82results about How to "Reduce magnetic attraction" patented technology

An apparatus for removably retaining by magnetic attraction any of various modem handheld devices. The magnetic mounting apparatus provides a magnetic mounting platform having a socket-like recessed support surface surrounded by a raised lip and backed by an interface structure that secures the magnetic mounting platform assembly to an external mounting surface. A permanent magnet is disposed within a cavity that positions magnet in close proximity to the flat support surface. A separate and distinct ferromagnetic adapter plate is adhered to a device to be supported, the adapter plate being structured for accommodation by the socket-like recessed support surface for removably retaining the device by magnetic attraction to the magnetic mounting platform.

A magnetic latching system selectively couples and releases an information handling system housing and lid by moving a magnet associated with one of the housing or lid relative to a ferrous metal in the other of the housing or lid to selectively apply magnetic attraction between the housing and lid. A latch retainer interfaced with the magnetic latching system retains the magnetic latch in a released position until the lid and housing approach a closed position and then allows the magnetic latch to return to a locked position, thus bringing the lid and housing to a securely closed configuration without slamming together due to the magnetic attraction between the magnet and ferrous metal.

Separation apparatus and method for separating magnetic and / or magnetically-labeled particles from a test medium.Test medium within a reaction chamber is caused to flow past a collecting surface, and a high-gradient magnetic field is applied to the surface to capture magnetically responsive particles in the test medium. The particles are deflected toward the collection surface by baffles, a spinner, or a sprayer, or are funneled past the surface by a plunger operable to be displaced into close proximity to the surface to provide a narrow flow path for the particle-laden test medium. The particles normally suspended in the medium are separated out of suspension by adhesion to the collection surface. The particles may be resuspended by removal of the surface from the high-gradient field, or removal of the high-gradient field from the surface. The collection surface is a thin-walled non-magnetic material having a plurality of magnetic pole faces positioned therearound.

The successful transfer of therapeutic agents such as genetic materials (e.g. nucleic acid) or drug into living cells is the most important issue depending on the development of the delivery carrier. A method for manufacturing superparamagnetic nanoparticles in medical therapeutics is described to develop nano-sized calcium phosphate (CaP) mineral was rendered magnetic as delivery vehicle. The CaP-based magnetized nanoparticles (NPs) were possessed superparamagnetic property by hetero-epitaxial growth of magnetite on the CaP crystallites and also showed no harm to the cultured cells and elicited no cytotoxicity. The magnetized CaP was demonstrated to have good plasmid DNA binding affinity or drug carrying capacity. It significantly increased the expression of gene transfection and efficiency in delivery to mesenchymal stem cells (MSCs) under exogenous magnetic field. According to the above facts, this newly-synthesized magnetized CaP NPs has great potential as a novel non-viral targeted delivery vehicle to be applied for medical applications.

A magnetic separation system configured to separate with high qualitative and quantitative yield magnetized cells from cell mixtures, comprising at least one electromagnet structured to generate a magnetic field flux about a plurality of separation zones and sufficient to attract a majority of the magnetized cells in the mixture, and a pump to drive the cell mixture at a controlled flow rate through a tube disposed within the zones thereby separating a majority of the magnetized cells from the mixture. The system is particularly useful to retrieve rare cells from a fluid mixture of cells having low abundance of the rare cells relative to the rest of the cells while sustaining viability of the cells.

The invention discloses a hybrid vortex rail braking system. In the technical scheme, lifting air cylinders are symmetrically arranged on both sides of a Y-shaped rotating pivot between a side frame of a truck frame and a magnetic system of a brake, an air braked handling system is respectively connected with the two lifting air cylinders, the piston rods of the two lifting air cylinders are connected with the magnetic system of the brake, the rod-free cavities of the two lifting air cylinders are connected with the side beam of the truck frame, and a wear plate on the bottom surface of the magnetic system of the brake is arranged to be opposite to a rail. The invention can control the power and the deceleration process through positive excitation of the exciting coil and regulation of the exciting current, thereby achieving the effect of actively controlling the deceleration. The magnetic attraction between the magnetic system of the brake and the rail can be reduced through reverse excitation of the exciting coil, thereby facilitating the lifting of the magnetic system of the brake. Simultaneously, the invention has the advantages of simple structure, energy conservation, high reliability, light weight and the like, and not only can be applied in high-speed railways, but also has broad application prospects in maglev trains, urban rail transits and other fields.

