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| Number | Title | Issue Date |
| 7939974 | Movable magnet type linear motor with heat-dissipating assembly A movable magnet type linear motor with a mover heat-dissipating assembly includes a mover having a housing receiving therein a coil seat for holding a coil, openings being formed at two opposite ends of the housing, end covers being attached to the openings and hav... | 05/10/2011 |
| 7768156 | Coil support unit, motor and exposure apparatus using the same, and device manufacturing method A motor apparatus includes a plurality of coils arranged along a first direction in a plane perpendicular to central axes thereof, a plurality of magnets each generating a force in cooperation with the coils, and a support member supporting the plurality of coils. M... | 08/03/2010 |
| 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 to provide fluid (e.g., air) communication from an interior volume o... | 12/30/2008 |
| 7414336 | Dual flow circulation system for a mover A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of th... | 08/19/2008 |
| 7408276 | Plane motor device with surrounding member surrounding coil unit and with cooling channel provided within surrounding member A plane motor device that includes a stator unit, a movable unit movable along a plane above the stator unit, first and second coil units at one or both of the movable unit and the stator unit, in which coil units a current flows for driving the coil unit, and an en... | 08/05/2008 |
| 7391496 | Exposure apparatus An exposure apparatus which exposes a substrate to a pattern. The apparatus includes a channel which causes pure water to flow as a coolant, a temperature adjustment unit which adjusts a temperature of the coolant flowing in the channel, and a UV sterilization unit ... | 06/24/2008 |
| 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 shaft and a permanent magnet row having a plurality of permanent magnet... | 06/10/2008 |
| 7368837 | Drive guide device The present invention provides a drive guide apparatus capable of ensuring an increased lifetime by preventing heat generated from a primary side of a linear motor from being transferred to a rail or a moving member of a guide mechanism to which the primary side of ... | 05/06/2008 |
| 7355308 | Mover combination with two circulation flows A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of th... | 04/08/2008 |
| 7345384 | Linear motor armature and linear motor In a linear motor, a can has a two-layer structure including an inner can 2 and an outer can 3, and an inner passage 7 formed between an armature winding 9 and the inner can 2 and an outer passage 8 formed between the inner ... | 03/18/2008 |
| 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. The stator has a length in a longitudinal direction and includes at ... | 02/19/2008 |
| 7330094 | Energy producing apparatus utilizing magnetic pistons An energy producing apparatus utilizing magnetic pistons is provided. Permanent magnets of like polarity are employed within a cylinder of each piston and upon a top portion of said piston. The like polarity pistons have a natural desire to repel one another. A ferr... | 02/12/2008 |
| 7329972 | Coil support unit, motor and exposure apparatus using the same, and device manufacturing method An apparatus including a coil used for generating a thrust to move a movable portion, and a coil support portion which supports the coil. The coil support portion constrains the coil in a direction of the thrust, and slidably supports the coil in a direction perpend... | 02/12/2008 |
| 7309931 | Electric motor with cooling coil The invention relates to a motor part of a linear motor, i.e. the primary part or secondary part of an asynchronous or synchronous linear motor. According to the invention, it is proposed to configure a cooling coil (K), which has a meandering flat structure, from p... | 12/18/2007 |
| 7301602 | Stage apparatus and exposure apparatus A moving element to be propelled across a stator includes a coil unit, including coils, for generating a force to propel the moving unit, and a cooling unit for cooling the coil unit. A thermal conductive member, arranged between the cooling unit and the coil unit, ... | 11/27/2007 |
| 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 chamber cooperative with the shaft such that the chamber rotates relativ... | 07/17/2007 |
| 7166978 | Motor temperature sensor system and method to determine motor performance An electric motor system includes an electric motor, a temperature sensor mounted therein capable of measuring a local temperature and generating a temperature related signal, and a processor configured to calculate an actual temperature of a rotor magnet from the t... | 01/23/2007 |
| 7075197 | Aligning apparatus, exposure apparatus, and device manufacturing method An aligning apparatus includes a moving member, a magnetic member arranged vertically above the moving member, a stator unit which is arranged vertically below the moving member and has a plurality of coreless coils, a first magnet unit which is provided to the movi... | 07/11/2006 |
| 7057703 | Exposure apparatus An exposure apparatus which exposes a substrate to a pattern. The apparatus includes a channel which causes pure water to flow as a coolant, a temperature adjustment unit which adjusts a temperature of the pure water flowing in the channel, and a coolant generation ... | 06/06/2006 |
| 6956308 | Dual flow circulation system for a mover A circulation system (330) for a mover (328) includes a fluid source (360) that directs a first fluid (356) into a first inlet (364A) of the mover (328) and a second fluid (358) into a second inlet (366A) of th... | 10/18/2005 |
| 6955539 | Characterization of motion of dual motor oral hygiene device An oral hygiene device is disclosed having at least two motors to simultaneously vibrate and impart motion upon the head portion of the oral hygiene device, most beneficially at the tip. A first motor is positioned in the handle portion of the device to impart a fir... | 10/18/2005 |
