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| Number | Title | Issue Date |
| 7986063 | Cylindrical coil and cylindrical micromotor using the same A high-precision cylindrical coil having a high-precision fine coil pattern and a high mechanical precision such as fine roundness and no axial runout, and a cylindrical micrometer using the cylindrical coil are provided. In a cylindrical coil, a plurality of... | 07/26/2011 |
| 7884510 | Small-sized motor The present invention is used with a stopper mechanism for mechanically stopping the rotation of a motor. A pair of brushes is disposed such that a line which passes through the center of a rotor and connects the centers of the paired brushes is offset by a predeter... | 02/08/2011 |
| 7834491 | Electric motor A small size permanent magnet direct current motor has a housing accommodating a permanent magnet stator and a wound rotor. The rotor has a rotor core with a diameter of 23 mm±3 mm and 12 poles and a cylindrical commutator. The motor has an output power of more tha... | 11/16/2010 |
| 7830048 | Micro motor The present invention relates to a micro motor including a hub, a rib structure, an inner ring, an outer ring and at least two micro actuators, in which a top edge of the hub is projected outwardly to form a top lid, a plurality of bumps are provided between the rib... | 11/09/2010 |
| 7635931 | Stepping motor In a stepping motor including two stators and a rotor having two magnets, three dimensional relations, specifically a relation of Lm/Ls, another relation of d/2Lm, and still another relation d/D, are optimally determined while satisfying their respective ranges: 0.3... | 12/22/2009 |
| 7605500 | Miniature generator A miniature generator includes a carrier having a tubular shaft on the inside, a substantially C-shaped permanent magnet mounted on the tubular shaft inside the carrier, a match mounted on the tubular shaft inside the carrier and joined to the permanent magnet to ke... | 10/20/2009 |
| 7582992 | Electrical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same Electromechanical systems utilizing suspended conducting nanometer-scale beams are provided and may be used in applications, such as, motors, generators, pumps, fans, compressors, propulsion systems, transmitters, receivers, heat engines, heat pumps, magnetic field ... | 09/01/2009 |
| 7440155 | Mass-balanced actuating mechanism for a micro scanning device An actuating mechanism includes a scanner chip having a scan table mounting cavity, and a bracket moveably positioned in the scan table mounting cavity. A scan table is moveably positioned in the bracket. The bracket has a first mass and the scan table has a second ... | 10/21/2008 |
| 7427817 | Small-sized motor having polygonal outer shape A small-sized motor having a polygonal outer shape includes four or more field magnets attached to the inner surface of a motor casing made of metal. A tubular portion of the motor casing is formed into a polygonal tubular shape such that flat side portions equal in... | 09/23/2008 |
| 7411322 | Micromachined reluctance motor A reluctance motor having a movable part that does not need a fixed mounting shaft in the motor's stationary part. In one embodiment, a motor of the invention has a stationary part that defines a cylindrical cavity into which a rotor is inserted, with an interior wa... | 08/12/2008 |
| 7385320 | Step motor A step motor includes a rotor having four magnetic poles, a first magnetic pole magnetically excited by a first coil, a second magnetic pole magnetically excited by a second coil, and a third magnetic pole magnetically excited by the first coil and the second coil. ... | 06/10/2008 |
| 7368843 | Commutator motor A commutator motor includes a stator and a rotor, and the stator includes a stator yoke and a field magnet. The field magnet is fixed onto the inner peripheral surface of the substantially cylindrical stator yoke. The stator yoke is configured by coaxially stacking ... | 05/06/2008 |
| 7365459 | Electric motor An electric motor has a hollow-cylindrical motor housing containing end plates that are mounted in the motor housing via respective centering flanges. A discrete electrical component is connected in parallel to electrical connections of the electric motor that are f... | 04/29/2008 |
| 7348696 | Stepping motor A stepping motor comprises a stator core, a drive coil which is attached to the stator core and a terminal block having a plurality of terminal pins to be wound with the terminals of the drive coil windings. The stator core and terminal block have respective fitting... | 03/25/2008 |
