Abstract: A metal-fixing material feedthrough for at least one of an airbag igniter or a belt pre-tensioner includes a main body having a through opening formed therein and at least one metal pin fused into the through opening in a vitreous or glass ceramic fixing material. A surface of the vitreous or glass ceramic fixing material is a freely fused surface and lies in a same plane as an end face of the at least one metal pin.

Abstract: An image forming apparatus including an electrode pair including two electrodes facing each other; a powder container interposed between the two electrodes and including a storage medium that is communicably coupled to the image forming apparatus; a capacitance detector configured to detect capacitance between the two electrodes; a powder container mounting determiner configured to determine whether the powder container is mounted to the image forming apparatus based on the capacitance, upon detecting that communication is not possible between the image forming apparatus and the storage medium; and an image forming execution controller configured to cause the image forming apparatus to execute image formation, upon determining, by the powder container mounting determiner, that the powder container is mounted to the image forming apparatus.

Abstract: An electromagnetic relay includes a movable iron core arranged to move up and down within a center hole of an electromagnet unit formed by winding a coil, and a contact switch where an upper end surface of the movable iron core attaches to and detaches from a lower end surface of a fixed iron core arranged in the center hole according to magnetization and demagnetization of the electromagnet unit and a movable contact attaches to and detaches from a fixed contact by a movable shaft which reciprocates along with the movable iron core where the movable iron core includes a sliding portion which always abuts an auxiliary yoke disposed within a yoke, and where a height dimension of the sliding portion is at least equal to or larger than a plate thickness dimension of the yoke.

Abstract: An electromagnetic device includes: a fixed iron core; a movable iron core which is disposed to face the fixed iron core and which is displaceable in an axis line direction of the drive shaft; an electromagnetic coil; a permanent magnet which retains the movable iron core at the advanced position; supporting posts which are provided parallel to the axis line direction on both side surfaces of the fixed iron core and support the fixed iron core; an opening-side plate which is provided at one end portion of the supporting post; and a closing-side plate which is provided at the other end portion of the supporting post, wherein the advanced position of the movable iron core is restricted by the fixed iron core and the retreated position is restricted by the opening-side plate.

Abstract: A permanent magnet is pivotally mounted in a top spacer layer of a switching device and rests on a flex arm created in an underlying flex circuit layer. The underside of the flex arm rests on a thin bar formed in a lower spacer layer beneath which lies a base layer including an electromagnet. Activation of the electromagnet causes rotation of the flex arm to thereby close and open electrical contacts formed respectively on the underside of the flex arm and on the top surface of the base layer.

Abstract: The invention relates to a toe-in actuator (16), in particular a relay for an electric starter device (10) for internal combustion engines, said toe-in actuator providing a movable armature (168) and an armature return element (171) in a housing (156). The armature (168) is split into at least two armature parts (216, 218), and at least one damping element (220, 220a, 220b, 220c, 220d) is provided between the at least two armature parts (216, 218).

Abstract: An electromagnetic switch for a starter. The electromagnetic switch includes a cylindrical slidable member that is separate from a plunger, loosely encompasses an outer circumferential periphery of a plunger rod, and is axially movable integrally with the plunger. Whether the solenoid is in its active or inactive state, the slidable member is at least partially axially inserted into an inner circumferential periphery of a cylindrical bore and an outer circumferential periphery of the slidable member is entirely circumferentially in sliding contact with the inner circumferential periphery of the cylindrical bore.

Abstract: Systems and methods provide a magnetic actuator having more than one air gap. After the trip unit is triggered, a first armature is accelerated to quickly close a first air gap and then mate with a second armature. The first and second armature then move toward a core to close a second air gap and reach the final combined armature position, causing a contact to open. A faster reaction time is provided, yet without increasing the number of turns of the trip coil winding, and provides a more efficient actuator.

Abstract: A electromagnetic relay including a plate-shaped pivoting piece (32), one end of which is supported in cantilever state, pivoted by a movable block (40), which reciprocates in the up-down direction on the basis of excitation and demagnetization of an electromagnet block (20) housed within a housing (10, 50), and causes a movable contact (34) formed on the other end of the plate-shaped pivoting piece (32) to make/break contact with an anchored contact (36) formed on the tip section of an anchored contact terminal (35). In particular, the one-end section of the plate-shaped pivoting piece (32) is supported pivotably in cantilever state by the upper end section of a movable contact terminal (31), with a support spring (33) comprising a conductive sheet spring material interposed therebetween.

