200results about "Electromagnets without armatures" patented technology

The invention discloses a hydraulic mechanism for a water-cooled magnet structure with high mechanical stability. The hydraulic mechanism comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a limiting block, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The water-cooled magnet has the advantages that axial stress application can be carried out on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved, and the high mechanical stability of the water-cooled magnet is improved.

A liquid cooling system includes first and second coolant tubes and a coupler to couple the first coolant tube to the second coolant tube. The first coolant tube receives coolant liquid from a first element of the liquid cooling system. The second coolant tube provides the coolant liquid to a second element of the liquid cooling system. The coupler is configured to receive an electrical signal to constrict a flow of the coolant liquid.

The utility model discloses an electromagnetic coil, a magneto-rheological shock absorber and an automobile. The electromagnetic coil comprises an iron core and an excitation wire. The iron core is sleeved outside the sliding end, and a wire slot is annularly formed in the peripheral side of the iron core; the excitation wire is wound in the wire slot to form an excitation coil, and the cross section of the excitation wire is in a flat geometric shape; the magnetorheological damper comprises the electromagnetic coil and is applied to an automobile. In the scheme of the utility model, after the excitation lead is wound into the excitation coil, the gap between each turn of lead and the gap between the external lead of the excitation coil and the slot wall of the wire slot are greatly reduced, under the condition that the space of the wire slot is not changed, the number of turns of the coil can be increased by using the flat excitation lead, and the utilization rate of the space in the wire slot is higher; the effective working length of the electromagnetic coil is larger, the maximum damping force of the magneto-rheological shock absorber can be improved, the electromagnetic efficiency is greatly improved, and large damping force can be generated only through small current.

A vehicle for driving on ferromagnetic structures includes a chassis, first and second wheels rotatably coupled to the chassis, and a magnet array coupled to the chassis for magnetically attracting the vehicle to the structures. The magnet array is controllable to aim a magnetic field produced by the magnet array over a range of angles relative to the chassis.

The invention discloses a pulsed high-intensity magnetic field generation device and method. The device comprises a vacuum chamber; the spiral backflow assembly is located in the vacuum cavity and comprises a conductive bottom plate, a conductive top plate located over the conductive bottom plate and a plurality of conductive spiral rods, a first through hole is formed in the conductive bottom plate, one end of each conductive spiral rod is connected to the conductive bottom plate, and the other end of each conductive spiral rod is connected to the conductive top plate; the plurality of conductive screw rods are uniformly distributed in the circumferential direction around the axis of the first through hole and have the same spiral direction; the plasma generating assembly comprises a first conductive block penetrating through the first through hole and not making contact with the bottom plate, a second conductive block located over the first conductive block and connected with the conductive top plate and a plurality of micron-sized conductive wires, one ends of the micron-sized conductive wires are connected to the first conductive block, and the other ends of the micron-sized conductive wires are connected to the second conductive block; the plurality of micron-sized conductive wires are uniformly distributed in the circumferential direction around the axis of the first through hole; the positive electrode of the pulse current source is electrically connected to the conductive bottom plate, and the negative electrode is electrically connected to the first conductive block. The invention aims to generate pulsed magnetic field intensity by using a simple device structure.

An interference reduction device is provided. The interference reduction device may include a magnetic shield positioned in proximity of a magnetic field. The magnetic shield is configured to reduce interference on the magnetic field along the direction of the magnetic field. The magnetic shield may include a cutout approximately parallel to the direction of the magnetic field, the cutout is configured to reduce a distortion caused by the magnetic shield on the magnetic field.

The present invention relates to an optimized structure and a control system of a magnetic lifter. The control system of a magnetic lifter according to an embodiment of the present invention may comprise: a magnetic lifter unit comprising a plurality of ports in the form of an accommodation groove and comprising auxiliary magnetic poles which are accommodated and fixed in the plurality of ports, respectively, operate as a magnetic lifter having N and S poles when external power is applied, to generate an attractive force with respect to an object to be attracted, and prevent magnetic force loss caused by an air gap with a contact surface of the object to be attracted; and a magnetic force control device configured to convert a DC voltage applied to a solenoid coil into an AC voltage and apply the converted voltage, in order to remove residual magnetism of the object to be attracted after the object to be attracted is lowered to a destination.

