Abstract: Disclosed herein is an electromagnetic wave shielding dielectric film. The electromagnetic wave shielding dielectric film includes a lower layer and an upper layer. The lower layer is formed of a dielectric in a plate shape. The upper layer is formed of a dielectric stacked on the lower layer, and is configured to form a periodic pattern of protrusion and depression structures.

Abstract: A cassette comprising at least one portion for engaging with a cooperating locking element of a tape printer when said cassette is correctly located in said printer, said portion comprising an elongate conductive bar extending along said cassette in a direction perpendicular to a rotational axis of a supply roll housed in said cassette.

Abstract: A receptacle assembly includes a hollow conductive cage with a front end and an opening to an interior portion of the cage. The opening is configured to receive a module assembly therein. The cage has a bottom with a bottom opening communicating with the interior portion, and the bottom is configured to be joined to a circuit board. A layered EMI shield member is provided between the bottom of the cage and the circuit board and the shield member extends completely around the bottom opening of the cage. The EMI shield member is formed as a flexible, low-cost assembly that utilizes a pair or insulative layers that flank a conductive layer.

Abstract: An electromagnetic interference (EMI) absorber includes an EMI conductive sheet having first and second portions, the first portion absorbing EMI from an EMI absorption target and the second portion for conducting EMI to an EMI discharge target, and an elastic member covered by the first portion.

Abstract: An assembly configured to protect a circuit board from electromagnetic interference. The assembly includes a metal shield and an enclosure. The metal shield includes a metal plate and a plurality of tangs. The plurality of tangs are spaced about and extend transversely away from at least a portion of a perimeter portion of the metal plate. The enclosure has a bottom wall and at least one sidewall disposed around a perimeter of the bottom wall, the at least one sidewall configured to urge the tangs of the metal shield inward when the metal shield is disposed in the enclosure.

Abstract: Cover for electronic equipment including at least two movable metal panel elements. The panel elements are joined together along their respective edges, so they are joined together and in relation to each other immobile state form the cover. The invention is wherein the cover includes a respective connector for mechanical joining and good electric contacting along each one of the edges along which the panel elements are arranged to be joined together, in that each connector includes a respective resilient metal contacting device, which contacting device is arranged between the respectively joined together panel elements and in direct contact with both panel elements when the panel elements are in the joined together state, and thereby is compressed against the spring force of the contacting device, so that the spring force acts against the surfaces of both the respective joined together panel elements and connects them to each other electrically.

Abstract: An electrical connector assembly includes an electrically conductive cage having a cage end configured for mounting in a panel opening. The cage has a compartment for receiving a pluggable electrical component therein. The cage end has a circumference defined by an exterior surface of the cage. A retention frame extends over the cage end along at least a portion of the circumference. The retention frame includes a gasket side and a rear side. A retention opening extends through the gasket and rear sides of the retention frame. An EMI gasket is mounted on the cage end. The EMI gasket includes a length of electrically conductive cord having opposite cord ends. The cord is wrapped externally around the cage end forming a continuous band that engages the exterior surface of the cage along at least a portion of the circumference. The cord extends along and engages the gasket side of the retention frame and the cord ends extend through the retention opening and along the rear side of the retention frame.

Abstract: A shielding cage (1) partially mounted to an opening (31) defined through a panel (3) for at least an electrical module. The shielding cage has a cage body (13) and a gasket (14) mounted around a front portion of the cage body. The cage body has a number of side walls (100) and a front opening (101) defined between the side walls for receiving the electrical module. The gasket (14) has a base (142) resisting against a side face of the panel, and a horizontal portion (141) extending from the base and into the opening of the panel for firmly abutting against the inner surface of the opening.

Abstract: The present invention relates to a device package, such as an electronic system package, that is suitable for use in harsh military or commercial environments. The package components, including a base enclosure and mating cover, comprise a series of interconnected electrically conductive materials, forming a tortuous electrically conductive path, that advantageously shield electromagnetic interference (“EMI”). The electrically conductive, EMI-shielding layers and other coated layers (e.g., insulative electrocoated paint layers) are smooth layers that provide corrosion resistance to the interior and exterior surfaces of the package. The package is also designed such that its components form a water tight seal. Thus, innovatively, the package comprises a combination of components that synergistically shield electromagnetic interference, resist interior and exterior corrosion, and form a water tight seal. The package is configured to pass military specification EMI and salt fog standard testing.

