Abstract: Connector assemblies for use to concurrently transmit multiple signals or sources. The connector assemblies are generally formed by coupling a plurality of ring contacts, sealing rings, and spring contact elements together with at least one holding ring to form a connector having a common bore for receiving a lead cable. Contact grooves or spring chambers for positioning the spring contact elements are formed in part by assembling multiple components together. The connector assemblies may be used in a number of industries and applications.

Abstract: This patent discloses an improved multi-pin electrical connector for use in wet environments. Multi-pin connectors are widely used. In some uses, the connectors may be exposed to water. The improved connector keeps external water from entering the connector and isolates any water inside the connector. A number of improvements are disclosed, including seals for the pins, seals for the wires exiting the back of the connector, and bonding internal insulator materials. The invention also incorporates an improved female receptacle design that provides a better male-to-female connection, thus improving performance of the connector. The multi-pin connector disclosed is suitable for use in almost any wet environment.

Abstract: An electrical connector forms electrical contact by tightening of a movable, electrically-conductive spiral around un-insulated wire or wires. The spiral coils around the wire multiple times and tightens on the wire(s) when either one or the other end, or both ends, of the spiral is/are rotated relative to the other. One region of the spiral is preferably fixed to an insulating housing, while another region of the spiral may be rotated for the tightening on the wire and then preferably latched to the housing so that the spiral remains in the tightened condition. A terminal end may extend from the spiral, or connectors without a terminal end may be used to electrically connect wires to each other that extend from and to other equipment not located on the connector itself. Multiple spirals may be provided in one connector, including spirals that tighten around separate wires at opposite ends of the connector.

Abstract: A coaxial plug-type connector arrangement includes two plug-type connectors, which can be plugged one inside the other so as to latch in along a plug axis. Each plug-type connector includes a housing that extends in the direction of the plug axis and acts as an outer conductor. The housing has a drilled through-hole in which an inner conductor contact is held in insulated fashion with a coaxial arrangement.

Abstract: A wire harness is divided in an arrangement direction, and terminals are connected to ends of wires of the divided wire harnesses and respectively mounted into first and second connectors. An intermediate connector is provided which includes a first connector fitting portion and a second connector fitting portion, into which the first and second connectors respectively are fit, and a partition wall is disposed between the first and second connector fitting portions. Intermediate terminals are inserted through the partition wall of the intermediate connector and electrical contact portions at both ends of the respective intermediate terminals project into the first and second connector fitting portions. A waterproofing agent is filled in a part of one or both of the first and second connector fitting portions in contact with the partition wall to embed parts of the intermediate terminals except the electrical contact portions therein.

Abstract: Disclosed herein is a submersible electrical set-screw connector. The submersible electrical set-screw connector includes a connector body section and a first sealing member. The connector body section includes a first opening and a second opening. The first opening is substantially perpendicular to the second opening. The first opening is adapted to receive a portion of an electrical conductor. The first sealing member is removably connected to the submersible electrical set-screw connector. The sealing member is adapted to receive the electrical conductor. The sealing member includes an outer cylindrical surface and an inner cylindrical surface. The outer cylindrical surface includes a first centerline axis. The inner cylindrical surface includes a second centerline axis. The first centerline axis is offset from the second centerline axis.

Abstract: Disclosed herein is an electrical connector, which includes a first base, a second base and a cover. The first base includes a first recess and a first conductor. The first recess is positioned on an upper surface of the first base. The first conductor extends into the first recess through a lateral surface of the first base. The second base, has a structure similar to the first base, and includes a second recess and a second conductor. The cover includes a body, a first convex ring, a second convex ring and a metallic connector. When the cover engages with both the first and second bases, the first and second convex rings respectively engages with the first and second recesses, and thus forming two enclosed space.

Abstract: An electrical tool includes a main housing, an operative portion integrally connected to, and forming part of, the main housing, and a plug integrally connected to, and forming part of, the main housing. The plug comprising a base or main body, a plug connecting interface and first and second spades extending from the plug connecting interface. The first and second spades are in a standard configuration.

Abstract: The invention relates to an electrical plug-type connector (1) having a socket-like contact element (6), which is arranged in a contact chamber (2), which comprises at least two chamber parts (3, 4), which bear against one another with in each case at least one abutting face (24, 25), is made from plastic and has a plug-in opening (8). The invention provides for the outer face (5) of the contact chamber (2) to be completely coated with a conductive layer and for the abutting faces (24, 25) to be overlapped laterally by an overlapping wall section (27) on the outside of the contact chambers (2), and for that side of the overlapping wall section (27) which faces the abutting faces (24, 25) to likewise be coated with a conductive layer.

