Abstract: A tool having a working piston that moves along a working axis, a drive, for driving the working piston along the working axis, the drive having an electrical capacitor, a squirrel-cage rotor arranged on the working piston and an excitation coil, wherein current flows through the coil during rapid discharge of the capacitor and generates a magnetic field that accelerates the working piston, the tool having a frame of a soft-magnetic and electrically conducting material surrounding the excitation coil and extending in a circumferential direction with respect to the working axis, the frame having one or more at least partial interruptions, which extend over a significant part of a radial extent of the frame with respect to the working axis.

Abstract: An electromagnetic actuator. The electromagnetic armature includes: an armature movable in an axial direction in an armature space; a magnetic coil for generating a magnetic field to move the armature; an operating element motion-coupled to the armature; and a flux-directing part, disposed at an axial end of the magnetic coil, having a recess which extends in the axial direction and in which the operating element is displaceably disposed, the flux-directing part being embodied in two parts. The flux-directing part is embodiment in two parts from a base part facing toward the armature and a top part facing away from the armature. The operating element is mounted, displaceably in the axial direction, in a first bearing point embodied on the top part and in a second bearing point embodied on the base part.

Abstract: The present disclosure relates to a low friction bearing liner for a solenoid that may include a core layer, a first outer layer overlying a first surface of the core layer, a second outer layer overlying the first outer layer, a first inner layer overlying a second surface of the core layer that is opposite of the first surface of the core layer, and a second inner layer overlying the first inner layer. The first outer layer and the first inner layer may include a fluoropolymer material and may have a melt flow rate of at least about 2 g/10 min at 372° C. The second outer layer and the second inner layer may include a fluoropolymer material distinct from the fluoropolymer material of the first outer layer and may have a surface coefficient of friction of not greater than about 0.2.

Abstract: Magnetic latching valves for a vehicle engine have a housing having a first port and a second port in controlled fluid communication with one another. The housing encloses a linearly translatable armature seated within a solenoid and connected to a primary poppet valve. The armature is movable between an open position and a closed position, respectively, after a pulse of voltage to the solenoid and is in an unpowered state thereafter. A permanent magnet is fixedly seated in a position to magnetically latch the armature in a fully open position. A spring is seated to bias the primary poppet valve closed when the armature is in the closed position. The spring has a spring rate that mechanically relieves pressure by opening the primary poppet valve a distance less than the fully open position when the spring force is exceeded, thereby also allowing flow in the primary flow direction.

Abstract: An electric carpet stapler comprises a trigger and switch assembly that has an actuation caused by a change of state of a sensor, which causes the sensor to send a signal to a control circuit to begin a process to supply power to a winding. The trigger and switch assembly includes a trigger that moves in a trigger actuation direction to move a sensor actuator in a sensor actuation direction, causing a change of state in the sensor, which causes the control circuit to begin the process to supply power to the winding. The trigger and switch assembly may also include a toggle. At the actuation of the trigger and switch assembly, the toggle creates a mechanical instability, and a toggle signal to the user, which may be produced mechanically.

Abstract: An actuation module may comprise a housing, a solenoid operated valve solenoid operated valve disposed in the housing, a diode disposed in the housing, a silicon bilateral voltage triggered switch thyristor disposed in the housing and electrically connected to the solenoid operated valve, and an output connected to the solenoid operated valve. A method may comprise connecting an actuation module to a production tubing valve, connecting the actuation module to a valve control system, connecting an information handling system to the valve control system, controlling the actuation module with the valve control system, and activating the production tubing valve with the actuation module.

Abstract: A solenoid valve comprising a valve portion and a solenoid portion. The valve portion has a pin, the pin having a groove. The solenoid portion has an aperture configured to receive the pin. A resilient locking device is located in the aperture, the resilient locking device configured to engage the groove when the pin has been inserted into the aperture to releasably hold the pin in the aperture. There is also a movable cap having a first and second position wherein, in the first position the movable cap does not abut the resilient locking device and wherein, in the second position, the movable cap abuts the resilient locking device so as to prevent movement of the resilient locking device out of the groove. A method of locking a valve portion to a solenoid portion of a solenoid valve is also disclosed.