To provide a magnetic component and a method of manufacturing the same.SOLUTION: A magnetic component includes a magnetic device, a base, and a positioning frame. The magnetic device includes a top part and a bottom part which are disposed oppositely, and the magnetic device includes a magnetic core and a coil which is provided while being wound around the magnetic core. The base includes a base plate. The positioning frame has a positioning part and a peripheral wall, the peripheral wall includes a first end and a second end which are provided oppositely, the first end and the second end respectively correspond to the top part and the bottom part of the magnetic device, and the peripheral wall is vertically connected to an outer edge of the positioning part in a circumferential direction by the first end. The second end of the peripheral wall of the positioning frame is connected to an outer edge of the base plate in the circumferential direction. Thus, the positioning frame encloses a storage space together with the base plate, the magnetic device is positioned in the storage space, and the top part of the magnetic device is brought into contact and engaged with the positioning part of the positioning frame.SELECTED DRAWING: Figure 2D

The present invention relates to a pseudo-magnetic monopole generator comprising a plurality of magnetic elements arranged to form a closed loop structure. Each of the magnetic elements is magnetized along the longitudinal direction thereof, and the magnetic elements are specifically arranged such that the magnetic moments thereof are aligned in a vortex-like direction. In the closed loop structure, a first pole of each magnetic element is exposed at an edge, while a second pole is shielded by an adjacent magnetic element, and the second pole is configured to face a central opening of the closed loop such that a polarized magnetic field having the same polarity as the second pole is emitted in both directions perpendicular to the plane of the closed loop structure through the central opening.

The present application provides an operating mechanism and an operating input device. The operating mechanism comprises: a housing, the housing having an accommodating space; a movable operating member, the movable operating member being accommodated in the accommodating space and at least partially extending out of the housing; a support member, used for supporting the movable operating member, wherein the movable operating member moves around the support member; magnets, the magnets being connected to the movable operating member; and magnetic members, wherein the magnetic members have magnetic attraction to the magnets, and the movable operating member can be reset and / or retained in an initial position by means of the magnetic attraction between the magnetic members and the magnets. According to the operating mechanism and the operating input device provided in the embodiments of the present application, the operating mechanism has vibration resistance and drop impact resistance, the reliability of the operating mechanism is not easily affected by assembly, and the operating mechanism has high durability against user inputs.

Techniques for latching a shaft assembly with an integrated system are discussed herein. The integrated system including a nuclear reactor configured to raise a stem of the shaft assembly into a hold out. The hold out can include a sleeve, and metallic balls, the metallic balls being positioned in openings of the sleeve. The hold out can include a housing positioned around the sleeve and the metallic balls. The housing can include a gap that is narrower than a chamber of the housing. The hold out can include a spring coupled to the sleeve. The hold out can include an electromagnetic coil configured to engage the spring and the sleeve to raise the stem until the metallic balls are moved from positions between the gap of the housing and the stem, to positions between the chamber of the housing and the stem.

The application discloses a new bit slice structure for water-cooled magnets and an insulation mounting method, and the bit slice structure comprises a bit slice body and a flexible insulation sheet; the bit slice body at both ends of a cut is provided with an upper mounting area and a lower mounting area, and the upper mounting area and the lower mounting area are provided with grooves; the insulation mounting method comprises the following steps: placing a first flexible insulation sheet on the upper mounting area of a first bit slice body; rotating the angle of one flexible insulation sheet to place a second bit slice body, so that the lower mounting area of the second bit slice body is pressed and combined with the top surface of the first flexible insulation sheet; and repeating the above steps to stack the bit slice bodies with the flexible insulation sheets in a staggered manner to form a spiral rising current channel. The application has the advantages that the grooves are arranged to increase the contact area of the bit slice body and the flexible insulation sheet, and the water-cooled magnet coil is enhanced in the ability of resisting unbalanced electromagnetic force between the bit slices.

