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8976501 Magnetically movable objects over a display of an electronic device  
In one implementation, the present disclosure provides a method for imparting motion to a magnetically movable object. The method includes disposing the magnetically movable object over a display...
8944999 Coil system for the contactless magnetic navigation of a magnetic body in a work space  
A coil system for the contactless magnetic navigation of a magnetic body in a work space, has a plurality of coils and a current controller for controlling the respective currents in the plurality...
8912872 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...
8879231 Method and arrangement for the sensorless operation of magnetic bearings  
A sensor system for a magnetic bearing, which has two actuator coils, two clocked power output stages, a current sensor for detecting those currents in the actuator coils which are encumbered with...
8804294 Active material actuation utilizing tunable magnetic overload protection  
A system for and method of providing overload protection for an active material actuator and composing assembly, including a magnetically functioning mechanism comprising one or more permanent...
8797703 Active material actuator having a magnetorheological overload protector  
A system for and method of providing overload protection for actuators, such as shape memory alloy wires, including and utilizing a magnetorheological fluid mechanism connected in series with or...
8773835 Active material actuation utilizing magnetic overload protection  
A system for and method of providing overload protection for an active material actuator, includes a magnetically functioning mechanism comprising, for example, one or more permanent or...
8705229 Foldable electronic devices including a first and a second magnet  
Foldable electronic devices including a first and a second magnet. An example foldable electronic device includes a base, a cover, a hinge pivotally connecting the base and the cover to fold the...
8616033 Method and system for vibration damping and shape control of a suspended metal strip  
A method for vibration damping and shape control of a suspended metal strip is provided. The method includes the steps of: measuring distance to the metal strip by a plurality of non-contact...
8531813 Method and system for moving material  
A method and system for moving magnetic material includes an electromagnet wherein known problems associated with DC power circuit interruptions are substantially reduced. The system includes a...
8491025 Magnet controller for controlling a lifting magnet  
A method for operating an electric crane, comprises the steps of activating a magnet controller to cause a current to flow through a magnet for creating a magnetic field about the magnet for...
8441770 Voltage spikes control for power converters  
A novel inductive overvoltage suppression circuit for power converters is presented. High amplitude voltage spikes are generally occurring in high frequency power converters in presence of small...
8427806 Control system and method for transmission solenoids  
A current control output (CCO) system for transmission solenoids includes a current determination module, a current compensation module, and a current control module. The current determination...
8351178 Electronic system with secured data accessing  
A first electronic device includes an electromagnetic component embedded in its connecting port and controlled to be activated during data transmission between the first electronic device and a...
8351177 Method and apparatus for discharging a lifting magnet  
A method for discharging an industrial lifting magnet quickly without producing a high voltage transient is presented. Most of the stored magnetic energy is dissipated in the magnet itself by...
8342293 Magnetic guiding apparatus of elevator  
A guide apparatus includes a pair of guide rails, magnet units, pedestals, a sensor unit, a magnetic guide control apparatus as a control unit, and projected parts. The magnet unit includes...
8331075 Electro-static floating type gyro device  
The present invention provides an electro-static floating type gyro device comprising: a gyro mechanism having a gyro rotor and plural adjacent pairs of electro static support electrodes for...
8311785 Methods and apparatus to minimize saturation in a ground fault detection device  
Methods and apparatus to minimize saturation in a ground fault detection device are disclosed. An example method includes connecting a capacitor simulator to a node of the ground fault detector...
8294542 Magnetic suspension device  
A magnetic suspension device comprises a magnetic base and a suspension body. The suspension body is suspended above the magnetic base. The suspension body is provided with a receiving coil and at...
8258663 Magnetic levitation novelty device  
An apparatus for animating a magnetically levitated object. The apparatus includes a display with an overhead housing. A magnetic levitation and oscillation assembly is included with an...
8213149 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...
8068325 Method and apparatus for moving material  
A method and apparatus for moving magnetic material includes an electromagnet for lifting the magnetic material where upon its release, the residual magnetic flux of the lifted magnetic material...
8059381 Method and apparatus for controlling a lifting magnet of a materials handling machine  
A magnet controller supplied by a DC generator controls a lifting magnet. Four transistors, forming an H bridge, allow DC current to flow in both directions in the lifting magnet. During “Lift”,...
8031038 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...
8018106 Magnetic bearing device with simplified wiring  
A magnetic bearing device and a method of operation for such a device are provided. The device comprises a group (410) of electromagnetic actuators (411, 412, 413, 414). Each actuator is...
8004814 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...
8000078 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...
7992850 System and method for controlling electromagnet lift power for material handlers  
A method for operating an electromagnetic lift that includes a generator-driven electromagnet comprises adjusting a position of the electromagnet, in response to a first position command. Upon...
