| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 360990120 | Disk seating | 26 |
| 20080231990 | CLAMPS FOR SECURING A MEDIUM IN A MEMORY STORAGE DEVICE - A storage medium device in which one or more storage media used for storing data can be mounted includes a drive unit for rotating the storage medium, and a hub that permits stacking of multiple storage media, the hub being coupled to the drive unit. A clamp is secured by a load applied to the storage media which passes through the hub. The clamp includes an upper surface having a mechanism for fixture to the hub, a weld part for welding to the storage media and applying a load to the storage media, and a sidewall forming a cylinder around the hub. The sidewall having openings, and joining the upper surface and the weld part. The clamp is particularly useful when less than all of the media the storage device is designed to accommodate are provided in the storage device. | 09-25-2008 |
| 20090268342 | DISK CLAMP AND HARD DISK DRIVE HAVING THE SAME - A disk clamp to fix a disk to a hub of a spindle motor in a hard disk drive, and a hard disk drive having the disk clamp. The disk clamp can include a coupling hole formed at a center of the disk clamp, in which a clamping screw is inserted, at least one through hole formed outside the coupling hole, and a pressing portion provided at an outer circumferential side of the disk clamp to contact and press the disk. A particular area around the at least one through hole that is away from the at least one through hole can have a sectional thickness thinner than a predetermined area that is adjacent to the at least one through hole, to prevent stress distribution generated at a contact surface between the pressing portion and the disk from being irregular due to the at least one through hole. | 10-29-2009 |
| 20100265615 | STORAGE DEVICE - According to one embodiment, a storage device includes a clamp ring on a disc, configured to fix the disc to a spindle motor configured to rotate the disc, and a screw configured to fix the clamp ring to the spindle motor, and includes a screw-head and a recess in the screw-head, a center of the recess being decentered from a center of the screw-head. | 10-21-2010 |
| 20110109991 | DISK DRIVE DEVICE IN WHICH REDUCTION IN UNBALANCED AMOUNT CAN BE ADJUSTED - A disk drive device includes: a hub on which a recording disk is to be mounted; a base member; a bearing unit configured to support the hub in a manner in which the hub can be relatively rotated with respect to the base member; an extended annular groove portion provided in part of the hub around the rotational axis of the hub; and a weight member that is installed in the extended annular groove portion to adjust a rotational balance when the recording disk is being rotated with the hub. The weight member has a fixing mechanism that is slidable, when installed, in the direction of the extended annular groove portion and that can substantially maintain a stopped state at a fixing position. | 05-12-2011 |
| 20110170215 | ASYMMETRIC DISK CLAMP AND SPINDLE MOTOR ASSEMBLY INCLUDING ASYMMETRIC DISK CLAMP - A spindle motor assembly includes a spindle motor, a disk for storing data, the disk being installed on the spindle motor, and a disk clamp for fixing the disk to the spindle motor. The disk clamp includes a hollow formed in a central portion thereof, a coupling portion formed around an external circumference of the hollow and including a plurality of screw insertion holes into which clamp fastening screws to be coupled to the spindle motor are inserted, and a pressing portion formed around an external circumference of the coupling portion to press the disk. The coupling portion includes a first region and a second region that are asymmetrical with respect to each other, the plurality of screw insertion holes are formed in the first region only, and a thickness extension portion or a through hole is formed in at least a portion of the second region. | 07-14-2011 |
| 20120002324 | DISK DRIVE WITH BALANCE PLUG HAVING LONGITUDINAL RETAINERS - Described herein is a disk drive balance plug that includes a substantially cylindrical body defining a first end, a second end, a substantially cylindrical outer surface, and a plug central axis. The balance plug also preferably includes at least one protrusion extending along the cylindrical outer surface between the first and second ends in a direction substantially aligned with the plug central axis. | 01-05-2012 |
