64results about How to "Improve magnetic strength" patented technology

A tool pouch for holding nails, fasteners and other items has a front section and a back section forming a pocket defining an open cavity. A magnetic assembly is attached to the pocket front section, and a second magnetic assembly is attached to the pocket back section. The magnetic assemblies are aligned such that the first magnetic assembly repels the second magnetic assembly. The positioning and the magnetic strength of the first and second magnetic assemblies are sufficient to bias the opening of the first pocket toward an open position.

The present invention discloses methods and magnetic material composites capable of withstanding one or more loads without the need for a substructure to provide structural support thereto. The magnetic composites are formable from composites such as epoxies, resins, plastics and the like together with rare earth or other magnetic or magnetizable compounds, or magnetic nano-particles to form structural magnetic composites. The magnetic composites have one or more portions with an aggregation of the magnetic material and one or more portions free of or substantially free of the magnetic material. The magnetic composites are suitable for use to form components of electrical motors, generators, pumps, fans, paints, coatings and parts or derivatives thereof.

A jewelry-forming component composing a body member having a first magnetized portion and a female element associated therewith for magnetically attracting and receiving a male element of another jewelry-forming component. The first magnetized portion of the body member provides a minimum magnetic strength that is sufficient to retain the male element within the female element and a maximum magnetic strength that can be overcome by a person's hand strength to separate the male and female elements. The female element defines a cavity having a depth sufficient to receive the male element at different positions therein, and this allows relative movement of the male and female elements to assist in providing the self-sizing nature of the article. The body member also includes a further element that is magnetically responsive for magnetically coupling with another jewelry-forming component, such that a plurality of such components can be magnetically coupled to form an article of jewelry.

The refrigeration performance in a range from 3 to 10 K can be improved in comparison with conventional metal based magnetic regenerator materials. The refrigerator is provided with a regenerator utilizing at least one magnetic material including a rare earth element and sulfur as the regenerator material.

A magnetic article has a magnetic layer having magnetized particles dispersed in a natural or synthetic resin binder and an adjacent high-permeability layer having high-permeability particles dispersed in a natural or synthetic resin binder. The magnetic article may be prepared by co-extruding a mixture of magnetizable particles in a binder and high-permeability particles in a binder through a single die to produce an integral gradient function article having a region of high concentration of magnetizable particles adjacent to one surface of the article and a region of high concentration of the high-permeability particles adjacent to another surface of the article, and magnetizing at least a portion of the magnetizable particles.

A diagnostic assay device that directs an applied sample to the analytical membrane of a directed flow device. The device has a sample receiving port defined by layers of built-up material on one end of the test strip. The port contains the sample and specifically directs it to the membrane in a controlled fashion. Additional features include configuration of the housing in a general C-shape with the test strip spanning the opening of the C-shape to allow access by a reader device. A preferred method employs superparamagnetic particles to label the target analytes for detection and measurement by means of an electromagnetic reader device.

The invention relates to an immobilized enzyme for a magnetic nanometer clay carrier. The immobilized enzyme comprises a carrier with saccharifying enzyme and corresponding immobilized enzyme as immobilizing objects. The immobilized enzyme is prepared by taking a covalence coupling method as an immobilizing method and is characterized in that: the carrier is a magnetic nanometer Fe3O4@ clay compound material; the magnetic nanometer Fe3O4@ clay compound material is composed of magnetic Fe3O4 nanometer grains and a nanometer clay material; and the magnetic Fe3O4 nanometer grains are assembled on the nanometer clay in sequence. A superparamagnetic Fe3O4@ clay compound material is prepared by adopting a solvent heat method according to the invention; the surface of the Fe3O4@ clay compound material is modified by using gamma-aminopropyl triethoxy silane, and then glutaraldehyde is used as a coupling agent for covalently fixing the saccharifying enzyme on the surface of the carrier; two novel carrier regenerating strategies are designed; after the saccharifying enzyme is immobilized by the regenerated carrier, the excellent properties, such as original activity, thermal stability and reusability, of the immobilized enzyme are still maintained; and the immobilized enzyme is also suitable for the regeneration of the immobilized enzyme carrier according to the covalence coupling method.

