Abstract: A card edge connector includes a connector housing having a cavity and holding a contact assembly in the cavity. The contact assembly has a contact positioner holding contacts in a contact array. Each contact includes a mating end, a terminating end, and an intermediate portion between the mating end and the terminating end. The card edge connector includes a connector sleeve coupled to the connector housing movable between a retracted position and an advanced position. The connector sleeve includes an insert received in the cavity having a card slot configured to receive a module circuit board of a pluggable module. The insert includes press anvils configured to engage the intermediate portions of the contacts to move the mating ends of the contacts toward the module circuit board to mate with corresponding contact pads on the module circuit board when moved to the advanced position.

Abstract: A tamper resistant nightlight for placement in an electrical receptacle, the nightlight includes a body that has a base with an LED circuit and plug blades extending from the body. A housing includes a locking element configured to restrict a child from removing the nightlight from the electrical receptacle through a flange that extends away from the body to be positioned behind a rear surface of an electrical wall plate associated with the electrical receptacle to prevent the tamper resistant nightlight from being removed from the electrical receptacle while the electrical wall plate is coupled to the electrical receptacle.

Abstract: A connector includes a housing configured to accommodate a connection terminal, a slide shutter configured to open and close a front opening of the housing to which a mating connector is to be fitted, a first shutter inclined surface provided on the slide shutter, and a housing inclined surface provided on the housing so as to face the first shutter inclined surface and configured to slide the slide shutter in a direction intersecting a connector fitting direction to open the front opening in accordance with a pressing force applied in the connector fitting direction by the mating connector.

Abstract: The present invention relates to a protection apparatus (100) for protecting an electrical circuit. The protection apparatus comprises a thermal protection device (10) for interrupting the electrical circuit at a specific temperature and also an insertion slot (20) for receiving a fuse (21) for interrupting the electrical circuit at a specific current intensity in the electrical circuit. The thermal protection device (10) and the insertion slot (20) are connected in series in the electrical circuit (40), wherein the insertion slot and the thermal protection device are arranged adjacently.

Abstract: An electrical cord plug assembly for inhibiting a male electrical plug from being damaged includes a male electrical plug that is electrically coupled to an electrical cord. The male electrical plug can be plugged into a female electrical outlet. The male electrical plug has a pair of wings each extending laterally away from the male electrical plug. Each of the wings abuts a wall plate of the female electrical plug when the male electrical plug is plugged into the female electrical plug. Additionally, each of the wings extends in opposite directions from each other on the male electrical plug. In this way the wings inhibit the male electrical plug from being bent sideways in the female electrical plug.

Abstract: A wall plate for covering an AC/DC wall outlet includes a generally rectangular or “designer” opening configured to receive the wall outlet. The wall plate includes one or more cord retention members. The cord retention member(s) protrudes from a front face of the wall plate. The retention member(s) protrudes far enough to allow the wall plate to seat on the outlet while a USB plug is in a corresponding DC outlet of the wall outlet. The retention member includes a slot configured to allow a mobile device-attachable plug to pass-through the slot in a first orientation but not a second orientation 90 degrees off from the first orientation. When the USB plug is in the DC outlet, it is in the second orientation relative to the slot.

Abstract: In one embodiment, a method for removably coupling a tray bracket to a cable holder of an information handling system includes: receiving, by an open slot of a lock ring receiver of the cable holder, a closed end of a lock ring of the tray bracket, the lock ring receiver disposed on a surface of the cable holder, the closed end of the lock ring removably coupled to the lock ring receiver; applying, by two or more guiding structures of a lock ring neck receptacle of the cable holder, a compression force on a neck of the lock ring; and causing, by the compression force, the neck of the lock ring to be received by a recessed area of the lock ring neck receptable to removably couple the tray bracket to the cable holder.

Abstract: An apparatus is provided that may be used to secure an object or objects, such as a charging cord and/or charging adapter or block for example, at a location, such as at an alternating current (AC) wall outlet or other electrical outlet. Apparatus can be sized and dimensioned to secure a complimentary smartphone or cellphone and/or computer (e.g., laptop, tablet, etc.) charging cord and/or charging adapter or block to an electrical outlet using a keyed or other mated fastener.

