Abstract: A compliant ground block for a testing system for testing integrated circuit devices is disclosed. The compliant ground block includes a plurality of electrically conductive blade pairs in a side by side generally parallel relationship. Blades in the plurality of blade pairs are configured to be longitudinally slidable with respect to each other. The block also includes at least one elastomer configured to retain the plurality of blade pairs. Each blade pair of the plurality of blade pairs includes a first blade (or a first blade assembly) and a second blade. The first blade (or the first blade assembly) and the second blade are configured to generate scrubbing motions when the device under test is being pressed down on the compliant ground block or is being released from the compliant ground block.

Abstract: Reliable contacts for connectors, connector receptacles that can be easily aligned to an opening in an electronic device, and connector inserts and connector receptacles that are readily manufactured. One example can provide a spring-biased contact having plunger extending through an opening in a barrel and biased by a spring. An intermediate object can be positioned between the plunger and the spring. The intermediate object can contact a barrel in at least two locations on the barrel.

Abstract: An electrical connector includes a conductive housing having a first receiving portion with an open end, a movable terminal having a first end inserted into the first receiving portion via the open end, the movable terminal having a second receiving portion, and a first elastic piece located in a space defined by the first receiving portion and the second receiving portion. A second end of the movable terminal opposite to the first end protrudes movably out of the first receiving portion against an elasticity of the first elastic piece. The first end of the movable terminal has a first elastic arm elastically abutting an inner side wall of the first receiving portion. The movable terminal is electrically connected to the conductive housing by each of the first elastic piece and the first elastic arm.

Abstract: An electrical test probe (200) is presented. It comprises a test prod (210), a tube (220) and an elastic element (230). The test prod (210) has a first terminal (211) provided to form a contact with a power module to be tested and a second terminal (212) provided to be connected with a testing equipment. The test prod (210) also has a first stopper (213) between the first terminal (211) and the second terminal (212). The tube (220) has an internally extending stopper (221). The tube (220) is mounted around the test prod (210) in a longitudinal direction of the test prod (210). The elastic element (230) is accommodated between the first stopper (213) of the test prod (210) and the internally extending stopper (221) of the tube (220). The tube (220) and the test prod (210) can have a relative movement within an elastic range of the elastic element (230). The area of a cross section of the test prod (210) is much larger than the area of the cross section of the elastic element (230).

Abstract: A connector including a terminal having a flat facing surface facing a mating terminal of a mating connector; a resilient conductor provided to contact the facing surface, the resilient conductor being capable of contacting the mating terminal while being resiliently deformed in a direction orthogonal to the facing surface, the terminal being electrically connectable to the mating terminal via the resilient conductor, and a movable protecting body configured to be movable between a protection position that covers the facing surface on a front side in an assembling direction toward the mating terminal and a retracted position closer to the facing surface than the protection position, the movable protecting body including an insertion opening into which the resilient conductor is inserted at the retracted position, the resilient conductor projecting from the insertion opening being capable of contacting the mating terminal with the movable protecting body held at the retracted position.

Abstract: A connector to connect to a liquid metal wire includes a hollow conduit configured to connect to a tubular wire casing, and further includes a reservoir including a solid metal conductor. The reservoir is to receive liquid metal to substantially fill a volume of the reservoir such that the liquid metal extends into the tubular wire casing. The tubular wire casing, filled with the liquid metal, becomes the liquid metal wire.

Abstract: Structures and methods for connector assemblies and their spring-loaded contacts that may resist corrosion, consume a minimal volume in an electronic device, and are readily manufactured.

Abstract: A connection device includes a conductive first counterpart terminal formed into a tubular shape with one side in a first direction open and the other side blocked, a conductive relay terminal provided inside the first counterpart terminal, an interposition member provided inside the first counterpart terminal, and interposed between the first counterpart terminal and the relay terminal with respect to intersection directions, an elastic member provided inside the first counterpart terminal, interposed between a blocked end portion that is an end portion on the blocked side of the first counterpart terminal and the relay terminal 31 with respect to the first direction, and elastically deformable along the first direction, and a second counterpart terminal that is a conductive terminal different from the first counterpart terminal and coming in contact with an end portion on an opposite side of the elastic member side of the relay terminal.