Abstract: A leak proof, completely sealed solenoid valve, comprising a housing 14 having a fluid flow path controlled via an electrically operated mechanism to control a flow; the mechanism comprises metallic coil 20 coiled around a bobbin 16 supported by a magnetic bracket 24 with terminal pins 18 connected to the bobbin 16 for receiving electrical input to facilitate an energized and de-energized state to control the movement of a poppet 34 shaft that obstructs the flow; wherein, the bobbin 16 comprises micro-melting fins, thereby housing over molding creates strong bond between two materials; a permanent weld is created between the bobbin 16 and the housing 14 to prevent internal leakage; and the completely sealed solenoid valve limits emissions and evaporations of the volatile fuel components into and from the valve, and contribute to reliability and robustness of the product by completely sealing the nozzle and housing using laser welding.

Abstract: The present disclosure relates to a low friction bearing liner for a solenoid that may include a core layer, a first outer layer overlying a first surface of the core layer, a second outer layer overlying the first outer layer, a first inner layer overlying a second surface of the core layer that is opposite of the first surface of the core layer, and a second inner layer overlying the first inner layer. The first outer layer and the first inner layer may include a fluoropolymer material and may have a melt flow rate of at least about 2 g/10 min at 372° C. The second outer layer and the second inner layer may include a fluoropolymer material distinct from the fluoropolymer material of the first outer layer and may have a surface coefficient of friction of not greater than about 0.2.

Abstract: Apparatuses, systems, and associated methods of assembly are described that provide for improved sensor wire retention. An example sensor wire retention device includes a bobbin tube that defines a hollow interior configured to receive a probe assembly inserted therein. The device includes one or more coil elements wrapped around at least a portion of the bobbin tube. One or more washers are attached around the bobbin tube, and each of the one or more washers defines one or more wire notches. The device includes a wire harness of one or more wires, and each of the one or more wires of the wire harness are positioned within the one or more wire notches. The device further includes a return shield element disposed around the wires located within the wire notches of the one or more washers, and the return shield element compresses the one or more wires.

Abstract: An electromagnet and method for producing the electromagnet. The electromagnet is intended to maintain pretensioning force of fastening by a force acting on a yoke over intended operating time under changing operating temperatures. The yoke encloses an armature that is provided with a flange, which conducts magnetic flux from a housing to the armature, the housing being connected on the one hand to a flange of the yoke and on the other hand to a core flange in a material-bonding manner by welding. The electromagnet can be used for actuation of valves, couplings or other electromechanical adjusting elements.

Abstract: A line striper having a spray control system includes a spray gun, a lever, first and second cables, a manual actuator, and an assisted control. The lever is configured to move between a spray position and an inactive position. The first cable is mechanically linked to the lever. The manual control is mechanically linked to the first cable and configured to pull the first cable rearward to move the lever into the spray position. The second cable is mechanically linked to the lever. The assisted control is configured to pull the second cable rearward to move the lever into the spray position. The lever is independently moveable relative to the first and second cables such that movement of the lever caused by the first cable does not compress the second cable and movement of the lever caused by the second cable does not compress the first cable.

Abstract: An actuator includes an actuator housing having a first engagement feature and a motor located within the actuator housing and configured to rotate a driver. The actuator also includes a stroke limiting component coupled to the driver and has a second engagement feature. One of the first and second engagement features is a channel and another of the first and second engagement features is a protrusion. The protrusion is configured to fit within the channel to define a stroke of the actuator based at least in part on a length of the channel or a length of the protrusion.

Abstract: An electromagnetic actuator device with a plurality of actuator units (10, 12) having in each case an armature tappet which is movable relative to a stationary coil along an axial tappet direction when said coil is energised, said actuator units being received in respectively assigned actuator housings (11, 13) such that in an installed and/or assembled state of the electromagnetic actuator device one respective end portion (16) of the armature tappets may come into engagement in a controlled manner with an actuator partner which is able to be assigned thereto, wherein the plurality of actuator units is mechanically connected to a bracket-like and/or bridge-like connecting unit (14) made of polymer material such that the actuator housings are movable relative to one another by the action and in accordance with a predetermined bending property and/or elasticity of the connecting unit, in particular in a plane perpendicular to a tappet direction of the armature tappets which are further preferably guided in an

Abstract: In one aspect of the invention for which protection is sought there is provided reader apparatus for reading an identification code carried by a surface feature device, the surface feature device having a plurality of respective surface feature portions each provided at respective lateral locations over a lateral surface at one of a plurality of predetermined distances from a lateral reference plane, the apparatus comprising a light source and a light detector, the apparatus being configured to direct light from the light source onto the respective surface feature portions of the surface feature device and to detect by means of the detector light scattered by the respective surface feature portions, the detector being configured to output a detector signal indicative of the intensity of light incident thereon, the apparatus being configured to generate a reader signal responsive to the distance of each of the respective surface feature portions of the surface feature device from the reference plane in depende

