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| Number | Title | Issue Date |
| 7967575 | Centrifugal fan An arrangement of a low air inlet and a circuit for driving a torque generator in an ultra-compact centrifugal fan is disclosed. In the ultra-compact centrifugal fan, a region occupied by the circuit is not completely arranged radially inside a cup-shaped portion to... | 06/28/2011 |
| 7962928 | Brushless motor, and disk drive equipped with the same In a brushless motor for use in a disk drive, a rotor is mounted onto a tube portion of a housing. A retaining claw is formed at an upper end of the tube portion. A turntable has a central concave portion which accommodates an upper portion of the tube portion of th... | 06/14/2011 |
| 7946805 | Fan unit including tapered airflow passage An axial fan unit includes two or more impellers which rotate about a center axis in opposite directions relative to each other to create an axial airflow. Each impeller includes a hub and a plurality of blades disposed around the hub. The impellers are surrounded b... | 05/24/2011 |
| 7946804 | Axial fan unit having reduced noise generation An axial fan unit includes two or more impellers accommodated in a housing. Each impeller has a plurality of blades disposed about a center axis and is rotated by an associated motor. The rotation of the impellers creates a flow of air generally flowing along the ce... | 05/24/2011 |
| 7946770 | Hydrodynamic bearing device A hydrodynamic bearing device has favorable bearing performance and long endurance life. A thrust bearing part of the hydrodynamic bearing device has a second thrust surface. In the second thrust surface, a dynamic pressure generating groove area having a plurality ... | 05/24/2011 |
| 7946769 | Bearing mechanism, spindle motor and data storage medium drive apparatus A bearing mechanism includes a shaft, a bearing portion, and a cover closing a bottom end of the bearing portion. The bearing portion and the cover are preferably connected to one another by laser welding. A surface of a welded portion formed by the laser welding in... | 05/24/2011 |
| 7940493 | Spindle motor including flexible circuit substrate and recording disk drive having the spindle motor Using a simple and inexpensive method, a reliable spindle motor having a simple and inexpensive structure is afforded, in which contact failure of the FPC does not occur even when the motor undergoes external impact. An extending portion is provided radially outer s... | 05/10/2011 |
| 7939985 | Motor and method for manufacturing rotor unit of the motor In a rotor unit of a motor, field magnets are inserted into respective magnet holding holes of a rotor core. End plates are arranged on the upper and lower end surfaces of the rotor core to cover the magnets holding holes. Each of the end plates preferably has three... | 05/10/2011 |
| 7937722 | Chucking mechanism, brushless motor having the chucking mechanism, and disk driving apparatus having the brushless motor A chucking mechanism is operable to detachably set thereon a discoid disk. The chucking mechanism includes a center case, a claw member, an elastic member, and a turn table. The claw member includes, a claw portion, and a movement support portion The center case inc... | 05/03/2011 |
| 7921438 | Chucking mechanism, brushless motor having the chucking mechanism, and disk driving apparatus having the brushless motor A claw member includes at a radially inward surface thereof a protrusion inclined surface in order to minimize deformation occurring in an axial direction to an elastic member which is a coil spring. The protrusion inclined surface is preferably inclined, when a tip... | 04/05/2011 |
| 7917918 | Brushless motor having chucking mechanism, and disk driving device having the brushless motor A space for accommodating therein a portion of an optical pickup mechanism is arranged below a disk loading portion of a turn table member of a chucking mechanism of the present invention. The space is arranged axially below a disk mounting surface. Since such space... | 03/29/2011 |
| 7913269 | Motor and storage disk drive with a chucking mechanism for retaining a data storage disk A motor used for a data storage disk drive is provided. The motor includes a rotor holder having a cylindrical portion. The cylindrical portion has a radially inner surface defining a through hole and an inner protruding section arranged at an axial end portion of t... | 03/22/2011 |
| 7913268 | Motor and manufacturing method of the same A motor is provided with a chucking device enabling attachment and detachment of a disk-shaped storage medium. In the motor, a turntable forming a portion of the chucking device is disposed axially above a rotor holder. The turntable has a placement portion on which... | 03/22/2011 |
