Class / Patent application number | Description | Number of patent applications / Date published |
335289000 | Electromagnet type (e.g., electromagnetic chuck) | 27 |
20090021334 | ELECTROMAGNETIC ACTUATOR - An electromagnetic actuator comprising a fixed magnetic pole ( | 01-22-2009 |
20090184789 | MAGNETIC CHUCK - 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 ( | 07-23-2009 |
20100231337 | ELECTRONIC DEVICE - An electronic device having two cases and a display module disposed therebetween is disclosed. Magnets are disposed at the two cases and the display module. When an acceleration sensed by a sensing unit of the electronic device is larger than a threshold value. The display module may be suspended via the magnetic repellent between the magnets disposed at the display module and the magnets disposed at two cases. | 09-16-2010 |
20110043310 | MONOLITHIC MAGNETIC APPARATUS AND PROCESS FOR MAKING SAID MONOLITHIC MAGNETIC APPARATUS - The present invention concerns a magnetic apparatus for magnetic clamping of ferrous elements (P | 02-24-2011 |
20110057755 | MAGNETIC ACTUATOR - A magnetic actuator has a static part and a dynamic part concentrically arranged therein. The static part comprises two permanent magnets and the dynamic part comprises two further permanent magnets. The magnet is oppositely oriented to the further magnets. The magnets are tuned to each other in such a way that the gravity on the dynamic part is compensated by the magnetic force on the dynamic part. The static part further includes a coil with which an additional magnetic field can be generated by which the actuation force can be adapted. | 03-10-2011 |
20110304418 | MAGNETIC HOLDING DEVICE AND METHOD FOR HOLDING A SUBSTRATE - A magnetic holding device is adapted for holding a mask during processing of a substrate. The magnetic holding device includes a substrate carrier which is adapted for receiving the substrate to be processed. The substrate carrier includes a permanent magnet adapted for generating a first magnetic field for holding the mask. Furthermore, the substrate carrier includes a solenoid which is adapted for generating a second magnetic field adapted for at least partially compensating the first magnetic field. In case the first magnetic field is compensated, at least partially, by means of the second magnetic field, the mask is released from the substrate carrier. | 12-15-2011 |
20130207758 | SELECTABLE AND CONTROLLABLE DETENT USING SPATIALLY MODULATED MAGNETIC FIELDS - A detent device or mechanism may include a strut comprising at least one strut magnetic array, at least one detent magnetic array, and other components and systems. The at least one detent magnetic array and the at least one strut magnetic array may, for example, apply a magnetic detent force to the strut. | 08-15-2013 |
20140232499 | MODULAR MAGNETIC DEVICE FOR CLAMPING FERROMAGNETIC WORKPIECES - The present invention refers to a magnetic device for clamping ferromagnetic workpieces comprising a frame having a first magnetic circuit configured to generate a first magnetic field adapted to clamp a ferromagnetic workpiece to be processed; a second magnetic circuit configured to generate a second magnetic field adapted to clamp said ferromagnetic workpiece to a machine tool bed; said first magnetic circuit and said second magnetic circuit being adapted to be controlled to turn on and/or off independently one from the other. The modular magnetic device is characterized in that it comprises first and second mechanical and electrical connection means for mechanically and electrically connecting said magnetic device, when in operation, to corresponding second and first complementary mechanical and electrical connection means of other modular magnetic devices located adjacent thereto, to create a series of modular magnetic devices mechanically and electrically connected together. | 08-21-2014 |
20160099097 | ENGAGING MODULE - An engaging module is suitable for first and second objects adapted to be combined or separated along a first axial direction. The engaging module includes an engaging component, an elastic component and an electromagnet. The engaging component is movably disposed on the first object. When the first object and the second object are combined, the engaging component is adapted to move to a first position along a plane to be engaged with the second object, and is adapted to move to a second position along the plane to separate from the second object. The first axial direction is not parallel to the plane. The engaging component is positioned at the first position through an elastic force of the elastic component, and is adapted to resist the elastic force of the elastic component to be positioned at the second position through a magnetic force generated by the electromagnet. | 04-07-2016 |
335290000 | With circuit control means | 10 |
20090251252 | Electromagnetic work holding system - The present disclosure is directed to a work holding system. The work holding system may include a plurality of electromagnets connected to a support structure and configured to fix a magnetic workpiece to the support structure. Further the work holding system may include a controller configured to selectively adjust an activation state of one or more electromagnets based upon a proximity of work being done on the magnetic workpiece. | 10-08-2009 |
