A terminal member assembly 1 has ground terminals (10A, 10B) each including a main body (20) in the form of a flat plate. A coupling (30) extends from the main body (20) and a wire connecting portion (40) is connected to an extending end of the coupling (30). The ground terminals (10A, 10B) are assembled with each other with the main bodies (20) overlapping each other. At least one (10A) of the ground terminals includes an overlap area (30A) to be overlapped with the coupling (30) of the other ground terminal (10B). The overlap area is located on a surface of the coupling (30) facing the adjacent other ground terminal (10B). A contact portion (36) is located in the overlap area (30A) and projects toward the coupling (30) of the other ground terminal (10B) and is configured to contact the coupling (30) of the other ground terminal (10B).

A system can include a key cartridge, which can include a housing, an enabling key component, and an electrical connector. The housing may be sized for placement at least partially over or around a latch release mechanism of a slidable rack sled and in a position to obstruct access to the latch release mechanism. The enabling key component can be positioned within the housing and enable operation of an electrical component situated within the slidable rack sled. The electrical connector can be coupled with the enabling key component and sized and positioned for establishing electrical connection between the enabling key component and the electrical component situated within the slidable rack sled when the pluggable key cartridge is installed relative to the server rack sled.

A system can include a key cartridge, which can include a housing, an enabling key component, and an electrical connector. The housing may be sized for placement at least partially over or around a latch release mechanism of a slidable rack sled and in a position to obstruct access to the latch release mechanism. The enabling key component can be positioned within the housing and enable operation of an electrical component situated within the slidable rack sled. The electrical connector can be coupled with the enabling key component and sized and positioned for establishing electrical connection between the enabling key component and the electrical component situated within the slidable rack sled when the pluggable key cartridge is installed relative to the server rack sled.

In order to solve the problem, in the case of a trailer coupling comprising a ball neck supporting a coupling ball, and also comprising a socket receptacle for a socket for the power supply of units acting on the coupling ball, the socket having a socket housing with a housing sleeve, which is provided with an insertion opening, and the insertion opening being closable by a cover that is mounted pivotably on the housing sleeve, of being able to mount the sockets as conveniently and easily as possible, it is proposed that the socket receptacle has a receiving channel, into which the housing sleeve extends starting from a first side of the socket receptacle, that the housing sleeve bears against the first side of the socket receptacle via a bearing surface, and that the housing sleeve is fixed to the socket receptacle by a retaining element, which is fitted starting from a second side of the socket receptacle and which is supported on the socket receptacle and is connected to the housing sleeve by a latched connection.

In order to solve the problem, in the case of a trailer coupling comprising a ball neck supporting a coupling ball, and also comprising a socket receptacle for a socket for the power supply of units acting on the coupling ball, the socket having a socket housing with a housing sleeve, which is provided with an insertion opening, and the insertion opening being closable by a cover that is mounted pivotably on the housing sleeve, of being able to mount the sockets as conveniently and easily as possible, it is proposed that the socket receptacle has a receiving channel, into which the housing sleeve extends starting from a first side of the socket receptacle, that the housing sleeve bears against the first side of the socket receptacle via a bearing surface, and that the housing sleeve is fixed to the socket receptacle by a retaining element, which is fitted starting from a second side of the socket receptacle and which is supported on the socket receptacle and is connected to the housing sleeve by a latched connection.

A bio-signal measurement apparatus comprises tool-less connectors, coupling targets, a controllable coupling selection arrangement, and a control arrangement. The tool-less connectors are for an electric contact with a separate docking apparatus or an electrode arrangement. The coupling targets include a battery and a data communication unit that performs electrically a plug-and-play data transfer with the separate docking apparatus. The tool-less connectors, the number of which is three, are electrically coupled with the controllable coupling selection arrangement, which electrically couples all the tool-less connectors with only one of the coupling targets at a time in response to control from the control arrangement. The battery receives electricity from the tool-less connectors for charging the battery through the electric coupling caused by the coupling selection arrangement under control of the control arrangement during a first time window when the bio-signal measurement apparatus is connected with the docking apparatus. The data communication unit sends and/or receives data through the tool-less connectors using the plug-and-play data transfer based on the electric coupling caused by the coupling selection arrangement under control of the control arrangement during a second time window when the bio-signal measurement apparatus is connected with the docking apparatus.

A bio-signal measurement apparatus comprises tool-less connectors, coupling targets, a controllable coupling selection arrangement, and a control arrangement. The tool-less connectors are for an electric contact with a separate docking apparatus or an electrode arrangement. The coupling targets include a battery and a data communication unit that performs electrically a plug-and-play data transfer with the separate docking apparatus. The tool-less connectors, the number of which is three, are electrically coupled with the controllable coupling selection arrangement, which electrically couples all the tool-less connectors with only one of the coupling targets at a time in response to control from the control arrangement. The battery receives electricity from the tool-less connectors for charging the battery through the electric coupling caused by the coupling selection arrangement under control of the control arrangement during a first time window when the bio-signal measurement apparatus is connected with the docking apparatus. The data communication unit sends and/or receives data through the tool-less connectors using the plug-and-play data transfer based on the electric coupling caused by the coupling selection arrangement under control of the control arrangement during a second time window when the bio-signal measurement apparatus is connected with the docking apparatus.

Disclosed illustrative embodiments include docking stations, portable electrical vehicle supply equipment cables, and modular electrical vehicle supply equipment systems. An illustrative docking station includes a receiver configured to be physically couplable with a structure and a source electrical connector configured to be electrically couplable to a power source and the receiver. The docking station also includes an electrical connector configured to be electrically couplable with a portable electrical vehicle supply equipment cable and the receiver. The docking station further includes a communications device couplable in data communication with the receiver and configured to send and receive information relating to use of the electrical connector.

Disclosed illustrative embodiments include docking stations, portable electrical vehicle supply equipment cables, and modular electrical vehicle supply equipment systems. An illustrative docking station includes a receiver configured to be physically couplable with a structure and a source electrical connector configured to be electrically couplable to a power source and the receiver. The docking station also includes an electrical connector configured to be electrically couplable with a portable electrical vehicle supply equipment cable and the receiver. The docking station further includes a communications device couplable in data communication with the receiver and configured to send and receive information relating to use of the electrical connector.

An electrical connector includes an insulating housing. The insulating housing has an inner wall, a first end, and a second end. The inner wall of the insulating housing defines a cavity and a groove, the groove including a groove wall, the groove wall extending from the cavity radially into the insulating housing to a groove depth. The electrical connector also includes an electrical component in the cavity; an electrically conductive shell at an outer surface of the insulating housing; and a plug in the housing, the plug including a body and projection that radially extends from the body, the projection being received in the groove, where the groove wall applies more than 35 pounds (lbs) of force on the plug in a direction that is toward the electrical component.