Abstract: The present invention relates to a contact element for an electrical connection, and to a circuit arrangement having at least one said contact element. A contact element for an electrical connection may include a first contact region of a first copper material for electrically connecting to a first circuit component and a second contact region of a second copper material for electrically connecting to a second circuit component. The first contact region and the second contact region each have a different material hardness, and the two contact regions are interconnected by a materially bonded connection.

Abstract: The invention addresses ways to protect the free ends of communication lines from debris during downhole connection. A lower assembly, positioned downhole, has a lower connector with a free end of a communication line. An upper assembly is moved downhole and has an upper connector. A reciprocating member with attached protective cover is mounted for movement on the lower assembly. A second reciprocating member with attached protective cover is mounted for reciprocating movement on the upper assembly. The free ends are connected as the upper and lower assemblies are moved toward one another. Upon disconnection, the upper and lower connectors are moved apart and the reciprocating members return to their initial positions, again protecting the free ends of the communication lines. The covers are preferably biased towards a closed position and return to a closed state upon disconnection.

Abstract: A contact terminal having a main body case and a plunger pin received in an elongate hole formed in the main body case is provided. The plunger pin is a round bar provided with a step and includes a small diameter portion including the protrusion end portion and a large diameter portion that slides on a surface of the hole to freely move in a longitudinal direction thereof. A cut space is formed to extend from an end of the large diameter portion so as to leave at least a part of a side surface portion of the large diameter portion and the cut space receives an insulation ball including at least an insulation surface. A coil spring is arranged between the hole and the insulation ball to press the protrusion end portion of the plunger pin such that the protrusion end portion protrudes from the main body case.

Abstract: An image forming apparatus includes an image forming unit including a photosensitive drum configured to rotate about a rotation axis of the photosensitive drum, a resin frame configured to support a first end of the image forming unit in an axial direction of the photosensitive drum, a sub frame supported by the resin frame, a board supported by the sub frame and configured to supply a high voltage to the image forming unit, and a springy electrode disposed on the board and apart from edges of the board such that the springy electrode is compressed between the image forming unit and the board. The sub frame includes a plurality of first support portions disposed to support the board at at least three support points and a plurality of second support portions disposed to be supported by the frame at at least three support points.

Abstract: A dispenser niche for a refrigerator is provided. The dispenser niche includes an illuminator to at least partially illuminate the niche. The illuminator has LEDs that are arranged on a common circuit board with first electrical contacts. A wall of the dispenser niche has second electrical contacts and a recess that receives the common circuit board in a single orientation. The first electrical contacts of the common circuit board and the second electrical circuits of the wall touch each other in the single orientation.

Abstract: An image forming apparatus, comprising: a frame body to which an attachment unit is detachably attachable, the attachment unit being configured to have an input electrode and to be used for image formation on a recording medium; a power source substrate configured to have an output electrode for outputting a voltage and to be attached to the frame body from an opposite side with respect to a side on which the attachment unit is attached; and a connection electrode configured to electrically connect the output electrode to the input electrode of the attachment unit, wherein the frame body comprises an insertion part into which the connection electrode is inserted from an opposite side with respect to a side on which the power source substrate is attached.

Abstract: A contact includes a contact body including a tip, a spring beam opposite the tip and a shoulder between the tip and the spring beam. A plunger is movable with respect to the contact body and has the plunger having a tip and a shoulder. A biasing member is contained by the shoulders. The biasing member imparts a biasing force on the shoulder of the plunger. The biasing member is compressed as the plunger moves relative to the contact body. The spring beam engages the plunger between the tip and the shoulder of the plunger and is spring biased against the plunger to electrically couple the contact body and the plunger. An electrical path is defined from the tip of the plunger to the spring beam and to the tip of the contact body. The electrical path is routed outside of the biasing member.

Abstract: A pogo pin connector includes an insulating housing, a plurality of pogo pins and contact terminals assembled forward in the insulating housing respectively. Front ends of the pogo pins retractably project beyond a front face of the insulating housing. A rear end of each of the pogo pins protrudes outward to form a riveted flange. Each of the contact terminals has a fastening plate placed levelly, an elastic contact arm curvedly extending upward from a front end of the fastening plate to elastically project beyond a top face of the insulating housing, and a fixing strip extending downward from a rear end of the fastening plate with a through hole being opened in a bottom end thereof. The rear ends of the pogo pins pass through the through holes of the contact terminals respectively to make the riveted flanges and the corresponding fixing strips riveted together.

