| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 361160000 |
For relays or solenoids
| 215 |
| 361143000 |
Systems for magnetizing, demagnetizing, or controlling the magnetic field
| 102 |
| 361142000 |
Including housing
| 6 |
| 361141000 |
Including superconductivity | 5 |
| 20090168286 | SYSTEMS, METHODS, AND APPARATUS FOR SUPERCONDUCTING MAGNETIC SHIELDING - A localized area is at least partially contained within a perimeter of a shield ring formed by a closed superconducting current path of a material that is superconductive below a critical temperature. The shield ring is at least partially within a perimeter of a compensation coil that is coupled to a current source. One or more measurement devices are responsive to magnetic fields in the vicinity of the localized area, allowing compensation by controlling current to the compensation coil. A heater can raise temperature of the shield ring out of a superconducting condition. | 07-02-2009 |
| 20100284120 | SYSTEM AND METHOD FOR SUPERCONDUCTING MAGNET RAMP-DOWN - A system for ramping-down a superconducting magnet includes an electrically conductive lead connectable to a superconducting magnet and a plurality of diode assemblies arranged in series and coupled to the electrically conductive lead. Switches are arranged in parallel with the plurality of diode assemblies, with each switch having a first position and a second position and wherein each switch, when in the first position, forms an electrical short between first and second nodes of a corresponding diode assembly. A controller receives a magnet parameter value indicative of a present state of the superconducting magnet, determines a number of diode assemblies through which current from the electrically conductive lead is desired to pass based on the magnet parameter value, and selectively actuates the switches coupled to the determined number of diode assemblies to the second position to pass current from the superconducting magnet through the determined number of diode assemblies. | 11-11-2010 |
| 20110007445 | PORTABLE MAGNET POWER SUPPLY FOR A SUPERCONDUCTING MAGNET AND A METHOD FOR REMOVING ENERGY FROM A SUPERCONDUCTING MAGNET USING A PORTABLE MAGNET POWER SUPPLY - A portable magnet power supply for a superconducting magnet includes apparatus for the storage of energy released from a superconducting magnet, the apparatus having an electrical run-down load for connection across the electrical terminals of a superconducting magnet; and a heat storage material in thermal contact with the run-down load; and a method for use thereof. | 01-13-2011 |
| 20120014030 | SUPERCONDUCTING COIL, SUPERCONDUCTING MAGNET, AND METHOD OF OPERATING SUPERCONDUCTING MAGNET - In a superconducting coil, a parallel conductor includes a plurality of superconducting wires bundled and wound in a coil. The superconducting wires have at least two connections therebetween. A current source connected to the superconducting wires to form a loop via the superconducting wires and the connection to supply a current in the loop when a quench is detected. A superconducting magnet includes the superconducting coil, a persistent current switch connected to the superconducting coil, and a quench detector configured to detect quench occurring in the superconducting coil. | 01-19-2012 |
| 20130083443 | MAGNETIC SHIELD - A magnetic shielding arrangement, including: at least one magnetic flux source; a superconductor magnetic shield at least partially surrounding the magnetic flux source; a second shield at least partially surrounding the superconductor magnetic shield. | 04-04-2013 |
| 361140000 |
Including compensation for thermal change of electromagnetic device | 5 |
| 20090128979 | SYSTEM AND METHOD FOR PROTECTING A COIL STRUCTURE IN A CONTROLLED SWITCH - A system and method for protecting a coil structure in a controlled switch. In one embodiment, the invention relates to a circuit including at least one load switch connectable between a power source and a load and at least one auxiliary switch, each switch actuable between a default position and a switched position, a coil structure configured to actuate the at least one load switch and at least one auxiliary switch in response to a control input, the coil structure switchable between an actuating configuration for actuating the at least one load switch and the at least one auxiliary switch from the default position, and a holding configuration for holding the at least one load switch and the at least one auxiliary switch in the switched position, and a resettable current limiting device configured to limit the current flow in the actuating configuration of the coil structure if the current flow exceeds a threshold for a predetermined period of time, wherein the at least one auxiliary switch is configured to switch the coil structure from the actuating configuration to the holding configuration. | 05-21-2009 |
| 20090213519 | MEDICAL FLUID MACHINE HAVING SOLENOID CONTROL SYSTEM WITH TEMPERATURE COMPENSATION - A medical fluid machine having a solenoid control system with temperature compensation includes an electromechanical solenoid including an armature and a coil, a voltage source, a switching device configured to selectively apply power from the voltage source to the solenoid coil, and a control element connected electrically to the switching device and operable to receive at least one signal indicative of a resistance of the coil and using the signal to control the switching device to selectively apply power from the voltage source to the solenoid coil. | 08-27-2009 |