Abstract: An object of the present invention is to provide a contact switching device that has small hitting sound during operation and is excellent in impact resistance. For this, there is a contact switching device in which a movable iron core (142) provided at one end portion of a movable shaft is attracted to a fixed iron core, based on excitation and degauss of an electromagnet portion, by which the movable shaft reciprocates in a shaft center direction, and a movable contact of a movable contact piece arranged at another end portion of the movable shaft contacts and departs from a fixed contact. Particularly, the movable iron core (142) has a cylindrical outer circumferential portion (142a) and an annular attracting and sticking portion (142b), and a ratio between an inner diameter and an outer diameter of the cylindrical outer circumferential portion (142a) is 77% or less.

Abstract: A permanent magnet is pivotally mounted in a top spacer layer of a switching device and rests on a flex arm created in an underlying flex circuit layer. The underside of the flex arm rests on a thin bar formed in a lower spacer layer beneath which lies a base layer including an electromagnet. Activation of the electromagnet causes rotation of the flex arm to thereby close and open electrical contacts formed respectively on the underside of the flex arm and on the top surface of the base layer.

Abstract: The disclosed concept provides for an operating mechanism in a overload relay assembly having a solenoid with a permanent magnet. The solenoid includes a ferrous output member. The solenoid moves the output member between a first retracted position and a second extended position. When the output member is in the first retracted position, the permanent magnet maintains the output member in the first retracted position. Thus, in a system wherein the overload relay assembly interrupts power to its own operating mechanism solenoid, the permanent magnet maintains the output member in the first retracted position even when the solenoid is de-energized.

Abstract: The disclosed concept relates to an overload relay and, more specifically, to an overload relay switch having a reduced number of components and less complex components. The reduced number of components includes the lack of a return spring on the manual actuators. Further, the relay switch member, which was typically a snap switch conducting member structured to change its configuration, is a substantially flat blade. Further, a circuit is used to detect an over-current condition and a solenoid actuates the relay switch assembly, thereby eliminating the need for a mechanical over-current detection and switch actuation device.

Abstract: The invention relates to a relay (16), especially for electrical starting devices for internal combustion engines. The relay (16) comprises a relay armature (168) and an armature return element (171). A fluid, enclosed in a hollow space (236, ?s), between the relay armature (168) and the armature return element (171) pneumatically damps the collision between the relay armature (168) and the armature return element (171).

Abstract: A micro-electromechanical systems (MEMS) relay includes a switch with a first contact region and a second contact region that are vertically separated from each other by a gap. The MEMS relay requires a small vertical movement to close the gap and therefore is mechanically robust. In addition, the MEMS relay has a small footprint and, therefore, can be formed on top of small integrated circuits.

Abstract: A switching device structure having a top layer and a bottom layer, each layer comprising a body of magnetizable material, such as permalloy, disposed within a coil wherein an armature is suspended in a cavity between the top and bottom layers, the armature having ferromagnetic material disposed on a top and bottom surface thereof. Each body of magnetizable material may be pulsed by its respective coil to switch it from a magnetic state to a non-magnetic state and then subsequently pulsed by the coil to switch it from the non-magnetic state to a magnetic state.

Abstract: A polar electromagnet device has a drive shaft comprising an axis center supported so as to reciprocate in an axis center direction at a center hole of a spool wound with a coil, and a movable iron core attached to a lower end of the drive shaft on the axis center. The drive shaft is reciprocated with the movable iron core which reciprocates based on excitation and demagnetization of the coil. A permanent magnet is integrally arranged at the movable iron core on the same axis center.

Abstract: An image sensor unit includes a fixed substrate, a movable substrate, an actuate section including an actuator for moving the movable substrate against the fixed substrate, an image sensor having an imaging surface on a front surface of the image sensor, and at least, a part of a rear surface of the image sensor being directly fixed onto the movable substrate, an external electrical connecting member for conducting a transmission and reception of signals between the actuate section and the image sensor and an outside of the image sensor unit, and an internal electrical connecting member electrically connects the actuate section, the image sensor and the external connection wiring, wherein the actuate section, the image sensor, the internal connection wiring and a part of the external connection wiring are sealed into the same space.

