IP Library Granted Patent US 7,874,424
Granted Patent B1
US 7,874,424 · App. 12/685,564 · Granted Jan 25, 2011

Disk pack balancing station

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Quick Facts
Patent No.
US 7,874,424
App. No.
12/685,564
Granted
Jan 25, 2011
Kind
B1
Abstract

A method of balancing a disk pack assembly is disclosed. The disk pack assembly comprises a plurality of components including a plurality of disks coupled to a hub of a spindle motor with at least one disk spacer between the disks. The method comprises the steps of rotating a first biasing arm about a pivot to apply a first biasing force to a first component of the disk pack assembly, and moving a second biasing arm linearly to apply a second biasing force to a second component of the disk pack assembly.

Claims (12)

1. A method of balancing a disk pack assembly, the disk pack assembly comprising a plurality of components including a plurality of disks coupled to a hub of a spindle motor with at least one disk spacer between the disks, the method comprising the steps of:

(a) rotating a first biasing arm about a pivot to apply a first biasing force to a first component of the disk pack assembly; and

(b) moving a second biasing arm linearly to apply a second biasing force to a second component of the disk pack assembly.

2. The method as recited in claim 1 , wherein the first component comprises the at least one disk spacer.

3. The method as recited in claim 1 , wherein the first component comprises at least one of the disks.

4. The method as recited in claim 1 , wherein the second component comprises at least one of the disks.

5. The method as recited in claim 1 , wherein if the disk pack assembly comprises an even number of disks, the first component comprises the at least one disk spacer.

6. The method as recited in claim 1 , wherein if the disk pack assembly comprises an odd number of disks, the first component comprises at least one of the disks.

7. The method as recited in claim 4 , wherein moving the second biasing arm further comprises allowing an abutment of the second biasing arm to rotate about a pivot to apply a second biasing force to the second component.

8. The method as recited in claim 7 , wherein:

the second component comprises at least two of the disks; and

the abutment rotates about the pivot in order to equalize the second biasing force applied to the at least two disks.

Assignments (6)
RELEASE OF SECURITY INTEREST AT REEL 038744 FRAME 0481 Recorded Feb 8, 2022
From: JPMORGAN CHASE BANK, N.A.
To: WESTERN DIGITAL TECHNOLOGIES, INC.
Reel/Frame 058982/0556 →
RELEASE OF SECURITY INTEREST Recorded Mar 5, 2018
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: WESTERN DIGITAL TECHNOLOGIES, INC.
Reel/Frame 045501/0714 →
SECURITY AGREEMENT Recorded May 17, 2016
From: WESTERN DIGITAL TECHNOLOGIES, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 038722/0229 →
SECURITY AGREEMENT Recorded May 17, 2016
From: WESTERN DIGITAL TECHNOLOGIES, INC.
To: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 038744/0281 →
SECURITY AGREEMENT Recorded May 17, 2016
From: WESTERN DIGITAL TECHNOLOGIES, INC.
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 038744/0481 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 11, 2010
From: WESTWOOD, BARNABY BRIAN
To: WESTERN DIGITAL TECHNOLOGIES, INC.
Reel/Frame 023762/0016 →