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8183720 |
Magnetic circuit system
A magnetic circuit system includes a T-shaped yoke, a magnet, and a top plate. The top plate has a center hole, an internal end around the center hole thereof, and two projecting elements provided...
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8177529 |
Reciprocating compressor
In a compressor, a motor includes a stator and a moving member that reciprocates. A frame supports the stator and a conductivity member flows at least a portion of magnetic flux flowing away from...
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8093767 |
Linear-resonant vibration module
Various embodiments of the present invention comprise linear-resonant vibration modules that can be incorporated in a wide variety of appliances, devices, and systems to provide vibrational forces....
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7973436 |
Electric linear motor
In the field of electrical linear motors, it is known to make more than one laminate core (20) having teeth (22), wherein grooves (24) are designed between the teeth (22). Until now, coils assigned...
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7960874 |
Cooling device of linear motor
A cooling device of a linear motor to cool a primary side of the linear motor including an iron core and a coil accommodated in slots of the iron core, including an elongate cover covering coil end...
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7956498 |
Acceleration generator and pseudo force sense generator
An acceleration generator 20 includes: a moving member (21, 25) that performs a periodic translational motion along a particular straight line; a first operating part (24) that applies a first...
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7948198 |
Reaction force cancel system
Increasing in size of a reaction force cancel system is suppressed. The reaction force cancel system is provided in a stage device including: a surface plate having a plurality of plate surfaces...
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7948122 |
Displacement device
Especially for use in the semiconductor industry, a displacement device (701) is disclosed comprising a first part comprising a carrier (714) on which a system of magnets (710) is arranged...
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7924127 |
Electro-magnetic force driving actuator and circuit breaker using the same
An electromagnetic force driving actuator and a circuit breaker using the same is disclosed. The actuator comprises a casing that forms two paths having a certain length in longitudinal direction,...
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7893568 |
Voice coil motor type focusing actuator
A voice coil motor type focusing actuator, which includes a fixed unit, the fixed unit comprises a bracket which is formed by plastic injection molding to wrap a metal part, and a plurality of...
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7876001 |
Direct-drive built-in motor with special sensor attachment
The aim of the invention is to simplify and to secure the mounting and adjusting of sensors on built-in motors. As a result, a direct drive built-in motor is equipped with a first motor component...
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7868489 |
Acceleration generator and pseudo force sense generator
An acceleration generator 20 includes: a moving member (21, 25) that performs a periodic translational motion along a particular straight line; a first operating part (24) that applies a first...
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7839029 |
Linear motor
In a linear motor, the stators and sliders are arranged to fill a predetermined relationship. In one configuration, two stators each include a plurality of stator blocks arranged in a moving...
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7834489 |
Synchronous linear motor
The invention relates to a synchronous linear motor comprising a mobile primary part (3) and a fixed secondary part (1, 2). The primary part (3) comprises conductive coils (4) and permanent...
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7823654 |
Electric post driver
An impact driver for driving elongate objects into a body has, a chassis, a ram supported by the chassis in a manner allowing rectilinear movement of the ram relative to the chassis between two...
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7812482 |
Rod-type linear motor
By reviewing a material of a forcer housing and an assembly structure of a coil member with respect to the forcer housing, a thrust force is increased, an optimum shape can be easily given to the...
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7786685 |
Linear motor and method for operating a linear motor
A linear motor includes a primary part arranged as a guideway stator and at least one secondary part that is movable with respect to the primary part, the at least one secondary part having...
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7782559 |
Camera module
A camera module includes a lens unit, a magnet, a stator and an elastic element. The stator includes an upper coil seat with an upper coil wound therearound and a lower coil seat with a lower coil...
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7757376 |
Method for manufacturing of a magnetic circuit
A magnetic circuit is made by magnetically attracting a permanent magnet segment of a partially circular arc in cross section to an outer peripheral surface of a center rod, causing the magnet...
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7755225 |
Recoilless voice coil actuator and method
A recoilless voice coil actuator and method having flexures connected to both the magnet and the voice coil allowing independent movement of both the magnet and the voice coil in the direction of...
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7745963 |
Linear motor with integrated guidance
A linear motor with an integrated guidance comprising a base plate comprising at least two side walls, and a travel plate guideably connected to the base plate in a linearly movable manner, wherein...
