Abstract: An inline electromagnetic tool actuator incorporates an actuator housing, an elongated armature, a tool assembly, spaced-apart return magnets, at least one drive magnet, and at least one magnet wire. The elongated armature is located inside the housing, and is adapted for reciprocating linear movement along a notional assembly axis. The tool assembly is operatively attached to the armature. The return magnets are located inside the housing, and are coaxially aligned with the armature. The return magnets have respective inward facing surfaces defining respective magnetic poles. The drive magnet is affixed to the armature, and is arranged between the return magnets. The drive magnet has opposing outward facing surfaces each of like polarity to adjacent inward facing surfaces of the return magnets. The magnet wire is coiled about the armature.

Abstract: A bottom of a housing has a protruding support extending a predetermined distance toward a movable core, and the movable core has an annular boss extending a predetermined distance toward the housing. The annular boss is disposed in an annular space defined between the bottom of the housing and the protruding support of the housing.

Abstract: A solenoid assembly for use in connection with a housing and valve body is provided. The assembly includes a magnetic coil, a magnetic pole piece, an operating rod, and a magnetic armature. The operating rod is slidably disposed within a portion of the pole piece and is at least in part centered relative to the pole piece. Activation of the coil provides an attraction between the armature and the pole piece. An embodiment of the assembly may additionally include one or more bearings positioned between the operating rod and the pole piece.

Abstract: Provided is a manufacturing method of self-sustaining center-anchor microelectromechanical switch driven by an electrostatic force used for controlling a signal transmission in an electronic system, which can suppress deformation of a movement plane generated during manufacturing and operation process by inserting the self-sustaining center-anchor, and improve a ground line contact phenomenon of an upper electrode, thereby enhancing reliability and signal isolation feature while maintaining an existing insertion loss feature compared to the microelectromechanical switch of the prior art.

Abstract: Embodiments of the present invention provide solenoid plungers, solenoid actuators, and solenoid-actuated mechanisms, that provide for an adjustable stroke, adjustable rated force, and adjustable plunger extension that overcome the problems and issues associated with non-adjustable solenoid actuators. In accordance with an embodiment of the present invention, an adjustable solenoid plunger is provided that comprises a stem and an armature including an axial armature bore. The stem engages the armature bore and is adapted for advancement of the armature along at least a portion of the stem.

Abstract: A medium voltage vacuum contactor comprising for each pole, a vacuum envelope which contains a fixed contact and a corresponding movable contact; and actuating means providing the energy required to move the movable contacts, characterized in that said actuating means comprise an electromagnetic actuator having: a magnetic yoke which has an inner cavity communicating with the outside through at least a first opening; at least one coil accommodated in the cavity; a movable armature which is operatively connected to at least one movable contact through coupling means, and is mounted axially displaceable in the cavity with at least one end protruding from the first opening; at least one permanent magnet devoted to directly hold the movable armature in two stable positions. Further, there are provided means for guiding the movement of the movable armature which are positioned outside the yoke in correspondence of at least the first opening.

Abstract: An electromagnetic actuator comprises an driven member and magnetostrictive elements which change the dimensions thereof when activated or deactivated by selectively applying magnetic flux therein. The driven member is moved in a selected direction when the appropriate elements are activated and deactivated in a controlled manner.

Abstract: To effectively prevent uneven wear of a moving mover 70 and to stabilize the control characteristics by a valve. Rotation force is exerted to the mover 70 by the fluid flowing from the first chamber to the second chamber, or vice versa, which are formed at the opposite ends of the mover 70. With respect to a flow passageway 110 formed within an anchor 72 and for allowing passage of the fluid therethrough, there are provided a passageway portion 111 which is disposed along the axial direction and another passageway portion 112 which crosses the axial direction. By this, rotation force is generated at the time the fluid passes from the former passageway portion 111 to the latter passageway portion 112 (or vice versa) which crosses the axial direction.