| 7348701 | Driving unit and image forming apparatus A driving unit including a motor, a support bracket supporting the motor, at least one stud supporting a gear which is rotated with a driving force of the motor, and a heatproof member disposed between a frame fastening the support bracket and the stud, and an image... | 03/25/2008 |
| 7342473 | Method and apparatus for reducing cantilever stress in magnetically actuated relays Methods, systems, and apparatuses are disclosed for magnetically-actuated relays/switches that suppress cantilever and/or hinge deformation. A permanent magnet produces a first magnetic field. A movable element is held between a pair of axially-aligned, rotationally... | 03/11/2008 |
| 7336000 | Electrical power regulation for a turbogenerator and generator associated with an internal combustion engine A speed monitor for establishing a lower threshold and an upper threshold for a speed of a rotor or shaft of a turbogenerator. A speed detector detects speed data or a speed signal for a rotor or shaft associated with a turbogenerator. A turbogenerator controller co... | 02/26/2008 |
| 7328616 | Digital angular velocity detection device A digital angular velocity detection device, including a stat or formed on a substrate. A rotor operable to rotate in response to an external force is provided. The rotor has a plurality of electrodes formed at regular intervals on a curve at a predetermined radius ... | 02/12/2008 |
| 7323797 | Power tool It is an object of the invention to provide an effective technique for making compact power tool having an electric motor. A representative power tool may include a tool bit, housing and an electric motor. The electric motor is housed in the housing and drives the t... | 01/29/2008 |
| 7320527 | Mirror and angle detection device A vehicle mirror comprises: a mirror surface; an actuator 100 which tilts the mirror surface; a plate pivot 110, which changes its direction together with the mirror surface; a spring 112, which applies a resilient force to the plate pivot 11... | 01/22/2008 |
| 7317367 | Electrical apparatus A micro-switch comprises at least one coil (22) of elongate electrically conductive material mounted on the support means (16). A movable actuator portion (20) of electrically conductive material is attached to the support means (16) so a... | 01/08/2008 |
| 7317270 | Electric machine with transducer system An electric machine includes a stator, a rotor, an electrically insulated bearing unit for supporting the rotor, a transducer system, and at least one torque support for connecting the transducer system to the rotor and the stator. In order to prevent a potential eq... | 01/08/2008 |
| 7304408 | Driving apparatus and light amount adjustment apparatus A driving apparatus includes a magnet that is magnetized to at least two poles in a circumferential direction and fixed to a rotor axis formed with a soft magnetic material, and first and second coils arranged in the same direction as the magnet with respect to the ... | 12/04/2007 |
| 7291951 | Actuator including intermediate wall An actuator has a housing that accommodates a motor, an output shaft for rotating a lamp unit that radiates light, a drive mechanism portion formed from a transmission gear system for transmitting rotation from the motor to the output shaft, and a control circuit po... | 11/06/2007 |
| 7271518 | Balancing structure for motor A motor includes a fixed portion, a rotor, and at least one balancing plate fixed on the fixed portion. The fixed portion includes a stator having a plurality of pole plates that extend to form a plurality of pole faces, with a gap being defined between a pair of th... | 09/18/2007 |
| 7259486 | Axial fan In an axial fan, a case (40) accommodating the fan motor stator (50) is anchored into a bearing retainer (10), in which ball bearings (20, 21) as a bearing unit are accommodated, along a bulge part (13) formed on the lower end port... | 08/21/2007 |
| 7250838 | Packaging of a micro-magnetic switch with a patterned permanent magnet A method and apparatus for packaging a plurality of micro-magnetic switches is described. A bonded substrate structure includes a first substrate, a second substrate, and a magnetic layer. The first substrate has a plurality of cantilevers formed thereon. The second... | 07/31/2007 |