| 20120069469 | CLAMPING DEVICE FOR A ROTATABLE COMPONENT OF A MACHINE INCLUDING A BALANCE HOLE CONFIGURED TO CONFINE A COUNTERWEIGHT - A clamping device for coupling a rotatable component of a machine with a shaft, including a balance hole configured to confine a counterweight. The clamping device includes a circular plate. The circular plate includes at least one fastener hole configured to accept a fastener, and at least one balance hole. The fastener is configured to fasten the clamping device to couple the component with the shaft. The balance hole includes a cavity configured to accept a counterweight. The counterweight is configured to balance the rotational motion of at least the circular plate when the shaft is rotated. Moreover, the cavity is configured to confine the counterweight to an end of the cavity by effects of rotation of the shaft on the counterweight when the shaft is rotated. | 03-22-2012 |
| 20140036392 | ULTRA-THIN HDD EMBEDDED DISK CLAMP DESIGN - A disk drive having a hub comprising a top surface and a non-circular protrusion extending upward from the top surface, a disk clamp comprising a wall portion and a non-circular opening formed through the clamp, the opening configured to receive the non-circular protrusion extending upward from the top surface of the hub; and at least one disk supported by the hub, wherein the non-circular protrusion extending upward from the top surface of the hub is inserted into the opening formed in the clamp, and wherein an outer annular portion of the clamp engages the disk to provide clamping force. | 02-06-2014 |
| 20140063654 | METHODS FOR BALANCING A DISK DRIVE - In certain embodiments, a hard disk drive includes at least one disk secured to a motor hub with a disk clamp. The disk clamp is positioned radially off-center with respect to the hub to balance a static drive imbalance. | 03-06-2014 |
| 20140063655 | ROTATING APPARATUS CAPABLE OF IMPROVING THE SHOCK RESISTANCE AND METHOD FOR MANUFACTURING THE ROTATING APPARATUS - A disk drive device includes a hub, a base plate, and a bearing unit. The bearing unit includes a shaft housing member, joined to the hub, having a through-hole in the center, a shaft having a smaller diameter section and a larger diameter section, a radial dynamic pressure grooves, and a lubricant agent. The opening shape of bearing hole of the base plate is so formed as to be larger than the outer shape of the larger diameter section. In the bearing unit, the larger diameter section of the bearing unit is fixed by a hardening resin present between the bearing unit and the bearing hole. | 03-06-2014 |
| 20140118859 | SPINDLE MOTOR AND HARD DISK DRIVE INCLUDING THE SAME - There are provided a spindle motor and a hard disk drive including the same. The spindle motor includes a shaft fixedly installed on a base member and including an upper thrust member, a sleeve rotatably supported by the shaft, a hub extended from the sleeve in an outer diameter direction, and a sealing cap mounted on the hub, wherein the upper thrust member and the sleeve or the hub include a liquid-vapor interface formed therebetween, wherein a gap between facing surfaces of the sealing cap and the upper thrust member in the axial direction is narrow enough to form a labyrinth seal, and wherein the sealing cap includes a curved part curved so that a gap between the sealing cap and the upper thrust member at a portion of the sealing cap facing the upper thrust member in the axial direction is varied in a radial direction. | 05-01-2014 |
| 20140139950 | DEBRIS REDUCING DISK CLAMP FOR DISK DRIVES - A disk clamp for clamping a plurality of disks within a disk drive has a single fastening hole located at its symmetrical center sized to pass the shaft of a screw having a head diameter larger than the fastening hole. The screw fastens the disk clamp to a motor hub supporting the plurality of disks. The disk clamp has a moat around the fastening hole, at a maximum diameter that is smaller than the head diameter of the head on the fastening screw. The moat may be circular, have spike trenches angled toward the fastening hole, or be spiral. The diameter of the spiral moat decreases in a clockwise or counterclockwise direction toward the fastening hole. The midsection of the disk which the screw head covers is biased at a negative angle toward the fastening hole forcing particles generated during assembly toward the fastening hole of the disk clamp. | 05-22-2014 |
| 20140247518 | FLUID DYNAMIC BEARING UNIT AND DISK DRIVE DEVICE INCLUDING THE SAME - A first sleeve rotatably extends around a shaft. First and second flanges are fixed to the shaft. A second sleeve extending around the first sleeve is fixed thereto. A first annular member fixed to the second sleeve surrounds the first flange. A second annular member fixed to the second flange surrounds a portion of the second sleeve. A first capillary seal includes a clearance between the first flange and the first annular member. A second capillary seal includes a clearance between the second annular member and the second sleeve. Lubricant is provided in the clearances in the first and second capillary seals. The second annular member and the second sleeve are designed so that the lubricant in the clearance in the second capillary seal can be viewed from a point in a radial position which is outward of the second sleeve as seen in an axial direction. | 09-04-2014 |