A magnetic separator for a mineral feed comprising, a rotatable drum having an attraction surface, an inlet for receiving a stream of the mineral feed and directing it past the rotating drum, means for generating a magnetic field to attract magnetic components in the feed to the attraction surface, a first zone for take off of non-magnetic components of the mineral feed, and a second zone for take off of the magnetic components, wherein the magnetic field generating means are adapted to subject the magnetic components to at least one reversal of polarity of the magnetic field as the drum rotates.

A magnetic separator for a mineral feed comprising, a rotatable drum having an attraction surface, an inlet for receiving a stream of the mineral feed and directing it past the rotating drum, means for generating a magnetic field to attract magnetic components in the feed to the attraction surface, a first zone for take off of non-magnetic components of the mineral feed, and a second zone for take off of the magnetic components, wherein the magnetic field generating means are adapted to subject the magnetic components to at least one reversal of polarity of the magnetic field as the drum rotates.

The magnetic recording medium composition contains ferromagnetic powder, binder, and a crosslinkable component selected from the group consisting of a component capable of forming a crosslinking structure by a radical reaction, a component capable of forming a crosslinking structure by an ionic reaction, and a component capable of forming a crosslinking structure by a pericyclic reaction, wherein the crosslinkable component contains at least polyester, and the polyester has a weight average molecular weight ranging from 1,000 to 20,000, as well as contains, per molecule, one or more acidic groups, and one or more reactive groups selected from the group consisting of a radical reactive group, an ionic reactive group, and a pericyclic reactive group.

The refrigeration performance in a range from 3 to 10 K can be improved in comparison with conventional metal based magnetic regenerator materials.The refrigerator is provided with a regenerator utilizing at least one magnetic material including a rare earth element and sulfur as the regenerator material.

An assembly for loading and conveying ferrous metal articles including a magnet having north and south poles, an axis between the north and south poles, the poles forming an annular belt support; a powered conveyor belt extending over the belt support for rotating the magnet, the magnet being segmented along the polar axis, a first polar axis segment being a magnet mounting plate, a plurality of second polar axis segments being sub-magnets, each such sub-magnet overlying or underlying the magnet mounting plate having north and south poles, and having a polar axis, and a third polar axis segment being a sheath extending annularly about the magnet's first and second polar axis segments, the sheath having a radially outer surface forming the magnet's annular belt support.

The invention provides a mechanical and electrical integration harmonic reducer. The harmonic reducer is arranged in the center position of the interior of a shell. An outer rotor brushless permanentmagnet motor is arranged on the periphery of the interior of the shell. Through mechanical and electrical integration, the space in the shell is made full use of, the magnetic intensity of a rare earth permanent magnet outer rotor is large, and the efficiency of the motor under the high-speed running state is high. The harmonic reducer is mounted in the center of a coreless permanent magnet motorand is coaxial with the outer rotor brushless permanent magnet motor at different speeds. According to a wave generator, a flexible outer gear ring is supported through multiple pulleys and becomes anelliptic outer gear ring. When the wave generator rotates at high speed, the flexible outer gear ring becomes the fluctuation distortional elliptical outer gear ring rotating at low speed and is small in fluctuating resistance and low in noise. The mechanical and electrical integration harmonic reducer is small in size, light in weight, high in bearing capacity, large in transmission ratio and high in transmission precision and is widely applied to the machinery field, especially in the robot manufacturing field.

A method for contactlessly determining an exact passage of an athlete at points placed along a track in sports, wherein the method comprises gearing the athlete with a wearable magnetometer sensor unit, whereby the magnetometer sensor unit is equipped with at least a magnetic sensor, a processing unit, and a storage medium; placing at each point at least a permanent magnet in proximity of a track surface of the track. When the athlete moves along the track, the method further comprises recording at the magnetic sensor a signal; detecting for each permanent magnet a disturbance of a local magnetic field generated by the permanent magnet in the recorded signal and measuring the disturbance; mapping of the measured disturbance to a movement speed of the athlete and a distance of the athlete to the magnet corresponding to the local magnetic field; and correcting the movement speed and the distance for a time offset between the magnet passage of an athlete's center of mass and the magnetometer sensor unit.

