Provided is a method for manufacturing a high-density integrally-molded induct comprising the following steps: (1) winding an enameled wire coil to be spiral; (2) mechanically pressing first ferromagnetic powder into a magnetic core; (3) mounting the magnetic core into a. hollow cavity of the enameled wire coil; (4) mounting the enameled wire coil provided with the magnetic core into an injection mold; (5) uniformly mixing and stirring resin glue, a coupling agent and an accelerant, to obtain high-temperature resin glue; (6) uniformly stirring second ferromagnetic powder and the high-temperature resin glue, to obtain a magnetic composite material; (7) injecting the magnetic composite material into a mold cavity of the injection mold for molding, and solidifying the magnetic composite material to obtain an outer magnet; and (8) cooling and de-molding the outer magnet, to obtain a molded inductor. The inductor obtained using the above method is small in size, high in density, high in relative permeability, better in heat dissipation, and lone in service life. The inductor is simply manufactured using an integral molding method, thus reducing the production cost.

A magnet structure comprising a plurality of individual magnets in the form of an elongate block (4) having a length (4a) extending beyond the thickness of the magnet structure. The elongate block (4) is cylindrical or polyhedral in shape with at least one flat longitudinal face (4b) orientated towards a working surface of the magnet structure, the elongate block (4) having a line of magnetisation extending along its length. The individual magnets (4) being positioned at a distance from each other in the magnet structure in order to be electrically isolated from each other, the length (4a) of each block (4) being greater than the diameter of the flat longitudinal face (4b) for a cylindrical block (4) or with a larger diagonal (4c) connecting two apexes of said longitudinal face (4b) for a block (4) in the form of a polyhedron.

A magnetic rod guide for a filter is provided that includes a base for attachment to part of a filter, a through aperture through which a magnetic rod can move, and resilient engagement means. The resilient engagement means includes one or more resilient latches for holding the magnetic rod in one or more fixed positions relative to the guide. Each resilient latch is adapted to allow movement of the magnetic rod through the through aperture in either direction, for insertion into the filter or withdrawal from the filter into one of the fixed positions.

A magnetic attraction-fixing assembly and a rotating support structure for a portable device are provided. The magnetic attraction-fixing assembly includes two magnetic units, the two magnetic units stacked with and attracting each other; wherein each of the magnetic units respectively comprises a circular magnetic component and at least one annular magnetic component around the circular magnetic component, a magnetic pole of the circular plane of the circular magnetic component is an unlike pole to a magnetic pole of an annular plane of the annular magnetic component that is adjacent to the circular magnetic component. The rotating support structure comprises two magnetic units and a body. Magnetic attractions in both radial and axial directions are enhanced.

A periodic arrangement of magnets are used to form structures that channel the potential energy that a magnet possesses into kinetic energy in a controlled fashion to perform some useful work or function. One function is to create a magnetic chute that converts the potential energy of a magnetic projectile into kinetic energy that is used to channel the projectile to follow a path achieving high velocities along a path. The path is formed by assembling magnets periodically along the path in a certain fashion to create a magnetic chute that allows the magnetic projectile to slide easily along the path since the projectile is confined by the shape of the magnetic chute.

Embodiments of the invention provide devices, systems, and methods that precisely identify a minimum of one predetermined spot which is hidden under a skin. The system comprises a locator device and corresponding implanted target device. The port locator device preferably comprises one magnet with north and south magnetic pole, a body and a suspending component. The body may utilize specific geometry which improves accuracy. The implanted target device may include at least one magnet and at least one target or a plurality of targets and at least one magnet. Various configurations can be provided that precisely identify a single spot or a plurality of spots which are hidden under a skin.

An inflator cap comprising: an outer cover; an anti-corrosion lining formed in or inside the outer cover; and a magnetic member formed on, in or inside the outer cover, whereby the magnetic member of the inflator cap, once unscrewed from the inflator, will be magnetically attractable on a ferromagnetic object to prevent its loss; or whereby the anti-corrosion lining will preclude a direct contact between the outer cover of the inflator cap and a valve stem of the inflator to prevent from sticking of the oxide of the outer cover once oxidized on the valve stem of the inflator, thereby smoothly unscrewing the cap from the inflator.

This invention is directed to a corrosion resistant permanent magnet, to a method for producing a corrosion resistant permanent magnet, and to an intravascular blood pump comprising the magnet. The magnet is corrosion resistant due to a composite coating comprising a metal layer, optionally a metal oxide layer, a layer formed from poly(2-chloro-p-xylylene), and a linker layer between the metal oxide layer and the poly(2-chloro-p-xylylene) layer.

A removable fluid barrier comprises a generally planar flexible body fabricated of at least one resilient material and encapsulating a plurality of permanent magnets. The flexible body has an outer face defining a sealing surface of the removable fluid barrier.

A steel magnet body assembly comprises a first magnetizer (1) and a second magnetizer (2) that are magnetically conductive, and comprises multiple steel magnets (3). A magnetically insulative fixing member (4) used for fixing the steel magnets (3) is disposed between the first magnetizer (1) and the second magnetizer (2). The first magnetizer (1), the fixing member (4) and the second magnetizer (2) are sequentially stacked. The multiple steel magnets (3) are fixed in the fixing member (4) in an evenly spaced manner. Each steel magnet (3) is a column having an N magnetic pole and an S magnetic pole, and the N magnetic pole and the S magnetic pole of the steel magnets (3) are relatively disposed on two sides of a plane where the central axis of the column of the steel magnet (3) is located.