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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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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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7400069 |
Generator having reciprocating and rotating permanent motor magnets
A generator for producing electric power includes a drive mechanism, such as a drive motor, having a rotor supported for rotation about an axis. A first generator magnet driveable by the rotor...
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7397161 |
Outer core assembly structure of linear motor
Disclosed herein is an outer core assembly structure of a linear motor. At least one of a plurality of core sheets is an extended core sheet having a length greater than that of the other core...
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7394173 |
Direct drive controller with haptic feedback
A reliable and cost-efficient direct drive force feedback motor is suitable for joystick applications, allowing multiple degrees of output freedom, requiring no coil commutation, and permitting...
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7385317 |
Linear motor not requiring yoke
A linear motor not requiring a yoke structure is provided. A first unit forming a stator is constructed of two permanent magnet rods. The permanent magnet rods each have a magnetically permeable...
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7385319 |
Motor fixing structure of reciprocating compressor
Disclosed is a motor fixing structure of a reciprocating compressor comprising: a front frame having a predetermined shape; a middle frame positioned with a certain interval from the front frame;...
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7382106 |
Method to operate a motor having reciprocating and rotating permanent magnets
A method to operate a motor having a rotor supported for rotation about an axis, at least one pair of rotor magnets spaced angularly about the axis and supported on the rotor, at least one...
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7381033 |
Reciprocating compressor
A reciprocating compressor includes a front frame; a middle frame positioned with an interval from the front frame; an outer stator having a winding coil and coupled between the front frame and the...
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7378764 |
Positioning apparatus, exposure apparatus using thereof and device manufacturing method
A positioning apparatus including a movable member having a plurality of magnets, and a plurality of coils arranged in X- and Y-axial directions, for displacing the movable member in the X- and...
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7368838 |
High efficiency voice coil motor
Methods and apparatus for increasing the efficiency of a voice coil motor (VCM) are disclosed. According to one aspect of the present invention, a cylindrical and radially symmetric VCM includes a...
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7352088 |
Linear electrodynamic system and method
An exemplary description provided for patent searches includes a linear electrodynamic system for conversion of mechanical motion into electrical power or conversion of electrical power into...
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7348692 |
Linear compressor
A linear compressor comprises an external casing forming a compressing chamber, an outer core disposed in the external casing, an inner core assembly disposed inside of the outer core interacting...
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7339290 |
Linear motor
There is provided a linear motor in which the number of armature windings can be reduced, and an armature iron core can be readily fixed to a member for supporting the armature iron core. Each of...
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7339857 |
Vibrating device provided with mechanical shock protection means for a portable object
The vibrating device ( 1 ) is mounted in a portable object, such as a wristwatch, to act in particular as a silent alarm. The device includes a moving mass ( 3 a , 3 b , 6, 15 ) formed in part by a...
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7339289 |
Synchronous permanent magnet planar motor
According to the invention, configurations of X-windings and Y-windings in a synchronous permanent planar motor are improved, X-windings and Y-windings overlap in the direction normal to the planar...
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7332836 |
Guide bar drive in a knitting machine
Guide bar drive in a knitting machine and method of driving guide bar. The drive includes a linear motor composed of a stator and a rotor, in which the linear motor is greater in height than width....
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7328474 |
Electric toothbrush with linear oscillator
An electric toothbrush includes a drive part, a driver, a brush part and a vibration-absorber. The drive part includes a drive shaft provided to be lineally movable and a brush part detachably...
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7327054 |
Linear actuator comprising velocity sensor
A linear actuator for a motion system is provided with a velocity sensor for monitoring a velocity of an actuation arm that it is driving. The linear actuator comprises a magnetic field, a first...
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7323800 |
Outer stator for reciprocating motor and manufacturing method thereof
An outer stator of a reciprocating compressor comprises: a bobbin formed as a ring shape and provided with a winding coil therein; an outer stator frame coupled to an outer circumferential surface...
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7322199 |
Stirling cooler
Disclosed is a Stirling cooler, in which a partition contacting a front surface of an inner stator is formed on a cylinder and a second stopper serving as a snap ring contacting a rear surface of...
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7321175 |
Low cost precision linear actuator and control system
Embodiments of the present invention relate to a linear actuator in which the play and backlash in the linear motion of a stepper motor is reduced through the use of a torsion spring coupled to the...
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7315098 |
Linear oscillator and electrically driven toothbrush
A linear oscillator and an electric toothbrush capable of emitting a low noise and of being assembled compact are provided. The linear oscillator, which reciprocates a shaft in an axial direction...
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7309932 |
Voice coil motor apparatus for positioning
A voice coil motor apparatus for positioning is disclosed. The voice coil motor is used by the auto-focus lens control module of a miniature camera. The apparatus contains a voice coil motor, a...