Abstract: An electric device has a plug connection provided with a plug that has at least one contact pin and further provided with a mating plug receptacle that has at least one contact tube. A closure device is arranged on the plug receptacle and has a closed position for protecting the at least one contact tube. The closure device is moved by the plug into an open position when the plug is inserted into the plug receptacle, wherein in the open position the at least one contact tube is released.

Abstract: A connector for attaching a cable to a terminal includes a connector body with a hex head fastener rotatably attached at one end of the body. A compressible gasket or clamp sleeve is positioned along the connector body for engaging and sealing about a portion of the jacket of the cable received within the connector.

Abstract: An electrical penetrator assembly has a ceramic housing with a through bore, a first electrical conductor extending through a first end of the bore and terminating short of a second end of the bore and having an outer end engageable with a first cable, and a second electrical conductor extending through a second end of the bore and terminating short of the first end of the bore, the second conductor having an outer end engageable with a second cable. The conductors are in electrical communication at their inner ends and at least one of the conductors is movable relative to the other conductor to accommodate expansion and contraction as a result of temperature variations, and first and second seals extend between respective ends of the ceramic housing and the first and second conductor, respectively.

Abstract: There is disclosed a power connection apparatus which can secure connection between a power socket and a power plug with a simple constitution and which can simplify the connecting operation properties thereof. A handle rotatably attached to the power plug having terminals includes engaging claw disengageably engaged with engagement portion of the power socket having an electrode portion, an abutment portion which abuts on the power socket, and a grip portion. In a state where the handle is rotated to such an angle that the handle is at substantially right angles to the power socket, the abutment portion abuts on the power socket, thereby releasing connection between the electrode portion and the terminals or the like.

Abstract: A sealed power distribution module includes a nonconductive body defining a terminal receptacle, a barrier seal engaged to and surrounding the body adjacent the receptacle on an exterior surface of the body, a terminal element grid fitted within the receptacle, and provisions for installing commercially available sealed terminals to complete the wiring. The grid is engaged to the body at a location interior to the barrier seal. The power distribution module may also include one or more bus bar assemblies oriented such that simultaneous switching of relay packages is possible.

Abstract: Disclosed herein is an electrical connector for use with an underwater electrical device. The underwater electrical device is connected to a source, such as a power source, by electrical wiring. The connector is adapted for connecting the source and the underwater electrical device without compromising the integrity of the electrical connection despite expected movement and considerable torsional forces being exerted upon the connection so made. In an exemplary embodiment, the electrical device includes internal screw threads. The connector includes an insertion member for retaining the electrical wiring. The insertion member is elastic and deformable. The connector further includes a clamping member having an external screw for compatible engagement of the electrical device internal screw threads. Finally, the connector includes a sealing member for creating a leak proof seal between the connector and the electrical device.

Abstract: Connector assemblies for use with implantable medical devices having easy to assemble contacts are disclosed. The connector assemblies are generally formed by coupling a plurality of contact housings, sealing rings and leaf spring contact elements to form a connector having a common bore for receiving a medical lead cable. Contact grooves for positioning the leaf spring contact elements are formed in part by assembling multiple components together.

Abstract: A submersible connector has releasably mateable plug and receptacle units. The plug unit has at least one electrical pin while the receptacle unit has at least one electrical socket module which receives a forward portion of the electrical pin when the units are mated. The pin is surrounded by semi-conductive seals and a conductive housing, while the socket module has a semi-conductive outer layer, and front seals of semi-conductive material on the pin and socket modules are in sealing engagement in the mated condition, isolating the pins from sea water exposure and forming a ground plane continuation at least from receptacle to plug in the mated condition and providing shielding from phase to phase interaction in a multiple pin and socket connector.

Abstract: An implantable medical device connector assembly and method of manufacture include a molded, insulative shell having a first inner surface forming a connector bore, an outer surface defining a fill port for receiving an adhesive, and a second inner surface defining a channel extending from the fill port to the first inner surface forming the connector bore; one or more conductive members positioned along the connector bore; and sealing members positioned between the conductive members. An adhesive is disposed in the channel and seals the outer surface of the sealing member to the inner surface forming the connector bore.