| 6917126 | Sliding means with built-in moving-magnet linear motor A sliding means with built-in moving-magnet linear motor is provided, realizing high-speed operation and much response ability of a table to a stationary bed, and also accurate position control of the table to the bed. With the sliding means of this invention, armat... | 07/12/2005 |
| 6847132 | Electromagnetic actuator having an armature coil surrounded by heat-conducting anisotropy material and exposure apparatus An electromagnetic actuator has a permanent magnet and an armature coil that performs relative movement with respect to the permanent magnet. A material having heat conduction anisotropy surrounds a surface of the armature coil and a heat radiating member radiates h... | 01/25/2005 |
| 6825583 | Linear motor including cooling system Disclosed is an iron core type linear motor, and more particularly an iron core type linear motor with an improved cooling system for an easy manufacture thereof while having a high cooling efficiency. The iron core type linear motor includes a moving part including... | 11/30/2004 |
| 6822352 | Cooling of stator by corrugated hose in an electric machine A cooled stator for an electric machine including a rotating rotor wherein the stator comprises an electric sheet metal stack and one or more flexible, deformable cooling channels for guiding the flowing cooling medium in a liquid or gas form, reacting with the stac... | 11/23/2004 |
| 6717295 | Cooling apparatus for linear motor The present invention discloses a cooling apparatus for a linear motor comprising: a ‘U’ shaped stator back iron; a stator having a plurality of permanent magnets installed on inner facing surfaces of the stator back iron; a coil unit positioned between the stat... | 04/06/2004 |
| 6665414 | Speaker system and cooling device therefor A speaker system and a cooling device therefor is provided which is capable of effectively dissipating heat generated by a voice coil. The cooling device is formed as a unitary member having a first member having a hollow cylindrical shape which is integr... | 12/16/2003 |
| 6657327 | Linear direct current motor A linear direct current motor comprises a center yoke (1) ending in the longitudinal direction X, an outer yoke (31) arranged parallel to the center yoke, a peat magnet (41) for generating magnetic field between the outer yoke and the center yoke, and a c... | 12/02/2003 |
| 6552450 | Reciprocating engine A reciprocating engine has at least one cylinder forming an inner chamber, at least one piston reciprocatingly movable in the inner chamber of the at least one cylinder, a unit for converting a reciprocating movement of the piston to move an outside objec... | 04/22/2003 |
| 6528907 | Linear motor A linear motor capable of effectively cooling heat generated when the linear motor is driven is provided where the motor includes a moving element having the lower portion with a plurality of field magnets. The motor includes a stator element having an up... | 03/04/2003 |
| 6232680 | Cooling apparatus for electronic device An apparatus for cooling an electronic device includes a case where a plurality of air intake/exhaust holes through which air passes are formed. A plate type mobile member is installed to vibrate in the case and divides an inner space of the case into an ... | 05/15/2001 |
| 5838079 | Synchronous linear motor using permanent magnet A synchronous type of linear motor using a permanent magnet comprising a primary magnetic pole member (a three-phase coil) and a secondary magnetic pole member (a permanent magnet) each for generating a repulsive force making use of mutual repulsion betwe... | 11/17/1998 |
| 5717266 | High power oscillatory drive An oscillatory drive incorporating the invention includes a driven rotor that is mounted on a shaft and includes plural driven permanent magnets disposed thereon. A spring arrangement is coupled to the driven rotor and limits both clock-wise (CW) and coun... | 02/10/1998 |
| 5670834 | Electric power converter with load compensation Electric power converter with load compensation, especially for electrical loads subject to fluctuations in demand for power, such as arc furnaces, welders, etc. An external source of electrical power is applied to a stationary input winding of the conver... | 09/23/1997 |
| 5430009 | Superconducting generator A contactless electrical generator assembly containing a stator and a rotor located within the stator is disclosed. The stator is formed by at least one section of superconductive material and at least one electromagnetic coil. The interior surfaces of th... | 07/04/1995 |
| 5406152 | Electromagnetic vibration generator An electromagnetic vibration generator includes a housing, a U-shaped magnet core disposed in the housing and having parallel-extending legs each terminating in a pole face, and an excitation winding inserted on each core leg. The magnet core is encased i... | 04/11/1995 |
| 5276372 | Reciprocating electric motor The rotor of an electric motor is a crank shaft driven through connecting rods by piston-like reciprocating members powered by superconducting electromagnets. The electromagnets can be solenoids of conventional material cryogenically cooled to superconduc... | 01/04/1994 |
| 5212416 | Primary coil assembly for a superconducting linear induction motor A primary coil assembly for a superconducting linear induction motor is provided which is arranged opposite to a secondary conductor for exerting a relative thrust on the secondary conductor when energized. The primary coil assembly comprises a plurality ... | 05/18/1993 |
| 5057724 | Ceramic magnet motor A motor has a plurality of pistons each of which has a ceramic magnet mounted thereon. The ceramic magnets are permanently polarized, and each piston is mounted in a cylinder to reciprocate within that cylinder. An electromagnet is located at each end of ... | 10/15/1991 |
| 4965864 | Linear motor An electromechanical linear motor incorporating a number of electrically conductive drive coils arranged axially and embedded in a composite matrix so as to form a hollow cylinder within which a piston or pistons are placed. Permanent magnets or conductiv... | 10/23/1990 |
