Abstract: Devices for wireless charging with metal housings. The device comprises a wireless power receiving coil and an associated coil core, wherein the coil core defines a recess and at least a portion of the wireless power receiving coil is disposed in the recess; and a housing comprising one or more metal portions, wherein the housing is configured to receive at least a portion of the wireless power receiving coil and the associated coil core in an opening defined by the one or more metal portions. Alternatively, the device comprises a wireless power receiving coil and an associated coil core; a housing comprising one or more metal portions; and an alignment feature configured to interact with a magnet of a wireless charger to align the device with the wireless charger, wherein the alignment feature comprises a plurality of metal elements that are electrically insulated from each other.

Abstract: An electronic device includes a display and an input device. While in wireless communication with a set of peripherals that includes a first peripheral and a second peripheral, and in accordance with a determination that the first peripheral satisfies charging criteria that require that the first peripheral is coupled with the second peripheral, the electronic device: initiates charging of the first peripheral, by the second peripheral, to a first threshold charge level that is less than a charge limit of the first peripheral; and, in accordance with a determination that charging completion criteria for the first peripheral are met: initiates charging of the first peripheral, by the second peripheral, to the charge limit of the first peripheral.

Abstract: A watch-type mobile terminal comprises: a main body having a display unit mounted on the front side thereof; a band connected to the main body and wound around a wrist of a user; a battery mounted in the main body; and a wireless charging coil which is positioned in at least one of a side surface and the front surface of the main body and the band and has electric current flow according to a change in a surrounding magnetic field to charge the battery. The watch-type mobile terminal can be charged on the wrist of the user, without the need to be separated from the wrist, and can improve the charging efficiency by minimizing an electromagnetic wave which is influenced by the human body, since the watch-type mobile terminal is at a certain distance away from the wrist.

Abstract: A magnetic coupling system for electromagnetically connecting an electric device to a mounting system, including: a first interface comprising a first plurality of magnetic elements and a first induction coil defining a first central axis, the first interface connected to the electric device; and a second interface comprising a second plurality of magnetic elements and a second induction coil defining a second central axis, the second interface connected to the mounting system, wherein magnetic attraction between the first and second plurality of magnetic elements biases the first interface toward the second interface and transiently retains the first and second induction coils in a substantially coaxial relationship.

Abstract: An electromagnetic attachment apparatus includes a power supply, an electromagnet module, and a rotatable module. The electromagnet module includes a coil and a core positioned in the coil. A mounting panel is attached to the core. A pair of electrically conductive blocks is attached to the mounting panel, and connected to the coil. The rotatable module is rotatably attached to the mounting panel, and includes a pair of electrically conductive pins connected to positive and negative electrodes of the power supply respectively. The rotatable module is rotatable to a first position in which the electrically conductive pins thereof contact the electrically conductive blocks for attaching a metal object, or a second position in which the electrically conductive pins thereof disengage from the electrically conductive blocks for releasing the metal object.

Abstract: The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.

Abstract: An electromagnetic switch is provided which is equipped with a built-in electronic control circuit working to control energization of an exciting coil. The electronic control circuit is disposed within a chamber defined by a magnetic plate to be separate from a contact chamber. In other words, the electronic control circuit is disposed between the magnetic plate and the exciting coil, thereby avoiding the adhesion of conductive dusts, as arising from the wear of contacts, to the surface of the electronic control circuit. This results in decreases in electric insulation and short-circuit of the electronic control circuit and also eliminates the need for additional special parts to electrically insulate and shield the electronic control circuit, thus permitting the electromagnetic switch to be reduced in size and produced at a decreased const.

Abstract: The present invention is a magnetic chuck that is chiefly used for machining tools. The magnetic chuck has a structure in which an accommodation hole (110a) is formed to pass through a chuck main body (110), a first magnetic element (141) is exposed in the direction of the top surface of the chuck main body (110), and an AlNiCo magnet (120) is exposed in the direction of the bottom surface of the chuck main body (110), so that respective objects (200 and 300) to be attached can be attached to two opposite surfaces of the magnetic chuck (100), with the result that the magnetic chuck (100) can be used in various ways. Furthermore, the lateral part (112) of the chuck main body (110) is not unnecessary, so that the weight of the magnetic chuck (100) itself is greatly reduced and thus the product cost is reduced, the thickness of the magnetic chuck (100) is reduced, and convenience of use can be greatly improved.

