# US 7,609,486 B1 · Disk drive including a post attached to a disk drive base and a cover for limiting rotation of an actuator

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- Number: US 7,609,486 B1
- Document ID: US7609486B1
- Status: Granted
- Kind: B1
- Application number: 11/113,897
- Filed: 2005-04-25
- Granted: 2009-10-27
- Earliest claimed: 2005-04-25
- Assignees: Western Digital Technologies, Inc.
- Inventors: Aaron D. Little
- Web page: https://patentgrep.com/patent/US7609486B1

## CPC

- G11B 25/043: {using rotating discs}
- G11B 5/5569: {details of specially adapted mobile parts, e.g. electromechanical control devices (motors in general H02K)}
- G11B 33/12: Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)

## Abstract

A disk drive includes a disk drive base. The disk drive further includes a cover. The disk drive further includes a rotary actuator rotably coupled to the disk drive base and the cover. The rotary actuator is disposed between the disk drive base and the cover. The disk drive further includes a post attached to the disk drive base. The post is positioned to limit a pivot arc of the rotary actuator in at least one direction of rotation. The post includes a post distal end extending away from the disk drive base and attached to the cover.

## Claims

### Claim 1

A disk drive comprising:
a disk drive base;
a disk rotably coupled to the disk drive base;
a cover attached to the disk drive base and overlying the disk, the cover and the disk drive base housing the disk;
a rotary actuator rotably coupled to the disk drive base and the cover, the rotary actuator being disposed between the disk drive base and the cover; and
a post attached to the disk drive base, the post being positioned to limit a pivot arc of the rotary actuator in at least one direction of rotation, the post including a post distal end extending away from the disk drive base and attached to the cover.

### Claim 2 (depends on 1)

The disk drive of claim 1 wherein the post distal end includes a post threaded portion, the disk drive further includes a post screw engaged with the post threaded portion through the cover for attaching the post distal end to the cover.

### Claim 3 (depends on 1)

The disk drive of claim 1 wherein the post includes a post base end disposed opposite the post distal end, the post base end is press-fit engaged with the disk drive base.

### Claim 4 (depends on 1)

The disk drive of claim 1 wherein the post is formed of a metal material.

### Claim 5 (depends on 4)

The disk drive of claim 4 wherein the post is formed of stainless steel.

### Claim 6 (depends on 1)

The disk drive of claim 1 further includes a post pad attached to the post between the rotary actuator and the post, the post pad has a hardness less than a hardness of the post.

### Claim 7 (depends on 6)

The disk drive of claim 6 wherein the post pad is formed of rubber.

### Claim 8 (depends on 6)

The disk drive of claim 6 wherein the post pad is disposed about the post.

### Claim 9 (depends on 1)

The disk drive of claim 1 wherein the rotary actuator includes a pivot bearing cartridge with a pivot shaft, the pivot shaft includes a shaft distal end extending away from the disk drive base and attached to the cover.

### Claim 10 (depends on 9)

The disk drive of claim 9 wherein the shaft distal end includes a shaft threaded portion, the disk drive further includes a shaft screw engaged to the shaft threaded portion through the cover for attaching the shaft distal end to the cover.

### Claim 11 (depends on 1)

The disk drive of claim 1 wherein the rotary actuator includes a coil support, the post is positioned to contact the coil support upon rotation of the rotary actuator in at least one direction to limit the pivot arc of the rotary actuator in at least one direction of rotation.