The invention relates to a power lead for a swimming pool cleaning robot. Said power lead comprises a rotary connector and a buoyancy means supporting said rotary connector. An upper part of said buoyancy means is a cap shaped to slide under a swimming pool cover, under the effect of a traction exerted by the swimming pool cleaning robot on the buoyancy means through the power lead.

An expandable, mobile structure is capable of sustaining a retracted state and an expanded state, and may be capable of alternately using public utilities as a power supply, or a self-contained off-grid power supply. This allows for use of the mobile structure in a multitude of locations, which are not governed by the presence or absence of an available external power supply. The structure may operate in an on-grid power mode when in an expanded condition, and in an off-grid mode in a retracted condition. The structure includes a different number of zones within the structure in the retracted state as compared to the expanded state. A modular HVAC system provides a different flow path of air in the retracted state and the expanded state.

A fan device includes two magnetic members, a fan and a wire. The fan is disposed between the magnetic members, and includes a rotatable hub and a plurality of fan blades radiating from the hub. The wire is mounted on the fan, and has two electrode ends and a plurality of induction portions that are disposed between the electrode ends. Each induction portion is coupled to a respective fan blade, and is co-rotatable with the respective fan blade to intersect a magnetic field between the magnetic members to thereby generate an induced current that flows toward the electrode ends of the wire.

A power supply system that is superior to existing systems. The power supply system supplies, via a shaft that is supported by a first bearing and a second bearing, power to a prescribed load from an alternating current power source, the power supply system making it possible to transmit power mutually between a body and an outer conductor of a rotating shaft via a first coupling capacitor that is composed of a sliding bearing outer ring and sliding interface of the first bearing, and the outer conductor of the rotating shaft, and also making it possible to transmit power mutually between a connecting conductive wire and an inner conductor of the rotating shaft via a second coupling capacitor that is composed of the sliding bearing outer ring, sliding interface, and sliding bearing inner ring of the second bearing.

A shunt assembly for a bearing configuration is disclosed herein. The shunt assembly includes a mesh layer that provides electric contact between a first and second conductive component. The mesh layer can be secured against one of the conductive components via application of a preload, which can be achieved by a spring, O-ring, or other element.

An anti-erosion structure of a motor includes a housing configured to accommodate a stator, a rotor disposed inside the stator, and a shaft disposed inside the rotor; a rear cover coupled to a rear side of the housing; and a ground structure configured to ground the shaft. The ground structure includes a ground bearing installed on the shaft, and a conductor bar having one side fixed to the rear cover and another side contacting the ground bearing.

A rolling bearing, in particular a ball bearing, in particular for use in a surgical instrument, which is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the rolling bearing. A sleeve, in particular for use in a surgical instrument, is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the sleeve. A surgical instrument, in particular a hand-held milling cutter, includes at least one ball bearing and at least one sleeve, each having a respective method of production.

An electrical cable for the connection of two electric/electronic devices, in particular road vehicles, is defined by at least one electrical conductor inserted in a protective sheath made of an insulating material having two sheath portions, which define, together with the segments of electrical conductor associated thereto, relative segments of electrical cable, and are separated from one another so as to enable the two segments of electrical cable to rotate with one another about a longitudinal axis of the electrical cable.

An electronics unit and a plug-in junction box for plug-in connection of a plug-in connector integrated therein in the plug-in direction (S) into a plug-compatible socket of an electronics housing of an electronics unit of an electric motor. The junction box has a housing with a pot-like accommodation region delimited by housing walls for accommodating a contact carrier of the plug-in connector. A plurality of hollow-cylindrical screw bushings extending in the plug-in direction (S) are provided in the accommodation region. At a plurality of positions corresponding to those positions of the screw bushings, the contact carrier has externally located guide elements at which the contact carrier can be guided into its final assembly position, and in the final assembly position, the respective guide elements at least partially engage around the cylindrical screw bushings.

An example welding-type system includes a wire feeder for providing electrode wire to a welding torch comprising one or more drive rolls configured to retract or advance the electrode wire; a rotating power connector comprising an outer portion with a hollow bore; and an inner sleeve within the hollow bore, wherein the inner sleeve is configured to receive a power pin of the welding torch in alignment with the one or more drive rolls, conduct electrical power to the power pin, and permit the power pin to rotate with respect to the outer portion, wherein the outer portion is fixed within the wire feeder.