Abstract: An electromagnetic actuator is provided that comprises a housing, a solenoid coil, and an armature. The armature is movably disposed in an interior cavity defined by the housing. Irregular gaps are formed between the armature and the housing to increase the initial force of the actuator and to improve the latching force of the actuator after the actuator has been actuated.

Abstract: An actuator suitable for use with a fluid flow control valve includes a frame, a bobbin, a coil and a plunger assembly. The frame is generally cylindrical and has a longitudinal axis. The bobbin, which is wound with the coil, includes a central cavity. The plunger assembly is received within the central cavity and includes a plunger portion and a rod portion. The plunger portion is formed of magnetic material. The rod portion may be snapped on the plunger portion to form the plunger assembly. The plunger assembly is configured to move within the cavity in response to an actuator control signal applied to the magnetic coil. Separating the plunger portion and the rod portion improves manufacturability as well as reduces the occurrence of rod damage.

Abstract: A solenoid stator assembly and manufacturing method for an electro-mechanically actuated fuel injector. The solenoid stator assembly comprises a permeable stator core and a stator coil. A housing formed of an electrically insulating material is located about the stator core and stator coil such that a distal end of the stator core is oriented proximate to an armature of the fuel injector. A pair of terminals extends into the housing to a pair of leads for the stator coil to energize the stator coil and generate a magnetic field for actuating the fuel injector armature. A reinforcement structure is disposed generally about the stator core within the housing to improve the robustness of the stator assembly.

Abstract: A novel solenoid assembly is shown to include a solenoid having an armature and a delay member. The delay member delays movement of the armature from a first position to a second position until some desired condition occurs, for example, until a desired period of time has passed, until the solenoid is capable of generating a desired amount of force or until the current applied to the solenoid reaches a desired level. In a preferred embodiment, the delay member is a spring positioned to bias the armature against movement until the desired condition has occurred. In such an embodiment, the spring may be positioned to exert force against a shoulder formed on the armature. It is also preferred for the solenoid assembly to include a spacer, positioned between the solenoid and the mechanism being controlled by the solenoid. The spacer serves to space the armature from the mechanism when the armature is in the first position.

Abstract: An electromagnet (10) for actuating a hydraulic on-off valve (11), has a wet-type configuration and its armature (31) is displaced in a pressure pipe (18) when a volume of oil is switched through a throttling site (35) in such a way that switching speed can be influenced. The electromagnet (10) has a manual emergency actuation device (43) in the pressure pipe (18). If necessary, the actuating bolts (44) of said device can be engaged with a throttle screw (39) by an interlocking connection (45, 42) in order to displace said throttle screw that is arranged in the armature (31). The switching speed of the distributing valve (11) can be easily regulated from the outside when the electromagnets (10) are mounted, without impairing functioning of the manual emergency actuation device.

Abstract: An electromagnetically energized actuator featuring low friction, low wear, low impact and low noise attributes. The actuator includes a polymer tube, a stop fixedly disposed in the tube and composed of a highly permeable material, a plunger reciprocably disposed within the tube and composed of a highly permeable material, a spring assembly including a spring which is formed at the facing ends the stop and the plunger which spring serves to bias the plunger away from the stop, a first plate composed of a highly permeable material which is connected to a first end of the tube, and a second plate composed of a highly permeable material which is connected to a second end of the tube. The tube is composed of a polymer which (relative to a conventional brass tube) allows tighter tolerances between the plunger and the tube resulting in lower wear, less sliding noise, reduction in corrosion, and elimination of thinned end of the tube. The preferred tube polymer is VESPEL® with TEFLON® mixture.