Abstract: A gasket generally includes upper and lower members and first and second oppositely-disposed lateral members. The first and second oppositely-disposed lateral members connect the lower member to the upper member such that a spaced distance separates the lower member's inner surface from the upper member's inner surface. The first and second lateral members, lower member, and lower member may collectively define a generally trapezoidal profile.

Abstract: A gasketed collar for reducing EMI emission from a communication module is presented. The gasketed collar includes a conductive metal collar designed to fit at least partway around the communication module, and a gasket. The gasket is electrically conductive and compressible. The gasket fits at least partway around the communication module and overlaps the conductive metal collar. A communication module including such gasketed collar and a method of making such communication module are also presented.

Abstract: An electro-conductive contact structure for sealing the interior of an enclosure from interference includes first and second electro-conductive contact surfaces. In one embodiment, the first electro-conductive contact surface includes a plurality of projections, and the second electro-conductive contact surface includes a plurality of slots. The projections are configured for insertion into the slots to form an electro-conductive interface between the first and second portions of the enclosure. In another embodiment, the electro-conductive contact structures are formed on first and second housing parts, respectively. In another embodiment, the electro-conductive contact surfaces each include a series of fingers and a plurality of pockets between the fingers.

Abstract: A seal including a base and a conductor mounted to conduct current from a source disposed on a first side of said base to a sink disposed on a second side of said base. In the illustrative embodiment, the base is annular (ring-shaped) and fabricated of airtight, watertight and/or electrically insulating and/or conductive material such as rubber, Teflon®, silver impregnated Teflon®, or other suitable substance. In the illustrative embodiment, the conductor is a single strip of conductive material and the base has a recess to allow for deflection thereof. In the best mode, plural conductors are mounted within the annular base. Each conductor has a brush at each end thereof. The brushes are provided by a split(s) at the end of each strip effective to create multiple fingertips. Each strip is secured at an angle in a slot in the base and retained further by an anchor. The anchor is integral with the strip and transverse to the longitudinal axis thereof.

Abstract: A gasket is interposed between a circuit board that generates electromagnetic waves and a conductive member, and includes an elastic member separating the circuit board from the conductive member. The gasket is electrically connected with the circuit board by a conductive layer to receive the electromagnetic waves from the circuit board. The conductive layer is covered with an insulating layer except for a contact area where the conductive layer is coupled with the circuit board. The insulating layer blocks the electromagnetic waves received from the circuit board. The electromagnetic wave noise of a display apparatus is reduced even if a contact failure occurs between the gasket and a top chassis.

Abstract: According to various aspects, exemplary embodiments are provided of fabric-over-foam EMI gaskets. In one exemplary embodiment, a fabric-over-foam EMI gasket generally includes a resiliently compressible foam core and an outer electrically-conductive fabric layer. At least one slit extends generally transversely across an upper surface portion of a longitudinally extending region of the gasket.

Abstract: A shielding apparatus for electromagnetic testing includes a platform, a lid forming a cavity, a driving unit, and an elastic gasket attached to a bottom of the lid around a rim adjacent the cavity. The platform is for placing an electronic device to be tested. The lid is for covering the platform to define a closed space. The driving unit is for lifting and lowering the lid. The gasket is for being compressed and filling gaps between the lid and the platform when the platform covers the lid.

Abstract: An apparatus is provided comprising a chassis of a sheet of an electrically conductive material having a substantially non-conductive coating. An exposed portion of the chassis can be deformed to provide at least one protrusion such that the non-conductive coating on the at least one protrusion is thinner than a portion of the sheet spaced apart from the at least one protrusion to provide a conductivity path through the sheet.

