Abstract: A combination circuit board and clamping device includes a circuit board having a conductor strip that conducts electrical voltage. A connection for a shielded cable with a device to clamp the cable sheath is provided on the circuit board. This device is in contact with the conductor strip carrying the electrical voltage. The clamp device for the cable sheath consists of a contact piece with a metallic base plate and clamp springs that project on one side and are separated from one another, between which the cable insulated up to the cable sheath is received. The circuit board includes pass-through apertures into which to insert these clamp springs, and the contact piece with the cable end secured between contact springs is attached to the circuit board by means of a cable binder, for whose proper positioning the circuit board includes openings.

Abstract: A latch mechanism for securing a battery module (70) includes a bracket (10), and a pair of latch members (50). The bracket includes a recess (18), a back plate (16) defining a pair of cutouts (162), and a pair of fixing frames (30) next to the cutouts. The latch members are slidably received in the fixing frames and each include a sidewall (52) defining a locking slot (522) therein. The battery module is slidably moved into the recess and includes a pair of hooks (74) separately extending through the cutouts of the bracket to engaging with the locking slots of the latch members.

Abstract: A connector for locate wires employs a platform which has a plurality of angularly spaced wire apertures. A conductive wire stripper member has a plurality of slots corresponding to said apertures and is angularly positionable between closed and open positions. Locate wires may be connected by inserting the wires into the apertures when the wire member is in an open position and electrically connected by angularly pivoting the conductive member to the closed position. A ground connector provides a ground connection for the connector to ground the locate wires.

Abstract: A low crosstalk transmission connector includes a housing that houses a metal spring plate, a load bar, a terminal module and a locating frame, a cable organizer, which has an axle hole that receives a 8-wire cable and 8 wire grooves that separate the 8 insulated wires of the cable, and a metal shield that accommodates the cable organizer and has a bottom clamping plate and a top clamping plate respectively hooked on the bottom and top sides of the housing to ensure high steadity. The 4th and 6th metal contact terminals and the 1st, 2nd, 3rd, 5th, 7th and 8th metal contact terminals of the terminal module have the respective front contact portions curved in two reversed directions to reduce crosstalk noise, thereby improving transmission quality.

Abstract: Contact device for electrical cable with a cable shield including an arc-shaped contact part (3) that can be secured around the sheath of a cable and is provided with contact elements that protrude in a radially inward manner. Each contact element extends to form a point such that during installation in a direction of impact that is oriented inwards and in an essentially radial manner, the point penetrates the cable sheath and produces an electrical contact with the cable shield.

Abstract: A method and apparatus for grounding cables (e.g., fiber cables or copper wire cables) used in networks such as the telecommunications networks are disclosed. For example, the apparatus comprises an enclosure having a plurality of metal posts, e.g., metallic bolts, (e.g. brass or copper) for connecting with cables and at least one grounding rod. The apparatus contains apertures for allowing cables and at least one grounding rod to be brought into the apparatus in order to reach the metal posts. The grounding rod is then connected to one of the posts, and one or more of the cables are also connected to one or more of the posts. In one embodiment, the apparatus employs a movable cover with a conducting member (e.g., a metal hinged plate) mounted onto the movable cover. In operation, the metal plate makes contact with all the posts and provides grounding to all the cables when the cover is in a closed position.

Abstract: In a structure for grounding a shielded cable, a braided wire is extended radially outwardly of core covering portions to form a flange portion, and an associated wire is connected to the flange portion by the use of sleeve members, thereby effecting the grounding.

Abstract: In a connector for connecting a thin sheet member to a mating object, a conductive shell portion collectively covering a base insulator and a cover insulator in a predetermined direction. The base insulator has a through hole penetrating therethrough in the predetermined direction. The cover insulator is cooperated with the base insulator and is for holding the thin sheet member in the predetermined direction. The shell portion has a first spring part to be brought into press contact with the thin sheet member via the through hole and a second spring part for pressing the cover insulator towards the thin sheet member.

Abstract: A grounding connector includes a base with a first crimping structure extending from the base for crimping to the cable and securing the cable relative to the base along a cable axis. A first contact member can extend from the base laterally adjacent to the first crimping structure. The first contact member can have a narrowing first cable slot for receiving the cable to engage and form electrical contact with the cable when the first crimping structure is crimped to the cable.