The invention provides a preparation method of magnetic fluid, comprising: adding excessive alkaline aqueous solution into the aqueous solution containing ferrous ions and ferric ions; processing precipitation reaction under protective gas, separating the products of precipitation reaction to obtain Fe3O4; adding the Fe3O4 and surface active agent into carrier liquid to be heated, separating to obtain the product of heating process, and obtaining magnetic fluid, wherein the mol ratio of the ferrous ions and the ferric ions in the aqueous solution containing ferrous ions and ferric ions is 1.4-1.8: 1. The invention further provides a preparation method of magnetic chitosan microsphere, adopting the magnetic fluid prepared by the aforementioned method. The magnetic chitosan microsphere containing the inventive magnetic fluid is more suitable to be the carrier of immobilized enzymes.

The invention discloses a preparation method of difunctional magnetic fluorescent nanocomposite Fe3O4@CDs microspheres. Core-shell nanocomposite Fe3O4@CDs are synthesized from bottom to top, firstly,a silane reagent (2(aminoethyl)propyltrimethylsilane / 3-aminopropyltriethoxysilane) is utilized for modifying and constructing an Fe3O4@SiO2-NH2 core-shell structure, quenching of CDs fluorescence dueto magnetic particles is effectively reduced, and then a magnetic nanocomposite with high fluorescence intensity is prepared from ammonium citrate / citric acid as a carbon source and ethanediamine / triethylene tetramine as a nitrogen source with a one-pot method. The prepared composite is high in magnetic intensity, good in dispersity and excellent in fluorescence properties, and is expected to be widely applied to the fields of environmental governance, targeted therapy, fluorescence labeling and the like.

The invention discloses a blocky magnetic carpet. The carpet is divided into a base carpet layer, an EVA pre-smearing glue layer, an upper layer PVC glue layer, glass wool cloth and a lower layer PVC magnetic glue layer from top to bottom in sequence. Meanwhile, the invention further discloses a preparing method of the carpet. The preparing method of the carpet comprises the steps of firstly smearing EVA pre-smearing glue on the back of the base carpet layer, and conducting drying and curing to prepare a base carpet with a pre-smearing layer; then pressing the upper layer PVC layer and the lower layer PVC magnetic glue layer with the base carpet through glue formula matching and design of technological parameters and by adding the glass wool cloth into the upper layer PVC layer and the lower layer PVC layer, delivering the upper layer PVC layer and the lower layer PVC layer into a drying oven to conduct a plasticizing reaction for forming and block cutting, and conducting magnetizing to prepare the magnetic square carpet. According to the preparing technology of the magnetic square carpet, the cost can be lowered by a large margin, the purpose that the size is stable is achieved, and torsion and layering do not easily occur.

The invention relates to an iron-remover for filtering iron filings or steel chippings in ceramic slurries, comprising a magnet and a trap positioned within the range of the magnetic field of the magnet, wherein the trap is used to allow the circulation of materials and simultaneously absorb and remove the iron filings in the materials. The iron-remover provided by the invention is characterized in that the a magnetizer with low magnetic resistance is disposed within the magnetic field of the magnet and arranged along the direction of magnetic induction lines; the trap is embedded in the magnetizer. The magnetic field within the magnetizer is distributed more uniformly and then the magnetic field within the trap embedded in the magnetizer is distributed uniformly so as to avoid the uneven distribution of magnetic force. In the meanwhile, as the magnetic resistance of the magnetizer is less than that of air, the loss of magnetic force transmitted within the magnetizer by the magnetic field is decreased. Therefore, the trap has a greater intensity of magnetic force to absorb and remove the iron filings as well as a better effect for removing iron. The electric magnetic iron-removing effect of the trap is improved simultaneously from two aspects. Thus, the iron-removing effect of the whole iron-remover is more reliable.

Magnetic powder includes: at least one epsilon-phase iron oxide-based compound selected from the group consisting of ε-Fe2O3 and a compound represented by Formula (1); and a surface treatment layer including a silane compound on at least a part of a surface. The magnetic powder has an average particle diameter of 8 nm to 20 nm. The content ratio of carbon atoms of the silane compound included in the surface treatment layer to iron atoms of the at least one epsilon-phase iron oxide-based compound selected from the group consisting of ε-Fe2O3 and the compound represented by Formula (1) is 0.05% to 0.5% in terms of the number of atoms. A manufacturing method thereof and applications thereof are also provided. In Formula (1), A represents at least one metal element other than Fe and a represents a number that satisfies a relationship of 0<a<2.ε-AaFe2-aO3  (1)