The invention relates to a solenoid actuator. Adapters (551, 552) are provided to end parts of permanent magnets (521, 522) positioned at the side where plungers (651, 652) are placed. The adapter (551) collects flux of the permanent magnets (521, 522) and the collected flux is conducted to the plungers (651, 652). The adapters (551, 552) each includes a main body part (560) configured to be plate-shaped and a base (570), the base protrudes from the main body part (560) towards the plungers (651, 652) in a stepped manner and is opposite to the plungers (651, 652) at a distance, and the distance can realize effective magnetic transmission between the base part (570) and the plungers (651, 652). The base (570) is symmetrical about a vertical line (y) vertical to a reference line (x). The reference line (x) is a straight line connected between a central axis (M) of the main body part (560) and a central axis (Q) of the base (570).

In an electromagnetic switch for auxiliary-rotation starter in the prior technology, it is required to reduce the ampere-turn amount without lowering the pullin coil resistance and it is required to increase the wire diameter of the coil so as to increase the number of turns and to implement opposite winding. There has been a problem that: the assembling performance and the operation are relativebad and the productivity is deteriorated due to increased conductor volume and the opposite winding structure. In an electromagnetic switch for an auxiliary-rotation starter according to the present invention, the magnetic bypass core is disposed at a place that is an air gap portion, in a magnetic circuit, through which the plunger moves due to magnetic attractive force produced by energizing the attraction coil and the holding coil and that is between the outer circumference of the plunger and the inner circumference of the bobbin, in such a way that one end thereof makes contact with one end of the case and the other end thereof faces the end of the core by the intermediary of an air gap.

A magnetic buckle comprises a buckle seat assembly and a lock catch assembly, wherein a first magnet is arranged in the buckle seat assembly, a lock hole corresponding to the first magnet is formed inone side of the buckle seat assembly, facing the lock catch assembly, the size of the lock hole is adjustable, a lock bolt capable of being inserted into the lock hole is arranged on one side of thelock catch assembly, facing the buckle seat assembly, a second magnet corresponding to the lock bolt is arranged in the lock catch assembly, pressing parts are respectively arranged on two opposite sides of the buckle seat assembly, an unlocking part linked by the pressing parts is arranged in the buckle seat assembly, and the unlocking part faces the lock hole; when the lock hole of the buckle seat assembly is close to the lock bolt of the lock catch assembly, the first magnet and the second magnet attract each other to guide the lock bolt in entering the lock hole so as to achieve locking; when the pressing parts are pressed oppositely, the unlocking part moves towards the combined parts of the lock bolt and the buckle seat assembly so as to space the combined parts of the lock bolt andthe buckle seat assembly and reduce the attraction force between the first magnet and the second magnet so as to facilitate the separation of the buckle seat assembly and the lock catch assembly.

The invention provides a handle component and a refrigerator. The handle component comprises a door body, a handle, a push rod and a transmission part; the door body comprises a mounting chamber; themounting chamber comprises a first opening and a second opening which are arranged back to back; the handle is fixed to one side, provided with the second opening, of the door body; the handle and thedoor body surround together to form a hand stretching position; the push rod is movably accommodated inside the mounting chamber; the transmission part is hinged to the door body; the first end of the transmission part is connected with the push rod; the second end of the transmission part is stressed to drive the first end of the transmission part to rotate by taking the hinging axis of the transmission part and the door body as the center so as to drive the first end of the push rod to move toward the direction which is close to or far away from the first opening; and the second end of thetransmission part is positioned inside the hand stretching position. The handle is fixedly connected with the door body, and the push rod is driven by the transmission part which is independent from the handle, so relatively small influences are caused on the transmission part and the push rod when a user acts on the door body through the handle; the transmission part and the push rod are not prone to being damaged; and the handle component is not prone to losing efficacy after being used for a long time.

A starter which may employed in starting an engine is provided. The starter includes an electromagnetic actuator and a pinion carrier. The pinion carrier includes a pinion and a holder. The holder retains a shift lever and transmits movement of the shift lever, as achieved by a magnetic attraction produced by the electromagnetic actuator, to the pinion, thereby shifting the pinion into engagement with a ring gear joined to, for example, an engine. The holder is made of material smaller in specific gravity than the pinion. Specifically, the holder is lower in mass or weight than the pinion, thereby permitting the magnetic attraction required to shift the pinion carrier through the shift lever to be decreased. This permits the electromagnetic actuator to be decreased in size.

The invention discloses a preparation method of a graphene reinforced copper-based composite material. The method comprises the following steps of preparing flaky copper powder, and carrying out nickel plating on graphene to obtain nickel-plated graphene; carrying out mixing and ball-milling on the flaky copper powder and the nickel-plated graphene to obtain mixed powder, and carrying out countercurrent rotation orientation on the mixed powder under a magnetic field to obtain a composite powder compact; and sintering the composite powder compact to obtain the graphene reinforced copper-based composite material. According to the method, the flaky copper powder is prepared in advance, and meanwhile, the graphene is subjected to nickel plating, so that the paramagnetic property of the graphene is increased; and the flaky copper powder and nickel-plated graphene mixed powder are subjected to countercurrent rotation orientation in the magnetic field, the graphene oriented reinforced copper-based composite material is prepared after hot-pressing sintering, so that the mechanical and physical properties of the material are improved.