Abstract: An exemplary magnetic clamp holder used for a mechanical arm, includes a housing (21), a magnetic structure (22), and two positioning pins (25). The housing includes an attaching portion (211), and a joining portion (213) fixed to the attaching portion, the attaching portion and the joining portion cooperatively defining a receiving cavity (218). The positioning pins are disposed on the attaching portion of the housing. The magnetic structure is received in the receiving cavity. The magnetic structure includes a permanent magnetic module (223), an electro-magnetic module (225), and a magnetic shield plate (227) disposed between the permanent magnetic module and the electro-magnetic module. The electro-magnetic module is able to create a magnetic field for neutralizing a magnetic field created by the permanent magnetic module.

Abstract: A composite sealed vessel is provided. The vessel includes a non-metallic, generally cylindrical inner containment piece, a non-metallic, generally cylindrical outer containment piece disposed around the inner containment piece. A pair of non-metallic flanges are disposed at ends of the inner and outer containment pieces to form a closed structure defining a cavity therein. The vessel also includes a metallic external lining disposed over the closed structure to form a leak-tight pressure boundary.

Abstract: A solenoid assembly (23) includes a coil assembly (65) having at least one coil winding (73) and an electronic circuit assembly (67), which is in electrical communication with the coil assembly (65). The electronic circuit assembly (67) has a printed circuit board (79) and at least one electronic component (81), which is surface mounted on the printed circuit board (79). A coating material (85) coats all of the plurality of external surfaces of the surface-mounted electronic component (81). A casing (87) over-molds an outer longitudinal surface (77) of the coil assembly (65) and all of a plurality of external surfaces of the electronic circuit assembly (67).

Abstract: The magnetic fixing device comprises a clamping plate having a fixing surface to which a clamping object is fixed and plural magnetic force generation mechanisms. The magnetic force generation mechanisms each comprise a magnetic material member facing the fixing surface, plural permanent magnets arranged around the outer periphery of the magnetic material member, a first Alnico magnet placed on the back of the magnetic material member, and a first coil for switching the polarity of the first Alnico magnet, and can be switched between the absorption state in which the clamping object is adsorbed and the non-absorption state in which the clamping object is not adsorbed. An operation state indication mechanism capable of presenting an indicator indicating that the plural magnetic force generation mechanisms are in the absorption state or in the non-absorption state is provided on the fixing surface or outer periphery of the clamping plate.

Abstract: A magnet encapsulated within a canister formed from two cans into a laminated structure particularly useful in plasma processing reactors. Each can includes an end wall and a cylindrical sidewall. One can additionally includes an annular lip that slidably fits outside the sidewall of the other can with a small gap therebetween. The magnet is inserted into the two cans together with a flowable and curable adhesive such as epoxy. The cans are slid together and compressed to cause the adhesive to flow between the magnet and the two cans and between the lip of one can and the sidewall of the other. The adhesive is cured to bond the magnet to the cans and to bond the cans together and to also hermetically seal the structure. The cans may be deep drawn from non-magnetic stainless steel with wall thicknesses of less than 0.064 mm.

Abstract: A switch type ON/OFF structure for hoisting magnetic disks has a handle turnable towards one side to demagnetize and towards another side to generate a magnetic force to attract and move a work piece. The handle is hinged on one end surface of a hoisting magnetic disk which also has a first detent member and a second detent member. The first and second detent members can stop the turning of the handle. The handle further has an extensible latch member at one side spaced from the handle at a selected interval. The latch member has a distal end slidable over the second detent member and extendable downwards to allow the second detent member to be wedged in the interval and anchored. Thereby the hoisting magnetic disk can provide the magnetic attracting force and hoist and move the work piece safer.

Abstract: The electromagnetic clamp and method includes an electromagnet and a clamping piece located on opposite sides of a structure to clamp the structure. The electromagnet attracts the clamping piece through the structure when the electromagnet is energized, such that the electromagnet and clamping piece exert force on the structure, and an operation, such as drilling and/or fastener installation, may be performed on the structure. The configuration of the electromagnet creates the force necessary to securely clamp the structure. The electromagnet includes a coil and a core, and the core of the electromagnet is located within a longitudinal aperture that extends through the coil. The smallest lateral dimension of the core is chosen to maximize the flux density between the core and the clamping piece. As such, the smallest lateral dimension of the electromagnet may be greater than the distance between the clamping piece and the electromagnet.

Abstract: A magnetic device includes a cylindrical outer pole having a central axis and formed of a ferromagnetic material including a circular base and a cylindrical sleeve defining an outwardly opening cylindrical cavity. A reversible magnetic unit located in said cavity includes a cylindrical core having a magnetic axis aligned with the central axis and a normal magnetic polarity in an inactive state. A cylindrical inner pole formed of a ferromagnetic material is operatively coupled to the core and inwardly radially spaced from said sleeve. An annular band between said sleeve and said inner pole formed of a permanent magnetic material has a magnetic polarity transverse to said central axis and magnetically aligned with said normal magnetic polarity of the core whereby an internal magnetic circuit is established in the inactive state through the poles, the core and the permanent magnet to the exclusion of said workpiece.

