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| Number | Title | Issue Date |
| 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 separately on upper surface and lower surface of the internal end, wh... | 05/22/2012 |
| 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 to the laminate core are arranged on eac... | 07/05/2011 |
| 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 portions exposed from both side faces of the iron core in a longitud... | 06/14/2011 |
| 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 force that varies in magnitude depending on the rela... | 06/07/2011 |
| 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 according to a pattern of row and columns extending para... | 05/24/2011 |
| 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 magnets mounted in the bracket at a plurality of sides. A movable unit, t... | 02/22/2011 |
| 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 (2) which comprises at least one motor mounting element (21 | 01/25/2011 |
| 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 force that varies in magnitude depending on the rela... | 01/11/2011 |
| 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 direction of sliders so that projecting poles are maintained at predetermin... | 11/23/2010 |
| 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 magnets, and the secondary part (1, 2) ha... | 11/16/2010 |
| 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 actuation. The stiffness or resistance to movement of the flexures is ... | 07/13/2010 |
| 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 the travel plate comprises at least two rails and is connected to a ... | 06/29/2010 |
| 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 linear or curved mobile motor using it. The linear or curved mobile moto... | 06/08/2010 |
| 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 surface. The lamination stacks are disposed adjacent the output shaft. A... | 06/01/2010 |
| 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 by a magnetic gap formed by cup-shaped yokes which are formed... | 05/25/2010 |
| 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 Stirling cycle machine including a cylinder 7, a piston 18 wh... | 04/06/2010 |
| 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 the height of the iron poles (522) towards the end... | 03/30/2010 |
| 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 connected to the support base and surrounded by the coil. A magnetization di... | 03/16/2010 |
| 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. An air gap defined between the outer yoke and the inner yoke. A voice... | 03/09/2010 |
| 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 linear motor includes magnet track having a horizontally arranged gener... | 02/09/2010 |
| 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) block installed in a main base; and a main cover installed elastically i... | 12/16/2008 |
| 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 actuated by the actuator. At the outer end of the each of the resonat... | 10/28/2008 |
| 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 and the rolling driving around the axis are performed by the single ... | 10/28/2008 |
| 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 and an electromagnetic coil unit 110 that include... | 10/21/2008 |
| 7432791 | Magnet arrangement for carrying, guiding and/or braking systems in magnetic levitation vehicles A magnet arrangement (1) for magnetic levitation vehicles is described that is comprised of an electromagnet having a plurality of magnet poles, said magnet poles having cores connected via pole backs (4) and coils (5) coiled onto them, said coi... | 10/07/2008 |
| 7414374 | 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 triggering the current pulse output produced by the timing circuitry; an arm... | 08/19/2008 |
| 7365456 | Positioning apparatus and charged-particle-beam exposure apparatus A positioning apparatus including a movable member for transmitting a driving force in a driving-axis direction to a stage, a first electromagnet for driving the movable member in the driving-axis direction by forming a magnetic path between the movable member and t... | 04/29/2008 |
| 7362003 | Coil switching circuit for linear electric generator In a linear electric generator (LEG) which includes apparatus for passing a permanent magnetic assembly (PMA) along linearly disposed sections of coils of an induction coil assembly (ICA) for generating voltages and power, a switching arrangement for coupling only s... | 04/22/2008 |
| 7362014 | Method and arrangement for operating a magnetically levitated vehicle The invention relates to a method and an arrangement for operating a magnetically levitated vehicle by means of an arrangement having at least one long-stator linear motor. The linear motors are sub-divided longitudinally of a track into individual motor regions (A | 04/22/2008 |
| 7361910 | Movable stage apparatus A movable stage apparatus includes a reticle stage on which a reflecting reticle is to be mounted, in which when a space is divided by a plane including a reflection surface of the reticle, a guide surface to guide movement of the master reticle stage is arranged in... | 04/22/2008 |
| 7352268 | High intensity radial field magnetic actuator At least one set of two magnets is provided, at least one of the magnets having an outer magnet portion, a middle magnet portion, and an inner magnet portion. The outer magnet portion has a magnetization pointing in an at least partially axial direction. The middle ... | 04/01/2008 |
| 7342343 | Stator and resolving method and device thereof The method for resolving the stator having a coil disposed in the slots provided around an inner circumferential face of a cylindrical iron core and having an opening portion includes a step of enlarging the opening portion of the slot, and a step of extracting the ... | 03/11/2008 |
| 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 magnet array and distribute on the entire surface of the thrust core... | 03/04/2008 |
| 7336006 | Magnetic actuator with reduced magnetic flux leakage and haptic sense presenting device A magnetic actuator, comprising a magnet, mutually opposite magnetic poles thereof being arranged opposing each other, and a coil, at least one portion thereof being inserted between the corresponding magnetic poles, wherein a driving force for the coil is generated... | 02/26/2008 |
| 7317266 | Anti-cogging method and apparatus for a linear motor The present invention provides a method for reducing cogging in a linear motor and for mounting sensors to determine motion of the motor. ... | 01/08/2008 |
| 7317997 | System and method for facilitating listening A system and method for assisting listening wherein an integrated circuit selects one or more audio sources from among a plurality audio sources to be presented to a signal processing circuit. Selection of the audio source can be automatically executed in response t... | 01/08/2008 |
| 7315011 | Magnetic heating device Magnetic heating device includes energy feeding elements, control unit and at least two magnetic field generators, where each magnetic field generator has two free ends. All free ends of the magnetic field generators define a plane and the control unit is adapted to... | 01/01/2008 |
| 7312540 | Linear motor armature and linear motor Connectors (25a), (25b), (25c), (25d), (25e), and (25f) for electrically connecting lead wires of armature windings (4) coiled around armature blocks (10), (11),... | 12/25/2007 |
| 7312954 | Suspension bearings for data storage drive A stacked suspension assembly for a data storage drive having, for example, at least two suspension members with each suspension member has a bearing hole therethrough. At least one spacer is positioned between the at least two suspension members to separate adjacen... | 12/25/2007 |
| 7309934 | Linear electric generator having an improved magnet and coil structure, and method of manufacturing Linear electric generators include stationary windings and armature magnets arranged to reciprocate axially relative to the windings, or stationary magnet structures and movable windings arranged to reciprocate relative to the stationary magnet structures. The armat... | 12/18/2007 |