Abstract: A retention clip includes a clip body having a retention portion configured to releasably engage and releasably secure a plug. The retention portion includes clips extending from the clip body. The clips are configured to engage and releasably secure the clip body to the plug. The clip body further includes at least one post extending from the clip body. The at least one post is configured to secure the clip body to a connector element of a support structure by coupling with the connector element.

Abstract: Electrical plug latching systems and related methods are disclosed. According to an aspect, an electrical plug latching system includes a base having an interface for attachment to an electrical plug receptacle. The base defines an opening for receipt of an electrical plug for electrical connection to the electrical plug receptacle. The electrical plug defines a protrusion. Further, the system includes a latch that is attached to the base and that includes a gripper portion. The gripper portion is moveable between a first position and a second position with respect to the base. In the first position, the gripper portion is positioned to interface with the protrusion of the electrical plug to hold the electrical plug in place when electrically connected to the electrical plug receptacle. In the second position. the gripper portion is positioned apart from the protrusion of the electrical plug.

Abstract: The objective is to provide a connector connection regenerating system and a connector connection regenerating method which enable failures regarding connector connections to be solved with reduced costs when the failures have occurred. The objective is solved by a connector connection regenerating system comprising a regeneration circuit, a first connecting circuit connecting a first signal terminal (first terminal) switchably to a signal circuit and to the regeneration circuit, a ground circuit for conducting a regeneration current to a predetermined ground, a second connecting circuit connecting a second signal terminal (second terminal) switchably to a downstream circuit and to the ground circuit, and a controller configured to cause switching the first signal terminal (first terminal) to the regeneration circuit and switching the second signal terminal (second terminal) to the ground circuit.

Abstract: A cable retention system for a power distribution unit includes a tether and a tether mount. The tether has an elongate portion and an attachment portion, and the attachment portion includes a channel therein. The tether mount has a base at a proximal end and a head at a distal end. The base is adapted to attach the proximal end of the tether mount to the power distribution unit. The tether is adapted to be secured to the tether mount by snap-fitting the head of the tether mount into the channel of the attachment portion.

Abstract: Systems and methods for a data reader for retaining a component such as a cover or accessory to a data reader housing, including a first connector such as a connector socket disposed in the housing proximate a housing opening, the component being removably attached to the housing, connection snaps operable for retaining the component to the housing, a cable including a second connector adapted to be connected to the first connector, wherein retention force of the connection snaps for retaining the cover to the housing is augmented via insertion of the second connector between the connection snaps and into connection with the first connector.

Abstract: A grip for securing a power cord at a right angle thereby pulling a power cord at a right angle relative to an outlet includes a tube that is removably mounted on a power cord. The tube has a front end, a back end and an outer surface that extends between the front end and the back end. The outer surface has a slot that extends into an interior of the tube through the front and back ends wherein the power cord is slidably movable through the slot. A plurality of legs is attached to the tube and abuts a vertical wall that has an outlet therein to retain the tube in a perpendicular orientation with respect to the vertical wall. The tube retains the power cord at a perpendicular orientation with respect to the outlet to facilitate the plug to be removed from the outlet at a right angle.

Abstract: Junction boxes for enclosing and making electrical connections to LED drivers are disclosed. The junction boxes include a bottom or base and a cover. Dividers arising from the base divide the junction box into high-voltage and low-voltage compartments. A cut-out open at the top of each divider allows a driver to be placed in a junction box without having to pull wires through holes or openings. Typically, the base is open along the top and along at least a portion of one sidewall, with the cover being L- or U-shaped to complete the enclosure. Various mounting mechanisms are disclosed for securing drivers within junction boxes. Embodiments that can house several drivers or components within one junction box are disclosed, as are weather- and water-resistant embodiments.

Abstract: A power cord retainer is provided for an equipment module including a chassis, a power receptacle, a handle adjacent to the receptacle, and a power cord. The power cord retainer includes a cable clip with a clip portion configured to engage a cable of the power cord, and a mounting portion extending from the clip portion. The power cord retainer also includes a bracket with an elongated section, a plurality of mounts extending along a length of the elongated section for adjustably receiving the mounting portion of the cable clip, and a hook section at one end of the elongated portion configured for partially encircling the equipment module handle. The power cord retainer is configured to secure the power cord plug in the equipment module power receptacle when the clip portion engages the power cord cable and the hook section partially encircles the equipment module handle.