Abstract: A method for pumping a fluid includes providing a peristaltic pump including a contact wall, an opposing, movable compression element, and a flexible tube interposed between the contact wall and the compression element in a compressing region. The flexible tube has a tube lengthwise axis and a through passage. The flexible tube is displaceable relative to the compressing region between a first position and a second position different from the first position. The method includes: with the flexible tube in the first position, compressing the flexible tube between the compression element and the contact wall to thereby force the fluid through the through passage; thereafter displacing the flexible tube into the second position from the first position; and thereafter, with the flexible tube in the second position, compressing the flexible tube between the compression element and the contact wall to thereby force the fluid through the through passage.

Abstract: A solenoid valve is provided. The solenoid valve is used to control the flow of fluid in various technical fields and products including a transmission installed in a vehicle. The solenoid valve includes a ventilation passage connecting in flow communication the interior and exterior of an operating chamber, configured to operate an armature.

Abstract: A central actuator for a magnet valve of a cam phaser, the central actuator including a housing that envelops the central actuator; a pole tube and a pole core that are arranged within at least one coil that generates a magnetic field; an actuation plunger that is arranged at an armature that is axially movable in a direction in an armature cavity; a closure element that closes the armature cavity, wherein the closure element includes at least one pole core insert that includes a central bore hole and a support bushing that is arranged in the central bore hole of the pole core insert, wherein the actuation plunger is supported axially movable in the support bushing, and wherein the closure element includes a closure cover and is provided as a pre-assembled module.

Abstract: Embodiments of the invention are directed to a device that physically imprints a paper resource distribution document for verification and authenticity purposes. In this way, the device links to a user network and associates with resource distributions available for the user. Upon authorization of the user into the device, the device may receive input from a user, including an amount for the paper resource distribution document. Upon receiving the information from the user, the device activates and prints a resource distribution document with at least a portion of the paper resource distribution document printed with dimpled or embossed characters. As such, the dimpled or embossed character recognition at distribution of the resource distribution document confirms the paper resource distribution document's authenticity.

Abstract: A solenoid actuator is provided which has a lower housing having a generally axially extending portion joined to an end cap with a central opening. An upper housing of the solenoid actuator is formed from a flat stock with a main body with radially extending slot separated legs which are plastically deformed into a cylindrical portion for press fit acceptance with an outer diameter of lower housing axially extending portion.

Abstract: A solenoid actuator is provided which has a lower housing having a generally axially extending portion joined to an end cap with a central opening. An upper housing of the solenoid actuator is formed from a flat stock with a main body with radially extending slot separated legs which are plastically deformed into a cylindrical portion for press fit acceptance with an outer diameter of lower housing axially extending portion.

Abstract: The present invention relates to smart gun technology, i.e., devices, systems, and methods, designed to ensure that the individual who is attempting to fire a weapon has been authorized to use the in-use weapon. In some embodiments, we disclose a firearm safety device having a spring-type, hammerless firing pin coupled to a logic circuit configured to uniquely identify an individual. Some embodiments employ RFID technology, which is much more reliable than most consumer-grade biometric identification mechanisms.

Abstract: A device and a method for simultaneous recording, in real time, parameters characterising the mechanical tension, elasticity, dynamical stiffness, creepability and mechanical stress of soft biological tissue are provided. By means of the myometer, a constant external pre-pressure is created, independently of the device's position, between the tissue and the testing end of the device. Next, the tissue is subjected to a short-term external dynamic influence. A mechanical change in the shape of the tissue and its mechanical response are registered as a graph of the tissue's oscillations. For calculating the parameters, a time span on the graph is used which involves an oscillation period from the beginning to the end of the effect on the tissue plus its subsequent first 1.5 self-oscillation period. This enables recording and data-processing to be carried out simultaneously as well as statistically significant estimates to be made in real time.

Abstract: A starter is disposed with an elastic body which generates slide resistance between the inner circumferential surface of a cylinder hole of a movable core and a first annular groove section of a flange section of a hook and the starter has an air damper function; and consequently, the effect of suppressing compression of a drive spring can be sufficiently obtained without reducing the suction speed of a plunger as much as possible and an engine can be rapidly started up.