7929268 Magnetic levitation apparatus  
An exciting voltage arithmetic portion calculates an exciting voltage of an electromagnet using a signal of a gap sensor. On the other hand, a sensorless exciting voltage arithmetic portion...
7928620 Device for safeguarding an uninterruptible power supply of a magnet bearing in the event of failure of an electrical supply voltage  
The invention relates to a device for safeguarding uninterrupted power supply of a magnetic bearing (5) in the event of a power supply voltage (U) failure. Said device comprises: a first frequency...
7864829 Dropping model electrostatic levitation furnace  
A dropping model electrostatic levitation furnace which puts a charged sample in levitation state by an electric field generated between electrodes and subjects the sample to heat treatment, in...
7859157 Magnetic levitation system  
A magnetic levitation system for supporting an object against gravity by a supporting force includes a permanent-magnet dipole aligned in a vertical position and coupled to the object, a...
7847453 Bearingless step motor  
There is provided a bearingless step motor in which a rotating shaft can rotate while rising from a main body by a magnetic force without using a mechanical bearing. The bearingless step motor...
7843098 Method for operating an electromotive drive  
A method for operating an electromotive drive of a textile machine, comprising a contactlessly mounted rotor and catch bearings. The rotor rests on one catch bearing prior to initial operation,...
7791856 Method and apparatus for moving material  
A method and apparatus for moving magnetic material includes an electromagnet for lifting the magnetic material where upon its release, the residual magnetic flux of the lifted magnetic material...
7786636 Magnetic bearing device and a turbo molecular pump with the magnetic bearing device mounted thereto  
A magnetic bearing device has a rotor, electromagnets that control axial/radial positions of the rotor, and a power source that supplies power to the electromagnets. A switching circuit switches a...
7782590 Medical fluid machine having solenoid control system with reduced hold current  
An electromechanical solenoid control system with reduced hold current includes an electromechanical solenoid including an armature and a coil; a voltage source; a resistor placed in an electrical...
7742272 Handling machine using lifting magnet  
It is realized to efficiently energize a lifting magnet device, and reduce the devices used in an energization system of the lifting magnet device in size, energy consumption, and noise as well....
7697253 Method and apparatus for controlling a lifting magnet of a materials handling machine  
A magnet controller supplied by a DC generator controls a lifting magnet. Four transistors, forming an H bridge, allow DC current to flow in both directions in the lifting magnet. During “Lift”,...
7679248 Magnetic bearing system  
Disclosed is a magnetic bearing system capable of simplifying a demodulation operation and reducing a processing load associated with a magnetic levitation control. A carrier signal having a...
7635937 Device for magnetically suspending a rotor  
The device for magnetically suspending a rotor relative to a structure comprises at least one axial active magnetic bearing with a main electromagnet coil disposed in a stator and having...
7576463 Magnetic bearing device and magnetic bearing spindle device  
A control device includes a differential amplifying circuit for obtaining a difference between values of exciting currents (exciting voltage values) supplied to a pair of axial electromagnets and...
7525643 Lithographic apparatus, and mechanism  
A lithographic apparatus has a mechanism with a movable element, at least partially made from a magnetizable material. The movable element is movable between a first position and a second...
7505243 Magnetic levitation apparatus  
A magnetic levitation apparatus supports a magnetic element in a magnetic field. A control system controls a variable magnetic field to maintain the magnetic element at an equilibrium location...
7495879 Solid-state magnet control  
A solid-state magnet control includes a housing and magnet control circuitry mounted within the housing. The magnet control circuitry includes an insulated gate bipolar transistor (IGBT) bridge...
7456859 Image pickup device  
The present invention is an image pickup device provided with a CMOS camera which is provided with a telecentric lens to photograph a sample put in a levitation state at the center inside an...
7447250 Electrostatic suspension furnace and method for fusing samples using this  
An electrostatic levitation furnace wherein main electrodes opposed to each other within a vacuum chamber are arranged at intervals to form interspaces between them. Auxiliary electrodes are...
7415971 Control circuit for an actuator  
In a control circuit for at least one actuator, in particular for a capacitive actuator of an injection system of an internal combustion engine, a control current can be applied to the actuator....
7304852 Inverter apparatus  
An inverter assembly including a storage compartment for multiple cables adapted to be releasably connected to the inverter. A body of the inverter assembly includes interior and exterior fins for...
7262950 Relay device having holding current stabilizing and limiting circuit  
A relay device includes plural relay units, each having a coil for opening/closing a contact point, a base plate made of resin and having wiring metal pieces, and a control circuit mounted on the...

Matches 1 - 50 out of 156 1 2 3 4 >