Abstract: An apparatus for use in components such as servo-valves, regulators and injectors for stabilizing system oscillations. The apparatus includes an armature having at least one groove formed on an exterior surface thereof; a sleeve, the armature being movably disposed in the sleeve; and a spring member disposed in the at least one groove in the armature and in sliding contact with the sleeve wherein the spring member exerts a radially outwardly directed spring force against the sleeve. A method of stabilizing an electromagnetically operated actuator comprises providing an armature having at least one groove formed on an exterior surface thereof; providing a sleeve wherein the armature is movably disposed in the sleeve; and disposing a spring member in the at least one groove in the armature and in sliding contact with the sleeve whereby the spring member exerts a radially outwardly directed spring force against the sleeve.

Abstract: A circuit breaker includes a housing, separable contacts disposed in the housing, a latchable operating mechanism structured to separate the separable contacts, and a magnetic trip mechanism coupled to the latchable operating mechanism. The magnetic trip mechanism includes a plunger assembly support structure and a plunger assembly having a moveable core. The plunger assembly support structure includes a wall having a slot therein. The moveable core rests in the slot. A positioning member has a hook and an opening. The hook engages the wall of the plunger assembly support structure. The moveable core passes through the opening of the positioning member, which retains the moveable core relative to the plunger assembly support structure.

Abstract: A DC electromagnet system used in an electrical switchgear, for example in a contactor having a driving coil, includes a fixed, C-shaped magnet yoke and a movable, rod-shaped armature. The yoke has a central web and two legs. The armature is guided in its displacement stroke by guide devices, the free end of the armature being directed toward the central web of the magnet yoke. There is a single working air gap between the free end of the armature and the center of the central web, perpendicular to the longitudinal axis of the armature. The ends of the yoke legs extend to the proximity of the armature and are separated from the armature, each forming a parasitic air gap.

Abstract: A relay (10), in particular for a starter for an internal combustion engine, is proposed. The relay (10) includes a relay coil (13) and a solenoid armature (22) which can be moved when full battery current flows to the relay coil (13). A contact member (37) can be actuated by the solenoid armature (22), whereby an operating lever (31) is situated on the contact member (37). It is provided that a coupling element (46) connects the operating lever (31) and the solenoid armature (22) with each other in a manner that allows them to slide with limits.

Abstract: In an electromagnet having an armature, in particular for use in a solenoid valve, which includes a solenoid coil, a magnet core which passes through the solenoid coil and has at least one pole face, an armature which is supported perpendicularly to the at least one pole face of the magnet core so as to be able to slide and has an armature plate facing the pole face and an armature pin that projects from the armature plate and is supported so as to be able to slide and rotate, and an adjusting arrangement that is formed on the electromagnet and/or on the armature and adjust the armature plate to a predetermined rotational position, it is proposed that at least one first cutout which is radially offset from the armature pin and formed in the armature plate, and at least one second cutout which is situated in the at least one pole face of the magnet core and assigned to the first cutout, be provided as adjusting arrangement; the second cutout magnetically interacting with the first cutout in response to the sol

Abstract: An electronically-operable door strike employing a guard clip for deterring picking of the locking mechanism therein, a springless solenoid designed to avoid the undesirable build-up of residual magnetism and which incorporates air gaps for dissipating heat, thus prolonging the useful life of the solenoid, and a face plate for mounting the strike into a door jamb.

Abstract: Solenoid operated fluid control valve is connected to a housing of fluid circuit by a twist-on, fluid tight connection between the housing and a solenoid assembly of the fluid control valve. The solenoid assembly has an armature movable in response to electrical current to a wire coil wound on a bobbin in a solenoid housing for controlling position of a movable valve located in a valve body thereof. The control valve includes a valve-receiving nozzle or body with compressible annular fluid seal on a region thereof that is received within the fluid circuit housing. The solenoid bobbin includes a plurality of connection tabs spaced peripherally apart and adapted to be initially received in entrances to an arcuate groove on the fluid circuit housing.