Abstract: An electromagnetic linear valve includes a housing including a core closing an opening at one end portion of the body portion, and a separation portion separating an interior into a first liquid chamber located in a core side and a second liquid chamber; a plunger disposed in the first liquid chamber so as to move along the axis in a state in which one end thereof faces to the core and the other end can sit on a hole; an elastic member applying a force to move the plunger away from the core; and a coil generating magnetic field to move the plunger toward the core. A recess is formed in a section of an inner circumferential portion of the body portion which intersects with an end face of the core in the first direction.

Abstract: A method for actuating an electromagnetic actuator device having a coil includes providing a plunger to be activated having at least one section movably disposed in the magnetic field, after activation of the plunger, reducing a voltage again by applying an electrical voltage to end the activation, and after an end of the electrical activation of the plunger, applying a magnetization voltage, which is not sufficient for an activation, to the coil for a predefined time period.

Abstract: An electromagnetic solenoid actuator comprises a ferromagnetic core and a ferromagnetic plunger. The ferromagnetic core supports a plurality of windings, and is oriented along an axis. The ferromagnetic plunger is aligned axially with the ferromagnetic core, and is translatable along the axis to vary a width of an air gap separating the ferromagnetic plunger from the ferromagnetic core. The ferromagnetic plunger and the ferromagnetic core overlap axially at a flux bypass that provides an alternative flux path that diverts increasing flux away from the air gap as the width of air gap decreases.

Abstract: An electromagnetic drive for an electrical switch such as a circuit breaker, has at least one movable armature that can implement a lifting movement along a pushing direction for moving a movable switching contact of the switch. In a closed armature position, the armature closes a magnetic circuit through first and second magnetically conductive yoke parts. A permanent magnet produces a magnetic field for the magnetic circuit and a holding force for holding the armature in the closed position. A coil is disposed to generate a magnetic flux in the same or opposite direction as the magnetic flux of the permanent magnet. The electromagnetic drive can be readjusted after installation, where the first and second yoke parts are moved relative to one another by the permanent magnet into the adjusted state, whereupon they are fixed in position.

Abstract: A linear solenoid includes a collar, which limits relative movement between a first stationary core and a second stationary core. The first stationary core includes a bearing portion and a fixing portion, which are formed integrally as a single integral member. The bearing portion supports the shaft. The fixing portion is fixed to the yoke while the collar is clamped between the fixing portion and the second stationary core in the axial direction.

Abstract: A solenoid apparatus for a shift lever is provided that includes a bobbin having an aperture therein and a coil wound therearound. A core is mounted on the exterior of the bobbin, surrounds an end portion of the aperture, and is magnetized by a current applied to the coil. A plunger moves along the inside of the aperture and is magnetized by the current. A shaft is inserted into, and penetrates through, the plunger and a buffer member is disposed at an end of the shaft exposed from the plunger. An elastic member is disposed between the buffer member and an end of the aperture. The plunger moves toward the core due to combined forces obtained by combining forces applied in a direction of the movement of the plunger by a magnetic field generated by the current and attractive forces generated vertically between the plunger and the core.

Abstract: An electromagnetic solenoid is provided with a bobbin having a generally cylindrical body and a pair of radially outwardly extending end flanges each disposed at opposite ends of the generally cylindrical body. The pair of end flanges each have an inner face facing one another and an outer face facing away from one another. The inner and outer faces of the pair of end flanges have a plurality of grooves formed in a surface thereof. The grooves provide for enhanced retention of an over-mold that seals a coil within the bobbin assembly.

Abstract: A communication hole is formed in a peripheral wall portion of a yoke. The communication hole communicates between an inside and an outside of the yoke. A gap, which is formed between one end portion of the coil and a bottom wall portion of the yoke, overlaps with the communication hole in an axial direction.

Abstract: An electromagnet includes a core and a wire wound on the core. The wire includes an electric conductor and a magnetic layer provided on a surface of the electric conductor.

Abstract: An actuating device, particularly for actuating valves connected externally, includes a housing (10) and a coil body (12) arranged in the housing. The coil body has a coil winding (14) at least partially enclosing a coil tube (16), a pole core (20) connected at the coil tube free end, an armature (22) guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacting with an actuating part (26) for actuating the respective valve part. The pole tube (16) is designed as a receiving sleeve for the armature (22). The sleeve is fixed with its free end region to a fixed bearing point. The fixed bearing point is formed by two support parts (118, 124) of the pole core (20) that delimit a receiving gap between them, in which the free end region of the receiving sleeve is fixed in a clamped manner.

