Abstract: A solenoid assembly includes a coil bobbin having a pair of hooks extending in the longitudinal direction of the bobbin from a flange formed on one end of the bobbin and projecting radially outwardly from the axis of the bobbin at the ends thereof. A magnetic yoke having openings for receiving the hooks and a grommet having a base portion in contact with the magnetic yoke are seucred together by the hooks. The grommet has a neck portion extending in the axial direction of a magnetic core and a central opening for a lead wire to a coil on the bobbin. The magnetic yoke is fixed to one end of the magnetic core which is located in a central opening formed in the coil bobbin. A plastic casing is then molded about the entire assembly.

Abstract: A solenoid-operated switch for a starter comprises a movable contact driven by the action of a solenoid and a stationary contact facing the movable contact. An iron plate covers an area where the movable and stationary contacts are mutually brought to contact.

Abstract: A solenoid-operated valve has its body formed from a plain length of pipe substantially free of any machining or shoulders. The armature and seating are inside, with the armature moving axially, and the solenoid coil is slid over the outside of the pipe. There could be a by-pass and two valves, one with a by-pass and one without, could be mounted in series in a common length of pipe.

Abstract: The invention provides an electromagnetic actuatable device including at least one current carrying winding having electrical terminals for applying voltage thereacross and a ferrymagnetic member configured to provide a closed magnetic flux path for magnetic flux induced by the winding when voltage is applied thereto. The member is at least partly disposed within the winding and has means locatable at least in proximity to the winding for modifying magnetic field intensity therethrough. One of the windings or members is adapted to be immobilized with respect to the other so that upon the application of voltage to the winding the non-immobilized winding or member is movable with respect to the other as a result of the force developed by the induced flux.

Abstract: This invention relates to an improved solenoid operated fluid control valve particularly adapted for use as a vacuum control switch in a motor vehicle. One aspect of this invention is the provision of a coil assembly adapted to be wound and terminated using completely automated processes. This feature is provided through the use of a bobbin structure having protruding coil winding posts which position the start and finish ends of the coil wire. Terminal members are installed onto the bobbin and have terminal contact portions which can be folded onto the wire. Another feature of this invention involves means for reducing noise generated from actuation of the valve device. In conventional solenoid employing a "C" frame member, direct mechanical contact exists between the "C" frame member and another component of the magnetic circuit of the solenoid.

Abstract: A refrigerant reversing valve assembly comprising a refrigerant reversing valve including a fluid pressure actuable reversing valving member for reversing the direction of refrigerant flow in a refrigeration system, a pilot valve unit for controlling actuation of the valving member comprising a pilot valve housing in fluid communication with the reversing valving member, an actuable pilot valving member in the housing, and pilot valve actuating means comprising a pilot valving actuating member plunger coupled to the pilot valving member, a guide tube surrounding the plunger connected to the pilot valve body and projecting therefrom, and a solenoid surrounding the guide tube for actuating the plunger, and supporting structure for interconnecting the reversing valve and the pilot valve unit.

Abstract: In a relay which has a coil body as a base body, an insulating cap of foil material is inverted over the wound coil body. The insulating cap is adapted to the outer contour of the wound coil and having a semi-cylindrical center section covering the upper half of the winding and pockets adapted to the coil body flanges. As a result thereof, the insulating cap is provided with good stability and is therefore protected against deformation and damage.

Abstract: An electromagnetic relay includes a coil having a winding between two coil flanges wherein one of the coil flanges forms a pocket-shaped contact chamber. An angled yoke is provided for the coil on which is seated a flat armature that is secured by an armature retaining spring. Male retaining members extending from the angled yoke mount the retaining spring and can be bent to set the armature restoring force. Separation of the moving parts of the relay at an end face of one coil flange from the winding enables casting compound to fill the winding space and seal the contact chamber.

Abstract: A solenoid actuator including a coil of electrically conductive wire wound about an axis, an enclosure for the coil, a receptacle carried by the enclosure for accommodating a mounting member of a device to be controlled by the solenoid actuator, a slideway carried by the enclosure extending transverse to the coil axis, and a fastener movable within the slideway for latching and unlatching the enclosed coil to the device to be controlled. The coil enclosure is a plastic encapsulation, the receptacle is an opening in a surface of the encapsulation, and the slideway is a chamber within the encapsulation intersecting the recess. The mounting member, which may be secured to a core tube within which the movable armature of the solenoid actuator is located, has an annular slot, and the fastener is a clip formed of sheet metal having edges which slide into the slot to latch the enclosed coil to the mounting member.