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7732950 |
Linear or curved mobile motor and its radiator
A radiator for a linear or curved mobile motor for removing the thermal distortion of a mover and a transporting member of a linear or curved mobile motor, and a high-accuracy, high-reliability...
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7728463 |
Reluctance laminations for a motor assembly
A system and method for a multiple degrees of freedom motor includes an output shaft. A stator is provided having at least a first lamination stack. Each lamination stack has an interior curved...
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7728705 |
Electromagnetic transmission device
An electromagnetic transmission device. A guide bar connects to a fixed base and includes magnetic-permeable material and a first central height plane. A coil connects to the fixed base. A support...
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7723873 |
Vibration actuator
A vibration actuator having a simple small-sized structure capable of obtaining vibration enough to sense without use of suspension or the like is provided. Amplitude of a moving part is restrained...
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7696651 |
Linear motor
A linear motor comprising a mover part including; an armature module having an I shaped magnetic iron core and an armature winding of one kind wound on the periphery of the I shaped magnetic iron...
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7692339 |
Stirling cycle engine
To provide a less expensive and high-efficient free-piston Stirling cycle machine with an outer diameter of entire machine being relatively small. In a Stirling cycle cooler as a free-piston...
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7687942 |
Iron core linear motor having low detent force with high power density
In a linear motor (1), the detent force is reduced by the height of the iron poles (522) being selected differently in the two outer regions of the coil set, preferably by a gradual reduction of...
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7679225 |
Voice coil motors and pre-compression generation devices thereof
A voice coil motor. At least one guide bar is connected to a fixed base. A coil is connected to the fixed base. A support base is movably fit on the guide bar. An annular magnetic member is...
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7675202 |
Isotropic ring magnet linear voice coil motor
A linear voice coil motor having a radially magnetized magnet structure. The voice coil motor includes an outer yoke an inner yoke magnetically coupled with and extending inside of the outer yoke....
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7663269 |
High bandwidth linear actuator for steering mirror applications
A printed circuit board (PCB) coil linear actuator is disclosed. The actuator includes a coil assembly and a magnet assembly. The coil assembly includes a plurality of PCB coils electrically...
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7663275 |
Linear compressor controller
A sensorless method and apparatus for detecting piston collisions in a free piston linear compressor motor. The waveform of the back EMF induced in the motor stator windings is analysed for slope...
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7659641 |
Moving magnet type linear slider
In some embodiments, a moving magnet type linear slider capable of eliminating a magnet suction force caused by a linear motor to minimize the linear guide friction is provided. The field of the...
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7602086 |
Driving device, exposure apparatus using the same, and device manufacturing method
A driving device includes an electromagnetic actuator indicating a first coil and a second coil which detects a change in magnetic flux generated by the first coil, and an electromagnetic actuator...
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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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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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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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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 a...
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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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7554277 |
Circuit device for increasing the useable motor voltage in a long stator drive and method for operating a magnetically levitated vehicle provided with said type of circuit device
A circuit device is disclosed which is used to increase useable motor voltage in a long stator drive. Further, suitable methods for operating a magnetically levitated vehicle provided with the...
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7537091 |
Magnetic elevator door mover
An elevator door mover device (40) includes a threaded ferromagnetic shaft (42). Magnetic movers (48) associated with doors (26) generate magnetic fields that cause the doors to move responsive to...
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7528561 |
Linear drive apparatus
A linear drive apparatus comprising: a guide having an internal body; a slider moved along the guide, a driving mechanism for generating a driving force by magnetic interaction of the slider with...
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7528527 |
Driving device
A driving device includes a drive source, a driving unit, and a driven member. The drive source is configured and arranged to generate a driving force. The driving unit is coupled to the drive...
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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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7504751 |
Small electric appliance with a drive mechanism for generating an oscillatory motion
A small electric appliance with a drive mechanism for generating an oscillatory motion of at least one working unit of the small electric appliance. The drive mechanism has a first drive component,...
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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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7466043 |
Linear motor guide apparatus
The present invention relates to a linear motor guide apparatus, which comprises a linear motor stator and rotor; an up-projecting partitions, an LM (linear motor) rail and an LM (linear motor)...
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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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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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7443058 |
Actuator capable of reciprocal linear driving and rolling driving and power toothbrush using the same
A reciprocal linear driving unit and a rolling driving unit are adjacently provided on a common single shaft in axial direction thereof, so that the reciprocal linear driving in the axial direction...
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