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7619498 |
Vibrator
A vibrator has a cup-shaped casing, a substrate provided to close an upper end opening of the casing, a magnetic circuit assembly provided in the casing, a first suspension and a second suspension...
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7604520 |
Electrical linear motor for marine propulsion
An electrical linear motor for propelling a marine vessel comprises a thruster assembly disposed within a guide tube. Permanent magnets are attached to the thruster assembly and placed in close...
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7598697 |
Electric motor and a method therefor
A motor and a method for serves finding the position of an armature in relation to a stator of the motor. In the method and the motor the armature is driven by an exciting field which is produced...
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7595571 |
High performance linear motor and magnet assembly therefor
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other...
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7586220 |
Electromechanical generator for converting mechanical vibrational energy into electrical energy
An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising a housing, an electrically conductive coil assembly...
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7579793 |
System and method for efficient wide dynamic range coil drive
Methods and systems are provided for driving one or more force coils. A system for driving force coils is provided including a PWM drive coupled to a first coil and a linear drive coupled to a...
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7579722 |
Torque harnessing electric engine
An electric engine having four drive mechanisms, four piston coil systems that fire ninety degrees (90°) apart and cause a previously fired piston coil system to return to its original position...
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7579720 |
Origin microadjustment mechanism for a linear motor
An origin microadjustment mechanism for a linear motor is assembled on a stator of the linear motor and comprises a load bearing member fixed to a sensing member and two positioning seats. The load...
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7576462 |
Electromagnetic exciter
An electromagnetic exciter includes a casing having a cylindrical side wall with first and second end openings. A suspension supports a magnetic circuit assembly vibratably in the cylindrical side...
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7576456 |
Linear actuator
In a linear actuator ( 1 ), on the inside of a rectangular tubular movable element ( 3 ), a linear guide ( 14 ) that supports the movable element ( 3 ) so as to be linearly movable is positioned at...
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7573162 |
Linear motor
A linear motor having a more preferable braking function is realized with a low cost. A linear motor has a slider and a stator. A driving winding is wound around the slider. A plurality of...
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7569952 |
High efficiency, inductive vibration energy harvester
An inductive energy harvester comprises a permanent magnet magnetic field source attached by a pair of compact spiral disk springs to an induction coil. The springs position the magnet so that the...
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7557470 |
6-axis electromagnetically-actuated meso-scale nanopositioner
A MEMS actuator includes a coil stack in the form of microfabricated, electrically conductive first and second superposed layers. A magnet array is superposed in magnetic communication with the...
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7554225 |
Electric motor with a coil arrangement for providing oscillatory linear and rotational movement
An electric motor for a small-scale electrical appliance, such as a toothbrush or shaver. The electric motor includes at least one oscillatory motor component, a magnet arrangement having at least...
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7554224 |
Electromechanical generator for converting mechanical vibrational energy into electrical energy
An electromechanical generator comprising an electromechanical device for converting mechanical vibrational energy into electrical energy, the electromechanical device comprising a housing, an...
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7550880 |
Folded spring flexure suspension for linearly actuated devices
A family of flexure suspension systems for reciprocating linear motors, especially voice coil type, wherein basic flexure span elements, each a flat spring or typically a stack thereof, are...
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7541699 |
Magnet assembly, linear actuator, planar motor and lithographic apparatus
This invention relates to a magnet assembly that includes a ferromagnetic member extending in a first direction, an array of magnetized poles of opposite polarity arranged adjacent to each other in...
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7538463 |
Vibrator
A vibrator includes a voice coil and a vibrating member supported by first and second suspensions so as to be vibratory in the axial direction of the coil. Each of the first and second suspensions...
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7518268 |
Linear stage including an integrated actuator and associated methods
According to one example a linear translation stage is provided. The linear stage includes a first portion (e.g., a base portion) and a second portion (e.g., a stage portion) configured for...
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7501723 |
Driving device
A driving device easy to manufacture. A slider formed of a soft magnetic material has spiral threads running along an axial direction of the slider. A stator formed of a soft magnetic material...
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7498682 |
Electrical energy generator
An electrical energy generator that converts kinetic energy harvested from voluntary motor activity of a human or animal to electrical energy. The electrical energy generator includes a housing, a...
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7495358 |
Vibratory linear actuator and electric toothbrush using the same
A vibratory linear actuator according to one embodiment of the present invention is comprised of a stator having a through hole therein and a winding wire therearound, a movable member having a...
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7492066 |
Machining apparatus
A sliding member having an attached tool reciprocates along a guide member. Permanent magnets are placed at both ends of the reciprocating motion path of the sliding member and permanent magnets...
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7489055 |
Linear motor and linear compressor using the same
Disclosed herein is a linear motor in which a plurality of coil groups are connected in series or in parallel and driving power is applied to part or all of the coil groups according to load...
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7485991 |
Ventilation apparatus
A ventilation apparatus includes a stator, a vibrator arranged close to the stator, a permanent magnet to generate a magnet flux to form a path of the magnet flux along the stator and the vibrator,...
