An electrical machine providing a stationary part, a turning part, at least one bearing and an earthing fibre brush. The electrical machine having a conductive sleeve with an annular base made of an electrically conductive material, the annular base being fixed to the turning part or to a turning race of the bearing, and a conductive coating based on chromium nitride covering at least partly a surface of the base (21) so that the free end of the fibres is in sliding contact against the coating based on chromium nitride.

A terminal block assembly for wire connection of a motor, which includes: a terminal block body; one or more bus bar supports which are formed on the terminal block body; one or more bus bar bodies which have bent shapes corresponding to outer surfaces of the bus bar supports and are rested on the terminal block body or the bus bar supports; one or more terminal connectors which are formed at one ends of the bus bar bodies and are held in contact with one or more connector terminals; and one or more coil connectors which are formed at the other ends of the bus bar bodies and are connected to one or more coils of a motor.

A transport system, in particular a multi-carrier system, includes a plurality of linear motors, which are arranged in a row and form a guide track, and at least one transport element that can be moved along the guide track with the linear motors. The linear motors each have at least a first connection region, which faces and is associated with a linear motor disposed upstream along the guide track, and a second connection region, which faces and is associated with a linear motor disposed downstream along the guide track, wherein a respective plug connector mechanically connects the first connection region of a linear motor disposed downstream along the guide track and the second connection region of a linear motor disposed upstream along the guide track to one another and establishes a power connection and/or a signal connection between the neighboring linear motors.

Systems and methods to mitigate electrical voltage on a rotating plate are disclosed. An example grounding pen brush includes two or more bundles of conductive filaments that are separated from the others by a threshold distance,

An electrical plug includes a pair of electrical energy transmission contacts that are separate from one another, a plurality of signal transmission contacts that are separate from one another, and at least eight data transmission contacts that are separate from one another. An arrangement of the electrical energy transmission contacts, the signal transmission contacts, and the data transmission contacts forms a pin arrangement of the electrical plug.

A motor-driven compressor and a housing for the motor-driven compressor are provided. A power line connector and a communication line connector are arranged on an external surface of a housing. A first terminal of an interlocking communication line is located in the power line connector. A second terminal of the interlocking communication line is located in the communication line connector. The interlocking communication line is routed on the external surface from the first terminal to the second terminal.

An electric compressor is provided in which the connection strength between lead terminals from a motor and an inverter circuit section is improved. The electric compressor 1 is constituted by electrically connecting lead terminals 24 to 26 of a motor and an inverter circuit section 3 for supplying power to the motor by a motor side connection terminal 28. The inverter circuit section 3 is protrusively provided with terminal connection portions 19 to 21 each having a screw groove portion. The motor side connection terminal 28 has a flat plate terminal portion. The flat plate terminal portion is fixed to the inverter circuit section 3 by a nut 91 screwed into each of the screw groove portions of the terminal connection portions 19 to 21 and electrically connected to the inverter circuit section 3 in that state.

A contact includes a hollow box-shaped main body portion into which a plate-shaped counterpart contact is inserted in an insertion direction. A pair of inward slantwise elastic piece portions are provided in a manner extending in the insertion direction from a pair of opposed edge portions of the insertion opening of the main body portion into the main body portion. The pair of elastic piece portions have contact portions arranged in mutually proximal portions. A pair of restricting portions provided on the main body portion are arranged to restrict the amount of deformation of the pair of elastic piece portions when the counterpart contact is inserted. (Selected figure: FIG. 6)

A motor control system providing at least seventeen speed settings using industry standard control signals and an industry standard five pin speed connector. One speed monitoring pin transmits an output signal for monitoring the speed of the motor, and four speed setting pins receive input signals for setting the speed. One of the speed setting pins receives and decodes two binary states and two frequency states, thereby providing a total of thirty-two speed settings. A non-regulated isolated winding is added to an internal transformer to provide an internal isolated flyback power supply for the motor, thereby liberating a pin on the industry standard five pin speed connector to provide the fourth speed setting input pin. Transmission circuitry is associated with the speed monitoring pin, and the non-regulated isolated winding is used to provide a direct current bias to the transmission circuitry.

An electric plug-in device, which is suitable for plugging into an electric receiving device, has an inner conductor and an insulating body which encloses the inner conductor. The plug-in device has: a main element, which can be fixed indirectly, in particular with the involvement of a housing wall, or directly to the receiving device and which encloses the inner conductor and insulating body; a pusher element, which can be displaced relative to the main element; and a spring device, which, after the plug-in device has been plugged into the receiving device, exerts an axial spring force on the pusher element in the direction towards the receiving device.