Abstract: A junction for joining a first section of conduit to a second section of conduit is described. The junction has a body, which has a first connecting portion for connecting a respective first section of conduit to said body and has a second connecting portion for connecting a second respective section of conduit to said body. The body defines a volume extending between the first connecting portion and the second connecting portion. The junction also has a lid which is engagable with the body and is adapted to close the aperture. The junction also has at least one earth connector which is located within the body and has at least one channel adapted to receive at least one earthed electrical cable in electrical contact with the body.

Abstract: The present invention provides a connector for an electrical cable comprising a grounding insert comprising: a bushing having a tapered forward end and a tapered rearward end, and a plurality of conductive fingers, wherein each conductive finger has a proximal end that is embedded in the tapered rearward end of the bushing and a distal end that extends from the tapered rearward end of the bushing to a contact site with a cable.

Abstract: A termination structure of a cable with a shield layer wherein a part of a jacket of the cable is removed at an end of the cable to expose a part of the shield layer and the exposed part of the shield layer is grounded to a fitting object and the cable is fitted in water-tightness with the fitting object. The termination structure has: a metallic sleeve disposed on the jacket of the cable, the metallic sleeve being covered with the exposed part of the shield layer being folded at an end of the jacket; a cylindrical metal fitting being disposed on the periphery of the folded shield layer and swaged at a fixing section corresponding to the folded shield layer to fix the cable; and a heat-shrinkable tube disposed on the periphery of the cylindrical metal fitting and the jacket.

Abstract: A flexible grounding strip includes an electrically conductive strip having an elongated base, opposite sides of which extend to respective flanges spaced from the base. Each flange extends from one side of the base and terminates at an edge generally facing the opposed side of the base. The edges are spaced from each other. Each of the opposite sides have lengthwise spaced slots extending partly across the base towards the opposite side of the base. The slots extending from one side of the base are interleaved with slots extending from the opposite side of the base.

Abstract: A shielded cable includes a cable body that is surrounded by a vacuum metallized layer. The metallized layer can be grounded with a metallized thermoform connector to prevent the release or impingement of harmful EMI radiation. Optionally, an insulating top coating can be disposed over the metallized layer over the cable body.

Abstract: An adjustable spring grounding pin for grounding separate parts of an electrical device, for example end shields and a stator of an electric motor, automatically adjusts its circumferential dimension to provide a tight grounding fit between aligned holes of different interior diameters in the end shields and the stator of the device as the grounding pin is driven into the aligned holes.

Abstract: A wireless audio transmission apparatus and method for coupling audio players to audio receivers for broadcast of audio signals stored in and processed by the audio player. A housing carrying operative circuitry is electrically connected by a multiconductor cable to an audio player for receiving stereo channel signals. Band pass filters couple the stereo signal and signal ground conductors in the cable to the stereo encoder in the housing. The filtered stereo signals are received by a stereo encoder in the housing and modulated onto a radio frequency carrier signal. A transmitter coupled to an antenna carried in the cable wirelessly transmits the carrier signal and the audio signals to a remote radio frequency receiver for demodulation and broadcast of the audio signals. Preferably, the carrier signal is an FM radio frequency signal. The carrier signal is optionally selectable from a plurality of different carrier signal frequencies.

Abstract: Lightning at or near the site of an oil storage tank can cause a charge build up in the tank. This charge must be discharged to ground at rapid speeds to prevent arcing, sparks and fire. The tank has a metal floating roof which can be used to discharge the charge to ground by connecting a low impedance braided wire to the floating roof, and then connecting the wire to a take up reel at the top rim of the tank. The take up reel keeps any slack out of the wire. The path to ground is liquid to floating roof, to braided wire, to take up reel, to wall of tank, to earth ground.

Abstract: A cable connector assembly includes a ferrule assembly configured for attachment to a cable braid, and a resilient contact element surrounding an end of the ferrule assembly. A retaining band clamps the cable braid to the ferrule assembly. A conductive shell is configured to compress the resilient contact element.

Abstract: The present invention relates to a grounding structure of an electrical connector suitable for high frequency transmitting. The high frequency connector mainly has a connecting part being combined with a plurality of grounding lines to improve the electrical characteristics of the high frequency connector when it transmits a signal. Wherein, the connecting part further comprises a wing portion and a protrusion portion; thereby the connecting part can engage the grounding terminals with the grounding line of the cable to form electrical contact.

