Abstract: A housing for use in motor vehicles, in particular a motor vehicle latch housing. The basic structure of said housing comprises a connecting region and a seal that surrounds the connecting region, and a connecting element that is connected to the housing interior by means of the connecting region. According to the invention, the seal is formed as a sealing grommet that engages over the connecting region and can connect to the housing.

Abstract: A plug connector to which a cable having at least one insulated conductor can be connected is provided, wherein the plug connector has a conductive rubber element with at least one conductive layer, but preferably with at least two conductive layers. The electrical connection of the conductors is realized by the conductive rubber element. The conductive rubber element can also form the plug face of the plug connector. As an alternative, the conductors can be connected to contact elements by the conductive rubber element.

Abstract: An electrical connector has a first connector housing with a first engagement head that includes a flange and an outside surface with an annular groove thereon. A first gasket is sized to fit around the outside surface of the first engagement head and abut with the flange. A second gasket is sized to fit within the annular groove of the first engagement head. A second connector housing with a second engagement head that includes a front face and an interior surface sized to fit around the outside surface of the first engagement head. The first connector housing and the second connector housing connect together such that the front face of the second engagement head compresses the first gasket against the flange of the first engagement head and forms a first seal. The second gasket forms a second seal between the outside surface of the first engagement head and the interior surface of the second engagement head.

Abstract: A corona ignition assembly including a firing end assembly and an ignition coil assembly connected by a high voltage connection is provided. The high voltage connection includes a high voltage insulator formed of silicon rubber. A shield formed of metal surrounds the high voltage insulator. The high voltage connection also includes an upper insert formed of metal connecting the shield to the ignition coil assembly and a lower insert formed of metal connecting the shield to the firing end assembly. First portions of the outer surface of the high voltage insulator adhere to the shield, the upper insert, and the lower insert, while second portions of the outer surface do not adhere to at least one of the shield, the upper insert, and the lower insert. A metal braid can be embedded in the high voltage insulator.

Abstract: A vehicle charger includes a base body, a fuse, a positive pole terminal, an elastic element, a voltage transformation unit, a negative connecting component and a front cover. An inside of the base body has an accommodating space. A front end of the base body has a fastening structure. The positive pole terminal is accommodated in the accommodating space and is connected with one end of the fuse. One end of the elastic element is connected with the other end of the fuse. The voltage transformation unit is accommodated in the accommodating space. The other end of the elastic element is connected with the voltage transformation unit. The negative connecting component is electrically connected with the voltage transformation unit. The front cover is detachably mounted to the base body. The front cover has a locking assembly. The locking assembly cooperates with and is buckled with the fastening structure.

Abstract: A customer premises network access device includes a housing and a network interface unit at least partially disposed therein, for communicating with a data network and providing access to the data network to a user. The customer premises network access device also includes a processing unit disposed in the housing and connected to the network interface unit. The processing unit is configured to determine an aggregate amount of data associated with the network interface unit over a predetermined time period, and to determine a data value based on the determined aggregate amount of data. An exterior-facing display viewable to the user from outside the housing receives the data value from the processing unit, and displays an indicium based on the display value to the user.

Abstract: A spark plug for an internal combustion engine has a cylindrical insulator, a center electrode held inside of the insulator, and, a terminal portion held inside of the insulator and electrically connected to the center electrode. The insulator has a insertion portion arranged closer to the base end side than the housing is, the insertion portion being inserted into a cylindrical plug cap. The insertion portion has a non-fit portion formed at the base end of the insulator, and, a fit portion formed to the head end side of the non-fit portion, an outer diameter of the non-fit portion being equal to or smaller than an inner diameter of the plug cap, the fit portion being fitted in the inner periphery surface of the plug cap.

Abstract: A connector kit includes a housing, a wire-mounted component, and a seal. In various embodiments, the seal is configured to be coupled to the housing and the wire-mounted component. The seal includes a single unitary body, and the seal is structured to provide a seal for the wire-mounted component and a wire to protect an interior of the connector from penetration by foreign substances.

Abstract: In an ignition coil for an internal combustion engine, a spark plug is incorporated which has an insulator including an insulator head that has no corrugation. The ignition coil has a coil body part generating high voltage and a joint part, which holds therein a conducting member electrically connecting the coil body part and a spark plug. The joint part has a plug cap into which the insulator head of the spark plug is inserted and which is formed of an elastic member having a cylindrical shape. The plug cap has a close-contact part whose inner peripheral surface is closely brought into contact with an outer peripheral surface of the insulator. The close-contact part has a tip end-side close-contact part positioned at a tip end side with respect to a middle position in an axial direction, and a base end-side close-contact part positioned at a base end side with respect to the middle position.