An apparatus and a method for separating a shielding ball are disclosed. An apparatus for separating a shielding ball comprises: an end shield which is installed in a spinning structure of a heavy water reactor facility and includes a fueling tubesheet and a calandria tubesheet facing each other and multiple shielding balls for filling a space between the calandria tubesheet and the fueling tubesheet; as a device for removing the shielding balls from a lattice tube connected to the calandria tube by being connected to the calandria tubesheet through the fueling tubesheet, a magnetic force applying unit inserted into the lattice tube in a direction of the fueling tubesheet to apply a magnetic force for fixing positions of the multiple shielding balls positioned within a first distance from the calandria tubesheet; a mover for moving the magnetic force applying unit in a direction of the lattice tube; and a storage rack for separately storing, inside the end shield, the shielding balls positioned within the first distance from the calandria tubesheet and shielding balls positioned at a distance greater than the first distance.

Fishing lures are disclosed herein. One fishing lure, includes a body having a front portion and a back portion wherein the front and back portion are constructed and arranged such that at least one of the portions can move with respect to the other portion and an electromagnetic field generation system having a magnet and a coil of conductive wire wherein the wire has a contact at each end of the coil and wherein the magnet and the coil are separated from each other such that the magnet is located in either the front portion or back portion and the coil is located in the portion not containing the magnet.

The invention provides an EMB electromagnet, and relates to the technical field of electromagnets, the EMB electromagnet comprises a mounting frame, the side end of the mounting frame is slidably provided with a positioning plate, and the inner side of the mounting frame is provided with a fixed supporting plate; a positioning sleeve is installed on the top of the fixed supporting plate, and magnetic block assemblies are installed on the two sides of the fixed supporting plate. A mounting fixing sleeve is mounted in the positioning sleeve; a fixed inner cylinder is rotationally mounted in the mounting fixed sleeve; positioning pieces are mounted on the outer sides of the two ends of the fixed inner cylinder; and a rotating shaft is mounted in the fixed inner cylinder and the positioning piece. The two shielding rings arranged on the outer side of the positioning sleeve can shield external magnetic force, the influence of external magnetic force interference on the magnetic block assembly is reduced, the magnetic force of the magnetic block assembly can accurately act on the rotating shaft, accurate braking control over the rotating shaft is achieved, and the service life of the rotating shaft is prolonged. The problem that the electromagnet may suffer from interference signals of an external electromagnetic field, an earth magnetic field and the like in the actual application process is solved.

Provided is a downhole device, method, and well system. The downhole device, in one aspect, includes a member and a movable element positioned about the member, the movable element configured to move a stroke distance (D) from a first position to a second position. The downhole device, in this aspect, further includes a ferromagnet assemblies fixed to one of the member or the movable element, and a first electromagnet assembly and one or more additional electromagnet assemblies fixed to an other of the movable element or the member, wherein the first electromagnet assembly is operable to receive electric power to produce a first electromagnetic field having an electromagnetic polarity (Y) and the one or more additional electromagnet assemblies are operable to receive additional electric power and each produce additional electromagnetic fields that alternate between having a second electromagnetic polarity (Y′) opposite the electromagnetic polarity (Y), and the electromagnetic polarity (Y).

To provide a technique for improving motor efficiency in a motor component.SOLUTION: The motor component includes an insulating composite member including a soft magnetic material and a non-magnetic ceramic.SELECTED DRAWING: Figure 1

A method of wafer handling includes providing a wafer on a wafer carrier on a wafer chuck on a vacuum plate. The wafer carrier includes a permanent magnet. The wafer chuck includes an electromagnet. The wafer is raised against a gravity direction by flowing an electrical current through the electromagnet so that the wafer carrier is repelled from the wafer chuck while the wafer remains on the wafer carrier. While keeping the wafer raised, wafer alignment is adjusted by moving the wafer chuck, the wafer carrier or both. The electrical current is reduced to zero so that the wafer carrier contacts the wafer chuck. The wafer is connected to the vacuum plate via a first vacuum cavity of the wafer chuck and a third vacuum cavity of the wafer carrier. The wafer carrier is connected to the vacuum plate via the second vacuum cavity of the wafer chuck.