Abstract: Each of shielding terminals is made of an electrically-conductive material, and includes a plate-shaped conducting plate portion, and a shielding shell of a tubular shape which is formed in an upstanding manner on the conducting plate portion, and is electrically connected to an electrically-conductive shielding member of a corresponding shielded wire. The conducting plate portions of the shielding terminals are held between a holder plate and an outer surface of a connector housing, and are disposed on the outer surface of the connector housing. These conducting plate portions are fixed to the connector housing by bolts and. The conducting plate portions are held in surface-to-surface contact with the outer surface of the connector housing.

Abstract: In a method of grounding a shielded wire and a structure of grounding a shielded wire, a ring portion is formed in a ring shape by leading a braided wire to or to an opposite side of an insulating outer sheath so as to be separated in an outer circumferential direction of the insulating outer sheath. With respect to an outer circumference of the insulating outer sheath, an inner circumferential cylinder is disposed at an inner circumference side of the ring portion and an outer circumferential cylinder is disposed at an outer circumference side thereof. Further, the outer circumferential cylinder and the inner circumferential cylinder are connected each other to form a sleeve fitting. With the sleeve fitting, an attached wire is connected to the ring portion, such that grounding is performed.

Abstract: An interconnect system is described herein. The interconnect system includes a module having a signal device and a ground substantially surrounding the signal device; a cable having a cable shielding to electrically couple with the ground, and a cable signal line disposed within the cable shielding to electrically couple with the signal device; and a housing assembly interposed between the module and the cable. The housing assembly includes: (a) an inner housing signal line that electrically couples the cable signal line of the cable with the signal device; and (b) a conductive housing that electrically couples the cable shielding with the ground. The conductive housing substantially surrounds and electrically shields the inner housing signal line. The signal device includes a plurality of signal pins, and the plurality of signal pins electrically couple with a pin receptor of the inner housing signal line of the housing assembly.

Abstract: A shielded cable assembly that receives a shielded cable therein and includes an isolator or spacer block having a bore and a spring having a fixed portion disposed about the isolator and a resilient portion extending into the bore. A housing retains the isolator and receives the shielded cable. The fixed portion of the spring is in pressed contact with an internal surface of the housing and the resilient portion of the spring is in pressed contact with a shield ring of the shielded cable to scrape the internal surface upon reception into the housing to remove a non-conductive oxide layer formed on the internal surface.

Abstract: A connector for providing an electrical connection to a coaxial cable, the connector comprises a base member adapted to be secured around a coaxial cable, a metal band member formed as part of the base member, and at least one protrusion extending from and unitary with the metal band member for providing electrical contact to a conductor portion of the coaxial cable.

Abstract: A ground hardware (26) is crimped to the shield layer (34) of a shield cable (30). A contact spring (6) is put in the a cord tube (5). By connecting the cord tube (5) to the plug shell (2), the contact spring (6) is brought into contact with the ground hardware (36) to electrically connect the shield layer (34) to the plug shell (2).

Abstract: An assembly of electric motor with encoder, including an electric motor having a motor housing, and an encoder for detecting the rotation angle of the output shaft of the electric motor. The encoder includes a frame member attached to the motor housing in a conductive manner, a circuit board supported on the frame member and a detection circuit provided in the circuit board. The assembly of electric motor with encoder further includes an output signal cable connected to the circuit board of the encoder and including a signal wire and a shield member, and a grounding mechanism electrically connecting the shield member of the output signal cable to the motor housing for grounding purposes. The grounding mechanism includes a conductor patterned on the circuit board, a first connecting structure mutually connecting the conductor to the shield member, and a second connecting structure mutually connecting the conductor to the frame member.

Abstract: In a shielded wire-connecting structure, a braided wire 37c of a shielded wire 37 is connected for grounding purposes to a shield shell 25 via a joint terminal 10, 15 which includes a wire connection portion 13 formed at one end thereof so as to be connected to the braided wire 37c, and a terminal mounting portion formed at the other end thereof so as to be connected to the shield shell 25. A passage hole for the passage of a fastening bolt 19 therethrough is formed through the terminal mounting portion, and the terminal mounting portions of a plurality of the joint terminals 10 and 15 are superposed together, with the passage holes communicating with each other, and are fastened together to the shield shell 25 by the fastening bolt 19 passing through the passage holes. A retaining step portion is formed at one of the terminal mounting portions which are to be superposed together, and an engagement step portion for engagement with the retaining step portion is formed at the other terminal mounting portion.