| 7240420 | System and method for post-fabrication reduction of minimum feature size spacing of microcomponents A system and method are disclosed which enable post-fabrication reduction of minimum feature size spacing of microcomponents. A method for producing an assembly of microcomponents is provided, in which at least two microcomponents are fabricated having a separation ... | 07/10/2007 |
| 7239054 | Method of forming a micro-rotating device, and a micro-rotating device produced by the method A micro-rotating device has a rotor 200 (of diameter not more than 1.5 cm), a shaft 202 threaded through the rotor 200, and a shaft holder 207 for holding the shaft. The shaft holders are formed by etching an Si substrate 501 to fo... | 07/03/2007 |
| 7235908 | Motor actuator having motor holding arrangement A motor includes a motor housing and a rotor that is rotatably received in the motor housing. Holding portions hold the motor in a manner that limits turning of the motor housing around a rotational axis of the motor while permitting movement of the motor housing in... | 06/26/2007 |
| 7225674 | Self-stabilizing, floating microelectromechanical device The present invention relates to MicroElectroMechanical Systems (MEMS), devices and applications thereof in which a proof mass is caused to levitate by electrostatic repulsion. Configurations of electrodes are described that result in self-stabilized floating of the... | 06/05/2007 |
| 7211917 | Motor with a magnet fixed on the inner peripheral face of a circumferential wall A motor includes a circumferential wall part of a case provided with an opening part on one end side in an axial direction and at least a magnet fixed to the inner peripheral face of the circumferential wall part. At least a part of the outer peripheral face of the ... | 05/01/2007 |
| 7202764 | Noble metal contacts for micro-electromechanical switches A semiconductor micro-electromechanical system (MEMS) switch provided with noble metal contacts that act as an oxygen barrier to copper electrodes is described. The MEMS switch is fully integrated into a CMOS semiconductor fabrication line. The integration technique... | 04/10/2007 |
| 7202763 | Micro-electromechanical switching device The invention relates to an electromechanical switching device including at least one pair of inductive elements electrically connected in series, said inductive elements being intended to generate two magnetic fields when current is flowing through said inductive e... | 04/10/2007 |
| 7199498 | Electrical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same Electromechanical systems utilizing suspended conducting nanometer-scale beams are provided and may be used in applications, such as, motors, generators, pumps, fans, compressors, propulsion systems, transmitters, receivers, heat engines, heat pumps, magnetic field ... | 04/03/2007 |
| 7198975 | Semiconductor methods and structures A method and a structure are provided for preventing lift-off of a semiconductor monitor pattern from a substrate. A semiconductor structure and a semiconductor monitor structure are formed on a substrate. A material layer is formed covering the semiconductor monito... | 04/03/2007 |
| 7196450 | Electromechanical assemblies using molecular-scale electrically conductive and mechanically flexible beams and methods for application of same Electromechanical systems utilizing suspended conducting nanometer-scale beams are provided and may be used in applications, such as, motors, generators, pumps, fans, compressors, propulsion systems, transmitters, receivers, heat engines, heat pumps, magnetic field ... | 03/27/2007 |
| 7196449 | Two-axis device and manufacturing method therefor A two-axis device is provided. The two-axis device includes a first substrate having a plurality of electrodes, a first connecting layer located on the first substrate, an actuating layer, a second connecting layer and a cover. The actuating layer is connected to th... | 03/27/2007 |
| 7191674 | Stepper mechanical drive system A stepper mechanical drive system includes a carriage, a support for the carriage that permits the carriage to move bidirectionally along a travel direction, and a follower structure on the carriage, The follower structure has two ramp structures that each extends l... | 03/20/2007 |
| 7188401 | Motor case In a motor case 1, recesses 8 are formed in inner surfaces of upper and bottom surface portions 2 and 3 (which are spaced from each other by a distance smaller than the distance between left and right side surface portions 4 and | 03/13/2007 |
