259 results about "Magnetic wires" patented technology

Magnetic wires that include two antiferromagnetically coupled magnetic regions show improved domain wall motion properties, when the domain walls are driven by pulses of electrical current. The magnetic regions preferably include Co, Ni, and Pt and exhibit perpendicular magnetic anisotropy, thereby supporting the propagation of narrow domain walls. The direction of motion of the domain walls can be influenced by the order in which the wire's layers are arranged.

Digital information is stored in an unpatterned magnetic film, using the inherent, natural properties of the domain walls in ferromagnetic materials to write data on an unpatterned magnetic film. Data is read from the unpatterned magnetic film using magnetic tunneling junctions (MTJs). To achieve sufficient thermal stability, the magnetic fields required to change the orientation of these magnetic regions may be much larger than can be provided by currents passing through wires. This larger magnetic field is achieved by using the domain wall fringing field generated at the boundary between two magnetic domain walls. The magnetic regions are written by using the fringing fields from magnetic domain walls in neighboring magnetic wires. These wires are brought close to the magnetic storage layer where the magnetic storage regions are to be written.

A flux-gate magnetometer torque sensor is provided having a rotatable shaft to which a torque force is to be applied, a sleeve of conductive foil affixed to the surface of the shaft over the magnetically active regions, a plurality of saturable magnetic wires or strips mounted to the rotatable shaft and parallel to an axis of rotation, sensor circuitry containing an oscillator for generating a signal, a divider coupled to the oscillator for dividing the frequency of the signal by two, a first and second coil each surrounding a different section of the rotatable shaft and having an input coupled to the divider output, a multiplier having inputs coupled to outputs of the first coil, the second coil, and the oscillator, and an integrator having an input coupled to the multiplier output and an output coupled to both outputs of the first and second coils, wherein the output voltage of the integrator corresponds to the torque being applied to the rotatable shaft.

The present invention is directed to an inductively driven electromagnetic linear actuator arrangement employing eddy currents induced by a fixed drive coil to drive its armature. Eddy current focusing fields are employed to direct the eddy currents using Lorentz forces to maximize armature speed. The armature includes a shorted driven coil in a DC magnetic field. This can be supplied by a permanent magnet. When current is applied, a force is felt by the coil in a direction perpendicular to the magnetic field. Such an actuator is well suited for electrical switching applications including transfer switching applications, circuit breaker applications, and ground fault interrupter applications.

A linear motor includes a stator including a stator core for forming plural magnetic poles and a magnetic wire mounted on the stator core, and a mover provided at the interior of the stator and including a mover core and a magnet mounted on the outer side of the mover core. The linear motor has the magnet have a reduced mass, thus having a small size, a low overall cost, and a high operating efficiency.

A method for solder welding aluminum electromagnetic wire and brass comprises aluminum electromagnetic wire and brass connector. The invention comprises that first plating nickel on the surface of brass connector to improve the connecting strength between the solder and the brass connector and the corrosion resistance of aluminum copper connector, while said nickel layer can insulate aluminum atom and copper atom to avoid them to form rigid metal compound layer which will reduce the strength of connector, then using drug Al-Si rigid solder as non-corrosion aluminium fluoride potassium, using flame welding to weld the aluminum electromagnetic wire and the nickel layer of brass connector, the brass connector is treated with neutral oil removing, ultrasonic oil removing, water washing, acid washing, water washing, activating, waster washing, nickel plating, and drying. The inventive aluminum electromagnetic wire and brass connector have same anti-drawing strength, while the resistance of aluminum copper connector is less than the aluminum electromagnetic wire.

A manufacturing method of one dimension nano magnetic wires is provided. In the method, the one dimension nano magnetic wires having high magnetization and low coercive force are synthesized from a liquid by means of reduction with an applied magnetic field under normal atmospheric temperature and pressure. The one dimension nano magnetic wire is selected from the groups consisting of iron (Fe), cobalt (Co), nickel (Ni), and composites and an alloy thereof.

A high sensitivity magnetic anomaly detector for geomagnetic exploration comprises a shorted coaxial transmission line having as central conductor an amorphous magnetic wire. A static magnetic field is applied along the transmission line. A transverse electromagnetic wave also propagates along the transmission line and excites a ferromagnetic resonance of the magnetic ions located within the depth of penetration of the circumferential microwave magnetic field into the magnetic wire. The microwave giant magnetoimpedance effect occurring in the magnetic wire changes the magnetic wire impedance as follows: the real part of the impedance peaks and the imaginary part passes through zero at a given frequency (the ferromagnetic resonance frequency). This frequency depends on the saturation magnetization of the magnetic wire and the strength of the static magnetic field. A slight variation of the Earth's magnetic field (a magnetic anomaly) changes this frequency, thus providing information about large metallic masses hidden under the Earth's surface or underwater.

