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7605680 |
Electromagnetic actuator
A highly efficient electromagnetic actuator which can reduce leakage of the magnetic flux is provided. The electromagnetic actuator comprises a first coil 31 , a movable body 2 adapted to move...
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7592890 |
Magnetic-path member, electromagnetic coupling device using magnetic-path member, and method of manufacturing magnetic-path member
A magnetic-path member includes first and second magnetic portions positioned on inner and outer peripheral sides of the magnetic-path member respectively. The magnetic-path member includes a...
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7581302 |
Solenoid valve combining a core and cartridge in a single piece
A magnetic gap in a solenoid core is formed by a non-magnetic brazing material bonded into a groove encircling the core in the region of the magnetic gap. A bore through a single piece core and...
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7557684 |
Electromagnetic switch with fixed magnetic core having disc portion formed of stack of base and balance metal sheets
According to the invention, an electromagnetic switch includes a pair of fixed contacts, a movable magnetic core, a magnetic coil, and a fixed magnetic core. The movable magnetic core is configured...
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7535328 |
Electromagnetic switch
In an electromagnet switch, a stationary iron core is composed mainly of a base part and a disk part. The base part is faced to a plunger and the disk part is forcedly inserted and fixed to a boss...
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7520488 |
Poppet-type two-port solenoid valve
A two-port solenoid valve, which opens and closes a valve seat by operating a tabular valve member by using electromagnetic force and fluid pressure, capable of improving the responsiveness when...
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7504920 |
Magnetic brake assembly
A powdered metal electromagnetic is provided that has much less variance between units, increased frictional drag, reduced wear of itself and the brake drum disk during use and an increased...
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7481242 |
Solenoid-operated directional control valve
Directional control valve, in particular a hydraulic 3/2-way directional control valve, having an actuating unit ( 1 ) and a valve unit ( 2 ), which is operatively connected to the actuating unit...
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7468647 |
Linear solenoid having stator core and plunger
A solenoid includes a stator core, a plunger, a ring core, and a magnetic circuit component. The stator core has a fixed axial end and a free axial end. The free axial end is unfixed. The stator...
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7441746 |
Solenoid device and injection valve having the same
An injection valve includes a housing that movably accommodates a needle. A movable core is axially movable together with the needle in the housing. A stationary core is fixed in the housing for...
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7423506 |
Annular magnet
An annular magnet is formed by coupling a plurality of arc-shaped divided magnets with each other in an annular shape as well as such being magnetized with N and S magnetic poles on the end...
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7375606 |
Electromagnetic contractor for controlling an electric starter
The metal housing of the case of a contactor includes an annular rib extending continuously opposite the cylindrical periphery of the main stationary core, the rib having an internal diameter...
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7350763 |
Linear solenoid with adjustable magnetic force
A linear solenoid includes a pole tube; a housing jacket that encloses the pole tube; a coil that encompasses the pole tube; and a displaceable armature that is received in the pole tube. An...
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7315230 |
Adjustable solenoid
Embodiments of the present invention provide solenoid plungers, solenoid actuators, and solenoid-actuated mechanisms, that provide for an adjustable stroke, adjustable rated force, and adjustable...
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7280021 |
Linear solenoid designed to ensure required amount of magnetic attraction and solenoid valve using same
A linear solenoid is provided which works to pull a plunger to a stator magnetically. The plunger and the stator are aligned to have ends opposed to each other. The end of the stator has formed...
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7266883 |
Methods for the production of a pressure pipe of an electric hoisting magnet and pressure pipe of a hoisting magnet
The invention discloses methods for the production of pressure pipes of a tractive solenoid for a hydraulic valve and pressure pipes that are manufactured using these methods, wherein the pressure...
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7249749 |
Solenoid valve with 2-part fixed core
A solenoid valve capable of handling a corrosive control fluid and developing an increased attraction force. The solenoid valve 1 is adapted such that a fixed core is located in a wound coil 29 ...
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7243680 |
Electromagnetic hydraulic valve, in particular a 3/2-way directional control valve, for controlling a variable drive train of an internal combustion engine
The invention relates to a hydraulic valve ( 1 ), which comprises an electromagnet ( 2 ) with a magnet armature ( 3 ) as well as the valve part ( 4 ) with at least two valve seats ( 5, 6 ). The...
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7227440 |
Electromagnetic actuator
An electromagnetic actuator comprises an driven member and magnetostrictive elements which change the dimensions thereof when activated or deactivated by selectively applying magnetic flux therein....
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7209020 |
Variable force solenoid
A variable force solenoid is described, wherein the solenoid has a relatively long stroke and a relatively low profile. The solenoid includes an armature with at least one tapered surface and a...
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7095304 |
Solenoid air valve
According to a solenoid air valve, a flange portion of a moving core and a flange portion area of a bobbin implement a stop area defining a distance of travel of the moving core in a direction away...
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7091808 |
Solenoid
A solenoid that has a small body and increased propulsion in a controlled range is provided. The solenoid is characterized by being provided with a bearing 40 formed of a nonmagnetic body, n...
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7059453 |
Electromagnetic brake
An electromagnetic brake interposed between a fixed housing and a rotating member. The electromagnetic brake includes a multiplate brake mechanism, a ringlike core member fixed through an annular...
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7049917 |
Solenoid air valve
A moving core of a solenoid air valve has a flange portion arranged on a side of a fixed core, provided in a radially projecting manner and having a first diameter, and a shaft portion having a...
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7044438 |
Electromagnetic actuator with non-symmetrical magnetic circuit layout for actuating a gas-reversing valve
An electromagnetic actuator for actuating a gas-reversing valve on a piston internal combustion engine includes two electromagnets. Each electromagnet includes a one yoke body presenting a pole...