Abstract: A waterproof harness connector that is simple, highly reliable, and can branch a wire. An inner holder is inserted into an outer holder from an opening, and then, joints of wire terminals, where seal members are attached to wires, are inserted into wire terminal holding holes of the inner holder through wire terminal insertion openings of the outer holder. When a pin terminal is inserted into pin terminal insertion hole of the inner holder, the pin terminal penetrates tubular contacts of the joints, which are placed in the holding hole, to electrically connect the wire terminals to each other. After that, a waterproof member is fixed to an opening to make the inside of the outer holder a waterproof structure.

Abstract: A wire connector includes first and second connecting members that are adapted to hold respectively at least one wire to be connected separably to each other, a waterproof ring, and a locking unit. The waterproof ring is sleeved on a first connecting segment of the first connecting member. The second connecting member includes a second connecting segment sleeved releasably on the first connecting segment, and a receiving segment surrounding the waterproof ring for watertight contact with the waterproof ring. The locking unit includes two engaging components disposed on the second connecting member, and two hook components disposed on the first connecting member and engaging respectively and detachably the engaging components for pulling the receiving segment toward a shoulder of the first connecting segment to cooperate with the shoulder to clamp tightly the waterproof ring therebetween, thereby securing firmly the second connecting member to the first connecting member.

Abstract: An extension cordset assembly includes a receptacle and a sealing gasket. The receptacle includes a receptacle main body, a receptacle connecting interface and first and second spade mating holes extending into the receptacle main body from the receptacle connecting interface. The receptacle is configured to mate with a plug having a standard spade configuration. The sealing gasket is positioned on the receptacle connecting interface and includes first and second spade openings aligned with the first and second spade mating holes, respectively. The sealing gasket is configured to provide a water-resistant seal between the receptacle and the plug.

Abstract: Systems and methods are disclosed that include a first registered jack and a junction coupled to the first registered jack. These systems and methods also include a first source unit connected to the junction and a first layer encasing at least part of the first registered jack, the junction, and the first source unit. In addition, these systems and methods include an o-ring preventing surrounding the first layer and a housing encasing the first layer and the o-ring.

Abstract: The invention relates to electrical connector systems, in particular for airbag ignition systems, including a first connector provided with a plug-portion and a retainer adapted to act together with the plug-portion. The retainer further comprise includes a sleeve portion which is adapted to be arranged in a mating connector socket and which is in turn adapted to receive at least a part of the plug-portion of the first connector therein. The connector system includes a first sealing member adapted to provide a sealing between the sleeve portion and inner walls of the mating connector socket; and a second sealing member, which is adapted to be arranged between the retainer and the first connector to provide a sealing between retainer and first connector.

Abstract: A power plug system for use with a submersible pump. One embodiment comprises a male plug end, a female plug end, and a plurality of seals. The male plug end comprises a housing and a conductive sleeve. The housing receives an electrically conductive cable and conducts an electric current from the cable to the conductive sleeve. The female plug end comprises a housing, a conductive pin, and a female plug sleeve. The conductive sleeve is radially sealable within the female plug end through a plug end seal of the plurality of seals. The conductive sleeve and the conductive pin are conductively connectable. The female plug sleeve is radially sealable within a complementary plug end through a female plug sleeve seal of the plurality of seals. The conductive pin conductively connects to a conductive lead of the complementary plug end with insertion of the female plug sleeve therein.

Abstract: An adjustable at least four-way electrical connector for signal, power, voice and/or data communication, comprising at least four adjustable electrical connections utilizing a ball and socket type physical connection device and including a weatherproofing gasket; also an adjustable fiber optic connection device utilizing ball and socket type construction wherein an optical fiber can be split into a plurality of optical fibers via a connection device providing for rotation and pivoting.

Abstract: A waterproof and dustproof structure is applied to a predetermined hole of a circuit board. A connection end of a connector could penetrate the predetermined hole. Moreover, the circuit board has a first surface and a second surface. The waterproof and dustproof structure can cover up the predetermined hole to isolate the first surface and the second surface. The interferences on the first surface may not move to the second surface through the predetermined hole. Therefore, when the connection end of the connector passes through the predetermined hole, the predetermined hole on the circuit board can be sealed via the waterproof and dustproof structure so as to achieve the goal of waterproof and dust prevention.