| 7908739 | Motor assembly and method of manufacturing thereof In a manufacturing method, energy beam heat is radiated to a target area of the motor assembly which is used for a storage disk drive. By radiating energy beam thereto, a portion of the motor assembly is deformed in a non-contact manner, thus, without being affected... | 03/22/2011 |
| 7908737 | Production method of fluid dynamic-pressure bearing in spindle motor A gas is fed, so as to cause a gas flow to occur from a lower opening of a bearing hole of a sleeve 6 in an outward direction of an annular portion 12a of a rotor hub 12 via a radial gap 50 and an upper opening of the bearing hole,... | 03/22/2011 |
| 7908614 | Chucking mechanism, brushless motor having the chucking mechanism, and disk driving apparatus having the brushless motor A movement pivot receiving portion which receives a movement pivot portion of a claw member and a movement support receiving portion which receives a movement assist portion of the claw member are arranged radially within a cylindrical portion of a center case. By v... | 03/15/2011 |
| 7903406 | Centrifugal fan A centrifugal fan includes a cylindrical housing for housing an impeller, a motor for driving the impeller and a disk-like circuit board that are arranged coaxially in an accumulated manner. When the impeller rotates, air is taken in along the axial direction of the... | 03/08/2011 |
| 7902732 | Motor and storage disk drive using the same In the base bracket of the motor, the bottom-inner surface of the base bracket includes a first bottom-inner area arranged over a circuit board attaching portion of a bottom-outer surface to which the circuit board is attached, and a second bottom-inner area arrange... | 03/08/2011 |
| 7900339 | Method of making a motor including an insulating spacer In a motor, an insulator covering an armature core has a lid covering an end surface of the armature core. The lid has an inner ring disposed radially inside slots of the armature core and an outer ring disposed radially outside the slots. Each of a plurality of slo... | 03/08/2011 |
| 7900223 | Motor with a chucking device for detachably holding a disk and disk drive apparatus equipped with the same In a motor including a chucking device for detachably holding a disk, the chucking device has a center case to which a central opening of the disk is inserted; resilient members received within the center case; and claw members for holding the disk in place. Each of... | 03/01/2011 |
| 7890970 | Brushless motor, and disk drive equipped with the same In a brushless motor for use in a disk drive, a rotor is mounted onto a tube portion of a housing. A retaining claw is formed at an upper end of the tube portion. A turntable has a central concave portion which accommodates an upper portion of the tube portion of th... | 02/15/2011 |
| 7890969 | Chucking mechanism, brushless motor having the chucking mechanism, and disk driving apparatus having the brushless motor A claw member includes a claw portion and a movement support portion. The movement support portion includes a movement pivot portion which is a pivotal portion of the movement of the claw member, and a movement support portion formed radially inward of the movement ... | 02/15/2011 |
| 7849474 | Motor having chucking device and disk driving apparatus including the same A motor includes a chucking device for detachably holding a disk-shaped storage medium. The chucking device includes a plurality of radially outwardly biased claw members. Further, the claw members make contact with a top surface of a cover portion of a turntable wh... | 12/07/2010 |
| 7877764 | Chucking mechanism, motor having the same, and method of manufacturing the same A turn table of a motor includes a first cylindrical portion extending in an axial direction, a first discoid portion radially outwardly extending from the first cylindrical portion, and a second discoid portion radially outwardly extending from the second cylindric... | 01/25/2011 |
| 7876008 | Fan and motor having multiple insulators with an axially protruding conductor pin Axially upper and lower end surfaces of the stator core 41 are substantially covered by the first insulator 421 and the second insulators 422, both of which are made of resin. A boss 4222 is arranged circumferentially between the two neig... | 01/25/2011 |
| 7876005 | Motor In a motor, a retaining claw with a slanted surface is arranged around the upper end of a tubular portion of a housing for mounting a rotor. A cylindrical portion is integrally formed in a peripheral area of a rotational axis of a turntable. A retaining member with ... | 01/25/2011 |
