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Systems and methods for magnetic shielding

Patent Number: 8441330
Publication Date: 2013-05-14
Inventor:

Systems and methods for magnetic shielding are described. A magnetic shield formed of a material having a high magnetic permeability may be degaussed using a toroidal degaussing coil. The toroidal degaussing coil may enclose at least a portion of the shield. Magnetic field gradients may be actively compensated using multiple magnetic field sensors and local compensation coils. Trapped fluxons may be removed by an application of Lorentz force wherein an electrical current is passed through a ...

Method of magnetizing magnetic encoder and magnetizing apparatus

Patent Number: 8436705
Publication Date: 2013-05-07
Inventors: ; ;

A magnetic encoder magnetizing method, in which magnetization of the plural neighboring tracks of the magnetic encoder can be accurately performed, is provided. While an annular magnetic body having a plurality of annular, unmagnetized magnetic encoder tracks integral therewith and juxtaposed relative to each other is rotated, the tracks of the magnetic encoder are individually magnetized by a magnetizing head, made up of a magnetizing yoke and an exciting coil, to thereby provide the ...

Protected powder metal stator core and solenoid actuator using same

Patent Number: 8436704
Publication Date: 2013-05-07
Inventors: ; ;

A solenoid actuator includes a stator assembly with a stator core of formed powder metal received in a stator housing. A ferromagnetic protective sleeve is in contact with and covers a majority of an inner end face and a cylindrical wall of the stator core, while a flux ring is in contact with and covers an outer end face of the stator core. An armature assembly includes an armature attached to a stem that is movable in an air gap relative to the ferromagnetic protective sleeve. A spring is ...

Method for winding coil on object and water pump of clutch type provided with the same

Patent Number: 8436703
Publication Date: 2013-05-07
Inventor:

A method for winding a coil on an object, wherein the coil includes a plurality of first coils and a plurality of second coils, may have winding the first coils on an exterior circumferences of the second coils, wherein an outer circumferences of the respective second coil is enclosed and in contact with outer circumference of at least three first coils, and wherein cross-sectional area of the second coil is smaller than that of the first coil, and wherein the outer circumference of the at ...

Electromagnetic contactor unit

Patent Number: 8436702
Publication Date: 2013-05-07
Inventor:

There is provided an electromagnetic contactor unit capable of firmly connecting electromagnetic contactors without influencing outer dimensions when the electromagnetic contactors are connected to each other. The electromagnetic contactor unit connected at least two juxtaposed electromagnetic contactors (2a, 2b) with a connection piece (42). The electromagnetic contactor includes an attachment hole (41a) formed in each corner of an ...

Integrated electromechanical relays

Patent Number: 8436701
Publication Date: 2013-05-07
Inventors: ; ;

Electromechanical relays and semiconductor structures and microelectromechanical systems including at least part of an electromechanical relay are presented. For example, an electromechanical relay includes an electrically conductive terminal within a printed circuit board, one or more electrically conductive contacts, and one or more magnetic actuators. The one or more magnetic actuators are respectively associated with the one or more electrically conductive contacts and each magnetic ...

MEMS-based switching

Patent Number: 8436700
Publication Date: 2013-05-07
Inventors: ;

A MEMS-based switching device may be used to implement an interconnect switch in a programmable integrated circuit device. Such a MEMS-based device may include a deformable cantilever that may form a closed or open circuit to thereby implement switching ...

Soft latch bidirectional quiet solenoid

Patent Number: 8432242
Publication Date: 2013-04-30
Inventor:

Embodiments of soft latching solenoids comprise a coil assembly (24); a plunger assembly (26); at least one flux conductor (28) comprising a flux circuit. The coil assembly (24) is fixedly situated with respect to a solenoid frame (21). The plunger assembly (26) is configured to linearly translate in a first direction along a plunger axis (32) upon application of a pulse of power to the coil assembly (24). The flux conductor(s) ...