Abstract: There is provided a provide a solenoid actuator which is capable of smoothly driving a driven member, with enhanced durability, and at the same time permits the stroke of the driven member to be changed with ease. A solenoid actuator drives a valve by an electromagnetic force such that the valve performs reciprocating motion. An armature is connected to the valve, for performing reciprocating motion in accordance with energization and deenergization of at least one electromagnet to thereby drive the valve such that the valve performs the reciprocating motion. The armature has two end faces extending in parallel with each other in a direction orthogonal to a direction of the reciprocating motion thereof. Two guide joints have respective two guide surface opposed to the two end faces of the armature, each formed with two armature guides.

Abstract: A solenoid for a hydraulic valve has an armature chamber having chamber walls. A pole core forms one of the chamber walls and has an axial central bore. An armature is slidably arranged in the armature chamber. The armature has a central receptacle. An armature piston is arranged in the central receptacle of the armature and extends through the axial central bore of the pole core. The armature piston consists of a nonmagnetic material. The armature piston acts on a valve member when moved by the armature piston. The armature piston is a tubular member formed of a piece of planar sheet metal and has a radially outwardly projecting anti-stick disc that defines a minimal axial spacing between the armature and the pole core. The radially outwardly projecting anti-stick disc is formed as a monolithic part of the tubular member by parts of the sheet metal being bent radially outwardly relative to the tubular member.

Abstract: An improved solenoid for providing linear actuation. The outer polepiece of the solenoid is provided with an axial journal bearing for supporting an actuating shaft extending from the solenoid armature. Radial tolerance between the bearing inner bore and the shaft is as small as in practically possible, which feature permits elimination of the prior art portion of the guiding sleeve extending into the outer polepiece, thereby retaining frictional losses with only the remaining sleeve portion in the inner polepiece. Small prior art air gaps at interfaces 42,44 between the polepieces and the housing are eliminated to minimize reluctance of the magnetic circuit. A significant increase in actuating force is realized in comparison with a prior art solenoid actuator.

Abstract: The present invention is directed to an electromagnetic valve which includes a cylindrical fixed core, a spring which is mounted at a predetermined position within a hollow portion of the fixed core, a non-magnetic portion which is formed in the fixed core near the spring, and a valve seat member which is disposed at a position away from the predetermined position by a certain distance along a longitudinal axis of the fixed core. And, a movable core is disposed within the hollow portion of the fixed core between the valve seat member and the spring to be movable along the longitudinal axis of the fixed core. The movable core is provided with a stepped columnar portion having a small diameter section formed at its one end portion near the spring, and a large diameter section formed at its the other one end portion near the valve seat member, with a step formed at a boundary between the large diameter section and the small diameter section.

Abstract: To provide an electromagnetic actuator, having a large stroke and capable of producing the maximum thrust at a retreated stroke end, which is simple in structure and easy to manufacture. The electromagnetic actuator comprises an electromagnetic coil 1, a magnetic frame 3 arranged on the periphery thereof, a movable iron core 5 slidable in a central hole 4 of the coil 1, a first sleeve 6 coupled with the magnetic frame 3 at one end side of the central hole 4 of the coil, and a second sleeve 7 coupled with the magnetic frame 3 at the other end side of the central hole 4. The second sleeve 7 is spaced from the first sleeve 6 with a space (A+C) in the axial direction, and has an end thereof opposing the first sleeve 6 extended to a position in close proximity to the movable iron core 5 when the movable iron core 5 is at the retreated stroke end, but without being substantially fitted thereon, and extended to a position apart therefrom by a micro-distance A.

Abstract: The present invention relates to an electromagnetically driven valve suited for use in an internal combustion engine and aims at achieving appropriate operating characteristics in accordance with operating conditions of the internal combustion engine at the time of opening or closing a valve body. An armature moving together with the valve body is provided and upper and lower cores are disposed on opposed sides of the armature. The upper core and the lower core accommodate upper and lower coils, respectively. An annular protrusion, formed not on the upper core but on the lower core only, has an inner diameter slightly larger than an outer diameter of the armature.