Abstract: With variable airgap reluctance actuators problems arise due to the relationship between actuator mass and displacement range. By providing opposed surfaces in the actuator stator core and armature which have undulations typically in the form of grooves, slots and projections, a greater displacement range can be achieved whilst maintaining performance above a rated displacement force characteristic. In such circumstances by establishing a necessary rated displacement force characteristic, an actuator can be tailored and designed to meet that characteristic over a desired displacement range which has significantly less mass in comparison with a prior actuator arrangement having flat surfaces.

Abstract: A micro relay includes a magnetic member and a permanent magnet in addition to a main substrate, a stationary contact, an armature and a coil. The magnetic member includes a core located in a first though hole of the main substrate. The permanent magnet is located at an end of the magnetic member or at a place within the magnetic member. The main substrate has a plurality of laminated layers. The coil is formed of a plurality of planer coils connected in series. The plurality of planer coils are formed on the plurality of laminated layers, respectively and are located around the core.

Abstract: The invention relates to a magnetic actuating device containing a reference element and an adjusting element which is movably disposed between first and second end positions with respect to the reference element. The reference and/or adjusting elements contain a magnetizable material. A drive coil is provided for generating a magnetic field that moves the adjusting element from the first to the second end position. A mechanical clamping device is provided for producing mechanical forces that move the adjusting element from the second to the first end position. A fixing device is provided with a permanent magnet for generating a holding force fixing the adjusting element in the second end position with respect to the reference element. The fixing device contains a fixing unit separated from the adjusting element and provided with the permanent magnet.

Abstract: An electromagnetic switching device is disclosed with an electromagnet and a movable magnet armature, which is mounted in the switching device with a resetting force, which counteracts the closing force, is different than zero in an OPEN position and is formed at least partially by a magnet arrangement with at least one permanent magnet. The magnet arrangement is arranged fixed in position in the switching device outside the magnetic circuit formed from the electromagnet and the magnet armature, and whose resetting force, which acts on the magnet armature, is at a maximum in the OPEN position.

Abstract: A switching device has a magnetic tripping arrangement which includes at least one armature, a coil a yoke, and a yoke sleeve which is formed by at least one first bent part. The armature and the yoke sleeve are hereby arranged in a substantially flush manner, with the coil being arranged substantially around the armature and/or the yoke sleeve. The yoke is arranged about the coil, and the armature is formed for at least indirectly tripping a disconnecting apparatus of the switching device.

Abstract: An electromagnetic drive unit is disclosed, including a yoke and a movable armature. In at least one embodiment, the yoke and the armature have a matched shape so that, when the electromagnetic drive unit is activated, the armature is adapted to at least partially cross the yoke. An electromechanical switching device is also disclosed.

Abstract: An electromagnet device has a movable iron piece having an end that is operable to contact and separate to and from a magnetic pole portion of an iron core. The movable iron piece rotates based on magnetization and demagnetization of a coil wound around the iron core. A tapered surface is formed on at least one end of an attraction surface of the movable iron piece, which attracts to and separates from the magnetic pole portion of the iron core. At least one contacting portion that is in flush with and continuous to the attraction surface and in contact with the magnetic pole portion of the iron core is arranged in a projecting manner on the tapered surface.

Abstract: An electromagnetic relay has a solenoid formed from a wound coil, a movable contact-point block having a movable iron core, an insulation holder integrated with the upper end portion of the movable iron core and a movable contact piece which is biased toward and supported by the insulation holder through a contact pressing spring, and a fixed iron core fitted in a through hole in a yoke. A restoring spring is inserted into an axial hole of the solenoid. The movable iron core of the movable contact-point block is slidably inserted into the axial hole of the solenoid from thereabove. The fixed iron core is inserted into the axial hole from therebelow. The movable iron core is adapted to be slid into the axial hole based on the magnetization force and the demagnetization of the coil to move the movable contact-point block back and forth.