| 20090284889 | Relay controller for controlling an excitation current of a relay - The invention relates to a relay controller ( | 11-19-2009 |
| 20100177453 | SYSTEM FOR PRECISELY CONTROLLING THE OPERATIONAL CHARACTERISTICS OF A RELAY - A system for precisely controlling the operational characteristics of a relay is provided. In one embodiment, the invention relates to a relay having performance characteristics that vary with a temperature of the relay, where the relay comprises a plurality of operational phases including a switching phase, and a relay control circuit configured to provide a preselected current to the relay at least during the switching phase, where the preselected current remains substantially constant despite a change in the temperature of the relay, and where the relay is configured to transition from a non-energized position to an energized position during the switching phase. | 07-15-2010 |
| 20100284119 | Compensating Temperature Effects in Magnetic Actuators - Methods and apparatus for adjusting the amount of current provided to a magnetic actuator to compensate for a temperature change associated with the magnetic actuator are disclosed. According to one aspect of the present invention, an apparatus includes an actuator, which has at least one magnet and an associated force constant. The apparatus also includes a temperature sensing arrangement and a control arrangement, the temperature sensing arrangement being arranged to determine or measure a temperature of the magnet. The control arrangement adjusts the current provided to the actuator based on the temperature of the magnet. The current is adjusted to maintain a correct or desired force in light of temperature-induced variations to a force constant. | 11-11-2010 |
| 361159000 |
Including means for using, or compensating for, the induced EMF of the electromagnetic device | 5 |
| 20090201620 | ELECTROMAGNETIC FIELD ENERGY RECYCLING - An electromagnetic field energy recycling circuit recovers energy from collapsing magnetic fields, stores recovered energy as charge on a capacitance, and subsequently re-uses stored recovered energy to establish a magnetic field. Capacitance and inductance are sequentially connected in various configurations to recycle the energy by a discontinuous resonant energy transfer. In a magnetizing configuration, a magnetic field is established by transfer of energy from a capacitance to an inductance. In a recovery configuration, a capacitance is charged with energy recovered from the inductance on collapse of the magnetic field. In a third configuration, recovered energy stored by the capacitance is held until required for establishing a magnetic field. During magnetizing, the capacitance voltage drops by at least 50%: preferably to zero. During recovery, current flowing in the inductance falls to zero. The circuit drives electromagnetic devices, e.g., electric motors, generators, transformers, solenoids, induction heating coils and inductive power transfer windings. | 08-13-2009 |
| 20120327548 | MAGNETIZATION APPARATUS - A magnetization apparatus includes a power supply unit, an energy storage element and a voltage clamp unit. The power supply unit generates at least one exciting signal to excite at least a coil of a magnetic field generating apparatus. The voltage clamp unit has a clamping voltage. The voltage level of the clamp voltage is higher than the voltage level of the exciting signal, and lower than the rated voltage of the energy storage element. When the exciting signal turns to a low voltage level, the voltage clamp unit controls the voltage level of the energy storage element to be less than or equal to the voltage level of the clamp voltage. This configuration with the voltage clamp unit can extend the lifetime of the energy storage element and reduce the energy loss to enhance the efficiency. | 12-27-2012 |
| 20150085419 | MAGNETIC ELEMENT CONTROL DEVICE, MAGNETIC ELEMENT CONTROL METHOD AND MAGNETIC DETECTION DEVICE - A magnetic element control device of the present invention includes an excitation signal generation unit that generates an alternating signal, an excitation signal adjustment unit that generates an alternating voltage signal from the alternating signal, and generates an excitation signal which is applied to an exciting coil on the basis of the alternating voltage signal, a detection signal comparison unit that detects a detection signal of a positive voltage or a negative voltage which is generated by an induced electromotive force when a current direction of the excitation signal switches, and a feedback signal adjustment unit that generates a feedback signal for applying a magnetic field, cancelling a stationary magnetic field which is applied to a magnetic element from voltage information, to a feedback coil. | 03-26-2015 |
| 20160181009 | LOW CROSSTALK MAGNETIC DEVICES | 06-23-2016 |
| 20170236636 | LOW CROSSTALK MAGNETIC DEVICES | 08-17-2017 |
| 361157000 |
Including instrument (e.g., meter-relay) | 3 |