Abstract: A seal for an automatic transmission (12) having mechatronics with an electronic module (14) and an electro-hydraulic control unit. The electronic module (14), when installed, is electrically connected, via terminal connectors (20), with at least one actuator (16) and/or sensor of the electro-hydraulic control unit. The seal is inserted between the electronic module (14) and at least one actuator and/or sensor and consists of an elastically moldable soft material element (10).

Abstract: An actuator system comprising a housing (2, 19) having at least one socket (6) for the insertion of an electrical plug (7). The housing (2, 19) is provided with an arrangement which is capable of retaining an electrical plug, preferably of the Jack, DIN or Minifit type, inserted into said socket, said arrangement comprising a union nut (8) which may be retained in a position above the opening of the socket (6), and which at the same time surrounds the plug (7), said union nut (8) being rotatable between an inoperative position in which the plug (7) may freely be inserted and removed, and another position which is a locked position, in which the plug (7) cannot be inserted and, if it is already inserted, cannot be removed.

Abstract: A connector assembly of a medical electrical device includes a plurality of electrical contacts, wherein at least one contact of the plurality of electrical contacts includes an electrical coupling receptacle. The electrical coupling receptacle of the at least one contact includes a first portion, which is adapted to receive a connector element of a medical electrical lead, and a second portion, in which a part of a feedthrough member extends, and to which the part of the feedthrough member is fixedly coupled.

Abstract: A connector for an endoscope mounting a waterproof cap on a connection port for a connector having electrical connection member disposed therein in which an O ring providing waterproof characteristics by making close contact with an inner periphery of the connection port and a second seal member providing waterproof characteristics by making close contact with a front face of a rotating ring used for fixing a connector receiving part disposed on an outer periphery of the connection port are provided. The second seal member has a size which does not exceed the outer periphery of the rotating ring due to being formed in a bell shape having a flared section. A third seal member (O ring, V ring or oil seal) maintaining a watertight condition is provided between the rear end of the rotating ring and the rear member of the main body of the connector.

Abstract: A device connector producing method includes a primary molding step of forming a primary molded body (20) formed with pilot holes (24), a terminal press-fitting step of press-fitting intermediate terminals (11) into the pilot holes (24) to form an intermediate product (40), and an insert molding step of setting the intermediate product (40) in a secondary molding die (50) and forming a device connector. The primary molded body (20) includes a resin inflow opening (21) that enables resin from a gate (52) to flow through the primary molded body (20) during secondary molding, and a supporting projection (23) to contact an inner surface of the secondary molding die (50). Thus, resin flow during secondary molding is good and the intermediate product (40) will not displace.

Abstract: A grommet for an electrical connector that comprises a main insulative body that defines a longitudinal axis and at least one inner bore extending through the main insulative body along the longitudinal axis and adapted to receive a wire. The inner bore is defined by a funnel shaped entry area, a contact receiving area opposite the entry area, and an extended longitudinal sealing web that is disposed between the entry area and the contact receiving area. The extended longitudinal sealing web being configured to provide a large surface area for continuous sealing contact with the wire.

Abstract: An extension cordset assembly includes a receptacle and a sealing gasket. The receptacle includes a receptacle main body, a receptacle connecting interface and first and second spade mating holes extending into the receptacle main body from the receptacle connecting interface. The receptacle is configured to mate with a plug having a standard spade configuration. The sealing gasket is positioned on the receptacle connecting interface and includes first and second spade openings aligned with the first and second spade mating holes, respectively. The sealing gasket is configured to provide a water-resistant seal between the receptacle and the plug.

Abstract: A photovoltaic system, a terminal box and a voltage converting device thereof is provided. The terminal box and the voltage converting device have a connector plug or a connector socket, wherein said connector plug and connector socket are electrically connected by plugging. The photovoltaic system comprises a solar module, the terminal box and the voltage converting device, the terminal box and the voltage converting device being electrically connected by plugging the connector plug and connector socket, and the converting device being fixed to the solar module through a support member. With this photovoltaic system, the installation manner, which is free from conducting wires, is convenient, reliable and cost-effective.