Abstract: A gasket and gasket system for diminishing electromagnetic radiation from an enclosure having two edges remote from one another. The gasket has tangs on one edge for gripping one enclosure edge, and tangs on the other edge for gripping the other enclosure edge. The gasket system includes the combination of an enclosure member having two edges remote from one another with a two-sided gasket having tangs on one side engaged in gripping one enclosure edge, and tangs on the other edge engaged in gripping the other enclosure edge.

Abstract: An electromagnetic shield comprising an electrically conductive frame for establishing electrical contact between a chassis wall and an expansion card mounting bracket. The frame has a plurality of spring fingers interconnected about a perimeter of a central opening in the frame, wherein each spring finger defines a central axis that extends outwardly away from the central opening. The frame may include a substantially planar portion adjacent the central opening in the frame, wherein the plurality of spring fingers incline along the central axis to extend out of the plane defined by the substantially planar portion. The incline of the spring fingers allows a mounting bracket to slide laterally without jamming against the side of a spring finger during installation, removal or side-to-side shifting of the mounting plate.

Abstract: A method of manufacturing a chassis assembly to reduce electromagnetic interference is disclosed. The method includes forming a chassis having a chassis cover top portion, a chassis cover step portion, a chassis cover pre-step portion, a hemmed edge, a hemmed lip, and one or more dimpled spring fingers, by forming a first bend at the hemmed edge residing between the hemmed lip and the chassis cover pre-step portion, forming a second bend between the chassis cover step portion and the chassis cover pre-step portion, and forming a third bend between the chassis cover top portion and the chassis cover step portion. The method further including forming a fourth bends between a chassis back top portion and a chassis back. The formed chassis cover is then seated with the chassis back to create a tortuous path.

Abstract: According to various aspects, exemplary embodiments are provided of gaskets that can protect fingerprint readers from receiving electrostatic discharge surges when a user's finger is placed in contact with the electronic scanning portion of the fingerprint reader. In exemplary embodiments, a gasket can provide an electrically-insulative barrier between the exposed contact points on the sides of the fingerprint reader, the electrostatic discharge, and the electrically-conductive side of the gasket. The gasket can also include an electrically-conductive side that provides a relatively short path to ground for the electrostatic discharge.

Abstract: An exemplary embodiment of a gasket is configured for providing electromagnetic interference (EMI) shielding and/or grounding of one or more electrical components on a substrate disposed within a passageway of a member having a generally circular cross-section. The gasket may include inner and outer portions that cooperatively define a generally circular annular shape with a generally central opening. The outer portion may be configured to be disposed circumferentially along and in electrical contact with an electrically-conductive surface of the member in a first direction. The inner portion may be configured to be disposed circumferentially along an edge portion of the substrate and in electrical contact with at least one electrically-conductive portion on the substrate in a second direction generally perpendicular to the first direction. Accordingly, the gasket may establish electrical grounding contact from the at least one electrically-conductive portion on the substrate to the member.

Abstract: An electromagnetic shielding gasket is provided, which is capable of reducing the amount of projection from the inner surface of a first opposing wall having gasket holding holes and is less likely to come off through the gasket holding holes in the direction from the inner surface side toward the outer surface side of the first opposing wall. A communication device as an electronic device has a device body having a plural number of sub-casings and electromagnetic shielding gaskets 1. A first opposing wall 102a disposed on the sub-casing of the device body includes a plural number of gasket holding holes 104 and gasket guiding holes. The electromagnetic shielding gasket 1 has a gasket body 2 and a plural number of fitting parts 4 and come-off stopping parts 3. The fitting parts 4 are guided in the gasket guiding holes and then fitted in the gasket holding holes.

Abstract: Enclosures and gasket assemblies for reducing EMI for computer systems and other electronic devices are disclosed. In an exemplary embodiment a gasket assembly for reducing EMI may comprise a soft core sizable to extend along at least the length of an opening in an EMI housing. The gasket assembly may also comprise a plurality of fingers positionable at spaced-apart positions along the entire length of the opening in the EMI housing, the plurality of fingers maintaining conductivity between mating surfaces of the EMI housing.