Abstract: An actuating device, particularly for actuating valves that can be connected externally, includes a housing (10) and a coiled body (12) in the housing and having a coil winding (14). The winding encloses a pole tube (16) at least partially, having a pole core (20) connected at its free end. An armature (22) is guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacts with an actuating device (26) for actuating a valve part. The actuating part (26) is guided within the pole core (20) along an annular body (92), sealing the inside of the pole core (20) and the pole tube (16) relative to the surrounding area.

Abstract: A solenoid for a vehicle starter includes at least one coil with a passage extending through the coil in an axial direction. The solenoid further includes a plunger configured to move in the axial direction within the passage. The plunger includes a cylindrical outer surface with a substantially uniform diameter and a circumferential notch. The cylindrical outer surface includes a first portion with a first diameter on one side of the circumferential notch, and a second portion with the first diameter on an opposite side of the circumferential notch. The circumferential notch includes a portion with a second diameter that is less than the first diameter.

Abstract: A valve timing controller has a control valve and a linear solenoid. The control valve is disposed in an interlocking rotor constructed by a vane rotor and a camshaft. The linear solenoid includes a movable member having an output shaft, and a bearing portion supporting the movable member to reciprocate and rotate. A spool of the control valve is contact with the output shaft. The output shaft contacts a sphere-shaped end surface of the spool, at a contact position offset in a radial direction from a center axis of the spool.

Abstract: An armature-stator structure (45) includes a stator (56) having a magnetic housing (57) of generally U-shaped cross-section. The housing includes an open end (58) in communication with an interior portion (60). A coil (94) is associated with the stator and to be energized to generate a magnetic field. An armature (46) has a generally ring-shaped base (48) and a generally rod-shaped stem portion (50) extending transversely from the base such that the base and stem portion define a generally T-shaped cross-section. The base is able to be received in the opened end of the housing with the stem portion extending into the interior portion. The armature moves with respect to the stator from a first position to a second position in response to the generated magnetic field. The stator and armature are configured such that a force on the armature decreases as a portion of the armature moves further into the interior portion of the body of the stator, towards the second position.

Abstract: A magnetic actuator unit is provided for a circuit breaker, such as a medium voltage vacuum circuit breaker. The magnetic actuator unit includes a core, a coil, an actuating shaft, a first movable plate, a second movable plate, and a non-magnetic flat insert arranged between the core and the second movable plate. The magnetic actuator unit configured to switch the circuit breaker ON and OFF by moving the first movable plate between an ON position and an OFF position. The non-magnetic flat insert and the second movable plate are configured to adjust a holding force of the magnetic actuator unit provided by the second movable plate at the OFF position. The holding force is sufficient for holding the second movable plate at the OFF position against outer forces that are acting on the magnetic actuator unit.

Abstract: A relay includes: a plurality of fixed terminals arranged to have fixed contacts; and a movable contact member arranged to have a plurality of movable contacts that are correspondingly opposed to the respective fixed contacts. The relay further includes: a driving structure operated to move the movable contact member such that the respective movable contacts come into contact with the corresponding fixed contacts; a plurality of first vessels provided corresponding to the respective fixed terminals and arranged to have insulating property; a second vessel joined with the plurality of first vessels; and an air-tight space formed by the plurality of fixed terminals, the plurality of first vessels and the second vessel to allow the movable contact member and the respective fixed contacts to be placed therein.

Abstract: An electromagnet, in particular a switching magnet, has a field winding (11) located on a coil former (7), and has a pole piece (23) forming a part of the magnetic return path. A pole core (17) and an axially movable magnetic piston (19) are provided within the coil former (7). The pole piece (23) forms an aperture opening (25) for the magnet piston (19) on the area opposite the pole core (17). The magnet piston (19) is borne for its movement in its guide in the pole core (17). The pole piece (23) has a flange part (27) at least partially engaged over the coil former (7) at its axial end, and has a bush part (29) which extends axially from it. Within the coil former (7), the pole piece forms a hollow cylinder engaged over a longitudinal section of the magnet piston (19). Between the inner wall of the hollow cylinder and the circumference of the magnet piston (19), a parasitic air gap (30) is formed.

Abstract: A solenoid assembly for an automatic transmission according to one embodiment includes a monolithic bushing coupled to a coil assembly; a plunger received in an inner channel of the bushing; and a variable force valve being selectively actuated by the plunger.