Abstract: A material moving system is disclosed for use in a plant such as a metal foundry. There is an overhead gantry for moving a main hook and auxiliary hook. The main hook carries a container such as a scrap charge bucket. The auxiliary hook carries a multi-function auxiliary tool such as a magnet with a tool hook affixed to the magnet. The scrap charge bucket carries a target member on a saddle on the outside of the bucket. The bucket also has a hold out stand that positions the target member for easy accessibility. The target member is attached to actuator cables that are attached to clam shell bottom members of the scrap charge bucket. The auxiliary tool may be used to lift and pull the target member to open the clam shell members without removing the magnet from the auxiliary hook, saving time. The hook on the magnet is positioned so that the hook does not damage the scrap metal bins or electric arc furnaces when the magnet is used for its usual purposes.

Abstract: Disclosed is an electromagnet design that can be quickly disassembled, repaired, and reassemble. In one embodiment the electromagnet comprises a housing having a housing cavity. Carved or molded into the housing is a pair of opposing slots. An electromagnetic core comprising a ferromagnetic material wrapped with electrical wire is disposed within the housing cavity. A pair of braces are lodged within the slots in the housing cavity such that they overlap the electromagnetic core. A center shoe engages the braces and is secured to the housing by six bolts. The slots, braces, and center shoe design cooperate to secure the electromagnetic core within the housing cavity.

Abstract: A drive device with an electric motor with permanent magnets and a pole top more particularly for use with servo drives in motor vehicles. A relay is provided for switching the motor current with at least one electromagnet, which contains a relay coil and a relay armature, and with at least one relay contact. The relay is mounted in the pole top of the electric motor and the magnetic field lines of the electromagnets are closed through the permanent magnets and the pole top of the electric motor.

Abstract: A vehicle mounted electromagnetic jack system attachable to a vehicle for lifting portions or all of a vehicle. The system includes four electromagnetically operated jacks, a main console located within the vehicle, which operates each jack selectively or all collectively for total lift. Each jack consists of a pair of electromagnets proportionately spaced wherein the lifting force is provided by the coupling intensity of the magnetic flux field propagated from each electromagnet, having confronting poles of like polarity, wherein the well-known repelling effect between like magnetic poles urges the poles apart to furnish the lifting force. Current controlled by the Control Panel, located within the vehicle, reverses the current to the Lower Electromagnet, causing a 180.degree.

Abstract: An electric lifting magnet includes a casing that is fabricated entirely from components such as, for example, structural steel that are welded together. In particular, the lifting magnet includes a flat top plate that is stiffened and supported by a frame that is welded to the top plate. The frame includes a plurality of stiffeners that extend from the center of the top plate to the radially outer edges of the top plate, the stiffeners being welded together at the center of the top plate. The stiffeners are shaped and arranged on the top plate so that the frame that they form can bear the entire load that the lifting magnet is designed to withstand.

Abstract: An apparatus for locking doors and gates is disclosed. The apparatus generally comprises a housing containing a permanent magnet and an electromagnet for locking and unlocking the door or gate and contact means on the door or gate for engaging the permanent magnet in order to lock the door or gate. The electromagnet, when energized, has a magnetic field opposing the magnetic field of the permanent magnet to magnetically disengage the permanent magnet from the contact means.

Abstract: Permanent magnetic retaining device to move, affix or carry ferromagnetic parts or load with electronic switching of the magnetic flux to release the carried load includes a central iron core enclosed by a pair of magnet blocks secured by iron shoes, laterally joined to reinforcing plates and terminated by lateral poles with one or more compensator coils being disposed on the central core, with a sliding cover above the former, moving on a pair of guide pins surrounded by mechanical force gauges, the cover being centrally provided with a lifter eyelet. An electronic control circuit is incorporated externally in one of the side walls of a rectangular enveloping overcover wherein, at the opposite side thereof, a sensor of the electronic circuit is incorporated, to be operated manually and/or by remote control.

Abstract: A magnetic gripping apparatus for gripping metal parts on machine tools, conveyor systems and the like. The apparatus comprises an external ferromagnetic yoke having a base plate and lateral walls; a first and at least a second pole unit, each unit comprising a main pole piece having an outer face defining a work-gripping surface parallel to said base plate; and an intermediate pole member between said first and second pole units, said pole member extending from the base plate to the gripping surface, and permanent magnets arranged at least between the main pole pieces, the base plate and an electric winding encirling the magnets between the main pole pieces and the base plate, said permanent magnets, in an activated condition of the apparatus, providing a pole distribution on the gripping surface in which said first and second pole units exhibit poles of opposite polarity on their outer faces.