Abstract: It is an object of the present invention to ensure a high water-stopping property of a wire harness including a waterproofing connector section that is molded from a resin, by suppressing a variation in the outer size of a seal section of the connector section. The connector section is made from a first synthetic resin that is insert-molded with a part of a terminal fitting of the terminated electric cable used as an insert section. A water-stopping section is made from a second synthetic resin that is insert-molded with a section extending from a part of the terminal fitting to an insulation coating of the terminated electric cable used as an insert section. The seal section is made from the second synthetic resin that is insert-molded with a part of the connector section used as an insert section. The second synthetic resin is softer than the first synthetic resin.

Abstract: A semiconductor device and method of formation are provided. The semiconductor device comprises a metal plug in a first opening over a substrate. The metal plug has a contact bottom surface that is substantially convex. The substantially convex contact bottom surface has an increased contact area as compared to a contact bottom surface of a metal plug that is not substantially convex. The increased contact area decreases a resistance of the metal plug. The increased contact area requires a smaller deposition amount to form a metal plug seed layer of the metal plug than a semiconductor device with a smaller contact area. A smaller deposition amount reduces an overhang of the deposited metal plug seed layer material. A reduced overhang of the deposited metal plug seed layer material reduces pitting in a metal plug formed from the deposited metal plug seed layer material.

Abstract: A cable splice includes a casing, a jaw assembly, a biasing member, a guide, and a bullet cup. The casing has an opening and an interior cavity. The jaw assembly is positioned in the interior cavity and moveable between a loading position and a terminated position. The biasing member biases the jaw assembly towards the terminated position. The guide includes a receiving end and a shaft extending at least partially into the interior cavity.

Abstract: A corona ignition device for igniting fuel in an internal combustion engine by means of a corona discharge. The corona ignition device comprises a central electrode, an insulator into which the central electrode is plugged, a housing into which the insulator is plugged, a coil body onto which a coil from a winding wire is wound, which coil is connected to the central electrode, and a contact element that is located in a recess of the coil body and contacts the wire. It is provided that the contact element has a slot that runs in the longitudinal direction of the coil body, and the coil body has an opening in a side wall of the recess, wherein the wire is fed through the opening in the side wall of the recess and is held in the slot of the contact element.

Abstract: A spark plug connector (1) including a connector body (21) formed as an insulator having a spark plug high voltage contact (35) for producing a connection to and with a spark plug (6). The connector body (21) has a connection point (23) for receiving, mounting and/or connection of a spark plug connector (1) extending structural element (22). The structural element (22) is arranged at the junction (23) in such a manner such that the structural element (22) lengthens the connector body (21) on the side remote from the spark plug high voltage contact. The ignition cable (3) is held or guided along the length of the structural element (22) and the material of the structural element has a higher rigidity and strength and/or a lower density with at the same time less material than the material of the connector body (21).

Abstract: An object of the present invention is to provide an ignition coil for use in an internal combustion engine, offering improved water drainage performance, while achieving high waterproof performance with controlled entry of water in a plug hole. A high-voltage generating section 3 that generates a high voltage is housed inside a coil case 4. A plug hole seal 5 closes an opening in a plug hole 2 in which an ignition plug 21 is mounted. The ignition coil further includes a space portion 6 placed on an outer side portion of the high-voltage generating section 3 and an air path 9 for venting air between the space portion 6 and the plug hole 2. The space portion 9 has an open lower surface (an entirely open surface facilitates demolding).

Abstract: Some embodiments include methods of forming electrically conductive contacts. An opening is formed through an insulative material to a conductive structure. A conductive plug is formed within a bottom region of the opening. A spacer is formed to line a lateral periphery of an upper region of the opening, and to leave an inner portion of an upper surface of the plug exposed. A conductive material is formed against the inner portion of the upper surface of the plug. Some embodiments include semiconductor constructions having a conductive plug within an insulative stack and against a copper-containing material. A spacer is over an outer portion of an upper surface of the plug and not directly above an inner portion of the upper surface. A conductive material is over the inner portion of the upper surface of the plug and against an inner lateral surface of the spacer.