Abstract: A solenoid arrangement including a coil of electrically conductive wire and a yoke of magnetic material surrounding the coil. The coil is completely encapsulated by a thermosetting resin, the resin being located between the coil and the yoke, and the yoke being encapsulated by a thermoplastic resin. Preferably, the thermosetting resin is an epoxy resin, and the thermoplastic resin is nylon. The yoke includes a side wall extending around the entire periphery of the coil, a top wall, and a bottom wall, the side, top, and bottom walls forming a box-like housing which substantially completely encloses the coil. A stationary armature extends from the top wall of the yoke into the center of the spool upon which the coil is wound, and a sleeve for accommodating a core tube extends from the bottom wall into the center of the spool.

Abstract: An electromagnetic switch for a starter motor is disclosed in which powder produced by friction from repeated opening and closing of the stationary and movable contacts is prevented from entering in between the sliding parts of the movable iron core assembly, thus ensuring the smooth sliding motion of the movable iron core assembly at all times, and in which the penetration of external water into the space defined by the stationary and movable iron cores and the shaft member is effectively prevented thereby to avoid various troubles resulting therefrom.

Abstract: A solenoid valve assembly includes a valve body and an outwardly extending core tube assembly comprising a core tube, a fixed pole piece and a slidable plunger for actuating a valve in the valve body. An electromagnetic coil assembly comprising a flux frame and cylindrical coil is slidably and removably supported on the core tube and is secured in place by a contractible ring with a shoulder engaged in a groove in the outer end of the core tube. The ring is an injection molded plastic part and is split, having a tongue and socket interconnection with plural ratchet teeth thereon to provide adjustable constriction of the ring. A pair of integral spring fingers are provided on opposite sides of the ring to axially bias the coil assembly against the valve body.

Abstract: An improved solenoid is disclosed. The improvement consists of injection molding one or more components of the magnetic return circuit of the solenoid, particularly the magnetically permeable can, from a polymer having a filler of soft magnetic material at preferably a 20-63% by volume loading level. The injection molded polymer filled solenoid has higher efficiencies than expected based on the decrease in total metal content.

Abstract: A gas solenoid valve comprising a magnetic circuit formed with a fixed iron core, magnets and a magnetic member; a coil-holder movably provided with respect to the outer periphery of the fixed iron core and having a magnetic coil wound around itself; a sleeve accommodated within the magnets and spaced apart from the outer periphery of the fixed iron core for a predetermined distance; an actuating portion formed with the fixed iron core; the fixed iron core, the magnets and a magnetic member all fixedly covered with a molding resin from outside; and a governing portion engaged with the actuating portion.

Abstract: A polarized electromagnetic relay apparatus for assembling a coil spool with a terminal carrying base plate is disclosed. The coil spool assembly has a front collar with a projecting piece. The projecting piece is adapted to engage with a latch hole in the terminal carrying base plate. The terminal carrying base plate has jaw-like, offset portions which engage with supporting offset portions formed in the rear collar of the coil spool assembly. The flexible projecting pieces may be of deformable material in order to easily engage with the latch hole of the base plate. The flexible projecting pieces can be tapered, also to facilitate engagement with the base plate latch hole. A terminal holder is formed on the rear collar of the coil spool assembly and is adapted to receive terminals from the coil. The terminal holder comprises the supporting offset portions which engage with the jaw-like offset portions of the base plate. The terminal holder is of a greater thickness than the base plate.

Abstract: The invention relates to apparatus for separating ferromagnetic particles from a slurry, in which the slurry passes through a tunnel-shaped channel which is surrounded by a magnet coil the iron yoke of which is constructed asymmetrically in such a way that the magnetic field strength in the channel increases from the top towards the bottom.