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7479715 |
Omnidirectional electrical generators
Electrical generators are provided by causing permanent magnets to travel through hollow passageways having electrical conductors flanking or surrounding the space within the passageways. The...
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7476990 |
Linear actuator
An object of the present invention is to provide a linear actuator in which reliability is improved, and performance is also easily improved. The present invention provides a linear actuator...
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7476989 |
Dynamic magnet apparatus for generating electrical power
A dynamic magnet apparatus for generating electrical power adapted to connect with a rectifier and accumulator, including a hollow elongated carrier having two opposite ends, a pair of fixed...
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7474026 |
Electromagnetic drive device
A moving core includes a magnetic body having a rough face-shaped wall portion at a side facing a stationary core, a plated layer portion provided on the magnetic body and including a micro concave...
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7474018 |
Reciprocation type linear driving actuator and power toothbrush using the same
In a reciprocal linear driving actuator used as a drive source of a power toothbrush, two permanent magnets are formed substantially disc shape or substantially tubular shape, and fitted to and...
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7471019 |
High speed assembly actuator
Apparatus and associated systems or methods include a linear machine with an elongate, axially-slidable core member (i.e., shaft). In one embodiment, the shaft includes at least one radial aperture...
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7471018 |
Linear motor and manufacturing method of linear motor
A linear motor comprise a pipe shaped member, and a stator stored in the pipe shaped member, the stator including plural magnets arranged in series so that adjacent poles of the plural magnets...
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7462959 |
Linear motor and stage device using the linear motor
A linear motor can include a coil part having a plurality of coils forming a coil line; a magnet yoke part having a plurality of permanent magnets facing the coil line; and a coil cooling part...
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7459811 |
Reciprocating motor
A reciprocating motor including a piston operatively connected with a magnet unit, a cylinder having an open end to receive the piston and having a groove formed at a circumference along an outer...
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7459810 |
Stator of linear motor
Disclosed herein is a stator of a linear motor having a plurality of outer core blocks. Each of the outer core blocks comprises first and second side core blocks and a center core block. The center...
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7459809 |
X-Y stage driver having locking device and data storage system having the X-Y stage driver
An X-Y stage driver having a locking device and a data storage system having the X-Y stage driver. The X-Y stage driver includes an X-Y stage; a supporting unit that supports the X-Y stage and has...
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7459808 |
Lithographic apparatus and motor
A motor includes a magnet assembly to generate a magnetic field. The field includes along the first direction parts which are alternately orientated in the first and the second direction. The parts...
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7456528 |
High performance linear motor and magnet assembly therefor
A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other...
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7449804 |
Stator of reciprocating motor
A stator of a reciprocating motor includes a ring-shaped bobbin including a winding coil 400 therein; a plurality of unit laminated assemblies each constructed of a plurality of lamination sheets...
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7446752 |
Controlling haptic sensations for vibrotactile feedback interface devices
Controlling haptic sensations from a vibrotactile feedback device connected to a computer. The vibrotactile device includes an actuator having a rotatable mass, and receives information, which...
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7446440 |
Permanent magnet flux module reciprocating engine and method
A permanent magnet reciprocating engine and method are provided wherein a first field plate having magnetic fields of two polarities interact with the magnetic field of a magnet located on a piston...
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7443060 |
Acoustic compressor with two resonators
A resonator of an acoustic compressor is provided at each side of an actuator so that the two resonators are arranged side by side. Two pistons are provided at the inner ends of the resonators and...
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7440689 |
Electromagnetically actuated adjusting apparatus for lens
An electromagnetically actuated adjusting apparatus for lens is disclosed. The adjusting apparatus comprises a body capable of furnishing a lens inside, at least one permanent magnet, a first...
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7439641 |
Resonance drive actuator
A resonance drive actuator includes a casing; an electromagnetic drive section supported in the interior of the casing; a plunger to be reciprocatively driven at least in a rotational direction or...
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7439640 |
Electromagnetic actuator using permanent magnets
An actuator mechanism having a different magnet polarity arrangement than the conventional mechanisms is provided. The actuator mechanism 100 has a magnet unit 210 that includes magnets 30 ...
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7436089 |
Reciprocating motor
A reciprocating motor comprising an outer stator ( 110 ) having a cylindrical shape by radially stacking a plurality of lamination sheets ( 112 ) at the outside of a bobbin ( 160 ) in which a...
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7429839 |
Linear compressor and control method thereof
A linear compressor having a reciprocating piston, a linear motor driving the piston, and a motor controller to vary magnitude of a stroke of the piston according to power, including: a...
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7429812 |
Drive unit
A drive unit for the movement of an active element with respect to a passive element, wherein the active element includes a resonator and at least one excitation device for exciting oscillations of...
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7420300 |
Voice coil motor
A voice coil motor of the movable coil type comprising a stator including a permanent magnet. The stator produces a magnetic field. A movable element made of an armature coil is provided. The...
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7402922 |
Acoustic wave generating apparatus and method
A tactile wave generating apparatus and method to generate amplified low frequency waves which are then transmitted as tactile waves into a structure and/or to a persons anatomy. There is a housing...
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