Abstract: In order to provide an electromagnetic relay in which mold manufacturing and assembling work are easy, the electromagnetic relay comprises: a base 10; an electromagnetic block 20 mounted on the base 10, in which one end portion of an iron core 30 around which a coil 21 is wound serves as a magnetic pole portion 31, and the other end portion 32 is caulk-fixed to an L-shaped yoke 40; a movable iron piece 50 rotatably supported on the yoke 40 through an L-shaped hinge spring 60, whose horizontal portion 61 is inserted between an upper surface of the base 10 and a bottom surface of the yoke 40, and facing the magnetic pole portion 31 of the iron core 30 so as to be able to be contacted with and separated from the magnetic pole portion 31 of the iron core 30; and a card 80 making a reciprocating movement based on rotation of the movable iron piece 50; and a contact mechanism portion 70 formed on the base 10 and driven by the card 80.

Abstract: An electromagnetic switching device is disclosed with an electromagnet and a movable magnet armature, which is mounted in the switching device with a resetting force, which counteracts the closing force, is different than zero in an OPEN position and is formed at least partially by a magnet arrangement with at least one permanent magnet. The magnet arrangement is arranged fixed in position in the switching device outside the magnetic circuit formed from the electromagnet and the magnet armature, and whose resetting force, which acts on the magnet armature, is at a maximum in the OPEN position.

Abstract: A silent electromagnetic relay in which a predetermined degree of silencing effect can be maintained regardless of a change to the specification, a higher silencing effect can be obtained at the time of return, the parts control is easy, and the cost of manufacturing is low. A first silent spring is mounted in a position of an inward face of a moving iron to be attracted to an iron core of an electromagnet portion, and an L-shaped moving iron turning based on excitation and demagnetization of the electromagnet portion is housed in a housing that is a resin molded product. Furthermore, a second silent spring for coming in contact with an inner face of the housing is mounted to an outward face of the moving iron and on an opposite side to the first silent spring.

Abstract: An armature for a magnetic system of a switchgear, produced in the form of a one-piece sintered part, whose free design makes it possible to easily optimize the flux and mass and reduce production costs. The armature an H-shaped profile with lateral, plate-shaped pole faces which are interconnected by a central segment that guides the flux above and beneath a through-hole.

Abstract: Electromagnetic switching device including a movable contact-holder fitted with a set of contact bridges bearing movable power contacts that operate in conjunction with fixed contacts, and an electromagnet composed of a coil, a fixed framework and movable framework. The movable contact-holder includes an assembling device including at least one elastic clipping foot for fastening the movable contact-holder of the electromagnet to the movable contact-holder, characterized in that the assembling device is equally suitable for direct and indirect assembly of the movable framework onto the movable contact-holder according to the type of movable framework used in DC or AC electromagnets.

Abstract: A relay of the present invention comprises a coil plate 30 having at least one layer of spiral flat coil 36a-36d formed around each of a pair of holes 32, 33 and fixed contacts 23a, 24a and movable contacts which are opposed to each other contactably and separably via the holes 32, 33 in the coil plate 30. The fixed contacts 23a, 24a are provided on one side of each of a pair of flat core blocks 21, 22 juxtaposed and insulated from one another. The movable contacts are provided on one movable contactor 43 which is supported so as to be drivable along a direction of plate thickness via at least one hinge portion 42 extending from a support member 44 for a movable contact plate 40.

Abstract: An electromagnetic switching device (2) with restricted guidance, in which the closure contacts do not come into contact when the break contact is welded or fixed. An elastically resilient transmission lever (10) is provided to establish the effective connection between the armature (8) and the contact support (12) extending at a distance from and parallel to the armature.

Abstract: A high energy transfer relay includes a housing, a solenoid, a pivot arm, a stationary contact, a switching contact and a leaf spring. The switching contact is mounted on the leaf spring. The armature of the solenoid is coupled to the pivot arm such that when the solenoid is energized, the pivot arm moves in the direction of the stationary contact. Movement is against the force of the leaf spring which is positioned to bias the pivot arm away from the stationary contact against a stop. The leaf spring also pre-loads the pivot point. In addition, the resilience of the leaf spring cushions the impact of the switching contact on the stationary contact to help prevent contact bounce. The outer end of the pivot arm includes a flat that coacts with a flat wall to form an air cushion. The air cushion also assists in preventing contact bounce by absorbing the momentum of the pivot arm after the contacts mate.

Abstract: An electromagnetic relay according to the present invention is applicable, for example, to a flasher relay to be mounted in automobiles, autobicycles or the like. When a driver of the automobile turns on the switch for the winker, the winker lamp is turned on and off and at the same time, a sound is generated to inform the driver of the fact that the winker lamp is being operated.

