A corona shielding system for an electric machine, for example a high-voltage machine, such as a generator, for generating electrical energy, an electric motor or else other electric operating means having a relatively high rated voltage, such as transformers, bushings, cables, etc, is disclosed. The corona shielding system may include a filler mixture including both planar and spherical particles. Therefore, the electrical conductivity, which is good in the presence of only planar particles in two spatial directions but is very poor in the third, can be adjusted anisotropically in a targeted manner.

A method for producing a housing having shielding against electric and/or magnetic radiation is provided, in which an electrically and/or magnetically conductive foil is formed into a shape corresponding to and inner or an outer wall of a housing made of an electrically and/or magnetically non-conductive material, and the foil is arranged on the inner or outer wall of the housing. The foil shape may be formed separate from the foils application to the inner or outer wall of the housing, or may be shaped in conjunction with the forming of the non-conductive housing.

A shield is provided, including a frame and a cover. The frame includes a plurality of frame side walls and a frame top structure. Each frame side wall includes at least one frame side wall wedge. The frame side walls are connected to the frame top structure, and the frame top structure includes at least one cantilever beam. The cover includes a plurality of cover side walls and a cover top structure. Each cover side wall includes at least one cover side wall opening. The frame side wall wedge is adapted to be wedged into the cover side wall opening to restrict the movement of the cover in a first direction. The cover side walls are connected to the cover top structure. The cover top structure includes at least one cover top opening. The cantilever beam is wedged into and abuts the cover top opening.

Provided is an electromagnetic shielding material having improved electromagnetic shielding properties, light weight properties and formability. The present invention relates to an electromagnetic shielding material having a structure in which at least three metal foils are laminated via insulating layers, wherein all of combinations of the metal foils and the insulating layers making up the electromagnetic shielding material satisfy the equation: .sub.Md.sub.Md.sub.R310.sup.3, in which: the symbol .sub.M represents conductivity of each metal foil at 20 C. (S/m); the symbol d.sub.M represents the thickness of each metal foil (m); and the symbol d.sub.R represents the thickness of each insulating layer (m).

An apparatus for transmitting electrical signals is disclosed. The apparatus includes a substrate and a twisted pair of conductors located on the substrate. The twisted pair of conductors has a first layer comprising conductive material, a second layer comprising nonconductive material, and a third player comprising conductive material. The first layer has a plurality of segments separated by a plurality of gaps. The second layer is positioned in said gaps and electrically insulates a portion of the segments positioned within the gaps. The third layer is positioned over the second layer. The third layer is configured to electrically connects an end of one segment to an end of another segment. The twisted pair of conductors formed by the three dimensional structure comprises two electrically isolated conductors twisted about each other.

A protective housing for shielding an individual against electro-magnetic field (EMF) radiation includes a conductive mesh configured to be suspended from an elevated position, a conductive plane at a base of the protective housing and configured to be a grounding plane for the protective housing, the conductive plane and conductive mesh being configured to shield an interior space, defined by the conductive plane and conductive mesh when suspended, against EMF radiation, and a cable coupled to a circumference of the conductive mesh and configured to weigh down the conductive mesh and to electrically couple the conductive mesh to the conductive plane.

A shield structure includes a shield bracket, a shield cover, and a shield layer. The shield cover is formed with openings. The shield layer is spliced with the shield cover through a conductive tape layer and covers all openings. The shield cover is formed with openings and a light shield layer is spliced with the shield cover and covers the openings, greatly reducing the weight of the shield cover while ensuring the shielding effect, without compressing space for other elements. The shield layer is thin, capable of lowering down the shield, dissipating heat effectively, reducing the temperature of the whole machine and providing a good environment for the operation of the whole machine, without affecting the shielding effect; and the conductive tape layer is spliced with the shield layer, thus allowing multiple assembling without damaging the whole structure, and facilitating subsequent repair.

A connecting end portion of a shield pipe with respect to a shield member is waterproofed. A shield conduction path includes: a shield pipe having a connecting end portion opened obliquely downward; a braided wire fasten to an outer periphery of the portion by a swaging ring; a plurality of wires inserted into the pipe and braided wire; a rubber shield grommet and surrounding a fastening region between the braided wire and swaging ring; a binding band that fixes an upper end portion of the grommet to an outer periphery of the pipe in a liquid tight manner; a tube formed of synthetic resin surrounding the braided wire and having an upper end portion surrounding a lower end of the grommet; and exterior adhesive tape wound in a liquid tight manner from an outer periphery of the upper end portion of the tube over an outer periphery of the grommet.

Smartcards having (i) a metal card body (MCB) with a slit (S) overlapping a module antenna (MA) of a chip module (TCM) or (ii) multiple metal layers (M1, M2, M3) each having a slit (S1, S2, S3) offset or oriented differently than each other. A front metal layer may be continuous (no slit), and may be shielded from underlying metal layers by a shielding layer (SL). Metal backing inserts (MBI) reinforcing the slit(s) may also have a slit (S2) overlapping the module antenna. Diamond like coating filling the slit. Key fobs similarly fabricated. Plastic-Metal-Plastic smart cards and methods of manufacture are disclosed. Such cards may be contactless only, contact only, or may be dual-interface (contact and contactless) cards.

Provided is an electromagnetic shielding material having improved electromagnetic shielding properties. The present invention relates to an electromagnetic shielding material having a structure in which at least two metal foils are laminated via at least one insulating layer, the electromagnetic shielding material comprising at least one metal oxide layer on at least one boundary surface over which each metal foil is in contact with the insulating layer, the metal oxide layer having a thickness of from 1 to 30 nm.