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7304407 |
Linear oscillating actuator
A linear oscillating actuator gives a smooth reciprocatory movement with a minimum of incidental vibrations or stresses. The actuator includes an oscillator carrying a permanent magnet as well as...
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7298101 |
Continuously variable frequency swinging armature motor and drive
Disclosed herein is a power device. The power device has a power source; timing circuitry powered by the power source for producing a current pulse output having a pulse width; a switch for...
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7294941 |
Winding coil assembly of reciprocating motor and manufacturing method thereof
A winding coil assembly ( 6 ) of a reciprocating motor comprising: an outer stator; an inner stator ( 2 ) arranged at an inner circumference surface of the outer stator ( 2 ) with a certain air...
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7291943 |
Linear generator with a swinging piston
An electromechanical energy converter for a gaseous or vaporous medium comprising a stator ( 1 ) with two pot-shaped stator members ( 1 a , 1 b ), each open at one end face and adjoining each other...
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7288860 |
Magnetic transducer with ferrofluid end bearings
An electrical generator includes one or more magnets that move relative to one or more conductors to generate an electrical signal in each conductor. Each magnet has ferrofluid bearings in the...
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7288862 |
Reciprocating motor
A reciprocating motor includes a pair of stators and a cylindrical magnet formed as a single body and disposed between the stators, for linearly reciprocating. Accordingly, it allows facilitating a...
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7288861 |
Inertial actuator with multiple flexure stacks
An inertial actuator for active vibration control utilizes a single cylindrical actuator module of the “voice coil” type. A moving armature assembly, including a soft iron shell with a tubular...
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7285878 |
Linear motor controller
A sensorless method of detecting piston collisions in a reciprocating free piston linear compressor driven by an electronically commutated linear motor having at least one excitation winding is...
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7285883 |
Drive system for linear and rotary movements
A drive system includes a rotary drive unit for rotating a shaft and a linear drive unit for moving the shaft in a linear direction. To improve efficiency and shelf life, an energy storage is...
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7279814 |
Moving coil actuator for reciprocating motion with controlled force distribution
A moving coil actuator that moves in a rapid back-and-forth motion is constructed with a magnet assembly that concentrates the magnetic flux in a region of limited length and with a coiled electric...
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7279813 |
Z-θ table activated by two rotary motors
A Z-θ table includes a bed capable of undergoing linear displacement along the Z-axis and angular positioning. The table includes two rotary motors arranged in a substantially concentric manner...
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7276821 |
Moving magnet type linear slider
In some embodiments, a moving magnet type linear slider capable of minimizing the effect of microvibration at the time of driving a linear motor, easily increasing the servo gain and suppressing...
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7276822 |
Power engine
A power engine includes magnetic piston, electromagnetic winding, crankshaft, flywheel and voltage divider; the magnetic piston being adapted to a holder; a magnet being fixed to the piston; the...
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7274120 |
Drive unit and image pickup unit equipped with the drive unit
A drive unit for performing precise linear movement of a driven object comprises a motor having a cylindrical stator and a cylindrical rotor that is coaxially put in the cylindrical stator and...
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7256519 |
Linear actuator and pump device and compressor device therewith
A linear actuator includes a driving part having an inner yoke, an outer yoke and a coil for generating an alternating magnetic field and includes a movable body provided with a magnet disposed...
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7250697 |
Linear generator apparatus
A linear generator apparatus includes first and second elongate coaxial bodies that are axially movable relative to one another with a reciprocating movement. The first body is axially and freely...
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7245049 |
Vibrator and method for manufacturing the same
A vibrator of the present invention comprises a coreless coil ( 2 ), a driver ( 4 ) including a magnet ( 4 a ) inserted in the coreless coil ( 2 ), a yoke ( 4 b ) for pinching the coreless coil ( 2...
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7245048 |
Tactile panel
A tactile panel includes a vibration panel, a yoke provided to face the vibration panel, drive coils secured on a circumference of the vibration panel, and a set of permanent magnets arranged...
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7245042 |
Auxiliary wind energy generation from a wind power generation apparatus
A wind energy generator has a generator having a shaft extending therefrom, a plurality of blades interconnected to the shaft so as to be rotatable by the action of wind energy, and an elongate...
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7242118 |
Toroidal-coil linear stepping motor, toroidal-coil linear reciprocating motor, cylinder compressor and cylinder pump using these motors
A toroidal-coil multi-phase linear stepping motor includes a cylindrical housing, an axis coaxially arranged inside the housing, a cylindrical element supported by the axis and an armature fixed to...
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7239052 |
Magnetic actuators
A magnetic actuator. A yoke includes a first opening and a second opening, a frame, and a path. A first magnet is disposed in the first opening in the vicinity of the frame. A second magnet is...
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7233449 |
Lens moving mechanism and imaging apparatus
A lens moving mechanism which includes a moving lens for zooming or focusing; a lens holder holding the moving lens in a lens-barrel, and being supported freely movably into an optical axis...
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