| Patent Number |
Title Of Patent |
Date Issued |
| 7224546 |
Disk drive employing a calibrated brake pulse to reduce acoustic noise when latching an actuator |
May 29, 2007 |
| A disk drive is disclosed comprising a disk and a voice coil motor (VCM) for rotating an actuator arm about a pivot in order to actuate a head over the disk. During a park operation, a latching characteristic associated with latching the actuator arm is measured and used to configure |
| 5859751 |
Air actuated latching mechanism rotationally resistant to rotational shock force |
January 12, 1999 |
| An airlock latch assembly for restraining a disk drive actuator when the disk drive is subjected to rotary shock forces includes a first member and a second member rotatably mounted to the disk drive base. The second member engages the first member, preventing the first member from d |
| 5715118 |
Air actuated latching mechanism rotationally resistant to rotational shock force |
February 3, 1998 |
| An airlock latch assembly for restraining a disk drive actuator when the disk drive is subjected to rotary shock forces includes a first member and a second member rotatably mounted to the disk drive base. The second member engages the first member, preventing the first member from d |
| 5621590 |
Actuator apparatus with plastic C-block |
April 15, 1997 |
| An improved actuator apparatus is employed in a hard disk drive device for positioning read/write heads over tracks on a data storage disk of the disk drive. The actuator apparatus includes an all plastic C-block assembly providing the actuator apparatus with a reduced weight, lower |
| 5510940 |
Ball spindle for reduced friction rotary actuator in disk drive |
April 23, 1996 |
| A low friction bearing is provided for a mass balanced rotary voice coil actuator of a disk drive including a base. The bearing comprises an upper pivot bearing assembly fixed to one of the actuator and the base and including a plurality of small bearing balls in an outer bearing race |
| 5506458 |
Low cost permanent magnet disk spindle motor |
April 9, 1996 |
| A low cost, polyphase spindle motor for a hard disk drive comprises a base, a cup-shaped rotating hub for mounting at least one rotating data storage disk, a bearing assembly mounted between the base and the hub enabling rotation of the hub relative to the base, and a cylindrical permane |
| 5452162 |
Active electromagentic latch having no moving parts for disk file actuator |
September 19, 1995 |
| A magnetic latch for a disk file actuator comprises a latch plate formed of a magnetic material of low magnetic hardness located on the actuator; a core ferromagnetic material of medium magnetic hardness mounted relative to the base and surrounded by a coil. A power supply is selectively |
| 5282100 |
Disk drive with reduced acoustic noise |
January 25, 1994 |
| A miniature fixed disk drive data storage and retrieval subsystem manifesting reduced acoustical noise during data storage and retrieval operations includes a flat, generally rectangular box-shaped base defining a substantially continuous bottom wall and a continuous peripheral sidew |
| 5255136 |
High capacity submicro-winchester fixed disk drive |
October 19, 1993 |
| A miniature disk drive achieves storage densities of at least approximately 1700 tracks per inch per storage surface of a storage disk defining a series of radially extensive servo sectors embedded within circumferential zones of data tracks. The sectors are recorded at a constant data t |
| 5187621 |
RFI/EMI reduction for head and disk assembly |
February 16, 1993 |
| Apparatus providing improved RFI/EMI shielding includes a base of conductive material, such as cast or forged aluminum alloy, the base defining a substantially continuous floor and integrally formed base sidewalls extending upwardly from the floor along the periphery thereof. The bas |