Abstract: In a waterproof connector, an annular packing 33 is mounted on an outer periphery of a tubular fitting portion of a connector housing, and when a fitting portion of a mating connector is fitted to the tubular fitting portion, the annular packing forms a seal between the two fitting portions. An annular ridge 41 is formed on an outer periphery of the packing 33, and the annular ridge 41 is formed into a generally mountain-shape and has a pair of inclined surfaces 41a and 41b inclining respectively in opposite directions along an axis of the tubular fitting portion. An angle ? of inclination of the inclined surface 41a disposed close to a front end of the packing disposed at an insertion side of the tubular fitting portion is larger than an angle of inclination of the other inclined surface 41b.

Abstract: Connector assemblies for use with implantable medical devices having easy to assemble contacts are disclosed. The connector assemblies are generally formed by coupling a plurality of ring contacts, sealing rings, and spring contact elements together with at least one holding ring to form a connector having a common bore for receiving a medical lead cable. Contact grooves or spring chambers for positioning the spring contact elements are formed in part by assembling multiple components together. A further aspect is a provision for encasing each connector assembly or stack inside a thermoset layer or a thermoplastic layer before over-molding the same to a sealed housing.

Abstract: A water and/or airtight electrical socket for portable electronic devices includes sealing elements that are shaped like an arc, and arranged to seal only a portion of the perimeter of the socket-plug interface. When this arc element experiences pressure, it will mechanically relay the force caused by the pressure only to that section of the perimeter of the socket-plug interface that it is arranged to seal. It will not relay mechanical forces any further. This way, the mechanical effect of any extra asymmetric pressure will simply be limited to increasing the pressure of the seal in the perimeter section of that particular sealing element, thereby tightening the seal further still. This allows the socket opening to be sealed in a water- and/or airtight manner even in asymmetric pressure conditions, both when there is no plug in the socket and also when a plug is inside the socket.

Abstract: A wire coupling device which may be used joining at least a separate first wire and second wire comprising: a housing having at least a first port and a second port, each port configured to receive a separate wire; a camming member disposed between the at least first and second ports, the camming member rotatable between a first, open position and a second, closed position, where the camming member provides electrical contact between the at least first wire and second wire when in the second, closed position.

Abstract: Guide projections (58) project out from an outer peripheral surface of a wire-deriving tube (52) of a wire-side housing (51). The guide projections (58) guide a shielding tube (71) of a shielding shell (70) in position with respect to the wire-deriving tube (52). Therefore in fixing the shielding shell (70) to a connector-mounting member (40), an inner peripheral surface of the shielding tube (71) contacts the guide projections (58) of the wire-side housing (51) to fit the shielding shell (70) on the wire-side housing (51) without dislocation.

Abstract: A waterproof connector has a housing (21) with cavities (22) for accommodating terminal fittings (40). A wire insertion tube (24) is integral to the housing (21) and receives wires (41) connected with the terminal fittings (40). Rubber plugs (42) are mounted on the wires (41) for liquid-tight sealing between the outer circumferential surfaces of the wires (41) and the inner circumferential surface of the wire insertion tube (24). A back retainer (50) retains the rubber plugs (42) in the wire insertion tube (24). Engaging projections (54) project out from the back retainer (50) and engaging recesses (30) are formed in the wire insertion tube (24) to engage the engaging projections (54). Bevels (32) are formed at the inner circumferential surface of the wire insertion tube (24) along opening edges (31A) of the engaging recess (30) extending in a direction intersecting with a longitudinal direction of the wire insertion tube (24).

Abstract: A connector has a housing with a fit-on tube that can fit in a hood of a mating connector. Terminal fittings are fixed to ends of wires and are held by the housing. A sealing ring is mounted on an annular holding groove on a peripheral surface of the fit-on tube and is disposed between the peripheral surface of the fit-on tube and an inner surface of the hood to seal a gap therebetween. Engaging grooves are formed in the peripheral surface of the fit-on tube. The engaging grooves intersect the annular holding groove and are deeper than a bottom surface of the annular holding groove. Rotation-stopping projections project from the sealing ring to extend along a direction in which the engaging grooves extend and each has an engaging claw that can fit on a bottom of one of the engaging grooves.

Abstract: Multiple seals, internal to a connector block, provide for connecting an implantable medical device and an implanted cable or lead. The forces to engage sealing or releasing the seal are derived from a mechanism so they can be relaxed to permit ease of insertion or withdrawal of a lead, or can be increased to tightly seal against fluid migration, and to provide an electrical insulation between adjacent conductors of the lead and connector block. During implant of the medical device, the lead is inserted and a shaft is rotated with a tool to engage the seals. Later, the seals can be released by rotating the control shaft in the opposite direction to allow extraction of the lead from the connector block. The seals therefore are able to provide improved sealing without increasing the insertion or the extraction forces for the lead.