The invention discloses a multifunctional reflection-type magneto-optic spectrum measuring system which uses a super-continuous white light source, a grating monochromator, a plurality of polarized lenses, a photoelastic modulator, a broad band 1 / 4 and 1 / 2 wave plate, a non-polarization beam splitter (NPBS), a single-ended differential detector and an OXFORD low-temperature superconducting magnet system to form a spectrum detection system with a flexible and variable structure. The invention can realize the measurement of reflection-type magnetic circular dichroism (MCD), polar magneto-optical Kerr effect, polarized reflection spectrum and magnetic wire magnetic linear dichroism (MLD) on the same light path. The system has high sensitivity and can be used for fields, such as basic physics research, material characteristic analysis, light polarization modulation communication and the like.

The invention discloses a static spraying powder paint and preparing technology for electromagnetic wire and enameled wire, which comprises the following parts: 60-88% resin, 7-15% solidifier, 1-5% dye, 0-20% filler, 2-6% adjuvant. The preparing method comprises the following steps: blending the materials together; fusing to squeeze; cooling to indoor temperature; grinding into piece shaped material; separating the grinded powder into less than 160 order semi-product; demagnetizing to obtain the product.

A small, low-voltage direct current (DC) motor for use as an educational device for students. The motor is made from simple hardware such as nails, magnets, threaded rods, nuts, washers and common household materials such as wood scraps, paper clips and milk or water containers. The preferred embodiment consists of a motor shaft 1, armature pole pieces 2 comprising nails, commutator segments 3, non-metallic tubing 4, non-metallic washers 5 and 6, metallic washers 7, hot-glue or epoxy filler 8, armature pole nuts 9, magnetic wire 10, commutator compression nuts 11, permanent field magnets 13, brushes 14 and terminal screws 15. In other embodiments, the nail motor can also be used to demonstrate alternating (AC) operation by replacing permanent field magnets with handmade nail- or bolt-electromagnets. The motor can be used to motorize models utilizing materials and instruction from a kit. The motor can also be used to demonstrate electric generator principles in the mill-volt range.

A magnetic wire pulling system advances wire through a house or other structure around obstacles with a string tied to a pulling cord then tied to the wire. The system has small, medium, and large magnets, and tools attracted to the magnets. The round small and medium magnets are tied upon strings wound upon spools. The spools have pins to secure magnets. The tools comprise a retrieval tool, a manual release tool, an insertion tool, an automatic release tool, a transfer tool, an extensible prop, and a telescoping pole with magnet. The tools deliver a magnet into the structure of a house, retrieve a magnet from the structure, or transfer a magnet from one tool to another tool. In operation, a bigger magnet attracts a smaller magnet or a magnet attracts a tool to advance a string beyond an obstacle to continue pulling wire.

The present invention relates to a multi-sensor combined type automatic parking space guiding method. According to the invention, an automatic parking cloud platform and an upper computer control system are constructed. Magnetic wires are paved on the ground. Empty parking spaces available for parking vehicles are positioned through a track control system, and magnetic wires leading to the parking vehicles are also positioned. The automatic parking cloud platform acquires the information of various sensors and then conducts the accurate line patrol for the magnetic wires leading to the parking vehicles based on the acquired information of various sensors. In this way, the unmanned automatic parking space guiding function based on the combination of various sensors is realized, so that the unmanned-driving automatic parking function is realized. Based on the multi-sensor combined type automatic parking space guiding method, the unmanned-driving automatic parking space guiding operation is conducted, so that the construction cost of an unmanned automatic parking lot is reduced.

The present invention discloses a insulating powder paint exclusively used on electro-magnetic wires, which includes the following components that measured in weight percentage: epoxy resins 60-70%, firming agent 15-30%, inorganic filler 10-20%, flatting agent 1.0-2.0%, styrax benzoin 0.3-1.0%, curing accelerator 0.8-2.0% and siliceous reinforcing agent 0.1-0.3%. The insulating powder paint exclusively used on electro-magnetic wires can be painted either by electrostatic painting or ebullated bed dipping to obtain round wire and lenticular wire in different specifications with solidification temperature 200 DEG C and solidification time 10 to 30 minutes. The coating layer of the painted electro-magnetic wires has semitransparent neat and smooth appearance, excellent flexibility, favorable corner coverage, excellent electroinsulating property and heatproof property, and can meet level 180 electroinsulating property requirement that prescribed in GB6109.

