin by a spring force. When the coupling is being locked, the locking pin engages a helical groove of the socket part and, thus, moves towards the front end of the coupling pin. This movement causes the spring device to load.

Abstract: The invention relates to a hand welding torch (10) provided with a switching device (15), wherein the switching device is formed from a switching element and actuators, wherein the switching element is mounted in such a manner that it can move relatively to the actuators, wherein the actuators can be actuated by means of the switching element, and wherein the switching element can be moved in at least two degrees of freedom.