Abstract: An electromagnetic relay includes a cylindrical bobbin around which a coil is wound, and a step is formed at a middle portion of the cylindrical bobbin. A large-diameter portion is formed at one side of the step, and a smaller-diameter portion is formed at the other side of the step. The outer and inner diameters of the smaller-diameter portion are smaller than those of the large-diameter portion. An armature and a leg of a yoke are inserted in the large-diameter portion, and the armature is inserted in the smaller-diameter portion. The inner diameter of the large-diameter portion corresponds to a total sum of a thickness of the armature, a thickness of the yoke, and a moving stroke of the armature, and that of the smaller-diameter portion corresponds to a total sum of the thickness and the moving stroke of the armature. The coil is wound around the outer surface of the bobbin.

Abstract: A magnetic trip unit for molded case circuit breakers includes a pair of U-shaped magnets opposedly arranged around a part of the circuit breaker load strap and the armature strap. Circuit current in excess of a threshold value displaces the armature strap, causing it to articulate the circuit breaker operating mechanism to interrupt the circuit current.

Abstract: A relay includes a coil body having a pair of flanges, a U-shaped core yoke, a flat armature, and at least one cooperating contact element anchored in the coil body. An angled leaf spring is secured to the armature, the leaf spring having an extension forming a contact spring and being simultaneously secured to said yoke by a U-shaped adjustment piece which serves as a bearing spring for the armature. All terminal elements are formed as tabs and are conducted downwardly out of the relay in a common plane perpendicular to the plane of integration of the relay so that an extremely narrow structure is provided.

Abstract: A magnet piece and armature are arranged around a circuit breaker load strap having a bimetal strip attached thereto. The magnet piece is formed in a U-shaped configuration and is attached to the load strap. A corresponding U-shaped armature is pivotally mounted to the magnet piece in a partially overlapping relation. The U-shape armature presents a larger magnet pole surface to the magnet piece for enhanced magnetic interaction.

Abstract: An electromagnetic relay has a coil body with a core yoke formed from flat stock with a core leg extending through the coil body. A yoke leg, also formed from the same piece of flat stock, is disposed over or next to the coil in a plane which is at a right angle relative to the plane of the core leg. An armature is disposed at the free end of the yoke leg, forming a working air gap with the free end of the yoke leg and being mounted for movement on a leaf spring pivotable about a bearing location. The free end of the armature forms the contact spring which cooperates with a stationary contact element. A connection element functioning as a terminal is also integrally formed from the same piece of flat stock. Additional coil connection elements are secured in the coil body by being plugged therein. The relay assembly is mounted on a base which forms a portion of the housing in combination with a cap placed over the base covering the assembly.

Abstract: The present disclosure refers to a miniature relay with a spring bracket serving for mounting a magnet coil and spring contact bank. The base of the spring bracket is provided with plug or solder connections towards the outside, with a view to providing the most compact construction possible with a simultaneous, far-reaching separation of plug or solder connections for the coil winding and a contact bank. It is also within the context of the present invention that the longitudinal axis of the magnet coil is arranged perpendicularly to the longitudinal axis of the spring contact bank.

Abstract: Reduced base plate dimensions are provided for an electromagnetic relay of the kind having a flap type armature by disposing the core which carries a spool and the winding therein perpendicular to the base plate with its free end spaced from the base plate sufficiently for the armature to swing between the free end of the core and the base plate, while being hinged in a seat at one end of the armature provided in the magnet yoke. Support for the magnetic system of the relay, which like the base plate assembly is a preassembled unit is provided by anchoring portions (29) of the magnet yoke which lie against the armature seat and are so set in the base plate when the two subassemblies are put together, that the free end of the core is in the position described. A leaf spring carrying the switch contact as an aperture stamped out in it for centering the armature. The switching path connections are very short and various details are provided to simplify assembly and adjustment of the relay in mass production.

Abstract: An electromagnetic relay having a dual acting armature has a U-shaped armature with two divergent legs. The armature is pivoted on one of the legs with the pivoted leg being arranged adjacent to an electromagnetic field producing structure including an electrically energizable coil. A first movable electrical contact carrying means is arranged to cooperate with a first one of the legs of the armature to produce a motion of a first electrical contact between a first and a second position in response to an energized and a non-energized state of the coil, respectively. Concurrently, a second movable electrical contact carrying means is arranged to cooperate with the other or second leg of the armature to produce a motion of a second electrical contact between a first and a second position in response to an energized and deenergized state of the coil, respectively. The coil is located in the bight of the U-shaped armature with the pivoted first leg being urged by a spring away from the coil.