Abstract: A securing device for the adapter of a cable intermediate connector includes a holder bored with a through hole formed with a circular hole and a non-circular hole. The holder has one sidewall provided with two projecting edges to be diametrically compressed and deformed toward the through hole. An adapter has its intermediate portion formed with a circular contact surface and a non-circular engage surface. When the adapter is inserted in the through hole of the holder, the circular contact surface can closely contact with the inner wall of the circular hole, and the non-circular engage surface can be closely engaged with the inner wall of the non-circular hole, and then the two projecting edges of the holder are compressed and deformed to press tight the non-circular engage surface and fix it inside the non-circular hole.

Abstract: A flexible grounding strip includes elongated electrically conductive strip having a base extending between spaced, opposed sidewalls. At least one of the sidewalls has a flange spaced from the base and extending towards the opposed sidewall. Each of the sidewalls has a series of lengthwise-spaced slots extending widthwise across the sidewall into and at least partly across the base towards the opposed sidewall. The slot dimensions and spacing impart flexibility to enable the strip to bend transversely of its length.

Abstract: A grounding connector having at least a first layer and a second layer. A conductor, such as a grounding wire, is secured between the first layer and the second layer. The first and second layers are made of a material with the same or similar galvanic potentials as the conductor such that galvanic corrosion between the conductor and the first and second layers is minimized.

Abstract: A flat panel displaying apparatus is disclosed. The flat panel displaying apparatus includes a liquid crystal display module displaying a picture, a chassis surrounding edges of the liquid crystal display module, defining an external appearance of the flat panel displaying apparatus, a printed circuit board provided with a connector connected to an external system by a connection cable, being grounded to the chassis, a liquid crystal display controller provided in the printed circuit board, activating the liquid crystal display module, and a ground portion formed around the liquid crystal display controller. With this configuration, emission of electromagnetic waves of the printed circuit board is minimized and reliability of the product is enhanced.

Abstract: A balanced transmission cable connector with improved high speed signal transmission characteristics is realized by directly connecting a balanced transmission cable to a plug structure. The plug structure includes a block unit, a ground contact, and adjacent pairs of a first signal contact and a second signal contact. The ground contact and the adjacent pairs of the first signal contact and the second signal contact are aligned in an alignment direction with respect to one another and are held by the block unit. The ground contact is disposed in between the adjacent pairs of the first signal contact and the second signal contact. The first signal contact includes a first signal wire connecting portion to which a first signal wire of the balanced transmission cable is connected, and the second signal contact includes a second signal wire connecting portion to which a second signal wire of the balanced transmission cable is connected.

Abstract: A shield electric cable connector for electrically connecting a shield electric cable to a mate member, wherein the shield electric cable includes one terminal portion that is peeled for connecting said connector and the mate member. The terminal portion has a conductive shield layer exposed from a sheath of the shield electric cable. The connector includes a conductive shield pipe surrounding the terminal portion of the shield electric cable and a conductive shield-connecting member surrounding the shield layer between the exposed shield layer and the shield pipe, the shield-connecting member electrically connecting the exposed shield layer to the shield pipe. The shield-connecting member has a pair of halves for sandwiching the exposed shield layer from both sides in a radial direction of the exposed shield layer.

Abstract: A terminal structure of cable with shield layer has: a metal tube one end of which is inserted between the insulation and the shield layer that are exposed by peeling a jacket of the cable and the other end of which is inserted into a penetrating hole in the attached object; a metal sleeve that is disposed on the shield layer and is fastened to make the one end of the metal tube closely contact the insulation; a heat shrinkage tube that covers the metal tube, the metal sleeve and the jacket and has a hot-melt layer formed at the inside of the heat shrinkage tube; and a shield member that is disposed on the other end of the metal tube such that the shield member closely contacts the wall of the penetrating hole to give a water-tightness therebetween.