A high-pressure armature set of a fluid solenoid valve features that a plunger has an extended portion or a balance seat that is received by a degaussing rod having an excitation element or by the armature tube, so as to balance pressure of a primary inlet at two ends of the plunger. The plunger has an axial through hole allowing fluid coming from an outlet end to reach a front end of the plunger so as to balance pressure of a secondary outlet at the two ends of the plunger. Thereby, the armature set is adaptive to a solenoid valve with larger fluid pressure without increasing the solenoid valve body in size. The extended portion of plunger or the balance seat enters the degaussing rod or the armature tube, so the attraction the degaussing rod acts on the plunger is increased and power consumption caused by coil excitation is reduced.

The embodiment of the invention provides a mask as well as a manufacturing method and an evaporation method thereof. The mask comprises a mask body and a magnetic isolation layer, wherein the mask body is made of a metal material capable of being adsorbed by magnet; a first surface of the mask body comprises a pore formation area provided with multiple pores, and a first groove is formed between the edge of the mask body and the pore formation area in the first surface; the magnetic isolation layer is made of a material that cannot be adsorbed by the magnet; the magnetic isolation layer is arranged between the edge of the mask body and the pore formation area, and at least one part of the magnetic isolation layer fills the first groove. According to the mask disclosed by the invention, thegroove is formed in the edge of the mask body, and the groove is filled with the magnetic isolation layer. Compared with the prior art, the mask disclosed by the invention has the advantages that magnetic adsorption force on the edge can be reduced, the fold in the middle pore area can be smoothly spread to the edge, and fold accumulation can be avoided. Therefore, the aim of avoiding the fold ofthe mask is achieved.

It is an object to provide a package for a magnetic circuit, with which a leakage magnetic field escaping from an aperture of a magnetic circuit is reduced and the magnetic attraction acting on the packaging plates is lowered, thus reducing the number of packaging work steps. There are provided a packaging plate for a permanent magnet-type magnetic circuit, the packaging plate comprising at least one non-magnetic layer and at least one magnetic layer; and a method for packaging a permanent magnet-type magnetic circuit, comprising a step of shielding at least a portion of an aperture of a permanent magnet-type magnetic circuit using at least one packaging plates.

The invention relates to the technical field of new energy, and discloses a pop-up charging gun for a new energy automobile. The charging gun comprises a charging gun shell, a charging port, a first charging wire, a charging head and a first sliding groove. By designing a thermistor, the first sliding groove, a second sliding groove and a first electromagnet, the charging gun still works after an automobile battery is fully charged, so that electric energy in the charging gun can only be dissipated in a heat form, the magnetic force of the first electromagnet is controlled to be reduced through temperature rise sensed by the thermistor, and therefore the magnetic attraction force to a magnetic block is reduced; a magnetic block and a buffer block are popped up to act on the end face of the charging port through the elastic potential energy of a pressure spring, and meanwhile, the popping of the magnetic block enables the magnetic repulsive force on a magnetic buckle to be reduced and the magnetic buckle to move away from a slot under the action of self gravity and a tension spring, so that the charging head is separated from the charging port under the action of the elastic potential energy of the pressure spring, the connection between the charging head and the charging port is cut off, and the damage to the automobile battery caused by charging the battery after the automobile battery is fully charged is avoided.

The present invention is related to a motor (60) for a washing machine, in which an insulator (116) structure is changed so as not to expose a coil (114) to an outside of the stator (110) for preventing accidents of electric shock caused by negligence of safety from occurring in advance, to enhance safety of the motor (60), and damage to the coil (114), and which enables to reduce magnetic attraction force and prevent interference between the stator (110) and the rotor (120) caused by the non-uniform gap between the stator (110) and the rotor (120). To achieve this, the present invention provides a motor (60) for a washing machine including a stator (110) including a substantially annular core (112) having a stack of steel pieces (1129), a coil (114) wound on the core (112) having an AC power applied thereto, and an insulator (116) mounted on an outside surface of the core (112), the insulator (116) having one edge extended to cover the coil (114), wherein a plurality of the coils (114) are wound along the circumference of the core (112), and connected in parallel.

A method of removing a magnetic tooling pin from a planar ferromagnetic support surface, comprises providing a pin-placement tool comprising an engagement body and an electrically conductive coil, supplying electrical power to the conductive coil to create a magnetic field which causes the magnetic attraction between the tooling pin and the support surface to be reduced, and moving the engagement body and engaged tooling pin away from the support surface.

