Head stack load comb for controlled head loading
AssigneeWestern Digital Technologies, Inc.
InventorsJai N. Subrahmanyam, Serge Hauert
Life of this patent
Estimating the term…
Abstract
Disclosed is a head stack load comb used in the controlled loading of a head of a head stack assembly (HSA) onto a disk during the assembly of a disk drive. The HSA includes an actuator arm, a head, and a loading surface. The load comb includes a base structure and at least one ramp finger projecting approximately perpendicularly from the base structure. In order to load the head in a controlled manner onto the disk, the loading surface of the HSA is rotated along the ramp finger until the head is in a load position and then the base structure is actuated in a vertical direction such that the ramp finger is correspondingly actuated in the vertical direction towards the disk until the head is loaded onto the disk.
Claims9
A load comb used in the controlled loading of a head of a head stack assembly (HSA) onto a disk during the assembly of a disk drive, the HSA including an actuator arm, a head, and a loading surface, the load comb comprising:
- a base structure;
- and
- at least one ramp finger projecting approximately perpendicularly from the base structure, the ramp finger including a bimetallic strip;
- wherein, in order to load the head in a controlled manner onto the disk, the loading surface of the HSA is rotated along the ramp finger until the head is in a load position and then the base structure is actuated in a vertical direction by providing current to the bimetallic strip of the ramp finger causing the ramp finger to be actuated in the vertical direction towards the disk until the head is loaded onto the disk.
A load comb used in the controlled loading of a head of a head stack assembly (HSA) onto a disk during the assembly of a disk drive, the HSA including an actuator arm, a head, and a loading surface, the load comb comprising:
- a base structure including a MicroElectricalMechanical system (MEMS) device;
- and
- at least one ramp finger projecting approximately perpendicularly from the base structure;
- wherein, in order to load the head in a controlled manner onto the disk, the loading surface of the HSA is rotated along the ramp finger until the head is in a load position and then the base structure is actuated in a vertical direction such that the ramp finger is correspondingly actuated in the vertical direction towards the disk until the head is loaded onto the disk.
Dependencies are inferred from the claim text.