| 20130201592 | DEVICE AND METHOD FOR REDUCING A MAGNETIC UNIDIRECTIONAL FLUX FRACTION IN THE CORE OF A TRANSFORMER - A device for reducing a magnetic unidirectional flux fraction in the core of a transformer is provided. The device has a measuring device that provides a sensor signal corresponding to the magnetic unidirectional flux fraction, a compensation winding that is magnetically coupled to the core of the transformer, a switching unit arranged electrically in a current path in series with the compensation winding in order to feed a current into the compensation winding. The action of the current is directed opposite to the unidirectional flux fraction. The switching unit can be controlled by a regulating variable provided by a control device and can be switched into a conductive state during a predefined time interval and in accordance with the regulating variable, the switch-on time being mains-synchronous. A device for limiting the current in the current path is provided and the sensor signal is fed to the control device. | 08-08-2013 |
| 20140211361 | STEEL SHEET SHAPE CONTROL METHOD AND STEEL SHEET SHAPE CONTROL APPARATUS - A steel sheet shape control method includes, (A) setting a target correction shape of the steel sheet at a position of an electromagnet to a curved shape, (B) measuring a steel sheet shape when electromagnetic correction is performed, (C) calculating the steel sheet shape in a nozzle position based on the steel sheet shape, (D) repeating (B) and (C) by resetting the target correction shape to a curved shape having a smaller amount of warp, (E) when the amount of warp of the steel sheet shape at the position of the nozzle is less than the upper limit value, (F) calculating vibration of the steel sheet at the position of the nozzle, and (G) adjusting a control gain of the electromagnet until amplitude of vibration is less than a second upper limit value when the amplitude of the vibration is equal to or more than the second upper limit value. | 07-31-2014 |
| 20150348727 | HANDHELD DEACTIVATOR WITH INTEGRATED THERMAL SENSOR | 12-03-2015 |
| Entries |
| Document | Title | Date |
|---|
| 20080198528 | Microsystem - A microsystem consists of at least one sensor and/or actuator, a signal processor and/or control mechanism linked therewith, a timer, and an electrical energy storage unit providing a current source for at least the signal processor and/or control mechanisms. The signal processor and/or control mechanism has a mode switching mechanism, by means of which it can be set to an operating mode and a resting mode that consumes less current compared with the operating mode. The mode switching mechanism has at least one control signal input which is electrically connected to the timer for application of a mode switching signal. The timer is a mechanical timer, which has at least one micromechanical cantilever, which is coupled with at least one electrical element connected to the at least one control signal input of the signal processor and/or control mechanism in such a way that said electrical element is time-dependently set. | 08-21-2008 |
| 20080239611 | Apparatus and method for drive controlling micro machine device - In a method for drive controlling a micro machine device including two electrodes opposing each other and a dielectric layer sandwiched therebetween, a control voltage in a rectangular waveform in which positive and negative polarities are alternately inverted is applied between the two electrodes. A current passing through the micro machine device due to the application of the control voltage are detected with respect to positive and negative sides, and parameters related to a capacitance of the micro machine device are acquired with respect to the positive and negative sides on the basis of the detected current. The control voltage is controlled so that the parameters acquired with respect to the positive and negative sides accord with each other. Thus, variation of the capacitance between the positive side and the negative side can be suppressed in switching drive of a variable capacitance device. | 10-02-2008 |
| 20090040679 | Method and device for recognizing a load which is connected to a relay - Disclosed is a method for detecting a consumer ( | 02-12-2009 |
| 20090052106 | CONTROLLABLE DRIVE APPARATUS - A drive apparatus is controllable by a three-point actuating signal, with a drive for driving an actuator, the drive apparatus having a matching circuit for matching the three-point actuating signal to predeterminable parameters. | 02-26-2009 |
| 20100277848 | Apparatus and method for controlling excitation frequency of magnetostrictive ultrasonic device - Apparatus and method for controlling the frequency of the current in the excitation coil of a handpiece of a dental magnetostrictive ultrasonic scaling unit, or a similar transducer. A microprocessor continually samples predetermined functions of the current through the excitation coil, and periodically adjusts the frequency, by performing a coarse-stepped frequency scan, followed by a fine-stepped frequency scan until the function samples are close to predetermined optimum values. The functions can include the peak of the current and the peak of a high-pass filtered version of the current. The frequency adjustment is performed each time the handpiece is energized by the practitioner, and at frequent intervals thereafter, assuring automatic optimal frequency at all times and under all conditions. Apparatus according to the invention does not require sensing coils or complex power- or impedance-sensing circuitry and covers a wide range of resonant frequencies for different handpiece- and insert types. A configuration with multiple handpieces is supported. | 11-04-2010 |