Abstract: A method for producing electric components (1) for high-voltage applications, in particular ignition systems. An insulator (3) is produced as a hollow body from a thermoplastic material by an injection-molding method, the electrical functional part (2) is introduced into the insulator (3), and a casting material is cast in the intermediate space between the electrical functional part (2) and the insulator (3). Also, an electric component (1) having an electrical functional part (2) and an insulator (3) for high-voltage applications, in particular ignition systems The insulator (3) preferably consists of polyphenylene sulfide having a glass fiber content.

Abstract: A spark plug connector (1) including a connector body (21) formed as an insulator having a spark plug high voltage contact (35) for producing a connection to and with a spark plug (6). The connector body (21) has a connection point (23) for receiving, mounting and/or connection of a spark plug connector (1) extending structural element (22). The structural element (22) is arranged at the junction (23) in such a manner such that the structural element (22) lengthens the connector body (21) on the side remote from the spark plug high voltage contact. The ignition cable (3) is held or guided along the length of the structural element (22) and the material of the structural element has a higher rigidity and strength and/or a lower density with at the same time less material than the material of the connector body (21).

Abstract: A device, method, and system are disclosed. In one embodiment the device includes a router to transmit data packets between multiple host controllers and one or more peripheral devices. The router can receive a data packet from a host controller and transmit the data packet to a peripheral device across a data transmission path. The peripheral device is coupled to the first data transmission path through a first universal multi-transport medium (UMTM) connector. The connector includes an optical coupling capable of transporting the first data packet within an optical signal and an electrical coupling capable of transporting the first data packet within an electrical signal.

Abstract: An ignition terminal built for connection to a spark plug or igniter includes an insulating housing composed of polyphenylene sulfide extending outward from conductive structures within the ignition terminal. The ignition terminal may be an extender that is used to move a point of connection of an ignition cable to the spark plug or igniter outward, so that such a connection can be easily made, or the ignition terminal may be at an end of the ignition cable itself that is directly connected to the spark plug or igniter.

Abstract: A spark plug wire having a first terminal and a second terminal wherein the first terminal is configured to operably couple to a distributor of a combustion engine and the second terminal operably couples to a spark plug. The second terminal further includes a housing that is generally cylindrical in shape having an upper groove and a lower groove. A first lateral ring is surroundably mounted to the housing within the upper groove. A second lateral ring is surroundably mounted to the housing within the lower groove. A first grip member and a second grip member being elongated in shape having a first end and a second end are integrally connected to the first lateral ring and the second lateral ring. The first grip member and second grip member are mounted such that they are diametrically opposed on the housing.

Abstract: A method for producing electric components (1) for high-voltage applications, in particular ignition systems. An insulator (3) is produced as a hollow body from a thermoplastic material by an injection-molding method, the electrical functional part (2) is introduced into the insulator (3), and a casting material is cast in the intermediate space between the electrical functional part (2) and the insulator (3). Also, an electric component (1) having an electrical functional part (2) and an insulator (3) for high-voltage applications, in particular ignition systems The insulator (3) preferably consists of polyphenylene sulfide having a glass fiber content.

Abstract: One object of the invention is to provide a plug cap that more reliably prevents the leakage of current by suppressing the ingress of water from a gap between a terminal body and a rubber member. A plug cap 1 includes an electrical connection portion 5 that electrically connects a spark plug to a plug cord, a terminal body 2 that is provided on the outer periphery of the electrical connection portion 5, and a cylindrical rubber member 3 which is mounted on at least one of one end portion and the other end portion of the terminal body 2 and into which the spark plug or the like is inserted. The terminal body 2 includes a one end-side insertion portion 41 which is formed at one end of the terminal body and into which the spark plug is inserted and the other end-side insertion portion 42 which is formed at the other end of the terminal body and into which the plug cord is inserted.

Abstract: A spark plug socket has an elastic base member and a contact element secured in the base member. The base member has a spark plug receptacle for a spark plug and the contact element has a contact receptacle for a terminal of the spark plug. The spark plug socket is removable in a removing direction from the spark plug. In an unloaded state of the spark plug socket arranged on the spark plug, a section of the contact receptacle engages behind the terminal of the spark plug in the removing direction of the spark plug socket. A longitudinal center axis of the contact receptacle is slanted relative to a longitudinal center axis of the spark plug receptacle. The contact element is adjustable against an elasticity of the base member such that an angle between the longitudinal center axis of the contact receptacle and the longitudinal center axis of the spark plug receptacle is reduced.