Abstract: The invention relates to an electromagnet, comprising a coil (30) which can be supplied with current and which thus generates a magnetic field and moves an armature (11) when supplied with current, and wherein the armature (11) serves for controlling a valve or another element. In order to improve the running properties of the armature (11), it is proposed that the armature (11) runs on a plastics sliding surface (2), in particular a sliding film (20) made of plastic.

Abstract: Proportional solenoids have low friction bearings formed by molding a pair of annular bearings in imprecise grooves formed in armatures so that radially outer surfaces of the bearings have a precise and low friction fit within precision machined interiors of solenoid housings. The bearings can be formed on body or push rod portions of the armatures and can have different outside diameters that are formed in a single precision mold to ensure concentricity and accuracy without requiring precision machining of armature or bearing surfaces.

Abstract: The solenoid actuator (26) is designed to be installed within a mounting bore (22) formed in a support housing (24). The solenoid actuator (26) is provided at its top with an end cap (46) made of molded plastics which is configured to be closely fitted in the mounting bore (22) to close the opening of the bore. When the actuator is installed within the mounting bore (22), the end cap (46) protects underlying yoke member (40/64), armature (80) and magnetic pole piece (74) from attack by corrosive substance.

Abstract: The invention relates to a solenoid valve with a coil body, a magnet core, an armature with armature guide and a yoke. In a first variant there is provided between the yoke and the armature guide a pole tube which has first means for producing an electrical contact with the armature guide and second means for producing an electrical contact with the yoke. In a second variant the solenoid valve also has a fixing plate which is disposed on the side of the solenoid valve on which the armature guide projects out of the yoke, the armature guide projecting through the fixing plate. According to the invention, in this variant a contacting element which produces an electrical contact between the fixing plate and the armature guide is provided between the fixing plate and the armature guide.

Abstract: The present invention relates to an electromagnetically driven valve suited for use in an internal combustion engine and aims at achieving appropriate operating characteristics in accordance with operating conditions of the internal combustion engine at the time of opening or closing a valve body. An armature moving together with the valve body is provided and upper and lower cores are disposed on opposed sides of the armature. The upper core and the lower core accommodate upper and lower coils, respectively. An annular protrusion, formed not on the upper core but on the lower core only, has an inner diameter slightly larger than an outer diameter of the armature.

Abstract: A higher reliable air control valve capable of improving producibility and reducing manufacturing cost without unpleasant characteristic change under operation.

Abstract: Improved accuracy and response of an EEGR valve (60) are obtained by novel constructional features of an upper stator member (194), a lower stator member (174), a bearing guide member (140), and a shell (64), and various inter-relationships between them for improved concentricity of parts, stable and accurate positioning of parts relative to each other, and better resistance to muddy water intrusion at an ambient air space (76) that provides for ambient air to pass through for cooling the valve. A lower stator member (174) has a through-hole (184) to which a bearing member (140) that guides a pintle shaft (114) is concentrically disposed. A frusto-conical surface (182) extends from through-hole (184) to the ambient air space (76).

Abstract: An armature assembly is provided for use in a solenoid actuator assembly having an energizable coil. The solenoid actuator assembly includes a housing and a bore disposed in the housing. The armature assembly has an outer surface and is positioned in the bore for axial sliding movement. The armature assembly has an outer surface which is of a diameter significantly less than a diameter of the bore and defines a fluid passage through the bore. Sleeve bearings are positioned at preselected spaced locations within the bore and extends about and in contact with a shaft of the armature assembly.

Abstract: An electromagnetic actuator includes a bobbin which is disposed between opposite ends of a housing made of a magnetic material and which has a coil wound therearound, a guide sleeve which is fitted to an inner periphery of the bobbin and which is opposed at one end thereof to one of wall ends of the housing and fitted at the other end thereof into a support bore in the other end of the housing, a stationary core fitted into the guide sleeve and caulked to the one end wall of the housing, and a movable core slidably fitted into the guide sleeve and cooperating with the stationary core. In this electromagnetic actuator, an end of the guide sleeve guiding the movable core is placed into close contact with and coupled in a caulked manner to an outer peripheral surface of the stationary core which is caulked and coupled to one of end walls of the magnetic housing.