Abstract: A rotating retention fixture for preventing the undesired removal of an electrical cable from a power strip includes a pronged clip, a first bracket, a second bracket each rotatable about a central axis and a fastener that restricts rotation between the first rotatable bracket and the second rotatable bracket. In order to prevent the undesired removal of the electrical cable from the power strip, the electrical cable may be inserted into the pronged clip, the rotating retention fixture may be positioned such that a bottom surface of the pronged clip is adjacent to the electrical cable, a first bracket and a second bracket of the rotating retention fixture may be rotated about the central axis to contact opposing sides of the power strip, respectively, and the fastener may be engaged to prevent rotation between the first bracket and the second bracket to retain the electrical cable to the power strip.

Abstract: Provided are novel building integrable photovoltaic (BIP) modules having flexible connectors and methods of fabricating thereof. According to various embodiments, a BIP module includes a photovoltaic insert having one or more photovoltaic cells and a flexible connector having a flexible member and a connector member. The flexible member provides flexible mechanical support to the connector member with respect to the insert. The flexible member may include a flat conductive strip, a portion of which is shaped to provide additional flexibility to the flexible member along its width. The connector member encloses one or more conductive elements, such as louvered sockets, which are electrically connected to the photovoltaic insert by the flexible member. In certain embodiments, the same flat conductive strip is used to form a shaped portion as well as conductive element and/or a portion of a bus bar extending into the photovoltaic insert.

Abstract: A power cable holder includes a holder body and power cable-holding portions. The power cable-holding portions couple with one or more cables. The cable-holding portions hold power plugs on the cables in a predetermined spacing and order with respect to one another. A power connector plug extraction mechanism may be operable by a user to extract the power connector plugs from corresponding power connector receptacles in a power distribution unit.

Abstract: The invention relates to a locking apparatus for reversibly locking a plug-type connector housing (1) with a mating plug housing (2) provided for this purpose, wherein the locking apparatus (9, 9?, 9?) has at least one locking arm (15, 15?, 15?, 20, 20?, 20?), wherein the at least one locking arm (15, 15?, 15?, 20, 20?, 20?) in turn comprises at least one receptacle (16, 16?, 16?, 17, 17?, 17?), which interacts with bearing pins (18) integrally formed on the plug-type connector housing (1) and the mating plug housing (2) in such a way that the plug-type connector housing (1) and the mating plug housing are pressed against one another, wherein the at least one locking arm (15, 15?, 15?, 20, 20?, 20?) consists of an elastomeric material.

Abstract: A cable retention system for a power distribution unit includes a tether and a tether mount. The tether has an elongate portion and an attachment portion, and the attachment portion includes a channel therein. The tether mount has a base at a proximal end and a head at a distal end. The base is adapted to attach the proximal end of the tether mount to the power distribution unit. The tether is adapted to be secured to the tether mount by snap-fitting the head of the tether mount into the channel of the attachment portion.

Abstract: A mounting plate assembly for securing a plug of a network cable to a jack of an electronic device. The assembly includes a mounting plate having an attachment mechanism that is configured for releasable locking engagement with the electronic device. Further, the mounting plate is adapted to be mounted to a mounting structure. The mounting plate includes inner passageway that is adapted to receive insertion of at least a portion of the plug. Additionally, the inner passageway is adapted to depress a locking clip of the inserted plug to a position that prevents the locking clip from lockingly engaging a protrusion in an aperture of the jack. Further, the retention member may include at least one arm that is configured to retain the plug in a relatively static position relative to the mounting plate when the plug is being received in, and removed from, the aperture of the jack.

Abstract: A child safety plug lock for releasably securing a plug within a power outlet. The plug lock comprises a body portion including a through-hole and left and right sides. The plug lock also includes left and right arm portions which extend from the left and right sides, respectively, of the body portion. Each arm portion includes an inwardly facing flange. The plug lock is designed to be secured to an outlet via the through-hole in the body portion. The flanges are sized and positioned to engage and retain a plug in the power outlet when the plug lock is attached to the power outlet via the through-hole. The left and right arm portions are flexible, and are sized and positioned such that pressure applied to an arm portion causes that arm portion to flex laterally away from the plug.

Abstract: A method and apparatus for securing an electrical connection formed by a mating structure including prongs of a male assembly and receptacles of a female assembly are provided. In certain embodiments, the electrical connection can be secured by frictional engagement between the plug and receptacle housings. This can be accomplished by forcing a wedge into an interface between the housings or expanding a locking element, such as an elastomeric ring, into the interface. Such locking and releasing of the secure connection can be actuated using a locking nut.