Abstract: A common ground assembly for a plurality of electrical cables with a ground strap having a plurality of cable retaining portions adapted to receive and contact the outer conductor of each electrical cable. Inwardly projecting lip edges may be formed in the cable retaining portions to retain each electrical cable within a cable retaining portion. The ground strap may be electrically isolated from surrounding structure by a support insulator and a retaining insulator with cable retaining portions adapted to further urge each outer conductor into electrical contact with a cable retaining portion. If integrated with a feedthrough in the form of a base plate with an aperture, a flange of the baseplate may support the support insulator and a fastening plate may be used to compress the retaining insulator towards the ground strap, the fastening plate dimensioned to cover the aperture.

Abstract: A shielding connector has a female and male housings (30; 60), each of which has an inner housing (31, 61) that accommodates terminal fittings (20; 25). Metal shells (50, 80) are mounted on the peripheries of the inner housings (31, 61) and electromagnetically shield the female and male terminal fittings (20; 25) when the housings (30; 60) are connected. The metal shells (50; 80) are configured to achieve secure mounting, effective shielding and a small cross section. A detector (90) is provided to ensure complete connection and is configured to prevent inadvertent separation of the housings (30; 60).

Abstract: A clip includes an integral u-shaped body of insulating material including two parallel fingers joined by a spine to define a gap between the fingers. The fingers have respective holes each sized to receive a screw, the holes being coaxial. At least one of the fingers has a projection that projects into the gap, the hole of the respective finger being contained at least partially within the projection. The body is sufficiently resilient to permit the two parallel fingers to be spread apart.

Abstract: RF emission may be reduced by providing grounding strips between optical transmitter and receiver modules in an optical transceiver package. The grounding strips includes an upper portion to fit over a top of the module, a transition portion to span a distance between the top of the module and the board, and a lower portion in electrical connection with a grounding pad on the board. The grounding strip may be substantially as wide as the module that it covers. Angled tabs may be provided to fit within registration holes in the ground pad. The grounding strip may be press-fitted onto the module or soldered. The low impedance ground strip increases the connectivity of the optical module to the board and may replace grounding leads to the external housing to reduce RF emissions.

Abstract: A grounding means (1) used in a cable assembly (100) includes a metallic shell (2), a conductive fabric tape (3) attached onto the metallic shell, and a lock member (4) encased in the metallic shell for securing the conductive fabric tape with the shell. The metallic shell defines a receiving space (24) receiving the lock member and has an inner surface (201) and an opposite outer surface (202). The conductive fabric tape covers the inner and outer surfaces of the metallic shell and extends beyond a forward end (23) of the metallic shell a predetermined length L. The lock member has a pair of ears (42) formed on opposite lateral sides thereof for engaging with corresponding cutouts (220) of the metallic shell. A number of embossments (46) are formed on the lock member for abutting against the fabric tape.

Abstract: An electromagnetic shielding structure includes a sheath wire having a conductive wire and an insulative sheath covering the conductive wire; a terminal fitting clamping the conductive wire exposed from the insulative sheath, and the terminal fitting passing through a conductive mounting member connected to ground; a molding member molded to cover the exposed conductive wire and the terminal fitting, and having a first recess and a second recess; a conductive braid having a tubular shape, and covering the sheath wire and the molding member for absorbing an electromagnetic wave generated from the conductive wire; a first sealing portion provided in the first recess so as to adhere the molding member and the insulative sheath for securing a waterproof performance; a second sealing portion provided in the second recess so as to adhere the molding member and the terminal fitting for securing an oil proof and waterproof performance; and a conductive shell covering the molding member so that the conductive braid is

Abstract: Metal shells (35) are mounted on a connector housing (33), and a screw engagement hole (57) is formed through a grounding flange portion (52) of the metal shell (35) mated with a mounting flange (44) of the connector housing (33), and a screw (37) for fastening the mounting flange (44) to a mounting wall (38) of an equipment is passed through the screw engagement hole (57). Collars (75) are fitted respectively in collar insertion holes (44a) in the mounting flange (44), and when each screw (37) is fastened, the grounding flange portion (52) is clamped between the mounting flange (44) and the mounting wall (38), and the collar presses this grounding flange against a grounding surface of an equipment.

Abstract: In a shield connection mechanism, a conductive shield member, which includes a plate member of a plate-like shape having a hole for passing a shielded wire therethrough, and a connection portion for connection to a shielding portion of the shielded wire, is contacted with and fixed to a casing of an equipment to be connected to the casing for grounding purposes and a reinforcing rib is formed on a peripheral edge portion of the shield member.