Abstract: An exhaust gas recirculation valve comprising a solenoid device and a valve mechanism is disclosed. The solenoid device has a coil, an armature, and a roller bearing to support a guide mechanically coupled to the armature. The armature and the guide translate with respect to the roller bearing in response to energizing the solenoid device by applying an electrical signal to the coil. The valve mechanism has a stem member which translates with the stem guide for varying fluidic communication between an inlet port and an outlet port in response to the electrical signal.

Abstract: A pressure regulator in the form of a proportional pressure control solenoid provides predictable and repeatable control of pressure in response to an electrical input signal. The pressure regulator converts the electrical control signal to an output pressure at the load independent of the flow requirements. The electromagnetic portion of the pressure regulator generates a force proportional to the average current supplied by a controller and applies that force to the hydraulic components of the device. The hydraulic components include a spool and a feedback pin which apply a pressure feedback force to the solenoid.

Abstract: A low-noise solenoid has an armature with a projecting ridge receivable within a groove in a pole piece. As the ridge enters the groove, the magnetic force which opposes a return spring decreases until there is equilibrium whereat the armature remains suspended without impacting upon the pole piece.

Abstract: A valve and method of making same with a valve body defining an inlet and outlet and which communicate with a valving chamber. A cup-shaped glide member in the chamber is sealed over the outlet and has cross-ports over which slide a valving sleeve attached to a ferromagnetic armature. The armature slides in a guide tube which is sealed on the body and closes the valving chamber. The guide tube preferably has a magnetic pole piece attached the end remote from the body. The valving sleeve is attached to the armature in a manner which allows frictional slippage in the direction transverse to the armature motion to permit the sleeve to be guided by the glide member and the armature to be guided by the guide tube. A solenoid coil is received over the guide tube and preferably retained by engagement with the pole piece.

Abstract: An electromagnetically controllable valve has among other elements a guide sleeve that protrudes into a valve block, with an armature and a closing member movable inside the guide sleeve relative to a valve seat. The guide sleeve extends through a securing flange, which is inserted into a receiving bore, located on the valve block, and is fixed there. To secure the guide sleeve against shifting out of the valve block and the securing flange, the guide sleeve is provided with a radially outward-oriented bead. This bead extends within a region, for example an annular recess, that is associated with the securing flange. By way of the recess and the bead, the guide sleeve is axially fixed essentially form-lockingly and inexpensively. The electromagnetically actuatable valve can be built into traction-controlled brake systems of motor vehicles in order to vary brake pressures in the anti-lock and/or traction control modes.

Abstract: A proportional pressure control valve has a poppet including a control pin for seating against the seat and which is pressed into a generally tubular armature. One end of the armature proximal to the seat has an enlarged diameter and fits into a cup shaped recess of the housing in an extreme position of the poppet. A smaller diameter of the armature is journaled in a magnetic sleeve bearing at a distal end of the poppet and the control pin is journaled in a sleeve bearing at the proximal end of the popper. A plastic plug covers the distal end of the armature and an annular gap is created at the distal end of the armature bearing between the armature and the housing.

Abstract: An improved torque motor includes a supporting body (3) having a U-shaped cross-section and formed of a magnetizable material, includes at least two magnet structures (7, 8) adapted to be mounted on the body, includes first polepieces (10-13) mounted on the magnet structures, and includes an armature (5) mounted for movement in working air gaps (16, 17) between the first polepieces. Permanent magnets (10, 11) are mounted on the first polepieces. A second polepiece is spaced from the armature by the presence of a non-working air gap (21). At least one control coil (20) surrounding the second pole between the magnet structures (7, 8).