Abstract: Apparatuses and methods are provided for conductively connecting a voltage source ignition cable to a spark plug terminal. A spark plug boot assembly is provided and can include a body member, a coiled terminal, and a voltage source ignition cable. The coiled terminal can have a first end, a second end, and a middle portion and can include one or more coils that can extend to form an inner area with the coils having a varying inside diameter. The first end can be configured to receive a spark plug terminal. Also, the voltage source ignition cable can be configured to provide an additional electrical contact to the coiled terminal.

Abstract: A spark plug socket has an elastic base member and a contact element secured in the base member. The base member has a spark plug receptacle for a spark plug and the contact element has a contact receptacle for a terminal of the spark plug. The spark plug socket is removable in a removing direction from the spark plug. In an unloaded state of the spark plug socket arranged on the spark plug, a section of the contact receptacle engages behind the terminal of the spark plug in the removing direction of the spark plug socket. A longitudinal center axis of the contact receptacle is slanted relative to a longitudinal center axis of the spark plug receptacle. The contact element is adjustable against an elasticity of the base member such that an angle between the longitudinal center axis of the contact receptacle and the longitudinal center axis of the spark plug receptacle is reduced.

Abstract: A cable terminal includes: a crimped portion crimped to a cable body; an extending piece provided integrally with the crimped portion to extend forward in an insertion direction; and a conductor conducting piece provided integrally with the crimped portion to face an end face of the cable body. An end of the extending piece abuts on an inner surface of a plug cap made of an elastic body to determine a position in terms of the insertion direction. The extending piece is provided with a springy press piece that projects to a plug terminal of an ignition plug inserted into the plug cap and contacts an end face of the plug terminal. The conductor contacting piece is sandwiched between a portion of an outer circumference of the plug terminal and a core exposed from the end face of the cable body. The plug terminal is disposed to be in tight contact with the inner surface of the plug cap.

Abstract: An extension-type spark plug includes an upper terminal stud and a lower terminal stud axially spaced from one another in electrical communication with one another. An upper tubular insulator having a through cavity surrounds at least a portion of the upper terminal stud. A lower insulator constructed of a separate piece of material from the upper insulator has a through cavity surrounding at least a portion of the lower terminal stud. A spring member is disposed between the upper terminal stud and the lower terminal stud and biases the upper terminal stud and the lower member away from one another. The spring member allows the upper terminal stud to move axially under an externally applied force sufficient to overcome the bias imparted by the spring member and maintains electrical communication between said upper terminal stud and said lower terminal stud.

Abstract: The invention relates to a plug-in connector (1), designed for connecting to a glow plug in a diesel engine, having a circular cross section and a plastic base body (2) on which at least one strip contact (3, 4, 5) is coaxially mounted. According to the invention, the strip contact (3, 4, 5) has a longitudinally extending slit (36) and at least one protruding projection (21) on the base body (2), and after the strip contact (3, 4, 5) is installed on the base body (2) the projection (21) is deformed in such a way that it projects at least partially over at least one web (31 and 32, 35, 37) of the strip contact (3, 4, 5) after being deformed.

Abstract: A cable terminal includes: a crimped portion crimped to a cable body; an extending piece provided integrally with the crimped portion to extend forward in an insertion direction; and a conductor conducting piece provided integrally with the crimped portion to face an end face of the cable body. An end of the extending piece abuts on an inner surface of a plug cap made of an elastic body to determine a position in terms of the insertion direction. The extending piece is provided with a springy press piece that projects to a plug terminal of an ignition plug inserted into the plug cap and contacts an end face of the plug terminal. The conductor contacting piece is sandwiched between a portion of an outer circumference of the plug terminal and a core exposed from the end face of the cable body. The plug terminal is disposed to be in tight contact with the inner surface of the plug cap.

Abstract: The object of the invention is a contact element, in particular of ignition voltage parts in internal combustion engines, with an outer sleeve in whose inside an axially acting compression spring is provided.

Abstract: A spark plug boot having a resistive element for reducing levels of EMI. The spark plug boot generally includes a spark plug receiving end, a resistive element portion, an ignition wire connecting end, and a conductive metal shell. The spark plug boot may also include one or more elbows, which changes the positional relationship between the spark plug receiving end and the ignition wire connecting end.