Abstract: A solenoid assembly comprising a magnetic plunger, an electric coil for generating a magnetic flux in a direction along an axis of the magnetic plunger, a main yoke composed of at least two separate members for defining a magnetic flux passage around the electric coil, and a pair of yoke end members held in engagement respectively with opposite ends of the main yoke, an outer casing. The yoke end members have recesses extending substantially normally to the axis of the magnetic plunger, and the main yoke has projections fitted respectively in the recesses to maintain the main yoke and the yoke end members in engaging relationship. The outer casing has an inner wall keeping the main yoke held in engagement with the yoke end members. A leaf spring acts on the main yoke to hold the latter securely in place in the outer casing. The yoke end members have cylindrical projections supporting thereon the electric coil between the projections of the main yoke.

Abstract: A cartridge solenoid poppet valve (10) arranged to use a single size pilot valve (31) with any one of a set of a plurality of different size sets of valve seat members (14) and poppet valves (24). Pilot guides (175) are provided having different transverse extents to accommodate such different size valve members. The valve further includes a flatted pilot guide (32) defining flow passages communicated between a transfer chamber (35) and a pilot valve chamber (30) in which the pilot valve (31) is disposed. A T-slot (58) is provided in the solenoid plunger (38) extending fully diametrically thereacross and the pilot valve includes a T-shaped connecting head (71) received therein. The plunger (38) and plug (41) define cooperating stop surfaces (67,70) for maintaining a small spacing between the plunger and plug at all times. Solenoid structure (53) includes a parallelepiped frame (46) defining a space with the solenoid coil (44) received therein.

Abstract: The present invention comprises an electromagnetically operated hydraulic valve device (10) providing an almost instantaneously responsive displacement of a ball valve (60) in order to effect fluid flow relative thereto. Hydraulic valve device (10) comprises a generally cylindrical housing (12) having one end (16) open and a bushing (19) extending from the other end (18), with a plurality of longitudinal openings (14) disposed about the perimeter of housing (12). A cylindrical bobbin (30) having an interior through opening (32) is disposed within housing (12) and supports an electrical winding (34), with a core member (20) enclosing the open end (16) of the housing and having a circular post (22) extending into the bobbin opening (32). A nonmagnetizable sleeve (38) is located within the interior of bushing (19) between the bushing and a cylindrically shaped armature (36).

Abstract: A leakproof electromagnetic relay in which a pourable sealing compound is introduced into the interior of the lower housing of the relay. A recess is formed in at least one sidewall of the housing through which the sealing compound is poured. The compound distributes itself equally on the bottom of the housing and flows into the separating points or gaps of the housing by capillary action. A cover closes the recess after the compound has been poured in. The invention permits the relay to be sealed in its upright position and further processed.

Abstract: An activating magnet, particularly a stroke magnet, has a magnet housing (15) which closely surrounds the periphery of the coil (7) and abuts the spool (8) thereof. An armature (1) is arranged within the coil so as to be axially moveable therein, and a pressure-proof junction box (38) is rigidly connected with the magnet housing in which the connections (24) for the coil are located. In order to create a much simpler and more economical construction for a pressure-proof pole tube (3,4,6) on which the coil is arranged. The magnet housing is pressure-proof and abuts the pole tube on both sides of the coil, and a pole core (5) is penetrated by the activating ram (2), whereby the pole core on one side and the magnet housing on the other side are rigidly connected with each other by means of a connecting means (22).

Abstract: An actuating magnet, particularly a direct current electromagnet, has a cylindrical magnetically permeable shell or cover made from a rectangular sheet of metal bent into a square cylinder, the edges of the sheet forming a gap. Pole plates on the ends of the shell have recesses on their edges to receive projections on the shell. The pole plates have recesses in the corners, leaving the corners uncovered to receive fastening screws.

Abstract: A solenoid actuator for use with an electromagnetic valve which includes a magnetic frame for establishing a magnetic circuit around an energizing coil, which is formed by bending a sheet-like magnetic frame constituent plate with an eddy current eliminating slit being defined therein, thereby enabling simplification in structure of the magnetic frame, effective utilization of electric power and reduction in the magnetic resistance, and attaining inexpensive fabrication, great electromagnetic force with electrical power-saving and small magnetic loss.

Abstract: A solenoid assembly, as for use in an electromagnetic fuel injector or similar valve assembly, and a method of making the same wherein a cylindrical pole piece is positioned in and fixed at one end to an apertured, cup-shaped solenoid housing so as to initially support and center a bobbin and solenoid coil assembly which is then secured in fluid tight relationship to the solenoid housing by an encircling encapsulant member molded in place.

