Michael T Mcghee

US Patent:

6497021, Dec 24, 2002

Filed:

Jan 14, 1999

Appl. No.:

09/231424

Inventors:

Francis Chee-Shuen Lee - San Jose CA
Michael Lee McGhee - San Jose CA
Salvador Navarro - Hollister CA
Ullal Vasant Nayak - San Jose CA
Hang Fai Ngo - San Jose CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

B24B 3900

US Classification:

29 9001, 451290, 451317

Abstract:

A method and apparatus for providing a low cost contact burnish slider is disclosed that can remain in contact or at the initial low flying heights even as the pad surfaces and leading edges wear. The burnish slider includes a body having a leading edge and a trailing edge and an air bearing surface being configured at the leading edge of the body to cut disk asperities as the slider flies and configured away from the leading edge to maintain a flying attitude wherein the leading edge is near the data recording surface and to provide restoring forces to maintain the flying attitude. The air bearing surface may include a front pad proximal to the leading edge and a rear pad distal to the leading edge. Alternatively, the air bearing surface may include two front pads proximal to the leading edge on opposite sides of the body and two rear pads distal to the leading edge and disposed on opposite sides of the body. The front and rear pad(s) extends substantially across the body of the slider.

US Patent:

7116523, Oct 3, 2006

Filed:

Dec 21, 1998

Appl. No.:

09/219195

Inventors:

Francis Chee-Shuen Lee - San Jose CA, US
Michael Lee McGhee - San Jose CA, US
Salvador Navarro - San Jose CA, US
Eric Christian O'Brien - Fremont CA, US
Wing Chun Shum - San Jose CA, US
Randall George Simmons - San Jose CA, US

Assignee:

Hitachi Global Storage Technologies Netherlands B.V. - Amsterdam

International Classification:

G11B 5/48

US Classification:

3602459

Abstract:

A lead routing module for interconnecting two devices in a suspension assembly. The suspension assembly including at least a suspension, a slider/head assembly, and a lead routing module. The suspension assembly may also include a microactuator. The lead routing module routes electrical signals between at least two devices in the suspension assembly such that the termination leads and/or pads of each device may be conveniently located. The suspension assembly may be used in a disk drive system, or alternatively, in a disk test system used for testing disks.

US Patent:

54232074, Jun 13, 1995

Filed:

Dec 27, 1993

Appl. No.:

8/174948

Inventors:

Karl A. Flechsig - Los Gatos CA
Sylvia L. Lee - San Jose CA
Michael L. McGhee - San Jose CA
Ullal V. Nayak - San Jose CA
Timothy C. O'Sullivan - San Jose CA
Josef Walian - San Jose CA

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G01B 528
H01L 41113
H01L 41047
H01L 4118

US Classification:

73104

Abstract:

An enhanced piezoelectric sensor for detecting a predetermined bending mode frequency in the vibrational response of a slider with dimensions smaller than the conventional 100% slider during contact with one or more surface asperities on a recording surface. A method for making the enhanced sensor is also disclosed. The sensor comprises a substantiality rectangular slab of piezoelectric material having a charge response which corresponds to in-plane stress under free boundary conditions. Enhancement is achieved by partitioning an upper conductive layer along the lines of symmetry of the slider's stress distribution, which is related to the piezoelectric material's generated charge. In the preferred embodiment, the conductive layer is partitioned into two electrically isolated regions symmetric about the sensor's lateral axis. The design facilitates the isolation of a high frequency bending component which has been found to be monotonic with increasing surface asperity interference.