| 20110019327 | COMPACT SWITCHGEAR FOR AN ELECTRICAL CONSUMER - A switchgear includes a power supply built into a common housing, and at least two drives. The power supply can be fed by an external supply voltage and an external consumer can be connected to the two drives. In at least one embodiment, the switchgear includes, in the same housing, a built-in overload detection for the two drives and/or a built-in circuit breaker function for the two drives, and/or a built-in control circuit for the common control of the two drives. The switchgear can optionally be completed by a transformer providing an additional function of the targeted charging of a buffer capacitor and/or by an energy accumulator providing an additional function of the targeted discharge thereof by temporarily switching on a connected consumer. | 01-27-2011 |
| 20110170224 | Determining a Change in the Activation State of an Electromagnetic Actuator - A method determines a change in the activation state of an electromagnetic actuator. | 07-14-2011 |
| 20110273811 | STARTER FOR THERMAL ENGINE EQUIPPED WITH AN ELECTRONIC CONTROL DEVICE - A starter including a double contact electromagnetic contactor ( | 11-10-2011 |
| 20130003244 | Integrated Circuit Package with Transformer - Aspects of a method and system for a transformer in an integrated circuit package are provided. In this regard, signals may be transmitted and/or received via an antenna communicatively coupled to a transformer embedded in multi-layer integrated circuit package. The windings ratio of the transformer may be configured based on an impedance of the antenna, an impedance of a transmitter coupled to the transformer, an impedance of an LNA coupled to the transformer, and/or a power level of the received and/or transmitted signals. The windings ratio may be configured via one or more switching elements which may be MEMS switches embedded in the multi-layer IC package. The transformer may comprise a plurality of loops fabricated on a corresponding plurality of metal layers in the multi-layer IC package, and the loops may be communicatively coupled with one or more vias. The multi-layer IC package may comprise ferromagnetic and/or ferromagnetic materials. | 01-03-2013 |
| 20130201589 | METHOD FOR OPERATION OF MULTI-LAYER-MULTI-TURN HIGH EFFICIENCY TUNABLE INDUCTORS - A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater. | 08-08-2013 |
| 20130208389 | METHOD FOR OPERATION OF MULTI-LAYER-MULTI-TURN HIGH EFFICIENCY INDUCTORS WITH CAVITY STRUCTURE - A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater. | 08-15-2013 |
| 20130208390 | SYSTEMS USING MULTI-LAYER-MULTI-TURN HIGH EFFICIENCY INDUCTORS - A multi-layer, multi-turn structure for an inductor having a plurality of conductor layers separated by layers of insulator is described. The inductor further comprises a connector electrically connected between the conductor layers. The structure of the inductor may comprise a cavity therewithin. The structure of the inductor constructed such that electrical resistance is reduced therewithin, thus increasing the efficiency of the inductor. The inductor is particularly useful at operating within the radio frequency range and greater. | 08-15-2013 |
| 20130242451 | 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 electromagnets, and/or magnetorheological fluid, and configured to produce a holding force less than the capacity of the actuator, and more preferably, a modifiable holding force responsive to load influencing conditions. | 09-19-2013 |
| 20150357106 | Apparatus with a circuit for actuating a magnetic actuator arrangement - An apparatus with a circuit arrangement having four actuatable switching elements and three output connections for actuating two magnetic actuator coils. A first switching element is connected between a first supply voltage connection for a high potential of a supply voltage source and a first output connection. A second switching element is connected between the first supply voltage connection and a second output connection. A third switching element is connected between a third output connection and a second supply voltage connection for low potential of the supply voltage source. A fourth switching element is connected between the second output connection and the second supply voltage connection. A magnetic actuator arrangement is electrically connected to the circuit arrangement via lines and includes two magnetic actuator coils and three actuator connections. | 12-10-2015 |
| 20150380144 | ELECTROMAGNETIC COIL SYSTEM AND METHODS - Methods and systems are provided for operating an electromagnetic coil assembly. As one example, a method comprises responsive to energization of an electromagnetic coil of an electromagnetic coil assembly, translating the electromagnetic coil along a central axis of the electromagnetic coil assembly toward a magnetic armature while maintaining the armature fixed along the central axis. The electromagnetic coil assembly may be utilized within various clutching, braking, or lever applications. | 12-31-2015 |