Abstract: Apparatuses and methods are provided for conductively connecting a voltage source ignition cable to a spark plug terminal. A spark plug boot assembly is provided and can include a body member, a coiled terminal, and a voltage source ignition cable. The coiled terminal can have a first end, a second end, and a middle portion and can include one or more coils that can extend to form an inner area with the coils having a varying inside diameter. The first end can be configured to receive a spark plug terminal. Also, the voltage source ignition cable can be configured to provide an additional electrical contact to the coiled terminal.

Abstract: A spark plug connector, in particular for large engines, includes an inductive interference suppression device having a ferromagnetic core. The inductive interference suppression device also has at least one winding, preferably a coil, and an ohmic d.c. resistance of at least 20? at 20° C.

Abstract: An ignition coil is disclosed. The ignition coil includes an insulative material, a body, and a head coupled to the body. A portion of the insulative material is included in the body, and a portion of the insulative material is included in the head. The head includes a casing, a flange for coupling to an engine case, and a connector adapted to be connected to an external device. The head also includes a conducting terminal with a connector pin, an exposed contact, and a connecting part. The connector pin is coupled to the connector, the exposed contact is coupled to the casing or the flange, and the connecting part couples the exposed contact and the connector pin. A portion of the connecting part is embedded in the insulative material, and wherein a remaining portion is embedded in the casing. A method of manufacturing the ignition coil is also disclosed.

Abstract: An ignition spark enhancing system and devices which, in one aspect, establish the electrical path between a spark source (e.g. an ignition coil) and a spark plug, and in another aspect, between a power source (e.g. battery) and an ignition coil and, in a third aspect, between the ignition coil and the spark distributor of an internal combustion engine. The devices preferably include a coil of one or more turns or loops formed on and along a length of a small segment of hollow conductive tubing. A length of solid conductive wire is wound in tightly spaced fashion around a portion of the conductive tubing and is formed in intermittent segments which are preferably electrically coextensive with the conductive tubing. The tubing and the wire are preferably copper and also preferably form each entire spark plug and ignition coil wire. The device is also preferably coated with a non-conductive material to reduce any risk of electrical shock or short circuit.

Abstract: A connector within an igniter cable, configured for attachment to the high voltage terminal of an exciter, includes a contact terminal attached to the wire within the cable, having a number of flexible contact members to engage a pin within the high voltage terminal, and a latching sleeve, with the contact terminal and the latching sleeve being installed from opposite ends of an insulating tube. Flexible latching members of the latching sleeve engage a latching surface of the contact terminal to prevent inward movement of the contact terminal within the insulating tube when the pin within the high voltage terminal is engaged.

Abstract: An engine ground system for increasing the potential of an engine. This is an engine ground system wherein intermediate portions of a ground wire one end of which is electrically connected to the negative electrode terminal of a battery are electrically connected to engine ground points and the other end of the ground wire is grounded to the car body. The engine ground points can be an engine cylinder head, an intake manifold clamping member, a cylinder head cover, and a throttle body (7b). Further, a plug cap ground wire is connected between the plug cap clamping member and the intake manifold clamping member.

Abstract: A connecting means for ignition systems in internal combustion engines is designed such that the connecting means is functionally reliable even under unfavorable operating conditions. The connecting means has, among other things, a first connection for an ignition coil, a second connection for a spark plug, and a covering cap encasing these connections. The covering cap is made of two layers, having an inner casing made of electrically insulating material and an outer casing lying directly on the inner casing, the outer casing being made of an electrically conductive material, which is electrically connected to ground potential. The casings are each made up of a resilient material. The connecting means is for use in the automotive industry.

Abstract: An electrical spring connection assembly electrically connects a conducting case, and a spark plug. The electrical spring connection assembly includes a base having a securing aperture for receiving the conducting case therein. The base fixedly secures the electrical spring connection assembly within the conducting case. The electrical spring connection assembly also includes a leaf spring portion that extends radially out from the base for receiving the spark plug therein. The leaf spring portion creates an engagement force the spark plug must overcome to be positioned within the electrical spring connection assembly. The electrical spring connection assembly also includes a beam spring portion extending out from the leaf spring portion. The beam spring portion creates a retention force to retain the spark plug within the electrical spring connection assembly. The retention force is greater than the engagement force.