| 7873971 | Motor having chucking device and disk driving apparatus including same A motor includes a chucking device to hold a disk having a central opening in a detachable manner. In the chucking device, a turntable part is arranged above a rotor holder and has a disk support surface for supporting the disk. An axially slidable cone part is arra... | 01/18/2011 |
| 7868504 | Resolver A resolver rotor for a variable reluctance resolver includes a plurality of axially stacked rotor pieces. The rotor pieces are jointly fitted into one body. In the fitting of the rotor pieces, deformed portions are provided between a center of the radial thickness o... | 01/11/2011 |
| 7866047 | Sleeve-unit manufacturing method In the manufacture of a sleeve unit (22), when a sleeve (221) is to be glued to a sleeve housing (222), an endfaces (225) of the sleeve (221) while abutting on a sleeve retainer (51) is spring-biased along the center axis J | 01/11/2011 |
| 7856642 | Chucking mechanism, brushless motor having the chucking mechanism, and disk driving apparatus having the brushless motor A tip portion of a claw member is, when the same is at a lowest position, axially above a bottom surface of an upper disk base of a multi-layered disk. By virtue of such configuration, the tip portion will not be caught between the upper disk base and a lower disk b... | 12/21/2010 |
| 7841832 | Fan for generating an air flow A weight adjustment portion is formed at an upper end of a hub to project radially inward. An approximately U-shaped balance clip is attached to the weight adjustment portion. A gap to be constantly ensured is formed axially between the weight adjustment portion and... | 11/30/2010 |
| 7839033 | Brushless DC motor and manufacturing method thereof A brushless DC motor includes an embedded memory of a micro computer mounted on a circuit board which can be modified during and/or after a manufacturing process of the brushless DC motor. The circuit board installed on the brushless DC motor includes an IC having t... | 11/23/2010 |
| 7837391 | Bearing retainer unit and electric motor furnished therewith A bearing retainer unit is formed by an insert-molding technique to cast a molded component of the bearing retainer unit utilizing a bearing bushing. A first mold die, having a circumferential surface shaped to correspond to at least a portion of the inner circumfer... | 11/23/2010 |
| 7830062 | Motor having round and angular coils A straight line portion of a substantially U-shaped angular wire having a substantially rectangular cross section and a straight line portion of a substantially U-shaped round wire having a substantially circular cross section are accommodated at a slot arranged at ... | 11/09/2010 |
| 7830051 | Resolver, manufacturing method thereof, and motor using the resolver A resolver includes a terminal block having a plurality of terminals integrally formed therein. Each of the terminals has a conductive wire connecting portion arranged to allow a conductive wire of a resolver stator to be fixed thereto and a lead wire connecting por... | 11/09/2010 |
| 7830049 | Motor and disk drive using the same A thrust yoke is fixed into a second recessed portion of a base with adhesive. The second recessed portion has a first surface to be in contact with the bottom surface of the thrust yoke, and a second surface axially opposing the bottom surface of the thrust yoke wi... | 11/09/2010 |
| 7827673 | Resolver and manufacturing method of the same In a resolver of a motor, a plurality of wires forming a plurality of coils arranged at a resolver stator portion are arranged at a wiring surface which is arranged at a terminal block of a connector portion and extends between an annular shape surface arranged subs... | 11/09/2010 |
| 7825550 | Brushless motor and fan unit A method to hook a magnet wire extracted from a coil A stator core 35 includes a core back 352 of a substantially annular shape. At a radially outer end portion of the core back 352 four teeth 351 are arranged radially. At the teeth 35... | 11/02/2010 |
| 7824154 | Motor having heat-dissipating structure for circuit component and fan unit including the motor An impeller includes an impeller cup and a plurality of blades. The impeller cup is hollow and generally cylindrical and has a lid. A housing is formed to enclose the impeller from the outside thereof. The housing has a wall defining a passage of an airflow generate... | 11/02/2010 |
| 7822323 | Fan Fan includes wires electrically connected to the circuit board outwardly extends from a base toward a housing along a rib connecting the base supporting a motor and the housing. The housing includes a wire-receiving section defined by a through hole extending in the... | 10/26/2010 |