| 20140293483 | DISK CLAMP AND LOCK - Provided herein is an apparatus, including a clamping means for clamping at least one disk onto a hub at a mounting point on the hub for the at least one disk, wherein the clamping means is configured to sit wholly above the at least one disk; a seat in an outer perimeter of the hub configured to receive the clamping means; and a locking means for locking the clamping means onto the hub. | 10-02-2014 |
| 20140293484 | DISK CLAMP WITH FLANGES - Provided herein is an apparatus, including a plurality of flanges extending to form an inner perimeter of an inner opening of an annular disk clamp; and an annular groove in an outer perimeter of a hub configured to receive the plurality of flanges of the annular disk clamp, wherein the disk clamp is seated above at least one disk when clamping the at least one disk onto the hub at a mounting point for the at least one disk. | 10-02-2014 |
| 20140307347 | ROTATING DEVICE - A rotating device comprises: a hub on which magnetic recording disks are to be mounted; a shaft which extends along a rotational axis of the hub; a shaft surrounding member which surrounds one end of the shaft so as to rotatably support the shaft; and a base which fixedly supports the shaft surrounding member. A lubricant agent is interposed between the shaft and the shaft surrounding member. A radial gap between the shaft and the shaft surrounding member includes radial dynamic pressure generating portions which generate a dynamic pressure applied to the lubricant agent in a radial direction when the shaft is rotated with respect to the shaft surrounding member. A hub fixation screw hole is provided to the other end face of the shaft along the rotational axis. The hub is fixed to the shaft by coupling a hub fixation screw with the hub fixation screw hole. | 10-16-2014 |
| 20140321002 | MAGNETIC DISK DRIVE DEVICE, MAGNETIC DISK ASSEMBLY AND METHODS OF FORMING THE SAME - A magnetic disk drive device for rotary driving a magnetic disk may be provided. The magnetic disk drive device may include a drive motor for rotary driving the magnetic disk. The drive motor may include a motor hub which has motor hub support portion with a screw-type motor hub engaging portion, and a motor hub support surface for supporting the magnetic disk. The magnetic disk drive device may also include a clamp disk including a clamp disk support portion with a screw-type clamp disk engaging portion complementary to the motor hub engaging portion, and a clamp disk support surface for supporting the magnetic disk. | 10-30-2014 |
| 20140334036 | ROTATING DEVICE - A rotating device comprises: a rotor comprising: a hub on which a magnetic recording disk is to be mounted; a shaft extending along a rotational axis of the hub, one side of the shaft being fixed to the hub; a flange surrounding the other side of the shaft, the flange being fixed to the shaft; and a shaft support member surrounding the shaft and rotatably supporting the shaft. A lubricant agent is interposed between the shaft and the shaft support member. The gas-liquid interface of the lubricant agent is provided in a gap between the shaft and the shaft support member. The hub includes a surrounding portion which surrounds the shaft support member. A gap defined between the surrounding portion and the shaft support member communicates with the gas side of the gas-liquid interface. The gap thus defined is positioned radially inward from the outer face of the flange. | 11-13-2014 |
| 20140355155 | DISK DRIVE DEVICE - A disk drive device includes: a chassis; an annular hub on which a recording disk is to be mounted; a fluid dynamic bearing mechanism that supports the hub freely rotatable relative to the chassis; an annular extended portion extending outwardly in a radial direction from the hub; and an annular recess which is provided in the chassis and where the annular extended portion at least partially enters in the radial direction, in which a gap between the annular recess and the annular extended portion includes a portion that forms a flexed labyrinth in a cross-sectional view. | 12-04-2014 |
| 20150015994 | ROTARY DEVICE - A rotary device includes a fixed member including a shaft body having first and second shaft ends, a rotating member being rotatably supported by the fixed member and including a bearing body that accommodates the second shaft end, and a fitting part to which a recording disk is to be fitted at a fitting section, and dynamic pressure generation parts provided in a space between the fixed member and the rotating member. The fitting section includes a first end provided toward the first shaft end and a second end provided toward the second shaft end. The bearing body is supported by the shaft body at a radial gap section extending between the dynamic pressure generation parts in an axial direction of the shaft body. The second end of the fitting section is positioned within the radial gap section with respect to the axial direction. | 01-15-2015 |