Abstract: Disclosed is an engine of a personal watercraft capable of preventing water ingress into a penetrating hole for attaching an ignition plug. The engine comprises a cylinder head, a cylinder head cover provided over the cylinder head, an ignition plug attached to the cylinder head, a penetrating hole formed to extend from an upper surface of the cylinder head cover to a lower surface of the cylinder head, for accommodating and attaching the ignition plug inside thereof, a connecting member connected to an upper end of the ignition plug and located inside the penetrating hole, for connecting a power supply to the ignition plug that activates the ignition plug, a closing member for creating a seal between the connecting member and the penetrating hole, and an air hole formed to extend obliquely downward from the penetrating hole so as to communicate with an outside of the cylinder head.

Abstract: An ignition coil includes a connecting device for contacting a spark plug of an internal combustion engine, the connecting device being designed to have a sleeve made of insulating material. The sleeve is able to be connected at a first end section to a high voltage side of the ignition coil, and at a second end section has an accommodation for the spark plug. Furthermore, in the sleeve at least one conductive contact part, touching the spark plug, is situated for the electrical connection of the ignition coil to the spark plug. At the high voltage side of the ignition coil, between it and the spark plug, a plurality of electrically conductive modular components are able to be positioned, which in the installed state are connected in a detachable, electrically conducting manner.

Abstract: A heat resistant spark plug extender is described, for joining a spark plug like ignition device to a spark plug wire. The extender includes an elongated body formed of heat resistant and electrically insulative material that extends between a spark plug engagement end and a spark plug wire connector end. A conductor is located within the body and includes a fitting, adapted to releasably electrically connect to a spark plug wire, and a receptacle, adapted for electrical connection to a spark plug. An adjustment part permits adjustable movement of the spark plug wire connector end relative to the conductive receptacle.

Abstract: A connecting means (11) for ignition systems in internal combustion engines (12) is designed such that the connecting means (11) is functionally reliable even under unfavorable operating conditions.

Abstract: An electrical connector for connecting a conductor to a terminal post advantageous for connecting to the post of a spark plug. The connector includes a cylindrical shell for surrounding the post and an inwardly extending dimple. The dimple has a ramp-like forward surface.

Abstract: An improved dielectric lubricant is prepared from a (A) a phenyl-methyl siloxane having an average general formula Me3(SiO)—(Me2SiO)x—(MePhSiO)y13 (SiO)Me3 wherein each Me represents a methyl group, each Ph represents a phenyl group, x has a value from zero to about 0.25 and x+y=1; said phenyl-methyl siloxane having a viscosity at 25° C. from about 500 to about 10,000 centipoise in combination with (B) a polytetrafluoroethylene powdered solid. The dielectric lubricant of the invention has particular utility when applied to the interface between a silicone rubber spark plug boot and spark plug.

Abstract: An electrical connector for connecting a conductor to a terminal post advantageous for connecting to the post of a spark plug. The connector includes a cylindrical shell for surrounding the post and an inwardly extending dimple. The dimple has a ramp-like forward surface.

Abstract: With two features of positive lock and self-pop-up, the invention provides simple procedure for connecting and disconnecting spark plugs and spark plug wires, a union of prevention and ensurer.

Abstract: A spark plug cap for facilitating the fitting/detaching operation of a spark plug with a built-in pressure sensor, and a method of easily fitting the spark plug with a built-in pressure sensor are provided. The spark plug cap is provided with a cylindrical part of glass-containing PBT, a grommet provided with a cable passing groove, and an ignition coil unit provided with a high voltage terminal. The cylindrical part includes a first engagement part engageable with a spark plug fastening tool on one end, a second engagement part of a metal material engageable with a hexagonal part of the spark plug with a built-in pressure sensor on the other hand, and a groove-shaped clamp part on the outer side surface. By engaging the hexagonal part with the second engagement part to attach the cylindrical part to the spark plug, holding a sensor output cable by the clamp part, and fitting and fastening the spark plug fastening tool in the first engagement part, the spark plug is fitted into an internal combustion engine.

Abstract: A plug, particularly for connecting a musical instrument, a microphone, or the like, to an amplifier, a recording device, or the like, the plug includes a central rod-shaped conductor, a mushroom-shaped part at an end of the rod-shaped conductor, a sleeve of electrically conductive material surrounding the rod-shaped conductor at a radial distance, and an insulating material separating the rod-shaped conductor and the sleeve. A cylindrical bolt is mounted at another end of the rod-shaped conductor and has two bolt portions with different diameters extending transversely of the rod-shaped conductor. The sleeve has electrically conductively connected thereto a surface portion which at least partially surrounds at a radial distance and is electrically insulated from the bolt portion having a smaller diameter.