Abstract: A magnetic circuit for a miniature relay comprising a coil carried by a magnetic frame and an armature adapted for movement in response to energization of the coil to close an air gap between the armature and a pole face of the frame. A portion of the frame comprising a pair of supporting legs is sufficiently close to a core face portion of the frame to define a fringing flux path tending to divert flux from the useful flux path including the armature, air gap and frame. A barrier is provided in the fringing flux path of a material creating sufficient reluctance in that path to resist flux flow therethrough thereby increasing flux flow in the useful flux path to increase relay efficiency. The barrier can comprise non-magnetic material in the supporting legs, in the core face or in both.

Abstract: In an electromagnetically operated valve unit, a stationary core and a spring loaded moving-core are coaxially arranged within an axial bore extending across a lateral plate member of magnetic material, and a U-shaped yoke member of magnetic material has a head portion engaged with the stationary core and a pair of longitudinal arms which are supported by the opposite ends of the lateral plate member and fastened to a bracket. The lateral plate member is formed at its opposite ends with a pair of arms which are engaged with each outer face of the respective arms of the yoke member to uniform a magnetic path of the solenoid coil across the cores, the lateral plate member and the yoke member.

Abstract: A housing for an electromagnetic relay is disclosed which has the shape of a trough and is closeable by means of a flat cover. For fastening the cover on the housing, two holding lugs are shaped on the housing. The mounting of the cover proceeds by means of insertion under the holding lugs.

Abstract: An electromagnetic relay is disclosed having a ground connection in the form of a bent lead wire soldered on to an end of the asembly on an exterior side of the yoke. A base member of the relay, which comprises insulating material, has on its exterior side grooves in which the bent lead wire is guided from the housing to a pattern point on the connection side. It is thereby possible to manufacture the relay in the normal case without a ground connection and, where required, to subsequently apply the ground connection.

Abstract: An electromagnet and a method for the fabrication thereof are disclosed. The electromagnet is characterized by a coil form having a relatively thin wall whereby the winding thereabout is as close as possible to a portion of the magnetic circuit. The method of this invention provides for the insertion of magnetic hollow bodies into a coil form prior to winding the coil thereabout.

Abstract: To provide for effective sealing of the solenoid coil structure with respect to fluid, the flow of which is to be controlled, a sleeve with a closed bottom, preferably integral with the sleeve, is inserted in the coil, and is in gap-free engagement with a core portion extending into the opening of the solenoid coil, a plunger-type armature being movable within the sleeve. The outer portion of the sleeve is sealed to the housing, for example by a solder connection, so that the interior of the solenoid is separated in liquid-tight relationship from the interior of the sleeve to prevent contamination of the space containing the winding by fluid being controlled by the valve. The housing, at the outside, may be formed with a groove in which a sealing ring is located to seal the housing to a pump assembly with which the valve is to be used.

Abstract: Low cost tubular solenoids are formed with a drawn case in which the pole portion forming the base of the solenoid is defined as an integral inwardly extending part of the case. A coil bobbin is formed by the injection molding of plastic material and is provided with an integral wall which is positioned in abutting relation to the inside surface of the pole portion, thereby forming a stop surface for the solenoid plunger and effectively spacing the plunger from the base. The plunger is guided on the internal surfaces of the bobbin and in one embodiment, a spun hollow sheet metal bushing is captured by the case in telescopic relation to the bobbin, and is formed with threads which receive thereon a sheet metal retaining nut. In another embodiment of the invention, a washer is threaded onto an axial extension portion of the bobbin, and the open end of the case is crimped onto an annular groove formed on the washer. In a further embodiment, the washer is injected molded in place on the bobbin.

Abstract: A solenoid assembly for high-temperature service having a flanged housing, cover plate, and coil bobbin molded from high-temperature resistant thermosetting plastic. The coil terminals are located over lug projections integrally molded into the flanged portion of the housing to prevent pull-out. The coil bobbin is received in the housing and the cover plate interlocks axially thereover to capture the coil bobbin therein. The components are retained as an assembly by a surrounding pole frame.

Abstract: An electromagnetic relay is described of the type wherein, upon energization, an armature, while being attracted to a yoke, is repelled by a flux plate and wherein parts of the magnetic circuit are utilized for electrical conduction. A coil form and plug-in shaft are provided for holding the relay windings and the magnetic circuit parts. Projections are provided for defining the position relationships between the relay windings and the magnetic circuit parts.