Abstract: A bulb socket includes a socket body in which a bulb is mounted, an earth terminal, a pair of terminal fittings for making elastic contact with a contact point of the bulb, and packing 6 with which a gap between the socket body and an attachment part of the socket body is sealed. One end of the socket body is provided with a mounting port of the bulb. The earth terminal and the terminal fittings are attached to the inside of the mounting port. The terminal fitting includes a body, a leg part linearly extending from one end of the body, and a spring part extending from the other end of the body in a meandering shape. The spring part includes four bent parts. Bending angles of the bent parts are equal.

Abstract: A contact terminal having a main body case and a plunger pin received in an elongate hole formed in the main body case is provided. The plunger pin is a round bar provided with a step and includes a small diameter portion including the protrusion end portion and a large diameter portion that slides on a surface of the hole to freely move in a longitudinal direction thereof. A cut space is formed to extend from an end of the large diameter portion so as to leave at least a part of a side surface portion of the large diameter portion and the cut space receives an insulation ball including at least an insulation surface. A coil spring is arranged between the hole and the insulation ball to press the protrusion end portion of the plunger pin such that the protrusion end portion protrudes from the main body case.

Abstract: Isolated pressure compensating electrical motor connections and related methods are provided. According to an example of a sealed motor electrical connection, the connection incorporates a sealed female motor connection positioned to receive a male motor connector. The female motor connector has one or more independent dielectric oil chambers each pressure compensated by a bellow or similar device interfaced with the motorhead oil and/or well annulus fluid to thereby pressure compensate the chamber pressure of the female motor connection with that of the internal motor and/or well annulus. This configuration locates the electrical connection point of the motor lead extension with the motor lead wires to a separate area outside the motor to thereby prevent the occurrence of phase to phase or phase to ground shorts occurring in this critical area due to conductive element contamination that may reside in the motor oil or the well bore fluids.

Abstract: Spring-loaded contacts having an improved reliability. One example may provide spring-loaded contacts having a reduced likelihood of entanglement between a spring and a plunger. For example, a piston may be placed between a plunger and a spring. The piston may have a head portion that is wider than the diameter of the spring and located between the spring and the plunger to isolate the spring and the plunger. In these and other examples, an additional object, such as a sphere, may be placed between the plunger and spring. In another example, two additional objects, such as two spheres, may be placed between a plunger and piston.

Abstract: A contactor including a bellows body, a fixed portion, connected to one end of the bellows body and provided with at least one fixed touch piece extending along the bellows body, and a movable portion, connected to the other end of the bellows body, where the movable portion is configured to be depressed to compress the bellows body and to bring the movable portion and/or the bellows body into contact with the fixed touch piece of the fixed portion.

Abstract: A spring contact and a socket embedded with spring contacts. The spring contact includes an upper contact pin having a contact portion, two spring holding protrusions and a body, a lower contact pin coupled to the upper contact pin, and a spring fitted over the assembly of the upper and lower contact pins, wherein the body has two symmetric elastic portions with both an oblique surface and a locking protrusion, in which a moving slit is formed between the elastic portions so as to provide a moving space for an opposite contact pin, with moving grooves being formed to movably receive the locking protrusions of an opposite contact pin and to be in electric contact with the locking protrusions.

Abstract: A compressible contact pin. The contact pin includes a first contact element and a second contact element. A compressible member is coupled between the first contact element and the second contact element to compress when one or more external forces are applied between the first contact element and the second contact element. In addition, the compressible member maintains a separation distance between the first and second contact elements when no external forces are applied. An elastomeric connector is coupled between the first contact element and the second contact element. The elastomeric connector electrically couples the first contact element to the second contact element by deforming when the one or more external forces are applied between the first contact element and the second contact element.

Abstract: A conductive contact includes a hollow cylinder, a spring strip and a contact head.

Abstract: Spring-loaded contacts having an improved reliability. One example may provide spring-loaded contacts having a reduced likelihood of entanglement between a spring and a plunger. For example, a piston may be placed between a plunger and a spring. The piston may have a head portion that is wider than the diameter of the spring and located between the spring and the plunger to isolate the spring and the plunger. Another example may have a reduced likelihood of spring damage caused by excess current flow. For example, a plunger may have an eccentrically-tapered back. This eccentrically-tapered back may contact the head portion of the piston. The eccentricity may help to ensure that the plunger tilts at an angle such that the plunger or the piston, or both, contact a barrel of the spring-loaded contact, thereby avoiding current flow and resulting damage to the spring.