The invention provides a one-dimensional permanent magnetic nano-material, in which hard magnetic tubes are coated with soft magnetic wires and a preparation method thereof. The material has a composite structure that hard magnetic nano-tubes prepared from hard magnetic phase FePt or CoPt alloy are coated with soft magnetic nano-wires prepared from soft magnetic phase pure metals including Fe, Co and Ni or binary and ternary alloy, wherein, the diameter of the one-dimensional permanent magnetic nano-material is 10nm to 220nm; the diameter of the soft magnetic phase nano-wires is 4nm to 60nm; and the wall thickness of the hard magnetic phase nano-tubes is 3nm to 80nm. The preparation method of the material comprises the following steps: firstly, preparing the hard magnetic alloy nano-tubes in a porous anodic alumina template by using the template wetting method; and then, growing the soft magnetic nano-wires in the nano-tubes by using the electrochemical deposition method. The invention has the advantages that the size of the one-dimensional permanent magnetic nano-material is controllable and the preparation method is simple.

The invention discloses a magnetic navigation automatic meal delivery robot system and an automatic meal delivery method. An inductive transducer inside a robot is used for inducting a magnetic wire around, the position of the robot is obtained, and the robot runs along the track of the magnetic wire. When a reed switch inside the robot inducts a magnet in the stop position, the robot stops running, and accurate stop is realized. When the robot reaches the stop position, a sound prompt is given out, so that a customer can take the meal or give empty dishes back according to the prompt. By means of the scheme, automatic tracking and accurate stop can be realized, and the magnetic navigation automatic meal delivery robot system is convenient to use and high in efficiency.

A solar electric generator is disclosed that includes a sealed cylindrical casing having a depression in the cylindrical wall, the casing being made of a material that allows the energy of sunlight therethrough, a magnetic wire coiled in the depression, a strut positioned within the casing along a center axis, and a plurality of magnetized vanes configured to rotate (with low friction) on the strut proximate the depression, the vanes having a black side and a white side, an outer portion of the vane being shaped to correspond to the depression in the casing. Other embodiments and methods of generating an alternating current are also disclosed.

The invention relates to a pipe connection clamp which is characterized by comprising a housing in a hoop structure, wherein the housing comprises two hoop plates which are folded and connected, one end of one hoop plate is hinged with one end of the other hoop plate, and a handle which is convenient to grip is extended from the hinge joint of the two hoop plates; and a magnetic layer, a silica gel layer and a magnetic wire coil are sequentially arranged on the inner side of each hoop plate to the outer side along the bottom of the plate, and the magnetic wire coils are electrically connected with the outside. The invention aims at providing a pipe connection clamp which is simple to use, simple to mount and good in anti-corrosion performance and can firmly connect metal / plastic composite pipes, an electromagnetic induction pipe connection device using the pipe connection clamp and a pipeline electromagnetic pipe connection method. By using the invention, pipe fittings and pipes can be effectively combined together, a metal layer is arranged in the plastics to achieve the effects of permanent seepage prevention and absolute corrosion prevention, the mounting process is convenient, and the connection is firm.

A magnetic wire pulling system advances wire through a house or other structure around obstacles with a string tied to a pulling cord then tied to the wire. The system has small, medium, and large magnets, and tools attracted to the magnets. The round small and medium magnets are tied upon strings wound upon spools. The spools have pins to secure magnets. The tools comprise a retrieval tool, a manual release tool, an insertion tool, an automatic release tool, a transfer tool, an extensible prop, and a telescoping pole with magnet. The tools deliver a magnet into the structure of a house, retrieve a magnet from the structure, or transfer a magnet from one tool to another tool. In operation, a bigger magnet attracts a smaller magnet or a magnet attracts a tool to advance a string beyond an obstacle to continue pulling wire.

A system for preventing unauthorized access to a firearm trigger includes a database of PIN numbers associated with a plurality of trigger locks and access tokens, each corresponding trio represented by an identification code. At purchase, a purchased firearm includes a two-piece trigger lock along with an access token. Each token includes a unique configuration of ferro-magnetic wires. If a background check of the firearm purchaser is approved, a central computer coupled to the database and to a computer network displays a personal identification number (PIN). Entry of this PIN into a keypad on a corresponding trigger lock actuates a read head therein and a token may be positioned thereby. A processor coupled to the read head is able to determine if the trigger lock and token match and, if so, to release of the trigger lock.

This present invention refers to a combined terminal and casing for establishing electrical contact between a multi-wire cable and a magnetic wire that uses the insulation displacement connector (IDC) concept, wherein the terminal (11, 25) has holes (12, 26) and closed channels (13, 27) to receive the multi-wire cable (23, 36) and openings (14, 28) to receive the magnetic wire (24, 37) linked to narrow slots (15, 29). The casing (18, 31) has through-holes (20, 21, 32, 34) for inserting the multi-wire cable (23, 36) and the magnetic wire (24, 37), as well as an opening (19, 35) to receive the terminal. Inserting the terminal into the casing causes the pressure exerted on the multi-wire cable and the magnetic wire to force the entry thereof into the narrow channels, causing the isolation layer to be withdrawn, providing electrical contact between the multi-wire cable and the terminal, between the magnetic wire and the terminal and, consequently, between the multi-wire cable and the magnetic wire.