Abstract: A valve assembly for metering exhaust gas to the intake of an internal combustion engine has an electromagnetic solenoid actuator having a magnetic circuit which includes a stationary pole piece, an armature moveable within said pole piece, and an air gap separating the pole piece and the armature. The air gap is established using a sleeve member constructed of non-magnetic material and having axially extending slots formed therein. The slots are operable to transfer air from the space above the armature to a space below the armature when the armature moves axially, relative to the pole piece.

Abstract: A method and apparatus for a two-pulse solenoid embossing system implementing an amplitude feedback circuit, i.e., current monitor (48), to provide precise amplitude and timing control over two current pulses (4, 5), and thereby provide precision control over the position and velocity of the embossing system's print elements (64a, 64b). To maintain the current amplitude during the second current pulse (5), the method and apparatus alternatively switches the power on and off to the solenoid coils (55) with a frequency such that a substantially constant current amplitude is maintained in the solenoid coils (55). The embossing system provides an improved solenoid body assembly (61) including a first stack of steel laminations (93), a center block (82) and a second stack of steel laminations (81). A plunger (62) is slidably connected to the solenoid body assembly (61) by shaft (63). Cavities (79) receive dowel pins (71) which are attached to plunger (62).

Abstract: A rectilinear motion proportional solenoid assembly includes a cylindrical housing containing an electromagnetic coil having a longitudinal coaxial bore. The housing contains magnetic material for providing a flux path for the magnetic field produced by the coil. A generally cylindrical magnetic pole piece element is inserted into the bore and a movable armature assembly of magnetic material is supported within the bore for movement along the longitudinal axis of the coil by a pair of thin, flexible suspension springs. One of the springs is located within the bore adjacent to one end of the magnetic pole piece whereat an axial gap between the pole piece and the armature is formed. A second spring is located within the housing within the vicinity of a radial air gap between the armature and the housing.

Abstract: A rod or stem of an armature for an electromagnet is composed of a synthetic resin which can be molded directly in the armature, preferably with an annular flange forming an anti-adhesion ring.

Abstract: A compressor having an electromagnetically actuated valve is disclosed. The movement of the compressor's piston is controlled by an electromagnetically actuated valve. The valve includes an electromagnetic element having a core and a coil, and an armature. The core has a surface and an opening at the surface extending through the core. The surface also includes a continuous channel extending around the opening. The channel has a top portion of frustroconical cross-section and a bottom portion. The coil is disposed in the bottom portion. The armature element has a raised portion dimensioned to be received within the top portion of the channel. The valve shaft is disposed within the opening of the electromagnetic element and is connected to the armature. The compressor piston is connected to one end of the shaft. A support spring is disposed within the opening of the electromagnetic element, and extends from the retaining bar to the upper surface of the cylinder.

Abstract: A high speed solenoid valve that has a housing with an inlet and outlet that are typically connected to a pneumatic system to control the flow of air across the valve. The solenoid has a first magnetic core coaxial with an armature. Wrapped around the first core is a coil that is connected to a source of power. The coil emits a magnetic flux when current flows through the coil. Adjacent to the coil is a second magnetic core that is attached at one end to the first core and spaced from the opposite end of the first core by a first bushing. Attached to the armature is a magnetic plate that is adjacent to the spaced apart ends of the first and second cores. When the coil is energized, the magnetic flux flows through the magnetic cores and plate, pulling the plate toward the cores and moving the armature from a first to a second position.

Abstract: A rectilinear motion proportional solenoid assembly includes a cylindrical housing containing an electromagnetic coil having a longitudinal coaxial bore. The housing contains magnetic material for providing a flux path for the magnetic field produced by the coil. A generally cylindrical magnetic pole piece element is inserted into the bore and a movable armature assembly of magnetic material is supported within the bore for movement along the longitudinal axis of the coil by a pair of thin, flexible suspension springs. One of the springs is located within the bore adjacent to one end of the magnetic pole piece whereat an axial gap between the pole piece and the armature is formed. A second spring is located within the housing within the vicinity of a radial air gap between the armature and the housing.