The invention relates to a device for inducing a current flow in a load, also referred to as a flux pump. The device may comprise a rotor comprising at least one magnetic field generator configured to rotate with the rotor, one or more lengths of superconducting material arranged as an induction coil, a switch, and output terminals configured to connect to a load, the output terminals being connected in parallel with the switch. Rotation of the rotor may move the at least one magnetic field generator relative to the induction coil and switch, such that the magnetic field is periodically applied to the induction coil and switch to induce a current flow in the induction coil through the switch, and to reduce a critical current of the material within the switch, causing the switch to transition from a low-resistance state to a higher-resistance state.

A downhole tool includes first and second electrical conductors and a relay deployed in and rotationally coupled to a first housing. The first and second electrical conductors are electrically connected to the relay. A solenoid is rotationally coupled with a second housing which is rotationally independent from the first housing. The solenoid is configured to actuate the relay and thereby electrically connect or disconnect the first electrical conductor to or from the second electrical conductor.

Systems, methods, and computer readable medium are provided for reducing an undesired magnetic field generated by an electric motor of a vehicle. Reducing an undesired magnetic field generated by an electric motor of a vehicle includes receiving from at least one magnetic field sensor sensing data indicative of the undesired magnetic field emitted into a selected region of a passenger compartment of the vehicle; determining a cancelation magnetic field for at least reducing the undesired magnetic field emitted by the electric motor into the selected region; and directing electrical signals to at least one magnetic field generator positioned in at least one of a passenger seat, a vehicle door, or a frame of the vehicle, for causing the at least one magnetic field generator to generate the cancelation magnetic field for at least reducing the undesired magnetic field emitted by the electric motor through the selected region.

The magnetic valve controls the flow of fluid through a tube. The valve includes a first diode and a first solenoid connected between a first terminal and a second terminal, a second diode and a second solenoid connected in parallel with the first diode and the first solenoid between the first terminal and the second terminal, the second diode being disposed in anti-parallel with the first diode, and a ferrous ball moving between an open position and a closed position. The first solenoid generates a first magnetic field in response to a control signal having a first polarity applied to the first terminal and the second terminal to move the ferrous ball toward the first solenoid to an open position allowing fluid flow, and the second solenoid generates a second magnetic field in response to a control signal having a second polarity to move the ferrous ball toward the second solenoid to a closed position blocking coolant flow, the second polarity being opposite the first polarity.

An apparatus comprising a decoupler for releasing an antitheft device from a product to which the antitheft device is attached. The decoupler comprises a core, an annular magnet assembly, a nonmagnetic plate, and a permanently magnetic ring. The core comprises a permanently magnetic first core portion and a soft magnetic second core portion coaxial with the first core portion. The annular magnet assembly comprises a plurality of permanently magnetic segments collectively surrounding outer peripheries of the first and second core portions. The nonmagnetic plate abuts coplanar surfaces of the magnet assembly segments and the second core portion. The permanently magnetic ring abuts the nonmagnetic plate opposite the magnet assembly.

This invention discloses a magnetically conductive plate assembly, a sound-generating device, and an electronic device, relating to the field of acoustic technology. The magnetically conductive plate assembly includes a body portion and a composite coating disposed on the surface of the body portion. The composite coating includes a first coating and a second coating. The first coating is disposed on the surface of the body portion and is composed of a polycrystalline material. The second coating is disposed on the surface of the first coating away from the body portion. The saturation magnetic induction intensity of the first coating is 1.5~3 T, and the charge transfer resistance of the second coating in a 3.5 wt.% NaCl solution is 1~200 KΩ·cm. 2 The magnetic conductive plate assembly of the present invention aims to solve the technical problem of how to improve the magnetic permeability and corrosion resistance of the magnetic conductive plate assembly.