Contact arrangement having a bent cord, relay having a contact arrangement and method for assembling a relay

Patent Number: 8432241
Publication Date: 2013-04-30
Inventors: ; ;

The present invention relates to a contact arrangement for a relay for switching high load currents. Furthermore, the invention relates to a relay for switching high load currents having a contact arrangement. Finally, the invention relates to a method for assembling a relay. In order to be able to assemble the contact arrangement in the relay in an at least partially automated manner, without additional retention devices being required for a cord, there is provision according to ...

Miniature magnetic switch structures

Patent Number: 8432240
Publication Date: 2013-04-30
Inventors: ; ; ;

According to an illustrative embodiment, a switching device structure is provided comprising a cavity defined by a laminated structure; and a moveable member comprising a plurality of laminated layers, wherein the moveable member is suspended from a side surface of the cavity by a hinge comprising a plurality of adjacent electrical conductors. In one embodiment, a current conducting coil is formed within the moveable member, and first and second of the adjacent electrical conductors of the ...

Micro-electro mechanical tunneling switch

Patent Number: 8432239
Publication Date: 2013-04-30
Inventors: ; ;

A micro-electromechanical system switch includes a substrate and a plurality of actuating electrodes formed the substrate wherein each actuating electrode is activatable. A cantilever beam has a first end and a second end and a plurality of stops formed thereon. The plurality of stops engages the substrate between the plurality of actuating electrode. A contact area is formed in the substrate and located to engage the second end of the cantilever beam. A voltage source applies a voltage to ...

Three axis linear actuator

Patent Number: 8432072
Publication Date: 2013-04-30
Inventor:

A mover (344) moving a stage (238) along a first axis, along a second axis and along a third axis includes a magnetic component (354), a conductor component (356), and a control system (324). The magnetic component (354) includes a plurality of magnets (354D) that are surrounded by a magnetic field. The conductor component (356) is positioned near the magnetic component (354) in the magnetic field. Further, the conductor ...

Article made of an injected material with a built-in magnet and the manufacturing method

Patent Number: 8427264
Publication Date: 2013-04-23
Inventor:

An article for use in various industries including for manufacturing toys, promotional articles, and decorative articles using plastic includes a body (1), a built-in magnet (3) and a receptacle (2) with side arms (21) embedded in the body (1). The receptacle (2) has a base (23), an opening (25) for introducing the magnet (3), and a closure lid (4) for closing the opening ...

Proportional magnet for a hydraulic directional control valve and method for the production thereof

Patent Number: 8427263
Publication Date: 2013-04-23
Inventor:

A proportional magnet for a hydraulic directional control valve and a method for the production thereof. The proportional magnet has a coil unit, a bearing unit and a pole disk. The coil unit has a cylindrical coil, a cylindrical magnet casing surrounding the coil, an annular yoke disc arranged at a face of the magnet casing and a housing. The bearing unit has a yoke with a first bearing point, a pole core with a second bearing point, and an armature unit with a magnet armature and a ...

Electromagnetic contactor with abrasion preventing means

Patent Number: 8427262
Publication Date: 2013-04-23
Inventor:

An electromagnetic contactor is provided an electromagnetic contactor including an upper frame having a fixed contact point and a guide rail; a cross bar comprising a sliding portion engaged with the guide rail, a movable contact point contacting and separating with respect to the fixed contact point while sliding along the guide rail, and a movable core; and a lower frame comprising a fixed core disposed adjacent to the movable core, an excitation coil magnetizing the fixed core by an ...

Dual bipolar magnetic field for rotary high-voltage contactor in automotive lithium-ion battery systems

Patent Number: 8427261
Publication Date: 2013-04-23
Inventors: ;

A device and method for operating automotive battery system relays and related switches. By aligning a magnetic field with a direction of current flow in a contact plate disposed between magnets that are producing the field, a generated Lorentz force can be used to promote arc extinguishing during a relay opening sequence, while simultaneously reducing the tendency of the Lorentz forces to interfere with the operation of a solenoid or other switch-activating mechanisms. By using a ...