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Patent Agency Ranking
1.发明授权公开(公告)号：US10811044B2
公开(公告)日：2020-10-20
申请号：US16513585
申请日：2019-07-16
Applicant: Western Digital Technologies, Inc.
Inventor： David Myers , Diep Nguyen , Bikash Sukla
Abstract: An approach to a reduced-head hard disk drive (HDD) involves an actuator subsystem that includes a ball screw cam assembly wherein the number of starts of a multi-start screw equals the number of balls riding in a corresponding start. A stepper motor may be disposed within the screw, to drive rotation of the screw, which drives translation of an actuator arm assembly so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack. The actuator subsystem may further include a cam locking mechanism for coupling and decoupling the actuator arm with a coil support structure and corresponding voice coil, so that the cam mechanism is able to move under the control of a voice coil motor when input/output operations are performed and is able to move the actuator arm assembly during translation operations.
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2.发明申请公开(公告)号：US20200027480A1
公开(公告)日：2020-01-23
申请号：US16513585
申请日：2019-07-16
Applicant: Western Digital Technologies, Inc.
Inventor： David Myers , Diep Nguyen , Bikash Sukla
Abstract: An approach to a reduced-head hard disk drive (HDD) involves an actuator subsystem that includes a ball screw cam assembly wherein the number of starts of a multi-start screw equals the number of balls riding in a corresponding start. A stepper motor may be disposed within the screw, to drive rotation of the screw, which drives translation of an actuator arm assembly so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack. The actuator subsystem may further include a cam locking mechanism for coupling and decoupling the actuator arm with a coil support structure and corresponding voice coil, so that the cam mechanism is able to move under the control of a voice coil motor when input/output operations are performed and is able to move the actuator arm assembly during translation operations.
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公开(公告)号：US10803891B1
公开(公告)日：2020-10-13
申请号：US16516211
申请日：2019-07-18
Applicant: Western Digital Technologies, Inc.
Inventor： Jon Jacoby , David Myers
Abstract: An approach to a reduced-head hard disk drive (HDD) involves a load/unload (LUL) ramp subsystem that includes a ramp assembly that includes a translatable lever member and a LUL ramp member coupled thereto, and interconnected elevator interfaces coupled with the ramp by way of a set of flexures. The ramp subsystem is configured such that in response to a sufficient force being applied to the lever by the HSA, a distal end of the ramp is positioned so that an outer perimeter of a recording disk of an HDD is free of a channel at the distal end of the ramp. The subsystem may further include a motor configured to drive rotation of a lead screw to which the ramp assembly is attached, to drive vertical translation of the ramp assembly, thereby providing for loading the vertically-translatable HSA onto and off of each of the disks of a multiple-disk stack.
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公开(公告)号：US20200027479A1
公开(公告)日：2020-01-23
申请号：US16513611
申请日：2019-07-16
Applicant: Western Digital Technologies, Inc.
Inventor： David Myers , Diep Nguyen
Abstract: An approach to a reduced-head hard disk drive (HDD) involves an actuator subsystem that includes a ball screw cam assembly wherein the number of starts of a multi-start screw equals the number of balls riding in a corresponding start. A stepper motor may be disposed within the screw, to drive rotation of the screw, which drives translation of an actuator arm assembly so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack. The actuator subsystem may further include a cam locking mechanism for coupling and decoupling the actuator arm with a coil support structure and corresponding voice coil, so that the cam mechanism is able to move under the control of a voice coil motor when input/output operations are performed and is able to move the actuator arm assembly during translation operations.
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公开(公告)号：US10902871B2
公开(公告)日：2021-01-26
申请号：US16513611
申请日：2019-07-16
Applicant: Western Digital Technologies, Inc.
Inventor： David Myers , Diep Nguyen
Abstract: An approach to a reduced-head hard disk drive (HDD) involves an actuator subsystem that includes a ball screw cam assembly wherein the number of starts of a multi-start screw equals the number of balls riding in a corresponding start. A stepper motor may be disposed within the screw, to drive rotation of the screw, which drives translation of an actuator arm assembly so that a corresponding pair of read-write heads can access different magnetic-recording disks of a multiple-disk stack. The actuator subsystem may further include a cam locking mechanism for coupling and decoupling the actuator arm with a coil support structure and corresponding voice coil, so that the cam mechanism is able to move under the control of a voice coil motor when input/output operations are performed and is able to move the actuator arm assembly during translation operations.
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