Abstract: A connector including a contact member and a housing. The contact member includes a spring part having a length variable in an axial direction, and a contact part extending from an axial end of the spring part and adapted to be pushed against and electrically connected to a counterpart flat contact. The spring part includes a slanted meandering portion provided with a plurality of major arms spaced from each other in the axial direction and generally slanted with respect to the axial direction. The slanted meandering portion is adapted to be elastically deformed so as to narrow a space between the major arms by a contact pressure applied from the counterpart flat contact to the contact part. The contact part is adapted to be displaced so as to slide on the counterpart flat contact by an elastic deformation of the slanted meandering portion.

Abstract: A terminal end for a flat test probe having tapered cam surfaces providing a lead-in angle on the tail of the terminal end which extend to a sharp rear angle to engage detents or projections within a receptacle. The tapered cam surfaces and shape rear angles allow the probe to be inserted into the receptacle with minimal force to retain the flat test probe within the receptacle.

Abstract: An electrical contact pin includes an outer shaft, an inner shaft at least partially received within the outer shaft and slidable relative to the outer shaft, and a rotatable member disposed at a free end of the inner shaft. The rotatable member is rotatable relative to the inner shaft in at least one direction.

Abstract: An object of the present invention is to provide a helical spring having a small spring constant, a connector, an electrode and an electrometer. Specifically, the spring constant is 2.0 gf/mm or smaller until the spring is compressed to 50% or more in an axis direction.

Abstract: A spring contact (12) has a tail contact (14) and a tip contact (16) which are secured together in a telescoping arrangement. The tail contact (14) is formed as a first single element member (22) having two contact arms (28) which are spaced apart and extend forward to engage the tip contact (16). Two contact protuberances (34) extend outward from respective edges the two contact arms (28). The tip contact (16) is formed of a second single element member (50) having two elongate sides (58) and a mounting protrusion (56) which rearwardly extend in parallel toward the tail contact (14). The two sides (58) extend in a cantilever arrangement and have two elongate slots (66) formed therein for receiving respective ones of the contact protuberances (34).

Abstract: A low inductance contact comprises a coil spring and a conductively coupled pin. The pin has coupling surfaces which enable the coil spring to be attached to the pin in a manner that prevents rotation of the spring's ends. The spring provides an axial pin bias to contact tips, and a torsional bias for conductive coupling between the spring and the pin. The torsional bias is generated by an axial displacement of the spring and by twisting the spring a predetermined angle prior to attachment to the pin. A torsion-induced contact between the pin and the spring enables a conductive path through the pin, while bypassing the coils of the spring. The torsional bias further enables a positive attachment of the spring to the pin. Pins can be fabricated from a drawn profiled stock by stamping or machining. Essential pin coupling features can be prefabricated in a drawn profiled stock.

Abstract: An electrical contact assembly electrical contact assembly comprises upper contact having a lower mating end at a lower end thereof, a lower contact having a base portion and a pair of mating beams extending vertically from the base portion for a length respectively and for engaging with the lower mating end of the upper contact, and a spring located between the upper contact and the lower contact. A channel is defined between the mating beams and providing a space to allow movement of the lower mating end. The pair of mating end has unequal lengths for providing unequal torque on the lower mating end, thus ensuring reliable electrical connection between the upper contact and lower contact even under worse circumstance.

Abstract: A spring contact, including: an upper contact pin having a contact portion, a head, a neck, a body and two spring holding protrusions; a lower contact pin having a construction that is the same as or similar to that of the upper contact pin and being coupled to the upper contact pin while crossing at right angles; and a spring fitted over an assembly of the upper and lower contact pins, wherein to increase the strength of the upper contact pin and increase the surface area of the contact portion, the head forms a cylindrical or square column shape or a part of the contact pin within the range from the contact portion to the spring holding protrusions has a thickness greater than the thickness of the body, thereby increasing the strength of the upper contact pin and increasing the surface area of the contact portion.