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7028978 |
Proportional solenoid-controlled fluid valve having compact pressure-balancing armature-poppet assembly
A proportional solenoid-driven valve control assembly comprised of a moveable, magnetic armature adjacent to a fixed magnetic pole piece, providing fluid leakage containment, and having no...
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6980072 |
Linear actuator, and pump and compressor devices using the actuator
A linear actuator has inner yokes, outer yokes forming gaps between themselves and the inner yokes, and a movable body provided with planar magnets in the gaps. Eight pieces each of the inner yokes...
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6959732 |
Hard coating on a stator for improving the durability of a solenoid actuator
At least one solenoid actuator and a valve are at least partially positioned within a body of an hydraulic device. The solenoid actuator includes at least one solenoid coil mounted to a stator that...
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6956454 |
Magnetic subassembly of an electrical breaker apparatus
Magnetic subassembly for electrical breaker apparatus, comprising a magnetic yoke ( 10 ), a fixed core ( 39 ) and a moveable core ( 30 ) sliding along an axis (X) inside an insulating sheath ( 20 )...
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6929242 |
High force solenoid and solenoid-driven actuator
A solenoid having increased axial force and low static friction on the armature is disclosed and provides an improved solenoid-driven hydraulic valve actuator. The solenoid includes a coil member,...
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6922124 |
Electromagnetic drive device
An electromagnetic drive device for lineally reciprocatilvely moving an operating member like a spool of a spool valve is reduced in the manufacturing cost without being degraded in its operational...
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6856222 |
Biarmature solenoid
A solenoid includes first and second armatures disposed on either side of a solenoid core. The core includes first and second sets of legs disposed on opposite sides of a central member. A drive...
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6853276 |
Electromagnetic formed contact surface
An electromagnetically actuable device includes a base. A magnetic core is fixedly mounted to the base. An armature is movably mounted to the base proximate the magnetic core. A coil is fixedly...
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6800983 |
Magnetic circuit structure, and power-generating device and electronic device using the same
Opposing concave structures formed in an end portion 22 b of a stator yoke 22 and an end portion 23 b of a magnetic core 23 are mated in a staggered manner and are joined. An upper...
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6768406 |
Electromagnetic device for valve control
The apparatus for controlling valves that move linearly along respective axes comprises a number of actuators that is equal to the number of valves. Each actuator has an armature ( 22 ) of...
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6763789 |
Electromagnetic actuator with permanent magnet
A system and method for increasing force density of a valve actuator particularly suited for use in actuation of intake and/or exhaust valves of an internal combustion engine include at least one...
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6759934 |
Proportionally-controllable solenoid actuator
A proportionally-controllable solenoid including primary and secondary pole pieces that surround an armature axially movable along an axial channel within the pole pieces. The pole pieces are...
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6737946 |
Solenoid for efficient pull-in and quick landing
A solenoid with improved pull-in and landing characteristics. As a solenoid armature closes toward contact with the pole faces of a yoke, a geometric redistribution of a constant total flux causes...
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6731191 |
DC electromagnet
A DC electromagnet system used in an electrical switchgear, for example in a contactor having a driving coil, includes a fixed, C-shaped magnet yoke and a movable, rod-shaped armature. The yoke has...
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6731043 |
One-piece field core shell
A spin-roll formed one-piece field core shell formed from a blank disc of sheet metal. The one-piece field core has an outer annular ring integral to and encircling a center axis of the disc and...
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6674353 |
Magnet system for a relay
The magnet system is part of a relay, which displays particularly low-noise switching. Components of the magnet system include a core unit ( 1 ), an armature ( 6 ) and a not represented coil,...
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6642825 |
Iron core and electromagnetic driving mechanism employing the same
An iron core comprising an outer yoke, side poles disposed on both end portions of the outer yoke, and a center pole disposed between the side poles, wherein a magnetic path of polar portions of...
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6628186 |
Solenoid valve
A proportional activation magnet ( 1 ) for a hydraulic solenoid valve has a pole ( 3 ) with a valve cone receiving bore ( 17 ) for receiving a valve cone ( 20 ) and a pole tube ( 14 ) for receiving...
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6611186 |
Solenoid having an elastomeric retaining device and method of manufacturing same without potting
A electrical solenoid suitable for fluid controls applications with an elastomeric retaining device of an elastomeric material arranged between the housing and the lamination stack. The elastomeric...
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6601822 |
Electromagnetic driving device, fluid control valve having same and method of manufacturing same
In a magnetic driving device, a fixed core has a housing portion, in which a plunger is housed to reciprocatingly move, and an attracting portion toward which the plunger is attracted upon...
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6591202 |
Magnetic field measuring device
An apparatus and method that tests an NMR system, including MRI scanners, by taking H-B measurements for the apparatus at any stage during the manufacture thereof, to thereby detect any defects of...
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6556113 |
Electromagnetic adjusting device
An electromagnetic adjusting device for automatic transmissions of motor vehicles has an electromagnet having a magnetic coil, a substantially cup-shaped housing which surrounds the magnetic coil...
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6512436 |
Electromagnetic actuator
An electromagnetic actuator has a core combined with a coil, and a movable member disposed so as to be attractable to an end face of the core, the movable member having an abutting surface for...
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6496092 |
Electromagnetic drive
An electromagnetic drive device is proposed comprising an electromagnet ( 21 ) having a magnetizable core ( 22 ) with a plurality of limbs ( 23 and 24 ) and an energizable winding arrangement (...
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6486762 |
Magnetic switch for starter motor
In a magnetic switch for a starter motor, a magnetic core member providing a magnetic flux path is composed of separate components: a first core, a cylindrical yoke and a second core, all contained...
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