20090256665 | VIBRATION-PROOF HOLDER APPLICABLE TO COMMUNICATION/NAVIGATION DEVICES FOR VEHICLE USE - A vibration-proof holder applicable to a communications/navigation device for vehicle use is provided, characterized by the use of a gap-detecting unit to detect position variations of the communications/navigation device, and an electromagnetic control unit to adjust magnetic intensity of magnetic bodies fixedly installed in the vehicle, wherein first and second magnetic bodies are limited to remain in the same track and to face one another with the same magnetic polar end thereof, such that the communications/navigation device can return to its initial position to achieve the vibration-proof effect. | 10-15-2009 |
20100289606 | ELECTROMAGNETIC ATTACHMENT APPARATUS - 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. | 11-18-2010 |
20110037547 | SELF-ANCHORING MAGNETIC APPARATUS AND CONTROL UNIT FOR CONTROLLING SAID MAGNETIC APPARATUS - The present invention concerns a magnetic apparatus ( | 02-17-2011 |
20130135067 | MAGNET SUBSTANCE HOLDER INCLUDING A COMBINATION OF A PERMANENT MAGNET AND AN ELECTROMAGNET - The present invention relates to a magnetic substance holder, which includes a permanent magnet, a pole piece coupling one of N and S poles of the permanent magnet and having a holding surface, a magnetizable material having an end surface contacting the pole piece, a coil surrounding the magnetizable material, and a control device controlling electric current flowing through the coil to control the magnetization of the magnetizable material. According to the present invention, optimal holding force can be realized for the same area, and the magnetic substance holder can be readily expanded to a module or be miniaturized according to the size of the interior of a device on which the magnet holder is installed, and can be widely applied to various equipment used in the industrial field such as lifts, chucks, locking devices, applied machines, and robots. | 05-30-2013 |
20140049347 | VARIABLE FIELD MAGNETIC HOLDING SYSTEM - A magnetic holding device uses an array of switchable magnets. A carrier holds the array of switchable magnets to form a working surface. Each switchable magnet has a coil of wire surrounding a magnetizable core element. The array is arranged in groups of magnets. A circuit is coupled to the coils to selectively magnetize and demagnetize each group of switchable magnets to selectively independently place each group into one of these states: an ON state that configures the selected group to have a first magnetic polarity at the working surface, an ON state that configures the selected group to have an opposite magnetic polarity at the working surface, and an OFF state that configures the magnets in the selected group to have no magnetism at the working surface. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. | 02-20-2014 |
20150028974 | SUPPORTING ASSEMBLY - A supporting assembly includes a base, a rotatable member, an electromagnet, and a switch. The base includes a main body and a first connection member. The first connection member is made of magnetic material. The first connection member protrudes from the main body and defines a first hole. The rotatable member includes a supporting member and a first shaft. | 01-29-2015 |
20150035632 | Clamp Assembly including Permanent Magnets and Coils for Selectively Magnetizing and Demagnetizing the Magnets - A clamp assembly comprises a first clamp including a plurality of magnet devices. Each magnet device includes a permanent magnet and a coil surrounding the permanent magnet. The clamp assembly further comprises a controller for pulsing the coils to selectively magnetize and demagnetize the permanent magnets. | 02-05-2015 |
20160005519 | MAGNETIC SUBSTANCE HOLDING DEVICE - A magnetic substance holding device includes: a first pole piece assembly including a first N-pole piece, a first S-pole piece, and a first permanent magnet; a second pole piece assembly including a second N-pole piece, a second S-pole piece, and a second permanent magnet; at least one first coil; at least one second coil; and a control device controlling current applied to the first coil and the second coil so as to control magnetic fluxes passing through the first coil and the second coil, thereby allowing the first pole piece assembly and the second pole piece assembly to switch between the first arrangement and the second arrangement, to control magnetic fluxes passing through the holding faces of the first pole piece assembly and the second pole piece assembly. | 01-07-2016 |
20160375534 | SUPPORTING UNIT AND SUBSTRATE-TREATING APPARATUS INCLUDING THE SAME - A supporting unit is provided. The supporting unit includes a body, an alignment member, at least one sensor, and a controller. The body has a top surface supporting a target object. The alignment member is disposed in the body and adjusts a position of the target object. The sensor senses the position of the target object. The controller controls the alignment member and the sensor member. The alignment member includes a magnet that adjusts the position of the target object according to an electromagnetic force; and a coil that applies the electromagnetic force to the magnet. | 12-29-2016 |