Abstract: A grounding plate (10) includes the following features: said grounding plate (10) includes in its rear portion at least one contact section (18) integrally formed with said grounding plate (10) for contacting a telecommunications rack-mount (50), said grounding plate (10) is configured essentially flat, including said contact section (18) and with the exception of comparatively short angled items (24), if any, which serve for positioning said grounding plate (10) in or on a telecommunications module (30) relative to a direction perpendicular to the sheet-metal plane of said grounding plate (10), said grounding plate (10) includes in its front portion several contact fingers (12), said grounding plate (10) can be mounted on a telecommunications module such that each contact finger (12) is in contact with a section of a contact of the module, and said grounding plate (10) can be mounted together with the module on a telecommunications rack-mount such that said contact section (18) is in contact with a mainly tr

Abstract: A bushing arrangement and method for passing an electrical cable with conductive shielding through an opening in a wall while providing protection against electromagnetic overtension and electrical interference and the like, including the placement of an electrically conductive bushing in the wall opening that is electrically connected to earth ground potential, and electrically connecting an electrically conductive tape between the electrically conducting shielding and the electrically conductive bushing so as to connect the conductive shielding to earth ground potential. The electrically conductive tape is made electrically conductive by the use of carbon black particles.

Abstract: The present invention relates to an electronic connector for a cable.

Abstract: A terminal structure of cable with shield layer has: a metal tube one end of which is inserted between the insulation and the shield layer that are exposed by peeling a jacket of the cable and the other end of which is inserted into a penetrating hole in the attached object; a metal sleeve that is disposed on the shield layer and is fastened to make the one end of the metal tube closely contact the insulation; a heat shrinkage tube that covers the metal tube, the metal sleeve and the jacket and has a hot-melt layer formed at the inside of the heat shrinkage tube; and a shield member that is disposed on the other end of the metal tube such that the shield member closely contacts the wall of the penetrating hole to give a water-tightness therebetween.

Abstract: A grounding means (1) used in a cable assembly (100) includes a metallic shell (2), a conductive fabric tape (3) attached onto the metallic shell, and a lock member (4) encased in the metallic shell for securing the conductive fabric tape with the shell. The metallic shell defines a receiving space (24) receiving the lock member and has an inner surface (201) and an opposite outer surface (202). The conductive fabric tape covers the inner and outer surfaces of the metallic shell and extends beyond a forward end (23) of the metallic shell a predetermined length L. The lock member has a pair of ears (42) formed on opposite lateral sides thereof for engaging with corresponding cutouts (220) of the metallic shell. A number of embossments (46) are formed on the lock member for abutting against the fabric tape.

Abstract: A cable end connector assembly (100) comprises a Serial ATA cable end connector (1), a IEEE 1394b cable end connector (2), and a cable (3) inter-connecting the Serial ATA cable end connector and the IEEE 1394b cable end connector. The Serial ATA cable end connector includes an insulative housing (10), and a plurality of contacts (11) retained in the housing. The IEEE 1394b cable end connector includes an insulative housing (20), and a plurality of contacts (21) retained in the housing. The cable inter-connects the Serial ATA cable end connector and the 1394b cable end connector, the cable comprises, on a portion thereof, a metal braid (303) divided into a number of parts each soldered to a corresponding contact (11) of the Serial ATA.

Abstract: A ground connector implemented as a modified lug on a flexible ground lead allows the convenient termination of a solid ground wire at a cable shield ground clamp. The ground wire and ground clamp are electrically and mechanically attached at the modified lug. The flexible ground lead carries the combined ground connection to a common ground point within an enclosure.

Abstract: An RCA plug connector includes an annular outer ground sleeve, an insulating ring within the sleeve, and an elongated signal probe member having an exterior spring, including a plurality of circumferentially spaced bowed portions extending from within the insulating ring along the central axis. The connector has an elongated base having front and back ends, a throughbore, and a counterbore at the front end. The probe is a rigid, elongated core having a back end within the base and a front end extending from the base along the axis. The spring surrounds the core, with a front end adjacent the front end of the core and a back end adjacent the back end of the core. The ground sleeve has a back end situated in the counterbore at the front end of the base, rigidly engaging the base, and a front end that projects forward from the front end of the base. The insulating ring is situated within and rigidly engages the sleeve.