Abstract: There is disclosed a device for securing an electrical cord and plug to a power outlet covered by a standard plate cover. The device comprises a first (male) unit having an axial arm that terminates in a base with a plurality of flat hooks for fitting at least partially behind a lateral edge of the standard plate cover. There is also a second (female) unit with its own axial arm terminating in a base with flat hooks for fitting behind the standard plate cover, preferably opposite the first (male) unit. The device further comprises means for connecting the first and second units together to form a bridge about the electrical cord being secured. That bridge slidably adjusts along the axial arms of the two units towards the plug end in its power outlet. A method of use is also disclosed.

Abstract: A shield structure of a conductor cable includes a first case that accommodates a rotating electrical machine, a first terminal block that is provided on the first case, a second case that accommodates an inverter, a second terminal block that is provided on the second case, a conductor cable that electrically connects the first terminal block and the second terminal block to each other, and a metal shell that is arranged across the first case and the second case and covers at least part of a periphery of the conductor cable.

Abstract: An extension apparatus of a power outlet includes a main body and a socket. The main body includes a plug portion and an extension plug portion. The plug portion defines three through holes. The extension plug portion defines three blind holes. Three first metal pieces are mounted in the through holes. Three second metal pieces are mounted in the blind holes and coupled to the first metal pieces. The socket is plugged into the extension plug portion to be coupled to the plug portion. When a first plug is plugged into the plug portion, electrical power is fed to a second plug.

Abstract: A child safety plug lock for releasably securing a plug within a power outlet. The plug lock comprises a body portion including a through-hole and left and right sides. The plug lock also includes left and right arm portions which extend from the left and right sides, respectively, of the body portion. Each arm portion includes an inwardly facing flange. The plug lock is designed to be secured to an outlet via the through-hole in the body portion. The flanges are sized and positioned to engage and retain a plug in the power outlet when the plug lock is attached to the power outlet via the through-hole. The left and right arm portions are flexible, and are sized and positioned such that pressure applied to an arm portion causes that arm portion to flex laterally away from the plug.

Abstract: A system includes an external faceplate including a blind-mate connector and a swing arm removably connected to the blind-mate connector. The swing arm secures the blind-mate connector to an electronic device.

Abstract: A child-resistant plug includes a plug body, at least one prong, and at least one tab extending from the plug body. In one embodiment, a tab is positioned adjacent each of the upper and lower portions of the plug body and each tab is attached to the plug body by a hinging member. The hinging member allows the tabs to rotate between a folded and an unfolded position. When a tab is in its unfolded position, the tab is sized and positioned such that an aperture in the tab aligns with a pre-existing aperture in an electrical outlet cover plate. A fastening member may be used to attach the tab to the cover plate, preventing a child from unplugging a device or accessing the electrical socket. When the tab is attached to the cover plate, and a person pulls the plug or cord with a pre-determined amount of force, the hinging member will break, and the plug will release from the electrical socket.

Abstract: The instant disclosure relates to a plug connector for inserting into at least one hole of an electrical outlet. The plug includes a plug body, a switch, a pushing member, at least one conductive member, and at least one locking member. The plug body is constructed of at least one shell defining a via hole, where the via hole penetrates entirely through the shell. The switch has a connecting end inserted through the via hole for connecting pivotally to the pushing member. The conductive member protrudes from the plug body, and the locking member is arranged in close to the conductive member. Thus, when the switch is operated, the connecting end is driven to push the pushing member to move with respect to the conductive member, and the locking member is pushed by the pushing member to deform or move.

Abstract: A protective device is described for retrofitting to a wall-mounted electrical socket outlet of the kind comprising an open-fronted housing containing at least one electrical socket and a removable front plate screw-fitted to the open front of the housing and having an opening exposing said socket terminals. The protective device comprises a housing which is screw-fittable to the open-fronted socket housing in place of the original front plate and has socket terminals exposed at a front surface. The device includes a hinged flap which can be swung over the exposed socket terminals and there releasably held in place.