The invention relates to an electric conversion system of a pure electric vehicle and an electric vehicle, wherein the electric conversion system comprises a vehicle body fixing part, a locking mechanism and a controller; the locking mechanism is used for fixing a battery box body and rotationally locking / unlocking the battery box body on the vehicle body fixing part, and the locking mechanism isprovided with two extension shafts extending outwards; magnetic elements are fixed at the near end parts of the two extension shafts, wherein the magnetic pole directions of the magnetic elements areconsistent with the length directions of the extension shafts; a Hall sensor corresponding to the position of the magnetic element when the locking mechanism is in a locked state is arranged on the vehicle body fixing part; the controller acquires a signal of the Hall sensor to detect the locking / unlocking state in real time. According to the electric conversion system of the pure electric vehicle, a driver and passengers can directly obtain the locking and unlocking states of the locking mechanism according to the detection information of the controller, and the driving safety can be guaranteed.

A magnetic jewelry-forming component for preparing a jewelry article. The article includes a body member configured and dimensioned in an ornamental shape and having a first magnetizable portion for attractive or repulsive magnetic association with at least one other magnetic jewelry-forming component and at least one further element for magnetically coupling to the at least one other magnetic jewelry-forming component. Advantageously, the body member has a magnetic strength that can be overcome by a person's hand strength such that the body member and at least one other magnetic jewelry forming component can be placed in different positions relative to each other. Also, the further element includes (a) a second magnetized portion that has a polarity that is different from that of the at least one other magnetic jewelry-forming component so that it is magnetically attracted thereto or (b) a retaining structure that prevents complete separation of the body member from the at least one other magnetic jewelry-forming component when the first magnetized portion of the body member has a polarity that is the same as that of the at least one other magnetic jewelry-forming component so that it is magnetically repulsed therefrom. These components enable the jewelry article to be self-sizing by repulsion or attraction, to include the use of multiple fields to reduce damaging magnetic emanations from the article, or to control position or motion of the components in the article to provide highly desirable and unusual jewelry articles.

A permanent magnet, in particular a permanent magnet rotor for a machine, includes a first sleeve, a first cap and a second cap arranged to close off an inner opening of the first sleeve, and a permanent magnet material formed in the inner opening of the sleeve between the first cap and the second cap. The permanent magnet material is a compressed, non-bonded powder material including hard magnetic powder material, soft magnetic powder material, or a combination of hard and soft magnetic powder material. A method for manufacturing a permanent magnet rotor is also provided.

An assembly for loading and conveying ferrous metal articles including a magnet having north and south poles, an axis between the north and south poles, the poles forming an annular belt support; a powered conveyor belt extending over the belt support for rotating the magnet, the magnet being segmented along the polar axis, a first polar axis segment being a magnet mounting plate, a plurality of second polar axis segments being sub-magnets, each such sub-magnet overlying or underlying the magnet mounting plate having north and south poles, and having a polar axis, and a third polar axis segment being a sheath extending annularly about the magnet's first and second polar axis segments, the sheath having a radially outer surface forming the magnet's annular belt support.

Finger grip and connector for portable electronics, in particular cell phones. The grip includes a metallic ring. The ring adheres to the back of a cell phone, or case. The grip includes a corresponding ring of magnets for a grip assembly to magnetically attach to the metal ring adhered to the cell phone. The grip design provides infinite rotation of the grip assembly relative to the phone for holding the phone in various positions. The grip provides a support for viewing content on the electronic device at different angles and orientations. The grip provides a means of magnetically attaching a cell phone to metallic surfaces, chargers, mounts, and other devices. The grip can allow for wireless charging, which is optimized and enabled by a relatively large open inner diameter of the metallic ring and corresponding magnets. The grip can retract to be less than 3 millimeters in total thickness.

The invention relates to a preparation method of natural fiber compounded magnetic hydrogel, and belongs to the technical field of hydrogel preparation. Soaking by a sodium hydroxide solution is used for weakening the bonding force among fibers; then, steam blasting treatment is used, so that straw fibers are decomposed into monomer fibers and fiber bundles; then, liquid nitrogen is used for fast cooling, so that the fibers subjected to blasting decomposition are frozen; through ball milling treatment, the fibers are broken into nano-scale fibers; then, a polyhydroxyl characteristic of the surfaces of the nano-scale fibers is used; chemical bonds and physical adsorption are formed with magnetized nanometer ferroferric oxide crystals; through ultrasonic dispersion and freezing treatment, the natural fiber compounded magnetic hydrogel in uniform distribution is obtained. The natural fiber compounded magnetic hydrogel prepared by the method has the advantages that the magnetic intensity is high, and can reach 46.6 to 47.8 emu / g; the stretching intensity is good, and can reach 630 to 720kPa.

