IP Library Granted Patent US 7,650,686
Granted Patent B2
US 7,650,686 · App. 12/005,962 · Granted Jan 26, 2010

Servo track writer clockhead radius jig

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Quick Facts
Patent No.
US 7,650,686
App. No.
12/005,962
Granted
Jan 26, 2010
Kind
B2
Abstract

A servo track writer (STW) clockhead radius jig is disclosed. One embodiment provides a hard disk drive assembly including a base having a cutaway portion to provide visual access therein. In addition, a disk is mounted in the hard disk drive assembly, this disk having an indicator thereon to indicate a required radius setting for a clockhead.

Claims (17)

1. A method of orienting a servo track writer (STW) clockhead, the method comprising:

positioning a STW clockhead jig comprising a required radius indicator therein over at least a portion of an STW work base comprising a clockhead for writing a clock pattern to a disk in a hard disk drive; and

adjusting the location of the clockhead with respect to the STW clockhead jig to align the clockhead with respect to said required radius indicator.

2. The method of claim 1 further comprising:

utilizing a hard disk drive base assembly with a cutaway portion for a base of said STW clockhead jig, said cutaway portion providing visual access to a disk within said STW clockhead jig.

3. The method of claim 1 further comprising:

utilizing a clear disk within said STW clockhead jig, said clear disk having a marking thereon, said marking indicating the required radius setting for aligning said clockhead.

4. The method of claim 1 further comprising:

utilizing a disk having a clear portion within said STW clockhead jig, said clear portion indicating the required radius setting for aligning said clockhead.

5. The method of claim 1 further comprising:

utilizing a disk within said STW clockhead jig, said disk having a marking thereon, said marking indicating the required radius setting for aligning said clockhead.

6. The method of claim 1 further comprising:

providing a visual magnifying apparatus with said STW clockhead jig.

7. The method of claim 1 further comprising:

providing a manual adjuster for manually adjusting the clockhead alignment with respect to said required radius indicator.

8. The method of claim 1 further comprising:

providing an auto-adjuster for automatically adjusting the clockhead alignment with respect to said required radius indicator.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 6, 2016
From: HGST NETHERLANDS B.V.
To: WESTERN DIGITAL TECHNOLOGIES, INC.
Reel/Frame 040826/0821 →
CHANGE OF NAME Recorded Oct 25, 2012
From: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
To: HGST NETHERLANDS B.V.
Reel/Frame 029341/0777 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 17, 2008
From: QUILAPQUILAP, TEODOSIO
To: HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
Reel/Frame 020379/0605 →