Abstract: A retainer comprises at least two retaining straps or retainer screws and a retainer plate having a cord hole, a slot, and a plurality of retainer holes or retainer strap notches. The retainer maintains connection of an electrical power plug at an end of an electrical power cord to an electrical power receptacle when the retainer is installed. The cord hole and slot extend through the retainer plate, and the slot extends from an edge of the retainer plate to the cord hole. Each of the at least two retaining straps is operable to engage a retainer hole or retaining strap notch in the retainer plate and extend from the retainer plate around the electrical power receptacle and back to the retainer plate.

Abstract: A safety cover for a socket or switch has a frame arranged to extend on three sides of a rectangular faceplate of the socket or switch and a cover panel hinged to the frame for pivotal movement towards and away from a position in which the cover panel conceals the faceplate. The frame is of U-shape and defines an opening in which the faceplate is received. The frame has inwardly directed lips contiguous with a rear face of the frame that locate behind the faceplate on opposite sides of the opening clear of the fixing screws used to secure the faceplate to a mounting box. The safety cover can be fitted by partially releasing the screws and sliding the lips under the faceplate as the frame is positioned around the faceplate and then tightening the screws to secure the faceplate and hold the frame in place by securing the lips under the faceplate.

Abstract: An extension apparatus of a power outlet includes a main body and a socket. The main body includes a plug portion and an extension plug portion. The plug portion defines three through holes. The extension plug portion defines three blind holes. Three first metal pieces are mounted in the through holes. Three second metal pieces are mounted in the blind holes and coupled to the first metal pieces. The socket is plugged into the extension plug portion to be coupled to the plug portion. When a first plug is plugged into the plug portion, electrical power is fed to a second plug.

Abstract: A vacuum electronic power tool sense system senses the operation of a power tool that is plugged into an onboard power outlet and the vacuum source is automatically operated to facilitate user clean-up of debris generated by use of the power tool. A delay period can be utilized to maintain the vacuum source is an on state for a predetermined period of time after the power tool is turned off.

Abstract: A system includes an external faceplate including a blind-mate connector and a swing arm removably connected to the blind-mate connector. The swing arm secures the blind-mate connector to an electronic device.

Abstract: An apparatus for holding at least two devices together is provided with a first securing member, a second securing member, and a connecting member extending between the first and second securing members. The first securing member may be an elongate member having first and second ends such that the elongate member has a length between said first and second ends sufficient to wrap around one of the at least two devices, and the first end of the first securing member having securing means that operates to connect the first end to the second end. The second securing member may receive at least one other of the at least two devices, and may have at least two substantially linearly aligned receptacles. Each receptacle may receive the at least one other of the at least two devices. The two devices may be one or more cords, extension cords, and electrical plugs.

Abstract: A system and method for retaining a commercial off the shelf connector and cable into a connector on a pc is shown and described as having a wire bail or retaining clip, which is either screwed to or forced into a friction fit behind a rear panel of the PC at the COTS connectors. The bail or retention clip extends beyond the end of the connector and cradles the cord, this helps to distribute the weight of the cord/cable. Also, the clip is sized and configured to make inadvertent disconnection of the connector less likely.

Abstract: The present invention provides a peripheral device with limited relative angular movement. The peripheral device is configured for detachable operative interconnection with a computing device and comprises a first portion, a second portion, and an operatively connected peripheral device component. The first portion includes a first hinge portion, which defines an axis of rotation, and comprises a first protrusion and a second protrusion. The first protrusion is disposed axially separated at a predetermined distance from the second protrusion. The second portion includes a second hinge portion, which is operatively interconnected with the first hinge portion to allow the first portion and the second portion to rotate relative to one another about the axis of rotation between a first angle and a second angle. The peripheral device component provides one or more peripheral device functions. The first angle and the second angle at least in part are defined by the first protrusion and the second protrusion.

Abstract: A cover plate for an electrical duplex receptacle has an opening or openings therein as required to permit insertion of male plugs into the respective receiving receptacles. A female receptacle component projects outwardly from the cover plate and receives a stud projecting from the body of an inserted plug to thereby lock the plug against withdrawal that would otherwise occur if sufficient force is applied to pull the plug out of the receptacle and cause a loss of power to connected electrical equipment and resulting interruption in the operation thereof.