Abstract: The invention is embodied in a contact that is fixed in a housing of a socket to be connected with an electronic component and makes a contact with an electrical contact of the electronic component. The contact has a pair of contact pins and a spring member. Each of the contact pins includes a straight section approximately straightly extending from a first end section to a second end section, and are coupled with each other in an attitude in which the first end section is respectively oriented to the second end section and the respective straight sections overlap with each other, and each of the contact pins includes a clip section being folded back in a curve from the second end section to cooperate with the second end section to pinch the first end section of a counterpart therebetween. The spring member surrounds both of the straight sections of the pair of contact pins and gives a force in a direction in which the clip sections of the pair of contact pins are moved away from each other.

Abstract: A spring contact assembly having a first plunger with a tail portion having a flat contact surface and a second plunger having a tail portion with a flat contact surface wherein the flat contact surfaces are overlapping and are surrounded by an external compression spring such that the sliding engagement of the flat surfaces increases during compression of the spring.

Abstract: A probe connector adapted for fastening a cable thereto includes an insulating housing and a plurality of probe pin assemblies. The insulating housing defines a plurality of fastening openings and inserting holes penetrating therethrough. The probe pin assembly includes a shell, a plunger and an elastic element assembled in the shell. The shell has a barrel partly received in the inserting hole, and a box-shaped base shell received in the fastening opening. The base shell has a rear plate extending rearward. The rear plate extends rearward to form a connecting piece of which two opposite side edges define two clipping pieces capable of being bent towards each other to clip a core wire of the cable therebetween. The plunger partially projects out of the barrel and the inserting hole. Then the rear plate is bent downward to make the probe pin assembly be a right-angled shape.

Abstract: The present invention relates to a spring contact and a socket embedded with spring contacts.

Abstract: A spring contact assembly having a first plunger with a tail portion having a flat contact surface and a second plunger having a tail portion with a flat contact surface wherein the flat contact surfaces are overlapping and are surrounded by an external compression spring such that the sliding engagement of the flat surfaces increases during compression of the spring.

Abstract: An electrical connector includes a pedestal terminal which has a base board, two fastening boards extending upward from two sides of the base board, and two elastic boards extending upward from two free ends of the fastening boards and inclined gradually away from each other in process of extending upward, and a connecting terminal having two elastic arms and a bent portion connecting the elastic arms together to make the connecting terminal show a substantial inverted-V shape. Two free ends of the elastic boards are bent inward to form two restraining portions. Two free ends of the elastic arms are arched outward to form two interfering portions. The connecting terminal is movably engaged with the pedestal terminal with the elastic arms restrained between the restraining portions, the interfering portions abutting against insides of the corresponding elastic boards and the bent portion projecting upward beyond the pedestal terminal.

Abstract: A probe connector includes a positioning shell having a barrel of which a bottom is sealed up by a base board and a top is opened freely, a probe pin having a connecting portion movably inserted in the barrel and a touching portion extending upward from a top of the connecting portion, an elastic element assembled between the connecting portion and the base board, and a pedestal body having an inserting space opened thereon. A top periphery edge of the barrel is shrunk inward to form a blocking eave blocking the connecting portion in the barrel, with the touching portion projecting upward out of the positioning shell. A bottom of the base board protrudes downward to form a positioning pillar. The pedestal body is removably assembled under the base board by means of the positioning pillar inserted in the inserting space.

Abstract: A connector comprises a base plate defining a first end and a second end along a longitudinal direction, a first connecting arm, a first end of which is connected with the second end of the base plate, and a second end of which is substantially extended upwards relative to the first end thereof, a contact arm, a first end of which is connected with the second end of the first connecting arm, and a second connecting arm, a first end of which is connected with a second end of the contact arm, and a second end of which is substantially extended downwards to the base plate so as to be contactable with the base plate. The connector has multiple connecting paths, thus realizing good high-frequency characteristics.

Abstract: A power tool has a mechanism for ejecting a battery pack which includes a receiving frame which defines a cavity to receive a battery pack. A receiving member is adjacent the cavity. The receiving member meshes with a member on the battery pack to hold the battery pack in the cavity. A biasing member is in the cavity adjacent the receiving member. The biasing member ejects the battery pack from the ejecting mechanism. A member retains the biasing member in the cavity. The member guides a portion of the battery pack meshing with the receiving member into contact with the biasing member such that when the battery pack is locked onto the frame, the biasing member is in a compressed condition and when the battery pack is an unlocked position, the biasing member ejects the battery pack from the frame.

