An electric permanent magnet chuck, comprising a casing (1), the casing being provided thereon with at least one open inner cavity; reversible magnetic material (2) is provided at a lower portion of the inner cavity, and a coil (3) is arranged in the inner cavity along an outer wall of the reversible magnetic material; a magnetic pole (4) is superposed and fixed in the inner cavity, an annular groove being provided at a lower surface of the magnetic pole, and permanent magnetic material (5) that matches the annular groove being disposed in the annular groove. The electric permanent magnet chuck has the advantages of a simple structure, low processing difficulty, good sealing performance, small magnetic loss and so on.

A non-conductive retrieval tool with a magnet connected a handle by a linkage assembly. The linkage assembly can be adjustable to maintain an orientation or position based on manipulation of a user, and can be made of a non-conductive material to safely operate in electrical applications. In some embodiments, the tool can include a socket portion near the magnet to apply torque to work pieces.

An adjustable holder assembly configured for temporarily positioning an object on a surface includes: a base assembly configured to be temporarily affixed to the surface; a support assembly configured to be slidably displaceable with respect to the base assembly and configured to support the object proximate the surface; and an angle defining assembly configured to adjust the angular position of the object with respect to the surface.

A support system for hanging of a cabinet door is provided having support arm and a main body with a top member and a front member. The upper end of the front member is operably connected to the forward end of the top member. The front member has lock features located at a plurality of positions between the upper end and the lower end on a front surface. The support arm has an elongated shape extending between a connection end and a support end. The support arm has lock features configured to engage and lock with lock features of the front member. The support end of the support arm having a platform configured to support the cabinet door during installation onto a cabinet. The support arm is movable between the plurality of positions to facilitate adjustment of a height at which the cabinet door is supported.

An apparatus for use with various shearing machines for safely and efficiently positioning material to be worked. Magnets which control the material are embedded in a body made of non-magnetic material. Magnets are positioned in the forward end of the apparatus for holding the material being worked while other magnets are positioned in the body of the apparatus for adhering the apparatus to the machine table. A handle is provided for sliding the material into the proper position.

A magnetic device for magnetically coupling to a ferromagnetic body, comprises a housing having a central bore. A plurality of pole sectors arranged within an envelope of the central bore and forming a workpiece contact interface of the magnetic device, each of the plurality of pole sectors comprising a plurality of spaced-apart pole portions arranged at respective distances, wherein a recess of a plurality of recesses separates each pole portion of the plurality of pole portions, wherein a first sector forms a first pole of the magnetic device and a second sector forms a second pole of the magnetic device. A first permanent magnet. A second permanent being moveable relative to the first permanent magnet. And, an actuator operatively coupled to the at least one second permanent magnet to move the at least one second permanent magnet relative to the at least one first permanent magnet.

A magnetic device for magnetically coupling to a ferromagnetic body, comprises a housing having a central bore. A plurality of pole sectors arranged within an envelope of the central bore and forming a workpiece contact interface of the magnetic device, each of the plurality of pole sectors comprising a plurality of spaced-apart pole portions arranged at respective distances, wherein a recess of a plurality of recesses separates each pole portion of the plurality of pole portions, wherein a first sector forms a first pole of the magnetic device and a second sector forms a second pole of the magnetic device. A first permanent magnet. A second permanent being moveable relative to the first permanent magnet. And, an actuator operatively coupled to the at least one second permanent magnet to move the at least one second permanent magnet relative to the at least one first permanent magnet.

Support blocks for printed circuit boards (PCB's) and printed circuit board assemblies (PCBA's), wherein the support blocks are produced from a 3D printing process. The support block including a bottom surface having a vacuum connection; a top surface having at least one vacuum hole; at least one recessed surface that is offset from the top surface; and at least one vacuum channel extending from the vacuum connection to the at least one vacuum hole.

An assembly-disassembly tool is adapted for assembling and disassembling a lamp board. The assembly-disassembly tool includes a magnetic conductive member and a sliding module. The magnetic conductive member includes a through hole. When the disassembly tool is positioned on the lamp board, the through hole of the magnetic conductive member is aligned with an iron sheet of the light board. The sliding module including a magnet is slidably disposed above the magnetic conductive member along a direction parallel to a top surface of the magnetic conductive member. When the sliding module is located at a first position relative to the magnetic conductive member, the magnet is staggered with the through hole. When the sliding module slides to a second position relative to the magnetic conductive member, the magnet is aligned with the through hole and is configured to magnetically attract the iron sheet of the lamp board.

A magnetic device for magnetically coupling to a ferromagnetic body, comprises a housing having a central bore. A plurality of pole sectors arranged within an envelope of the central bore and forming a workpiece contact interface of the magnetic device, each of the plurality of pole sectors comprising a plurality of spaced-apart pole portions arranged at respective distances, wherein a recess of a plurality of recesses separates each pole portion of the plurality of pole portions, wherein a first sector forms a first pole of the magnetic device and a second sector forms a second pole of the magnetic device. A first permanent magnet. A second permanent being moveable relative to the first permanent magnet. And, an actuator operatively coupled to the at least one second permanent magnet to move the at least one second permanent magnet relative to the at least one first permanent magnet.