An object is to provide a lifting-magnet attachment magnetic pole unit, a lifting magnet, a steel material conveying method, and a steel plate manufacturing method with which only one or a desired pieces of steel materials can be held. The present invention is a lifting-magnet attachment magnetic pole unit for a lifting magnet used to lift and convey a steel material with magnetic force. The lifting-magnet attachment magnetic pole unit includes a first split magnetic pole that is in contact with an iron core of the lifting magnet and has a branched structure, and a second split magnetic pole that is in contact with a yoke of the lifting magnet and has a branched structure. The first and second split magnetic poles are alternately arranged.

The invention describes a device suspension arrangement comprising a ceiling region, at least one mobile device comprising a ceiling interface with at least one freely rotatable element arranged to partially protrude from the ceiling interface to facilitate movement of the suspended device to an arbitrary ceiling position; and at least one magnetic field generator realised to generate a magnetic field between the ceiling region and the ceiling interface of a mobile device. The invention further describes a mobile device for use in such a device suspension arrangement.

An electromagnetic apparatus includes a non-magnetic body structure above a substrate. The electromagnetic apparatus further includes at least one isolation structure including a dielectric material on a portion of the body structure and a magnetic structure having two separate portions, one on each side of the isolation structure. A first magnetic structure portion is on a first sidewall of the isolation structure on an upper surface and on a first sidewall of the body structure and a second magnetic structure portion is on an opposite second sidewall of the isolation structure onto an upper surface and on to a second sidewall of the body structure. The electromagnetic apparatus further includes an electromagnet on a side opposite to the isolation structure. The electromagnet is coupled with the magnetic structure and is a source of the magnetic flux lines when energized.

A holding tool to handle a first permanent magnet in a stack of permanent magnets is provided. The holding tool comprises a body including a holding portion including an electromagnet, and a switch disposed on the body and electrically connected to an electrical circuit of the electromagnet and configured to energize the electromagnet by connecting the electrical circuit and de-energize the electromagnet by disconnecting the electrical circuit. The holding portion includes a hollow member made of ferromagnetic material and a coil surrounding the hollow member to form the electromagnet and the electromagnet is configured to, when energized in a first current direction, have a polarity opposite to a polarity of the permanent magnets in the stack.

A magnetic transfer module adapted to transfer a plurality of electronic elements. The magnetic transfer module includes an electromagnet and a plurality of transfer unit. The transfer units are connected to the electromagnet, each of the transfer units includes a ferromagnetic material element, and at least one of the transfer units includes a heating element. The electromagnet magnetizes the ferromagnetic material element, such that the ferromagnetic material element magnetically attracts one of the electronic elements. The heating element is disposed between the electromagnet and the ferromagnetic material element, and heats the ferromagnetic material element to demagnetize the ferromagnetic material element while being actuated.

A system comprising a solenoid electromagnet for generating a magnetic field and a driver circuit coupled to the solenoid electromagnet for modulating the magnetic field generated by the solenoid electromagnet. The magnetic field generated by the solenoid electromagnet of the present invention exhibits improved control over the direction and projection of the generated magnetic field. The generated magnetic field has the ability to detach permanent magnets from metal plates, cause motion of permanent magnets and soft magnetic materials as well as create separation between two magnetically bound permanent magnets.

Integrated circuits may be assembled by placing a batch of integrated circuit (IC) die on a leadframe. Each of the IC die includes a magnetically responsive structure that may be an inherent part of the IC die or may be explicitly added. The IC die are then agitated to cause the IC die to move around on the leadframe. The IC die are captured in specific locations on the leadframe by an array of magnetic domains that produce a magnetic response from the plurality of IC die. The magnetic domains may be formed on the lead frame, or may be provided by a magnetic chuck positioned adjacent the leadframe.

A carrier for use in a vacuum system is described. The carrier includes: a magnet arrangement including one or more first permanent magnets; one or more second permanent magnets; and a magnet device configured to change a magnetization of the one or more first permanent magnets. The carrier may be used for carrying a mask device or a substrate in the vacuum system. Further, a vacuum system and a method of operating a vacuum system are described.

A mover according to the present disclosure includes: a body to move; a second member; a suction unit; a location detection unit; a first moving part, and a second moving part. The second member moves in a state where the second member is combined with a first member provided for an object, as the body is displaced relative to the object. The suction unit is sucked to the object in the state where the second member is combined with the first member. The location detection unit detects a location of the body with respect to the object by detecting movement of the second member. The first moving part moves the body until the state where the second member is combined with the first member is established. The second moving part displaces the body relative to the object in the state where the second member is combined with the first member.

A method for using a lifting magnet and a lifting magnet. The lifting magnet includes a plurality of electromagnet coils that are each independently ON/OFF-controllable and voltage-controllable, and a magnetic pole that is excited by application of a voltage to the electromagnet coils. An electromagnet coil to be used for lifting steel plates is determined based on a total thickness of the steel plates to be lifted. An amount of passing magnetic flux ?.sub.r in the magnetic pole in a case where magnetic flux passes through only the steel plates to be lifted when the electromagnet coil is used is calculated. An application voltage to be applied to the electromagnet coil used for lifting the steel plates is determined based on the amount of passing magnetic flux ?.sub.r. The application voltage is applied to the electromagnet coil.