Abstract: A relay structure advantageous for compacting purpose is disclosed herein. The relay comprises a generally L-shaped yoke having an upright yoke leg and an upper yoke member extending substantially at a right angle thereto, the upright yoke leg being connected to one end of the core of an energizing coil which extends substantially in parallelism with said upper yoke member. The upper yoke member is formed with a center slot extending longitudinally thereof to be open at both longitudinal ends. A generally L-shaped armature is hingedly supported onto the free end of the upper yoke member with a tab extending across the air gap defined between the free end of the upper yoke member and the opposite end of the core. Extended from the upper end of the tab is an actuator arm which is received in said slot and on which overlies a spring blade carrying at its free end a movable contact.

Abstract: An electromagnetic miniature relay of a narrow structure characterized by a flat core being embedded in a body and extending outside of the ends of the coil to form pole pieces, a stationary contact element being embedded in the body adjacent each of the pole pieces, a flat armature extending parallel to the flat coil and having ends forming air gaps with the pole pieces, said armature carrying flat spring-like contact portions secured to the center of the armature and engaging the stationary contacts when the coil is energized to attract the armature into contact with the pole pieces.

Abstract: In an electromagnetic relay, a bridge contact arrangement whereby cooperating contact elements are disposed in one common plane lying next to one another. One of the cooperating contact elements angularly cantilevers over the free end of the other, shorter cooperating contact element with a cross-leg. In this manner the contact element can be provided with contact pieces aligned and properly spaced with one another. An armature-carried contact bridge spring serves to engage the contact pieces of the contact elements with equal contact pressure. The invention construction offers a simplified, reliable relay manufacture.

Abstract: A compact, flexible relay with plunger-type armature is provided. Relay configurations ranging from single-pole, single throw to double-pole, double-throw may be provided on the same base, using standardized components. A plurality of the relay terminals are placed in a stacked arrangement, including intermediate insulators, for minimizing the use of space transverse to the plunger armature. The terminals are integrally formed to include a plate portion for positioning parallel to the base and a depending blade portion extending transversely thereto for external electrical connections. Some of the terminals are included in the electromagnetic circuit. In a particular configuration, a double-pole, double-throw relay suited for dynamic braking of a motor is conveniently provided employing the stacked arrangement of terminals and several standardized components.

Abstract: A relay with plunger-type armature includes a resilient contact support, such as a conductive leaf spring, supported by a terminal in a manner affording substantial attenuation of contact bounce when engaged by an armature-mounted contact. Provision is made for insuring separation of the contacts upon reverse displacement of the armature. Specifically, a leaf spring may be fixed at one end to the base of a channel formed in the surface of a terminal plate. An overlying apertured insulator preflexes the spring and limits its displacement in the reverse direction. In a double-throw relay, the other "stationary" contact may be mounted on a resilient support, such as another leaf spring, for providing contact bounce suppression there as well.

Abstract: An improved low cost relay which comprises a one-piece spool/base, a one-piece core/terminal and a one-piece yoke/armature (yokarm). A coil wound on the spool has one of its leads led to a wire which passes through the hollow stem of the spool for contact with the core upon its insertion into the stem. The stem also retains the yokarm in position with respect to the core and spool. A contact area on the yokarm moves against a contact area on a press-fit terminal mounted in the base with excellent wiping action. The other coil lead is led to a second wire mounted in the spool, and which is captured by a lanced split in a further terminal, which is also a press-fit in the base. A suppressor diode is received in the base and has one of its leads captured by the further terminal when inserted into the base, and its other lead received and captured between the yokarm and the base when the core/terminal is inserted. A backstop for the yokarm is provided by a cover for the device which is mounted on the base.

Abstract: In an air break contactor, the armature comprises a first lamination and two second laminations, the first lamination having at a lower end an extension projecting at a 90.degree. angle with respect to the body of the lamination into a space between the bottom wall of the housing and the free end of a lower leg of the magnet assembly core member. The entire armature rests on an elbow of the lamination extension, while the second laminations are disposed between a pair of tabs extending from respective lateral edges of the first lamination.