Abstract: A contact (1) includes a first contact pin (2), a second contact pin (3) and a spring (4). The first contact pin includes a mating end (26), a body (23) having a first body portion (232) and a second body portion (231), a pair of ear portions (24) and a pair of first blocking portions (22). The first body portion has a thickness greater than that of the second body portion. The second contact pin includes a pair of second blocking portions (32), and a pair of resilient beams (33) slidable between a latched position and an unlatched position. The resilient beams are confined by the ear portions. The resilient beams clasp the first body portion in the latched position. The spring is compressible between the pair of first blocking portions and the pair of second blocking portions.

Abstract: A probe pin includes a barrel having an internal space extending from one end to the other end, a plunger provided at the one end of the barrel, a plunger provided at the other end of the barrel, and a coil spring received in the barrel for supporting the plungers elastically. The coil spring includes a central portion having substantially same diameter, a first taper portion adjacent to one end of the central portion and having diameters decreased gradually, and a second taper portion adjacent to the other end of the central portion and having diameters decreased gradually.

Abstract: A probe connector adapted for fastening a cable thereto includes a shell, a plunger and an elastic element. The shell has a barrel and a base shell with an accommodating chamber therein. The base shell is connected with the barrel. A bottom of the base shell extends downward to form a connecting piece of which two opposite side edges oppositely extend outward to form two clipping pieces. The clipping pieces are bent towards each other to clip a core wire of the cable therebetween. The plunger is movably inserted in the barrel and further projects out of the barrel. The elastic element is telescopically assembled in the barrel and the accommodating chamber along the movement direction of the plunger, with one end thereof resisting against a bottom of the plunger and the other end thereof abutting against an inner side of a bottom plate of the base shell.

Abstract: A spring connector includes a barrel, a plunger and a spring. The barrel includes a longitudinal space formed therein, an opening formed at a top thereof, a bottom plate formed at a bottom thereof and a narrow portion formed from a middle portion and to the bottom thereof. The plunger includes a contact portion protruding from the opening, a sliding portion received in the longitudinal space, and a limit recess formed in the lower sliding portion. A top end of the spring is received in and limited by the limit recess, and a bottom end and a middle portion is limited by the narrower portion to restrict the spring being compressed along a longitudinal direction thereof. The spring is also prevented from deviating from the longitudinal direction thereof.

Abstract: A contact for an electrical test comprises a first area to be bonded to a board, a second area extending in the right-left direction from the lower end portion of the first area, a third area projecting downward from the tip end portion of the second area, and a low light reflective film having lower light reflectance than that of the first area. The third area has a probe tip to be contacted an electrode of an electronic device. The low light reflective film is formed on a surface of at least the bonding part of the first area to the board and its proximity.

Abstract: A female contact pin configured for use with a compliant pin system includes opposed contact beams separated by an opening, and spring-biased mating contacts surrounded by a protective box. The opposed contact beams are configured to be positioned within a plated thru hole. The opening closes when the opposed contact beams are positioned within the plated thru hole. The spring-biased mating contacts are configured to receive and contact a mating post of a male contact pin.

Abstract: An electrical contact assembly electrical contact assembly comprises upper contact having a lower mating end at a lower end thereof, a lower contact having a base portion and a pair of mating beams extending vertically from the base portion for a length respectively and for engaging with the lower mating end of the upper contact, and a spring located between the upper contact and the lower contact. A channel is defined between the mating beams and providing a space to allow movement of the lower mating end. The pair of mating end has unequal lengths for providing unequal torque on the lower mating end, thus ensuring reliable electrical connection between the upper contact and lower contact even under worse circumstance.

Abstract: A supporting belt for a transport device, such as an elevator system, includes at least one stranded wire made of an electrically conducting material for absorbing the forces absorbed by the supporting belt and an electrically insulating jacket that encloses the wire. In order to determine the state of the wire, the wire can be contacted by a contact element securely and reliably and in an exact manner. To achieve this, the jacket is at least partially removed in the area of an opening of the supporting belt and the wire is at least partially exposed in the area of the opening. The wire thus does not include a jacket substantially perpendicularly to a longitudinal axis formed by a center point of a cross-section of the wire. The wire can be contacted by a contact element without the jacket being pierced.