A method and apparatus for operating a debris removal tool. In one embodiment, the tool includes a cover assembly having a plurality of covers spaced from one another along the length of the assembly creating a gap between adjacent covers. A carrier disposed within the cover assembly is axial movable relative thereto and has a plurality of magnet groups spaced from one another along its length. In an unactuated position of the tool, each of the plurality of magnet groups is under one of the plurality of covers and in an actuated position, each of the plurality of magnets is in a gap between covers.

A rotor for rotary electrical machine. The rotor providing a shaft and magnets supported by the shaft. The rotor further provides a protecting sleeve, extending around an outer surface of the magnets and being made at least partially of PEEK or epoxy resin.

Disclosed is a hull device designed to be reversibly attached to an outer surface of a ferromagnetic structure of a marine or submarine system or vessel. The device includes at least one attachment surface suitable for attaching the device to the structure, and a plurality of permanent magnets arranged in the vicinity of the attachment surface in order to attach the device to the structure.

A propulsion system, comprising: a fan blade housing; a plurality of fan blades within the fan blade housing; one or more rows of permanent magnets, affixed to the outside of the fan blade housing; one or more fan blade bearings; one or more magnetic field generators affixed to the one or more fan blade bearings and corresponding to the one or more rows of permanent magnets, the magnetic field generators configured to cause the permanent magnets to be propelled forward in the same direction, thereby causing the fan blade housing to which they are attached, and the fan blades within, to spin.

An apparatus for assembling a repelling magnet combination, comprising a first and second magnet, a first and second holding magnet, a first holding base with a first holding base first end, and a second holding base with a second holding base first end. The first and second holding magnets are positioned at the first and second holding base first ends, and the first and second magnets are magnetically attached to the first and second holding magnets respectively, with outward faces exhibiting like magnetic polarities. The first and second magnets are brought into contact by moving the first and second holding base first ends into close proximity, whereby the first and second holding magnets exert holding forces on the first and second magnets which overcome a repelling force generated therebetween, allowing a repelling force countering means, such as an adhesive, to bond the magnets together into a repelling magnet combination.

A pipeline demagnetization device based on a permanent magnet structure includes a central piece and permanent magnets distributed on the central piece. A magnetic field with alternating directions is formed in a wall of a pipeline in an axial direction from front to back, and strength of the magnetic field gradually decreases. The pipeline demagnetization device can be applied to the pipeline demagnetization using a built-in structure or an externally-built structure. The pipeline demagnetization device spatially constructs a set of stable alternately-decayed magnetic fields, so that the wall of the pipeline experiences the set of alternately-decayed magnetic fields when the pipeline that is magnetized spatially displaces relative to the set of alternately-decayed magnetic fields, thereby realizing demagnetization.

The invention discloses a manufacturing method of magnet unit for wireless charging, including the steps: installing multiple magnetic elements onto a first carrier made of non-magnetic material; moving the first carrier into a magnetizing machine to magnetize all the magnetic elements so that each magnetic element becomes a magnet piece, an N-pole and an S-pole are formed on different portions of the same surface of the magnet piece; installing the magnet pieces onto a second carrier made of magnetically permeable material to form a magnet unit, the magnet pieces are defined in an annular array around the central axis of the second carrier installed on a wireless charging base, the magnet unit cooperates with a charging coil of the wireless charging base to charge a wireless headset. The invention simplifies the manufacturing process and ensures the consistency of magnet pieces in the same magnet unit, also improves the manufacturing efficiency.

A construction magnetic panel is provided having a flexible base formed with front and internal sides and including magnetic particles placed within the body of the panel. The magnetic particles are operated within a working temperature range between −60 and +120° C., whereby the magnetic particles are characterized by the maximum energy product (BH).sub.max within the range between 2,0 and 100,00 kJ/m.sup.3 and are capable of magnetic interaction with external magnetically susceptible materials.

In mobile robot that runs from first flat surface which is a magnetic body to second flat surface which is a magnetic body and intersects the first flat surface, the mobile robot includes a pair of driving wheels which is rotatably supported to robot body and includes permanent magnets on outer circumferential surfaces thereof; driving mechanism which drives the pair of driving wheels to be independently rotated; rear wheel which is rotatably supported to the robot body and includes permanent magnets on an outer circumferential surface thereof; distance sensor which acquires a distance to the second flat surface; and pressing out mechanisms which include pressing out members which are movable between contact position at which the pressing out member can be in contact with the first flat surface and retracted position at which the pressing out member is retracted from the first flat surface. The pressing out member is moved from the retracted position to the contact position to be in contact with the first flat surface by the pressing out mechanism, the driving wheels is separated from the first flat surface, and the driving wheels move from the first flat surface to the second flat surface, when the distance sensor detects that the driving wheels are in contact with the second flat surface.

The present invention relates to a magnet device. The device is primarily comprised of a wire mesh, a magnet, and a telescoping arm. The wire mesh is comprised of at least one opening that allows a user to remove the wire mesh from the magnet when it is time to dispose of the collected metal items. In addition, the magnet is comprised of at least one magnetic base, at least one magnetic support, and at least one magnetic topper so that a user can easily pick up small to medium-sized metallic items without causing strain or injury to their back or other muscles. Further, the telescoping arm which allows the device to be used at a plurality of distances.