Abstract: A device for magnetically holding workpieces to be machined on machine-tools has a magnetic field source (3, 4) and, disposed thereon, a plate (5) whose side adapted to support workpieces (I) has recesses (6) intended to define magnetic poles. The plate (5), in its side facing the magnetic field source (3, 4), has auxiliary grooves (7) shifted with respect to the recesses (6) in such a manner that the distance (b) from the bottom of the recess (6) surface of to the of the plate (5) facing the magnetic field source (3, 4), the distance (a) between the recess (6) and auxiliary groove (7), and the overlap (c) between the recess (6) and auxiliary groove (7) are substantially equal to one another.

Abstract: An electromagnet having a 360.degree. flux pattern for attracting magnetizable items over the entire surface area of the magnet is disclosed. The electromagnet includes an outer casing having a circumferential portion constructed of non-magnetizable material, a core portion of magnetizable material, and a means for generating magnetic flux lines contained within the casing. The core is disposed generally radially within the coil and includes an inner core portion and a first magnetic pole portion extending axially from the coil. The first magnetic pole comprises a bottom wall depending from the inner core and being radially coextensive with at least a portion of the coil. The core also includes a second magnetic pole portion extending axially from the coil opposite of the first magnetic pole portion and comprising a top wall depending from the inner core which is radially coextensive with at least a portion of the coil.

Abstract: A lifting magnet assembly is disclosed which has a permeable magnetic case with a central core and an outer peripheral wall. Electrical winding means surrounds the coil and is inside the outer wall. A composite magnetically permeable case top is provided in the magnet assembly, the composite case top including a cast steel member and a uniform thickness top plate welded together. The composite case top is welded to the core and to the outer peripheral wall, and the cast steel member is generally in the form of a spider with a plurality of arms extending from a central annular portion. This cast steel member performs the triple function of stiffening the steel top plate, providing the connector means to the lifting chain, and providing a flux path supplemental to the top plate for the magnet flux. A single size of cast steel member may be used for a plurality of sizes of magnet assemblies.

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: A terminal box for a lifting magnet has a bottom mounting surface to be secured to the casing of the lifting magnet over a pair of apertures in the casing through which the coil conductor leads pass. An arcuate protective shield of the box extends upwardly from the outer edge of its bottom surface adjacent to the outer edge of the magnet casing and from the side edges of the bottom mounting surface. The protective shield slants inwardly from the outer edge of the magnet as it extends upwardly from its base. A winged housing of the box has a top surface recessed below the upper edge of the shield. Internally, the housing is divided by a walled divider in the shape of an "H" into individually sealable chambers two of which are in communication with openings in the bottom mounting surface. The openings in the bottom mounting surface are spaced to correspond to the apertures in the casing.

Abstract: A cooled magnet is disclosed for lifting magnetic materials with incident savings in the cost of energy. The magnet comprises a dome-shaped metal case open to the atmosphere under the case, and, for producing a magnetic field, a continuous hollow conductor electrical winding removably disposed on a central core within the metal case. The metal case and central core are each provided with a radial slot in a vertical plane to inhibit the build-up of eddy currents. The hollow conductor offers an electrically continuous path, but is preferably so constructed as to provide a fluid discontinuous path for a cooling medium circulated within the hollow conductor.The dome-shaped metal case includes an inverted dished housing and a reinforcing cap member. The dished housing and cap member are fabricated from plural arcuate steel shells of predetermined configuration, superposed and nested one upon another in unimpeded magnetic communication with the central core.

Abstract: A lifting magnet has lengths of sealed plastic tubing positioned circumferentially of its coil prior to its encapsulation in a magnet case. The tubing is hermetically sealed every few inches along its entire length in order to divide the tubing into individually sealed segments. The sealed segments form compressible air spaces at the outer periphery of the magnet coil which permit thermal expansion of the coil and the encapsulating material without substantial force being applied by the coil and the encapsulating material to the magnet case. In the event any one or a few segments of the tubing are perforated or otherwise disabled in the course of fabrication or assembly of the magnet, the balance of the sealed segments still serve their intended purpose.

Abstract: An electro-magnet or chuck for lifting scrap metallic particles, comprising a housing essentially of magnetic material. Enclosed are a plurality of spirally wound, superposed coils. Each coil has a central portion which is wound as a bimetal, that is, one winding having magnetic properties, such as an iron winding, and the other, non-magnetic, such as an aluminum winding in series with an outer winding portion of non-magnetic turns. The housing has an annular bottom portion of durable non-magnetic material, such as stainless steel, which is magnetically bridged by scrap magnetic particles being lifted.