The invention provides a panoramic monitoring spherical rotary table monitoring camera, and the camera comprises a mounting top plate, a protective shell, a detachable shell and a monitoring probe; a plurality of dust entering prevention assemblies capable of preventing dust from continuously entering are embedded in the inner wall of the bottom end of the protective shell in an up-down vertical direction in equal rows; each group of dust entering prevention assembly comprises an inner shell, a dust control assembly capable of controlling dust to enter and exit, an outer shell, a material control assembly capable of controlling dust suction materials to enter and exit, and a dust isolation assembly capable of isolating dust. According to the panoramic monitoring spherical rotary table monitoring camera, the dust prevention function of the protective shell can be improved, dust in the air is not prone to being blown into the detachable shell through a gap between the detachable shell and the protective shell even if the camera encounters haze or sand and dust weather, and the monitoring definition of the monitoring probe is guaranteed.

The invention relates to a building construction method, and in particular, discloses a preparation method of a prefabricated part. The prefabricated part is provided with an embedded connecting piece; and the preparation method comprises the steps of: (1) support arrangement of a mold; (2) pavement of an embedded reinforcement net frame; (3) fixed connection between the mold and the embedded connecting piece; (4) binding fixation between the embedded reinforcement net frame and the embedded connecting piece; (5) molding by pouring; and (6) demolding. In the actuation process, multiple parts of the embedded connecting piece are fixed to form multiple points and one surface; and when one end of the embedded connecting piece is connected with a template, the difficult dismounting of a fastening piece in the later period caused by floating, twisting and deviation of the embedded connecting piece in the concrete pouring or vibration molding process is generated, and the phenomenon of butt joint of the embedded connecting piece but difficult connection in the splicing process of the prefabricated part is generated. The preparation method can effectively improve the production quality of the prefabricated part and the construction efficiency in the assembly process of the prefabricated part.

The invention discloses an electromechanical equipment repairing mechanism for a mobile transformer substation. The electromechanical equipment repairing mechanism comprises a spliced base, a movable frame and a support frame, wherein the spliced base is a strip-shaped plate body formed by splicing a plurality of splice plates; a top surface of the spliced base is provided with a groove; a bottom iron plate is embedded into a bottom surface of the groove; the bottom iron plate is provided with a plurality of bumps; the movable frame is a regular quadrangular frustum pyramid-shaped frame body formed by integrally molding a bottom panel, four support columns and a top panel from bottom to top; the bottom panel is arranged in a sliding way along the length direction of the spliced base; the support frame comprises a vertical rod and a horizontal rod of which end parts are hinged together; a chock plug which is matched with the groove is fixedly arranged at a bottom end of the vertical rod; a top surface of the top panel is provided with a support; the support is provided with a through hole; and one end of the horizontal rod horizontally passes through the through hole. A length-adjustable spliced substrate on which the movable frame walks is formed by splicing the plurality of splice plates, and is suitable for narrow spaces of different transformer substations, so that a stable base is provided for the movable frame, and the movable frame can slide along a slide way to enlarge an operating platform for a worker to repair electromechanical equipment.

A magnetic buckle including a buckle base assembly and a locking assembly is disclosed. A first magnet and an adjustable lock hole are disposed on buckle base assembly, a lock tongue and a second magnet are disposed on locking assembly, two moving portions are disposed at the buckle base assembly respectively, and two unlocking portions are disposed within the buckle base assembly. When the lock hole is close to the lock tongue, the first magnet attracts the second magnet to guide the lock tongue into the lock hole to achieve locking. When the moving portions are pressed toward each other, the unlocking portions move toward the lock tongue to separate the parts of the lock tongue combined with the buckle base assembly for reducing an attractive force between the first magnet and the second magnet, so as to facilitate separation between the buckle base assembly and the locking assembly.

The invention discloses a periscopic meter reading type convenient electric meter box, belongs to the technical field of electric meter boxes, and can realize that a special periscopic meter reading tube is arranged, and based on the working principle of a periscope, a worker can complete the meter reading work of an uppermost row of electric meters without climbing, so convenience is improved, and the danger is reduced; the meter reading mirror body can provide an amplification effect based on the optical principle of a convex lens, so a worker can conveniently observe the degree, the meter reading work of the worker can be further facilitated, through combined arrangement of a driving and guiding iron block, a magnetic isolation sleeve, a self-positioning reading board and the like, the periscopic meter reading tube can be sequentially positioned and moved to the front of each electric meter under the action of magnetic attraction force between the driving and guiding iron block and the driving and guiding magnet, so the worker does not need to adjust the position of the periscopic meter reading tube with effort to move the periscopic meter reading tube to the front of each electric meter, working efficiency of the worker can be remarkably improved, and practicability is greatly improved.