Abstract: A protective plug assembly for use with a USB connector. The plug assembly may be installed over a terminated USB connector and provides additional shielding for the USB connector, thereby allowing the USB connector to be used in military, aerospace, industrial or other applications in which signal degradation is a concern. The plug assembly is easily installed in the field, as the plug adapter assembly may be preassembled during manufacture. The plug assembly also provides sealing for the USB connector which allows the USB connector to be used in environmental conditions which are not conducive to the longevity of an unprotected connector.

Abstract: The invention relates to an adapter for a micro USB socket or a mini USB socket in a mobile device, wherein the adapter includes a micro USB plug contact or a mini USB plug contact. The adapter also includes a contact body which is connected to the micro USB plug contact or to the mini USB plug contact, with the contact body having at least one abutment face for resting against a surface of the mobile device, and with the contact body having at least one contact face with flat contacts.

Abstract: The present invention provides a system and method for transmitting information between a device within a housing to a second device, preferably a test or monitoring unit, outside of the housing. There are numerous issues associated with transferring information from within a sealed housing to an external device. In some cases, the use of wires inside the housing may be impractical, due to internal conditions, such as fluid flow, pressure or temperature. In one embodiment, the antenna of the external RF reading device is electrically connected to the dome of the housing. In another embodiment, the device within the housing is electrically connected to a housing component. In another embodiment, the gasket is used to pass information from within the housing to an external device.

Abstract: Disclosed herein is an electrical connector for use with an underwater electrical device. The underwater electrical device is connected to a source, such as a power source, by electrical wiring. The connector is adapted for connecting the source and the underwater electrical device without compromising the integrity of the electrical connection despite expected movement and considerable torsional forces being exerted upon the connection so made. In an exemplary embodiment, the electrical device includes internal screw threads. The connector includes an insertion member for retaining the electrical wiring. The insertion member is elastic and deformable. The connector further includes a clamping member having an external screw for compatible engagement of the electrical device internal screw threads. Finally, the connector includes a sealing member for creating a leak proof seal between the connector and the electrical device.

Abstract: Provided is a terminal device for an electric compressor in which each inputting female terminal of a cluster holding a plurality of inputting female terminals for input into an electric motor built in a compressor in a resin housing is engaged with the inner end of each sealed terminal of a sealed terminal device. The terminal device is characterized in that a resin housing storing section for storing the resin housing is formed in a compressor housing, and in that the resin housing stored in the resin housing storing section is clamped between the compressor housing and a terminal plate of the sealed terminal device mounted on the compressor housing. The terminal device can prevent coming off of the inputting female terminal and undesired positional shifting of the resin housing, and can improve its assembling ability.

Abstract: A header assembly for an implantable medical device (IMD). The header assembly includes a plurality of cavities with a plurality of insulating rings interdisposed between adjacent ones of the cavities. The cavities receive electrical contact rings. In certain embodiments, the insulating rings are formed integrally with a body of the header assembly.

Abstract: A connector assembly includes releasably mateable plug and receptacle units. At least one socket is enclosed within the receptacle unit and is aligned with at least one permeable membrane disposed in the front end of the receptacle unit. The plug unit includes a body slidably mounted within a longitudinal bore therein. At least one pin extends from the front end of the body and is aligned with at least one permeable membrane disposed in the front end of the plug unit. The plug unit is biased toward a first, de-mate position in which the body is extended rearwardly such that the pin is enclosed with the plug unit and is slidable to a second, mate position in which the body is compressed forwardly such that the pin projects through the permeable membranes of the plug and receptacle units to electrically connect with the socket.

Abstract: A connector for use underwater or in a wet or severe environment comprises first and second connector parts adapted to be interengaged to establish an electrical connection. The first connector part has at least one pin, and the second connector part has at least one electrical contact for engagement by the pin when the connector parts are interengaged. The pin comprises an axially extending electrically conductive portion and an axially extending electrically insulating sleeve around said conductive portion, and the pin is supported by and projects axially forwardly from a support whereby its insulating sleeve is exposed along a longitudinally extending portion thereof to ambient conditions when the connector parts are disengaged.