IP Library Granted Patent US 8,339,742
Granted Patent B1
US 8,339,742 · App. 13/310,931 · Granted Dec 25, 2012

Slider with leading edge blend and conformal step features

Assignee: Western Digital (Fremont), LLC
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Quick Facts
Patent No.
US 8,339,742
App. No.
13/310,931
Granted
Dec 25, 2012
Kind
B1
Abstract

A slider having an air bearing surface and a leading face is described. The slider comprises a leading edge blend comprising a first curved surface formed at an intersection of the air bearing surface and the leading face. The slider further comprises at least one step feature having a second surface with a first portion recessed from the air bearing surface and a second portion recessed from and conformal to the first curved surface of the leading edge blend.

Claims (8)

1. A slider having an air bearing surface and a leading face, comprising:

a leading edge blend comprising a first curved surface formed at an intersection of the air bearing surface and the leading face; and

at least one step feature having a second surface with a first portion recessed from the air bearing surface and a second portion recessed from and conformal to the first curved surface of the leading edge blend.

2. The slider of claim 1 , further comprising a carbon overcoat over the leading edge blend.

3. The slider of claim 1 , further comprising a trailing edge blend.

4. The slider of claim 1 , further comprising a blend on at least one side of the slider.

5. The slider of claim 1 , wherein the leading edge blend has a blend penetration distance between a plane of the leading face and a point at which the air bearing surface straightens of around 2.5 microns.

6. The slider of claim 1 , wherein the leading edge blend has a blend depth distance between a primary plane of the air bearing surface and a point at which the leading face straightens of around 0.4 microns.

Assignments (10)
PATENT COLLATERAL AGREEMENT - DDTL LOAN AGREEMENT Recorded Aug 21, 2023
From: WESTERN DIGITAL TECHNOLOGIES, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 067045/0156 →
PATENT COLLATERAL AGREEMENT - A&R LOAN AGREEMENT Recorded Aug 21, 2023
From: WESTERN DIGITAL TECHNOLOGIES, INC.
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 064715/0001 →
RELEASE OF SECURITY INTEREST AT REEL 038710 FRAME 0845 Recorded Feb 8, 2022
From: JPMORGAN CHASE BANK, N.A.
To: WESTERN DIGITAL (FREMONT), LLC; WESTERN DIGITAL TECHNOLOGIES, INC.
Reel/Frame 058965/0445 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 19, 2019
From: WESTERN DIGITAL (FREMONT), LLC
To: WESTERN DIGITAL TECHNOLOGIES, INC.
Reel/Frame 050450/0582 →
RELEASE OF SECURITY INTEREST Recorded Mar 5, 2018
From: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: WESTERN DIGITAL (FREMONT), LLC
Reel/Frame 045501/0158 →
SECURITY AGREEMENT Recorded May 16, 2016
From: WESTERN DIGITAL (FREMONT), LLC
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 038744/0755 →
SECURITY AGREEMENT Recorded May 16, 2016
From: WESTERN DIGITAL (FREMONT), LLC
To: U.S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 038744/0675 →
SECURITY AGREEMENT Recorded May 16, 2016
From: WESTERN DIGITAL (FREMONT), LLC
To: JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT
Reel/Frame 038710/0845 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNOR NAME PREVIOUSLY RECORDED ON REEL 027327 FRAME 0317. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNOR NAME "ITTIPON CHEOWNISH" IS MISSPELLED. THE CORRECT SPELLING IS ITTIPON CHEOWANISH.. Recorded Jan 12, 2012
From: SLADEK, ERIC T.; MORAVEC, MARK D.; HEGDE, HARIHARAKESHAVA S.; CHEOWANISH, ITTIPON
To: WESTERN DIGITAL (FREMONT), LLC
Reel/Frame 027531/0734 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 5, 2011
From: SLADEK, ERIC T.; MORAVEC, MARK D.; HEGDE, HARIHARAKESHAVA S.; CHEOWNISH, ITTIPON
To: WESTERN DIGITAL (FREMONT), LLC
Reel/Frame 027327/0317 →
Continuity (1)
Division 12194344 · Aug 19, 2008