The invention discloses a preparation method of a magneto-rheological elastomer with programmable magneto-deformation, which comprises the following steps: a, printing magnetic short fibers with specific distribution and orientation on a magnetic wire rod through a 3D printer, and applying a magnetic field in the printing process to regulate and control the magnetic domains of the short fibers; and b, packaging the magnetic short fibers printed in the step a by using silicone rubber, and curing to prepare a magneto-rheological elastomer material with anisotropic magnetic moment inside. The magnetic short fibers with arbitrary distribution and orientation can be printed by using the 3D printer; therefore, the magnetic moment of the magneto-rheological elastomer under the magnetic field canbe designed, any magneto-deformation property can be obtained, the programmable deformation driving capacity of the magneto-rheological elastomer is achieved by designing the magnetic moment in the magneto-rheological elastomer, and the magneto-rheological elastomer is endowed with rich driving capacity.

The invention discloses a PCB transformer made of the flexible magnetism materials and the device of the novel PCB transformer, characterized in that: (1) the flexible magnetic conductive material with higher magnetic permeability is adopted to compose the magnetic core of the PCB transformer, wherein the magnetic core materials can be the electrician pure iron, the doped improved magnetism materials or other novel magnetic conductive materials; (2) the magnetic core structure can adopt the multi-corelong magnetic wire structure; (3) the magnetic core structure can adopt the braid over braid structure; (4) the magnetic core structure also can adopt the thin laminarization flexible magnetic tape structure; (5) the magnetic core and the coil of the PCB transformer adopt the matrix structure. The flexible magnetic conductive material materials and the PCB transformer design are combined, meanwhile the magnetic core of the PCB transformer and the coil adopt the matrix design project, to reduce the volume of the transformer, reduce the cost of the transformer and the number of the PCB ply.

The invention provides a superconducting magnetic separator which comprises a superconducting magnetic system, a magnetic wire rotary drum (15), a positioning system of the magnetic wire rotary drum, a driving system of the magnetic wire rotary drum, a support (10) of the superconducting magnetic separator and the like. The superconducting magnetic system comprises a housing (1) of the superconducting magnetic system and a magnetic core coil (4), and the magnetic core coil (4) is wrapped by the housing (1) of the superconducting magnetic system; the magnetic wire rotary drum (15) is positioned on the support (10) of the superconducting magnetic separator by the positioning system of the magnetic wire rotary drum, and the magnetic wire rotary drum (15) penetrates the center of the superconducting magnetic system and can rotate freely around the point of the center of a circle under the driving of the driving system of the magnetic wire rotary drum. The superconducting magnetic separator utilizes the central part with the strongest magnetic field intensity in the superconducting magnetic system, fully utilizes the energy of a magnetic field and the electrical energy, and can better separate and sort a variety of components with different magnetisms in ores; furthermore, the superconducting magnetic separator has convenient mounting, easy control and easy maintenance and can avoid the interferences of the magnetic field. The superconducting magnetic separator can also be applied in foods, biotechnology, pharmaceutical industry, medicine, medical industry and other fields.

The invention is an asynchronous starting magnetic resistance synchronous electromotor, which relates to a magnetic resistance synchronous electromotor, including a stator component, and a rotor part. The magnetic resistance synchronous electromotor adopts a claw pole part to generate a stator rotating magnetic field, a squirrel cage guide cuts the magnetic wire of the stator rotating magnetic field to generate an asynchronous starting rotational distance, leading the rotor part to a synchronous rotating speed. The rotor salient pole of the rotor part and the stator rotating magnetic field work mutually to generate a synchronous rotational distance of magnetic resistance nature. Two stator winding group is an integrated winding group, the fabricating automation degree is high, and the cost of human work is low. The magnetic resistance synchronous electromotor can start asynchronously, has the advantages of high motor efficiency and low cost, and satisfies the requirements of small power synchronous electromotor for energy saving electromotor.

A manufacturing method of one dimension nano magnetic wires is provided. In the method, the one dimension nano magnetic wires having high magnetization and low coercive force are synthesized from a liquid by means of reduction with an applied magnetic field under normal atmospheric temperature and pressure. The one dimension nano magnetic wire is selected from the groups consisting of iron (Fe), cobalt (Co), nickel (Ni), and composites and an alloy thereof.

The invention provides a magnetic wire and a recording medium. The magnetic wire includes a magnetic metal wire material having a surface coated with a layer of an insulating material. The magnetic wire has a magnetic coercive force of 30 A / m or less and has a Barkhausen effect.