Abstract: An electromagnetic relay installed in an automobile. In this electromagnetic relay, a casing to house an electromagnetic coil therein is used as part of a magnetic circuit for reducing the size and weight of the electromagnetic relay. By doing this, there may be provided an electromagnetic relay whose construction is well adapted for use in automatic mechanical assembly of the relay.

Abstract: A relay structure especially for miniature relays in which the armature part is held in place with respect to the electromagnet by means of shoulder pieces projecting within the relay housing. The housing and shoulder pieces may be made of a thermally softenable material, such as a "thermoplastic," so that the assembly may be heated and mechanically deformed to adjust clearances as a part of the final assembly process. Two versions of a flap or leaf spring for extra retention of the armature part are shown.

Abstract: An electromagnetic valve assembly of the type having a tube for guiding the plunger armature which tube also supports the surrounding coil unit. A U-shaped yoke surrounds the coil and a housing is provided. The tube, which is attached to a valve casing, has an annular recess at the opposite end for receiving the slotted ring of a ring and nut pair which uses the tube as an abutment for biasing the yoke and the housing towards the valve casing. A lock ring is between the slotted ring and the yoke which has a first lug in a slot of the slotted member and a second lug in a recess in the housing to prevent relative rotation between the slotted ring and the housing.

Abstract: An improved bobbin and cover assembly for use in the manufacture of an electrical solenoid includes internal centering lugs for the hollow core bobbin which position the solenoid core. Ridges are integrally molded in the end flange of the bobbin and cover for cooperation with a solenoid field assembly to provide insulation of the field assembly from the leads and to provide for centering of the field assembly.

Abstract: A solenoid of the wet armature type for operating valves has the usual closed end tube within which a stationary pole piece and a slidable armature are mounted with a push pin extending through the pole piece. A bobbin-mounted energizing coil surrounds the tube. A generally barrel-shaped housing surrounds the coil and the tube. The housing has thick walls and is formed of magnetically permeable material to provide a low reluctance path extending substantially completely around the outside of the coil and along its two ends. The housing is formed in the plurality of sections spaced from one another along axial planes and clamped together against the tube by clamping members at either end. The housing is provided with conical clamping surfaces. The housing members are formed from sintered powdered magnetic iron.

Abstract: A buzzer structure, of the type comprising a housing having a coil unit therein and an armature mounted for vibratory movement adjacent the coil unit, includes in one embodiment an integral portion of the housing which is bent inwardly into engagement with the coil unit to fix the spacing between the coil unit and housing, thereby to determine the dimensions of the gap between the coil unit and armature. In a further embodiment, the coil unit is mounted directly to a deformable, integral part of the housing which is bent inwardly to fix the spacing between the coil unit and an adjacent diaphragm.

Abstract: An electromagnet is secured to a base and has a winding with ends electrically connected to conductive brackets which are mounted in a housing. The brackets have extending means, such as tabs, flaps, and the like, engaging edge portions of the base to secure the base to the housing.

Abstract: An all ports in body, solenoid operated valve assembly includes a valve body and a valve operator mounted on the body with an electromagnetic core featuring a center leg projecting axially beyond the solenoid coil. A plunger and seal assembly is mounted for reciprocation along a path of movement aligned with the core center leg. The plunger and seal assembly is remotely located from the coil and all flow passages are formed in the assembly such that fluid flow through the center of the coil is excluded to minimize heat transfer to the confined fluid being controlled when the valve is electrically energized and to prolong the orifice seal life of the assembly.

Abstract: This stapling machine has mechanical means to block the path of the staple plunger to prevent a staple driving operation unless the stapler is on a work piece in position to drive the staples into the work piece. The magnetic coil comprises a pair of inner and outer bobbins of high heat resisting, electric insulating material, with a barrier bobbin in between said pair of bobbins, to keep whatever might break down one of said pair of bobbins from breaking down the other of said pair of bobbins, to thereby protect electrical components of the electro-magnetic stapler. The lower end of the armature controlled by the electro-magnetic coil of the stapler, has a conical cavity at its lower end movable to a position receiving but not contacting a conical core at the lower end of the coil, to give extra power to the armature because of greater magnetic surface between the armature and core and yet preventing actual thrust contact blows between the armature and core, which might damage the stapler machine.