Abstract: A starting switch structure including a body, plunger piston movable in the body, wherein the plunger piston has a first accommodating portion at an end of the plunger piston for accommodating an end of a guide pin moving reciprocally, the accommodating portion has a butting portion at the bottom surface, an excitation portion wound around the end of the plunger piston, and a butting part at an open end of the accommodating portion of the plunger piston, wherein a contact point is led to electrically connect the first terminal to the second in case that the plunger piston and the guide pin move in a first direction when the excitation portion excites, while a broken circuit is led between the first terminal and the second terminal in case the plunger piston and guide pin move in a second direction after the excitation portion has finished exciting.

Abstract: An electromagnetic actuating apparatus having an armature unit, which can be moved through a movement distance in an axial direction relative to a stationary core unit and in reaction to an operating current being passed through a coil unit, which armature unit magnetically interacts axially at one end with the core unit over a control range which at least partially overlaps axially along the movement distance, which, as a section of the armature unit, has a first profile section and, as a section of the core unit, has a second profile section, with an air gap formed between them and forms an extent at right angles to the axial direction.

Abstract: The present invention relates to an electromagnetic contactor including a stationary armature which includes a housing enclosure for a coil for generating a magnetic field, the enclosure having an opening, a closing cover for the opening of the enclosure, the closing cover having an aperture, and a movable armature passing through the aperture of the closing cover for the opening of the enclosure, further including a guide ring made from non-magnetic material which is arranged in the aperture of the closing cover so as to have, between a first wall in contact with the wall of the aperture of the cover and a second wall facing towards the movable armature, a thickness corresponding to the minimal radial gap between the movable armature and the stationary armature.

Abstract: An automatic transfer switch to automatically electrically connect an electrical panel to a second power source, e.g., an electric generator, during interruption or failure of a first power source, e.g., a utility power supply, includes a powered interlock arrangement that is operative to prevent the electrical panel from being electrically connected to both power sources simultaneously.

Abstract: Embodiments of soft latching solenoids comprise a coil assembly (24); a plunger assembly (26); at least one flux conductor (28) comprising a flux circuit. The coil assembly (24) is fixedly situated with respect to a solenoid frame (21). The plunger assembly (26) is configured to linearly translate in a first direction along a plunger axis (32) upon application of a pulse of power to the coil assembly (24). The flux conductor(s) (28) is/are positioned radially exteriorly to the plunger assembly (26) to form the flux circuit. The flux circuit comprises the solenoid frame (21), the plunger assembly (26), and the at least one flux conductor (28). The flux circuit is arranged and configured so that the plunger assembly (26) is held in a plunger detent position upon cessation of the pulse of power.

Abstract: A proportional magnet for a hydraulic directional control valve and a method for the production thereof. The proportional magnet has a coil unit, a bearing unit and a pole disk. The coil unit has a cylindrical coil, a cylindrical magnet casing surrounding the coil, an annular yoke disc arranged at a face of the magnet casing and a housing. The bearing unit has a yoke with a first bearing point, a pole core with a second bearing point, and an armature unit with a magnet armature and a pressure pin. The bearing points and armature unit are aligned coaxially by a centering sleeve. When mounting the proportional magnet, the bearing unit is inserted into a cylindrical opening of the coil unit and the pole disc is put on the coil unit after the bearing unit is inserted for axially fixating the bearing unit and closing the magnetic circuit.

Abstract: A solenoid for a vehicle starter includes at least one coil with a passage extending through the coil. A plunger is slideably positioned within the passage and configured to move in an axial direction between a first position and a second position. The plunger includes a substantially cylindrical outer surface portion with a circumferential notch formed in the outer surface portion. The at least one coil may include a pull-in coil and a hold-in coil wound on a spool. A plate member is positioned at one end of the spool and is separated from the plunger by a radial distance. The radial distance varies when the plunger moves in the axial direction as a result of the notch moving in relation to the plate member. A sleeve member may be coupled to the plunger such that the sleeve member covers the circumferential notch formed in the plunger.

Abstract: The invention refers to a solenoid with a magnet body connected with a tube pipe, wherein means for fastening the magnet body to the tube pipe are provided, and the means have at least one electrically conductive element, which is in contact, on the one hand, with the tube pipe, on the other hand, with the magnet body, for electric connection of tube pipe and magnet body.