Abstract: A security device for a HDMI connector having a HDMI connector head provided on an electronic device having a HDMI socket. The security device includes a locking device including a locking head and a plurality of locker arms extended from two sides of the locking head respectively to define a locker channel for detachably receiving the HDMI connector head. Each of the locker arms has a plurality of engaging teeth formed therealong, wherein the locking device is arranged to operate between a locking mode and a releasing mode, wherein in the locking mode, the locker arms are inwardly pressed to bias against the HDMI connector head when the HDMI connector is plugged into the HDMI socket, wherein in the releasing mode, the locker arms are relieved from the pressing force so as to allow the HDMI connector head to be freely detached from the HDMI socket.

Abstract: A detachment-preventing plug for hooking a socket is provided. The detachment-preventing plug comprises a body unit, two conducting pins, a slider member and two resilient hooking members. The body unit has a compartment for receiving the slider member. Each of the resilient hooking members has a protruding portion and an exposing hooking end. Each of the protruding portions protrudes toward the slider member and is engaged with the slider member, and a hooking portion is formed on each of the exposing hooking ends. The two conducting pins have two slots respectively. When the two conducting pins are inserted into the socket, the two resilient hooking members are adapted to pass through the two slots and hook the socket by the two hooking portions, wherein a user could drive the slider to make the two resilient hooking members establish a releasing configuration or a hooking configuration.

Abstract: A cord anchor device is used in conjunction with an electrical cord itself to prevent an electrical plug from becoming dislodged from an electrical socket of an electrical outlet assembly. Several embodiments and attachment methods are disclosed including methods where the electrical cord may be attached by “looping and threading” the electrical cord through the cord anchor device.

Abstract: In one embodiment, an apparatus for providing electrical power comprises a housing, at least two electrical outlets, a rotation coupler at the housing and coupled to the at least two electrical outlets, and a prong adapter rotatable relative to the rotation coupler when secured thereto. The rotation coupler comprises a central contact, a first contact set, and a second contact set. The prong adapter comprises a first prong to couple with the first contact set, a second prong to couple with the second contact set, and a third prong to couple with the central contact. The first contact set comprises two or more first contact flanges to couple with the first prong at a rear of the prong adapter. The second contact set comprises two or more second contact flanges to couple with the second prong at the rear of the prong adapter. Other examples herein described.

Abstract: An electronic apparatus includes a housing and a retaining member. The housing includes a connecting hole and an engagement hole. A connector is detachably connected to the connecting hole. The engagement hole includes a passing zone and an engagement zone that are communicated to each other. The retaining member includes a fixing end, an engagement end, and a retaining portion. The fixing end is fixed to the housing. The engagement end is capable of passing into the housing through the passing zone and is adapted to be engaged with the engagement zone. The retaining portion is connected between the fixing end and the engagement end for trapping the connector.

Abstract: An outlet cover for an electrical outlet which prevents unintentional disconnection of an electrical plug from the electrical outlet. The outlet cover includes a plate having at least one opening sized and positioned to receive the electrical plug and a lid hingedly attached to the plate so that the lid can be moved between an open position that allows access to the electrical outlet and a closed position wherein the electrical outlet is covered by the lid. The lid includes a base, a prong having a proximal portion connected to, and extending outwardly from, the base, and a distal portion that is spaced from the base by the proximal portion. The electrical cord is positioned between the prong and the base such that the prong and base cooperate together to secure the electrical cord such that the electrical plug is not unintentionally disconnected from the electrical outlet.

Abstract: A device for preventing electrical shock from a device with electrical interfaces. A shutter or other barrier associated with the device that physically prevents access or contact to one of the electrical interfaces while another electrical interface is in use.

Abstract: The invention relates to an electric connector terminal for guiding a circuit through a wall (1), having a first terminal (2) to be mounted at a side of the wall and a second terminal (3) to be mounted at the other side of the wall (1), with the first terminal (2) comprising a connector element (4) to connect to the second terminal (3), the connector element (4) can be inserted into the second terminal (3), the second terminal (3) comprising a power line (6) for the electric connection to the first terminal (2), the power line (6) can be inserted into the connector element (4), and the surface of the connector element (4) facing away from the power line (6) comprising a creepage power extension (10). The creepage power extension (10) according to the invention increases the creepage distance, so that the electric connector terminal according to the invention can be impinged with higher voltages.

Abstract: A device for preventing electrical shock from a device with electrical interfaces. A shutter or other barrier associated with the device that physically prevents access or contact to one of the electrical interfaces while another electrical interface is in use.