| 20150085399 | ROTATING APPARATUS CAPABLE OF IMPROVING THE SHOCK RESISTANCE AND METHOD FOR MANUFACTURING THE ROTATING APPARATUS - A rotating apparatus includes a hub, a shaft housing portion having a center through-hole, a base plate, and a shaft with a cylindrical section housed in the through-hole. At a joint between the shaft housing portion and the hub is formed a bonding region for bonding the shaft housing portion and the hub by a hardening resin, and a narrow-gap region more toward the base plate than the bonding region. A gap between the shaft housing portion and the hub in the narrow-gap region is narrower than a gap between the shaft housing portion and the hub in the bonding region. The hub includes a fourth circumferential recessed portion recessed in the axial direction and a lower circumferential raised portion projecting in the axial direction on a radially inner side of the fourth circumferential recessed portion. The narrow-gap region is located inside the lower circumferential raised portion. | 03-26-2015 |
| 20150092300 | ROTARY DEVICE - A rotary device includes a rotatable member having an annular recess and a stationary member rotatably supporting the rotatable member. A circular cap having an outer circumferential edge is fixed to the rotatable member so as to cover an opening of a gap between the rotatable member and the stationary member. A receiving section, which has a shape to receive an adhesive on an outer peripheral portion of the cap, includes a diameter reduction part on the outer circumferential edge. The diameter reduction part has a smaller outer diameter than a maximum outer diameter of the outer circumferential edge. The thickness of the diameter reduction part is larger than or equal to a half of an entire thickness of the outer circumferential edge. An adhesive is applied to the diameter reduction part and the inner peripheral portion. | 04-02-2015 |
| 20150340058 | ROTATING DEVICE - A rotating device includes: a hub mounting a recording disk; a base rotatably supporting the hub via a bearing, a core fixedly mounted on the base, and having a circular portion and salient poles protruding radially outward; a coil wound around the salient poles; and an FPC including driving lines. The base has a wire hole that communicates between an upper face that faces the coil in the axial direction and an opposite lower face. The lower face has a bottom recess portion surrounding a hub rotational axis, and regions facing each other across the rotational axis. The FPC includes an arc section housed in the bottom recess portion. Each lead wire is drawn out from the coil to the lower-face side via the wire hole, and is connected to the driving line on a connection land formed at an interval from the wire hole in the circumferential direction. | 11-26-2015 |
| 20150348582 | SPINDLE MOTOR AND DISK DRIVE APPARATUS - A motor includes a rotor hub with a first horizontal surface, a cylindrical surface, a second horizontal surface, and a projecting portion. The first horizontal surface is located above the sleeve. The cylindrical surface extends downward from the first horizontal surface. The second horizontal surface is located above a stator. The projecting portion projects downward from the second horizontal surface, and surrounds the sleeve or the holding portion. The cylindrical surface and an outer circumferential surface of the sleeve together define a tapered gap therebetween where the radial distance therebetween decreases with increasing height. The holding portion, the projecting portion, and coils are located radially in this order, and at least portions thereof are positioned to radially overlap with one another. | 12-03-2015 |
| 20150371675 | Hard Disk Drive Low Profile Disk Clamp To Tied-Shaft Motor Assembly - A hard disk drive is described, including a low-profile disk clamp to tied-shaft spindle/spindle motor assembly, in which a clamping nut is threaded onto a threaded spindle sleeve and a stationary shaft screw, or tied-shaft, penetrates through the HDD cover and into a shaft. The disk clamp may include a central opening for centering about the sleeve by way of the outer diameter of the clamping nut mating with the outer diameter of the clamp opening. | 12-24-2015 |
| 20160148639 | SCREWLESS DISC CLAMP - Provided herein is an apparatus that includes a radially extending through hole in an interperimeteral region and a radial channel extending from the through hole to an inner perimeter of an annulus. The radially extending through hole and the radial channel define a compliant flange operable to engage an annular groove. In some embodiments, the apparatus may be used as a screwless disk clamp in a hard disk drive. | 05-26-2016 |