A transformer includes a magnetic core assembly and a hollow pad. The magnetic core assembly includes a first magnetic part and a second magnetic part. Each of the first magnetic part and the second magnetic part includes a middle post. The hollow pad is arranged between the middle post of the first magnetic part and the middle post of the second magnetic part. The hollow pad has an opening for accommodating a gluing material. The first magnetic part and the second magnetic part are combined together through the gluing material.

The invention discloses a non-contact electromagnetic coupling cylindrical liquid pump system in the technical field of medical equipment. The non-contact electromagnetic coupling cylindrical liquid pump system comprises a pump body; the pump body comprises a first pumped liquid flowing cavity, a magnetic control cavity and a second pumped liquid flowing cavity which are sequentially connected; at least four groups of coil assemblies are arranged at equal intervals outside the magnetic control cavity along the length direction of a cavity body of the magnetic control cavity; a magnetic rotor is arranged in the magnetic control cavity; the magnetic rotor can move under the control of the coil assemblies; and elastic thin films are respectively arranged in the first pumped liquid flowing cavity and the second pumped liquid flowing cavity. The non-contact electromagnetic coupling cylindrical liquid pump system directly utilizes electromagnetic coupling, abandons a motor and a mechanical transmission structure and avoids mechanical loss and heat production. Meanwhile, the non-contact electromagnetic coupling cylindrical liquid pump system has the advantage of overload resistance of a stepping motor and commonly can resist to 2 to 3 times of overload and possibility that coils are overloaded to generate heat and even be burnt down is greatly reduced.

The invention relates to a device for pushing a pointer of a revolution meter to deviate. A pure ion plate with an output shaft base, a sector Nd-Fe-B magnet and an Omega-shaped pure iron are sequentially installed inside a plastic lower shell. An output shaft sleeve and an insulation plate for adjusting the tension of a hair spring are installed on the middle part of a crossbar on the upper part of a plastic upper shell, and the insulation plate is provided with two small copper pieces for fixing the head of the hair spring and an electric signal lead-in point. An output shaft is arranged inside the base and passes through the output shaft sleeve, and an extension part of the output shaft is used for holding the pointer. The output shaft is provided with a cross plastic piece, a forward-reverse hair spring and a hair spring spacing piece. The cross plastic piece is provided with a balance block and a coil. The coil is sleeved on the Omega-shaped pure iron. The plastic upper and lower shells are fixed by screws. When a revolution electric signal enters from the electric signal lead-in point, and the hair spring is used for conducting the electricity to the coil, an electromagnetic field is generated, under the mutual effect of the electromagnetic field, the magnetic field of the magnet and the hair spring, the output shaft deflects for a given angle so as to indicate the revolution.

The invention relates to a one-pot method for synthesizing a functional carbon-based magnetic solid acid catalyst. According to the invention, nanometer ferroferric oxide, glucose, citric acid, vanillin and hydroxyethyl sulfonic acid are used as raw materials, and a novel one-step hydrothermal precipitation-sulfonation method is adopted for synthesizing the carbon-based magnetic solid acid catalyst C-SO3H@Fe3O4 / C. Research results show that the synthesized catalyst has acidity of up to 1.23 mmol / g and magnetic strength of 15.65 Am<2> / kg. When the catalyst is used for hydrolyzing bagasse havingundergone alkali-freezing pretreatment at 180 DEG C, glucose with a yield of 62.59% and total reducing sugar with a yield of 73.01% can be obtained. In addition, the used catalyst can be separated and recovered under the action of an external magnetic field, and the recovery rate of the used catalyst can reach 93.18%. After the catalyst is recycled five times, the catalyst can still catalyze thehydrolysis of the bagasse to obtain glucose with a yield of 54.47% and total reducing sugar with a yield of 60.65% of total reducing sugar. The C-SO3H@Fe3O4 / C catalyst provided by the invention can efficiently catalyze the conversion of bagasse into fermentable sugar, and the catalyst shows good catalytic activity and stability.