Abstract: A switch including a plug and a socket for use with high intensity currents includes a power circuit and a pilot circuit for maintaining current flowing through the power circuit. The switch also includes an apparatus for controlling the pilot circuit and preventing insertion of the plug into the socket when the at least one socket pilot contact and the at least one plug pilot contacts are in a closed position.

Abstract: A pressure contact is capable of providing an electrical connection between a plug connector-pin and a stationary current-supply contact element placed within the internal chamber of a plug socket. A movable conductive member placed within the socket is adapted to be pushed upwardly by the connector-pin in opposition to a torsional spring located along a path which is parallel to the axis of the stationary contact element. The conductive member then moves clear of an end of the spring and moves upward abruptly, under the action of the torsional spring, until a contact element attached to the end of the movable member is applied against the stationary contact element in order to form an electrical connection.

Abstract: A plug and socket connector comprises resilient contacts which are adapted to be engaged in bayonet fashion. Electrical contact between each input terminal and a corresponding socket connector-pin is established by coupling two contact studs, one contact stud being carried by a conductive arm rigidly attached to a connector pin, the other being attached to an electrical supply lead. When a plug and socket are disengaged, the contact studs being coupled are positioned in different relative angular positions with respect to the axis of the plug socket. The contact studs are placed into a position of angular coincidence by rotating the plug with respect to the socket. At the end of the rotation of the plug, each arm is subjected to an abrupt pivoting movement in which it is displaced toward an oppositely acting contact stud as a result of a release of the energy stored during the rotation.

Abstract: A pressure contact is capable of providing an electrical connection between a plug connector-pin and a stationary current-supply contact means placed within the internal chamber of a plug socket. A movable conductive member placed within the socket is adapted to be thrust rearwardly by the connector-pin in opposition to a first torsional spring located along a path which is parallel to the axis of the contact. The conductive member then moves clear of guide lugs and tilts forward abruptly, under the action of a second torsional spring, until a contact bead attached to the end of the movable member is applied against the stationary contact bead in order to form an electrical connection.