Abstract: According to various aspects, exemplary embodiments are provided of gaskets that can protect fingerprint readers from receiving electrostatic discharge surges when a user's finger is placed in contact with the electronic scanning portion of the fingerprint reader. In exemplary embodiments, a gasket can provide an electrically-insulative barrier between the exposed contact points on the sides of the fingerprint reader, the electrostatic discharge, and the electrically-conductive side of the gasket. The gasket can also include an electrically-conductive side that provides a relatively short path to ground for the electrostatic discharge.

Abstract: An electromagnetic wave shielding gasket comprising a gasket body integrated with an electroconductive non-woven fabric or woven fabric, a seal part being provided, while avoiding the area of the electroconductive non-woven fabric or woven fabric, where the gasket body, preferably a gasket body with a lip-shaped projection, is integrated at the edge with the electroconductive non-woven fabric or woven fabric, and particularly preferably an annular gasket body with a lip-shaped projection is integrated at the inner peripheral edge with the outer peripheral edge of the annular body of the electroconductive non-woven fabric or woven fabric.

Abstract: An apparatus for providing board level shielding of Electromagnetic Interference in a printed circuit board is disclosed. The apparatus includes a plastic part, a metal conformal coating and a form-in-place Electromagnetic Interference gasket. The plastic part is configured in one or more compartments to provide an enclosure, and is attached to the printed circuit board. The metal conformal coating is applied continuously to one or more surfaces of the plastic part. The form-in-place Electromagnetic Interference gasket is applied on top of the metal conformal coating in an area of a part flange.

Abstract: The present invention relates to a joining structure at a joining portion of a couple of members. A belt type flat surface portion (11) provided to one member (10) and an opposing flat surface portion (21) provided to the other member (20) are joined with each other via a plurality of plate springs (14) allocated along the longitudinal direction of the belt type flat surface portion. Here, a plurality of plate springs are directed diagonally to the longitudinal direction of the belt type flat surface portion. Accordingly, the plate springs can be allocated with higher space efficiency and moreover close contact can be improved and reduction in cost can also be realized.

Abstract: According to various aspects, exemplary embodiments are provided of gaskets that can protect fingerprint readers from receiving electrostatic discharge surges when a user's finger is placed in contact with the electronic scanning portion of the fingerprint reader. In exemplary embodiments, a gasket can provide an electrically-insulative barrier between the exposed contact points on the sides of the fingerprint reader, the electrostatic discharge, and the electrically-conductive side of the gasket. The gasket can also include an electrically-conductive side that provides a relatively short path to ground for the electrostratic discharge.

Abstract: An electromagnetic interference (EMI) gasket for an electronic module comprises a valley feature formed on one side of an EMI gasket and a crown feature formed on the other side of the EMI gasket in order to complement the valley. One or more EMI gaskets are used to construct a shield across the opening of a module cage or rack. Each gasket forms a link in a series of modules, in order to complete a seal across the opening in the cage. A perpendicular pressure forces the module gaskets to center and align evenly as the crown and valley of the opposite features nest together. The modules can be then pressed together and the overlap of the crown and valley acts to center the alignment and create a pressure for satisfactory EMI grounding and the reduction of EMI leakage.

Abstract: A shielding assembly includes a cage (40), a shielding plate (10), and a gasket (50). The cage includes a front end portion (41), a rear end portion (43) opposite to the front end portion, a plurality of clips (45) protruding from the front end portion, a pair of sidewalls (44), and a back wall (46). The shielding plate attached to the front end portion of the cage, includes a main portion (12), a plurality of resilient tabs (14) projecting from an inner surface of the main portion, and a plurality of through hatches (16) in the main portion for receiving the clips. The gasket is attached to the rear end portion and abuts against outer surfaces (49) of the sidewalls and the back wall.

Abstract: The present invention insulates the source of noise efficiently by forming a thick noise insulating portion to the cover to tightly seal a drive unit which generates heat and noise and at the same time, increases the cooling effect of cooling fins by making the surface areas of the cooling fin ends that are away from the noise insulating portion wide by the amount equivalent to the surface area of the cooling fins decreased by the noise insulating portion provided, and obtains the shielding cover that is excellent in both cooling and noise insulation.