335291000 | Lifting or attracting type (e.g., for lifting pigiron or pulling hairpins) | 8 |
20080252405 | Magnet Arrangement for a Magnetic Levitation Vehicle - A magnet arrangement for a magnetic levitation vehicle is described. The magnet arrangement comprises a plurality of magnet poles ( | 10-16-2008 |
20090160590 | METHOD AND APPARATUS FOR CONTROLLING A LIFTING MAGNET SUPPLIED WITH AN AC SOURCE - A magnet controller supplied by an AC source controls a lifting magnet. Two bridges allow DC current to flow in both directions in the lifting magnet. During “Lift”, relatively high voltage is applied to the lifting magnet until it reaches its cold current. Then voltage is lowered. After a desired interval, once the magnet has had time to build its electromagnetic field, voltage is further reduced to prevent the magnet from overheating. The magnet lifting forced is maintained due to the magnetic circuit hysteresis. During “Drop”, reverse voltage is applied briefly to demagnetize the lifting magnet. At the end of the “Lift” and the “Drop”, most of the lifting magnet energy is returned to the line source. A logic controller controls current and voltage of the magnet and calculates the magnet's temperature. In one embodiment, a “Sweep” switch is provided to allow reduction of the magnet power to prevent attraction to the bottom or walls of magnetic rail cars or containers. | 06-25-2009 |
20100052832 | PERMANENT ELECTROMAGNETIC INDEXING APPARATUS - A permanent electromagnetic indexing apparatus includes a chassis, a carrier pivoted to the chassis, and a plurality of magnetic sets. Each of the magnetic sets includes a first permanent magnet, a magnetic-conductive member, a second permanent magnet, and a magnetizing coil. Each of the first permanent magnets is mounted to the magnetic-conductive member. Each of the magnetic-conductive members is mounted onto the second permanent magnet. Each of the magnetizing coils surrounds the second permanent magnet. The magnetic sets are mounted to the carrier to enable the magnetic-conductive members to become a working surface for placing a workpiece thereon. When each of the magnetizing coils is electrically conducted, the polarity of each of the magnetic-conductive members can be changed and then the workpiece can be fixed to or removed from the working surface. In this way, the workability can be enhanced to enable preferably flexible and variable processing. | 03-04-2010 |
20100201468 | LIFTING AND TRANSPORTING STACKS OF FERROMAGNETIC PLATES - A stack of ferromagnetic sheets is gripped, lifted, and transported by first engaging with an uppermost sheet of the stack a plurality of magnet assemblies of a magnetic grab, each assembly having at least one electromagnet, then electrically energizing the electromagnets and lifting the stack with the grab while monitoring a magnetic flux of each electromagnet. A controller then compares the fluxes of the electromagnets, and varies the electrical energization of at least one of the electromagnets such that the fluxes of all the electromagnets are generally equal. The system has at least one flux sensor on each of the magnet assemblies and connected to the controller. | 08-12-2010 |
20110234343 | Cylindrical Magnetic Levitation Stage - The present invention provides a cylindrical magnetic levitation stage which includes a cylindrical substrate used to form micro-patterns of various arbitrary shapes on a large-area semiconductor substrate or display panel substrate, a cylindrical substrate, a combination of a first permanent magnet array and a first coil array and a combination of a first permanent magnet array and a first coil array, which are coupled to the cylindrical substrate, so that levitation, axial translation and rotation of the cylindrical substrate can be made finely through the control of a magnetic force generated by the interaction between a magnetic field generated by electric current applied to the coil arrays and a magnetic field generated from the permanent magnet arrays corresponding to the coil arrays. | 09-29-2011 |
20140210578 | SOLID ELASTIC SPHERE LEVITATION DEVICE - This device temporarily suspends a solid elastic sphere over a specific location. The sphere is composed of evenly dispersed high performance anisotropic powder bonded to an elastic polymer. Levitation of the sphere occurs with an optimized levitation by means of permanent magnets. The equilibrium is stable along one or two axis by means of these permanent magnets, and along one or two others by means of a combination of electromagnets of near zero consumption at equilibrium. | 07-31-2014 |
335294000 | With outer casing or housing | 2 |
20100013583 | MAGNETIC FIXING DEVICE - 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. | 01-21-2010 |
20150102879 | WIRELESS ELECTRONIC DEVICE AND METHOD OF USE - 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. | 04-16-2015 |