A charging connector for an electrical vehicle has a connector base, a tubular first conductive terminal mounted in the connector base, an insulating isolation member mounted in the first conductive terminal, and a second conductive terminal mounted in a center of the isolation member and coaxially disposed in and electrically isolated from the first conductive terminal. The isolation member has at least one annular groove recessed in an upper surface of the isolation member, extending downwardly, and coaxially surrounding the second conductive terminal. A creepage distance between the first conductive terminal and the second conductive terminal is increased and a surface area for heat dissipation is increased to meet safety specifications.

A charging connector for an electrical vehicle has a connector base, a tubular first conductive terminal mounted in the connector base, an insulating isolation member mounted in the first conductive terminal, and a second conductive terminal mounted in a center of the isolation member and coaxially disposed in and electrically isolated from the first conductive terminal. The isolation member has at least one annular groove recessed in an upper surface of the isolation member, extending downwardly, and coaxially surrounding the second conductive terminal. A creepage distance between the first conductive terminal and the second conductive terminal is increased and a surface area for heat dissipation is increased to meet safety specifications.

A biocompatible electrical connection includes a substrate; a ferrule having a concentric flange at a first end of the ferrule; a first adhesive; and a second adhesive. The first adhesive adheres a first surface of the concentric flange of the ferrule to a surface of the substrate. The second adhesive fills an annular space between a hole in the substrate and the ferrule. The first adhesive or the second adhesive forms a conductive path on the surface of the substrate between the ferrule and a circuit pattern on the substrate.

A biocompatible electrical connection includes a substrate; a ferrule having a concentric flange at a first end of the ferrule; a first adhesive; and a second adhesive. The first adhesive adheres a first surface of the concentric flange of the ferrule to a surface of the substrate. The second adhesive fills an annular space between a hole in the substrate and the ferrule. The first adhesive or the second adhesive forms a conductive path on the surface of the substrate between the ferrule and a circuit pattern on the substrate.

A telescopic electric conductor includes an electrically conductive first tube having a longitudinal axis and an electrically conductive second tube movable relative to the first tube along the longitudinal axis while being at least partly received within the first tube. An electrically conductive flexible self-supporting element is arranged inside the first tube and is mechanically and electrically connected to the first tube and to the second tube. The flexible element is arranged to elastically deform along the longitudinal axis. The flexible element has a waveform shape with several cycles of the waveform includes a number of sections that are welded together, each section having a shape of a half cycle of the waveform.

A telescopic electric conductor includes an electrically conductive first tube having a longitudinal axis and an electrically conductive second tube movable relative to the first tube along the longitudinal axis while being at least partly received within the first tube. An electrically conductive flexible self-supporting element is arranged inside the first tube and is mechanically and electrically connected to the first tube and to the second tube. The flexible element is arranged to elastically deform along the longitudinal axis. The flexible element has a waveform shape with several cycles of the waveform includes a number of sections that are welded together, each section having a shape of a half cycle of the waveform.

The present disclosure provides a concentric conductor for conducting electrical power from a source to a receiving system or load. The concentric conductor includes one or more conducting tubes interior to an outer tube, extending concentrically around a central axis. The conducting tubes are affixed a head-end interface and a connector assembly at either end of the concentric conductors.

A work machine powered electrically by a conductor rod contacting power rails along a haul route. The conductor rod has a central passageway coupling a head to a tip. A barrel extending from the head and an arm extending from the tip have concentric tubular conductors radially offset from each other and slidably mated together. The concentric tubular connectors maintain physical and electrical contact as the conductor rod extends and contracts so that contact with electrical power is maintained despite lateral movements caused by steering or road conditions.

A connection arrangement includes an expansion ferrule insertable in a slidable manner into a central opening of an electrical contact element and an expansion element inserted into the expansion ferrule. The expansion ferrule is expanded when the expansion element is fully inserted into the expansion ferrule to clamp the electrical contact element and fasten the electrical contact element to an electrical conductor.

A connection arrangement includes an expansion ferrule insertable in a slidable manner into a central opening of an electrical contact element and an expansion element inserted into the expansion ferrule. The expansion ferrule is expanded when the expansion element is fully inserted into the expansion ferrule to clamp the electrical contact element and fasten the electrical contact element to an electrical conductor.