Abstract: An electromagnetic interference (EMI) gasket for an electronic module comprises a valley feature formed on one side of an EMI gasket and a crown feature formed on the other side of the EMI gasket in order to complement the valley. One or more EMI gaskets are used to construct a shield across the opening of a module cage or rack. Each gasket forms a link in a series of modules, in order to complete a seal across the opening in the cage. A perpendicular pressure forces the module gaskets to center and align evenly as the crown and valley of the opposite features nest together. The modules can be then pressed together and the overlap of the crown and valley acts to center the alignment and create a pressure for satisfactory EMI grounding and the reduction of EMI leakage.

Abstract: A shield frame (800) is provided that allows for narrow width tracks to be used in a radio frequency (RF) shielding apparatus (900). The shield frame (800) is formed of a sheet metal frame (700) overmolded with a conductive elastomer (802) to form narrow edges (808, 810) that provide compliance in a +/?z-axis (814) directions while thicker portions of the overmolded conductive elastomer prevent buckling of the elastomer. The shield frame (800) can be sandwiched between two substrates (902, 908) of a communication device (900) having components (904) requiring RF shielding. Narrowing of the conductive elastomer overmold (802) allows ground tracks/runners (906) to be used on a substrate (902) which are narrower in width (912) than the shield frame width (702) thereby providing increased area for component placement.

Abstract: A cable arranging structure for exchanging electric signals between a pair of printed circuit boards includes at least a pair of electrically conductive members adapted to arrange the cable between them over the entire length thereof. The electrically conductive members show an electric potential substantially equal to that of the ground. Such a structure requires only the two electrically conductive members to be rigidly secured so that radiant noises generated by the cable can be effectively suppressed by means of the structure without the need of deforming the cable.

Abstract: a chassis assembly that reduces the amount of electromagnetic radiation entering or leaving the interior of the chassis assembly. The chassis assembly includes a chassis cover and chassis back. The chassis cover includes a plurality of dimpled spring contacts and hemmed edges and hemmed lips. The chassis back includes a chassis back top portion adapted to mate with the chassis cover, such that the chassis back top portion is in good contact with the one or more dimpled spring contacts, providing good electrical conductivity. Further, the chassis assembly is designed such that the mating between the chassis cover and chassis back provides a tortuous path to any electromagnetic radiation disposed to enter or leave the chassis assembly.

Abstract: Disclosed are methods and apparatus for improving the resiliency and airflow through a honeycomb air vent filter while providing EMI shielding. In one embodiment, the honeycomb can be manufactured from a dielectric (e.g., plastic) substrate to provide improved resistance to deformation as compared to conventional aluminum honeycomb. The dielectric honeycomb substrate is metallized to provide EMI shielding capability. The metallized honeycomb substrate is cut slightly oversize to fit an opening in an electronic enclosure, which results in elastic deformation of resilient perimeter spring fingers that are used to hold the metallized dielectric honeycomb in place and provide electrical conductivity between the metallized dielectric substrate and the enclosure, thereby eliminating the use of a frame. In another embodiment, additional conductive layers can be added to the metallized dielectric honeycomb.

Abstract: Disclosed are methods and apparatus for improving the resiliency and airflow through a honeycomb air vent filter while providing EMI shielding. In one embodiment, the honeycomb can be manufactured from a dielectric (e.g., plastic) substrate to provide improved resistance to deformation as compared to conventional aluminum honeycomb. The dielectric honeycomb substrate is metallized to provide EMI shielding capability. The metallized honeycomb substrate is cut slightly oversize to fit an opening in an electronic enclosure, which results in elastic deformation of resilient perimeter spring fingers that are used to hold the metallized dielectric honeycomb in place and provide electrical conductivity between the metallized dielectric substrate and the enclosure, thereby eliminating the use of a frame. In another embodiment, additional conductive layers can be added to the metallized dielectric honeycomb.