The stage (500) for supporting and moving the object (502) includes an electromagnet (510), first and second support structures (504, 506), a target (508), and a target-side bumper structure. The electromagnet can include a core, a wire coil (512), and a core-side bumper fixed to the core. The core, disposed on the first support structure (506), is made of a magnetically permeable material. The core is shaped to have poles facing in the same direction. The wire coil generates a magnetic field. The second support structure (504) supports and moves the object relative to the first support structure. The target (508) is disposed on the second support structure (504) to actuate the second support structure in response to the magnetic field. The target-side bumper structure is fixed to the target and can collide with the core-side bumper structure to establish a collision-avoidance gap between the core and the target. The uncertainty value of the collision-avoidance gap is less than 20 microns.

The invention relates to the technical field of particle accelerators, in particular to a high-precision scanning magnet suitable for low-field ultrahigh frequency. The scanning magnet comprises a magnet module provided with an iron core assembly and a coil assembly; the supporting module is provided with a supporting seat, a first supporting assembly and a second supporting assembly; the first supporting assembly and the second supporting assembly are respectively connected with the supporting seat in a sliding manner and are arranged along a straight line, the iron core assembly is fixed on the first supporting assembly, the coil assembly is fixed on the second supporting assembly, and the iron core assembly and the coil assembly are not in contact with each other. According to the invention, the structure of the scanning magnet is optimized, and different supporting assemblies are used for independently supporting the iron core assembly and the coil assembly, so that the iron core assembly can be prevented from being damaged by high-frequency vibration of the coil assembly under an ultrahigh-frequency operation condition, and the magnetic field precision of the scanning magnet can be improved; therefore, the scanning magnet can stably perform high-precision scanning on the particle beam for a long time.

A motor component comprising an insulating composite member comprising a soft magnetic material and a non-magnetic ceramic.

This charging cable provides a mechanism that facilitates storage by allowing the charging cable to adhere tightly to itself and maintain a consistent shape when the charging connector is connected to the charger, as the charger energizes an electromagnet placed on the retracted charging cable. [Solution] The charging cable 10 is connectable to a vehicle. The charging cable 10 comprises a charging connector 40 and an electromagnet 50. The charging connector 40 is located on the side of the charging cable 10 that is plugged into the vehicle when charging. The electromagnets 50 are arranged along the charging cable 10 at regular intervals and spaced apart from each other. When the charging connector 40 is connected to the charger 20, power is supplied from the charger 20 to the electromagnets 50.

The present disclosure relates to a transducer device, a core module, and an electronic device. The transducer device comprises a first coil and a magnet assembly, and at least one first vibration transmission plate connecting the first coil and the magnet assembly. The magnet assembly surrounds a periphery of the first coil, the magnet assembly and the first coil are spaced apart in a radial direction of the transducer device and at least partially overlap in an axial direction of the transducer device. In an operation state in which the transducer device is input with a first excitation signal, the energized first coil generates a first Ampere force in a magnetic field formed by the magnet assembly that causes the first coil and the magnet assembly to move relative to each other without an iron core and a magnetic conductive plate, which is conducive to increasing the sensitivity of the transducer device.

A cold storage material, which has a large specific heat and a small magnetization in an extremely low temperature region and has satisfactory manufacturability, is provided, and a method for manufacturing the same is provided. Further, a refrigerator having high efficiency and excellent cooling performance is provided by filling this refrigerator with the above-described cold storage material. Moreover, a device incorporating a superconducting coil capable of reducing influence of magnetic noise derived from a cold storage material is provided. The cold storage material of embodiments is a granular body composed of an intermetallic compound in which the ThCr2Si2-type structure (11) occupies 80% by volume or more, and has a crystallite size of 70 nm or less.