Carl A Carlson

US Patent:

55163238, May 14, 1996

Filed:

Jun 15, 1994

Appl. No.:

8/260029

Inventors:

Carl J. Carlson - Poway CA
Ponna P. Pa - San Diego CA
Jon L. Allen - El Cajon CA

Assignee:

Sunward Technologies, Inc. - San Diego CA

International Classification:

B24B 100

US Classification:

451 28

Abstract:

A method and apparatus for "blending" air bearing rails of a magnetic air bearing slider used to carry a recording mechanism over a magnetic recording medium. In accordance with the present invention, a slider is held at a fixed angle with respect to a at least one essentially flat, abrasive blending surface, preferably configured as an elongated bar having a blending surface. The relative angle of the slider with respect to the plane of the blending surface causes an edge of a slider rail to make contact with the blending surface. A relative motion of the blending surface with respect to the slider in two generally orthogonal directions abrades the edge of the slider rail, generating a contoured edge, or "blend" on the slider rail which allows the slider to fly at approximately the same height over a disk medium over a broad range of skew angles and radial distances.

US Patent:

50087681, Apr 16, 1991

Filed:

Mar 27, 1989

Appl. No.:

7/328869

Inventors:

Carl J. Carlson - Poway CA
Mourad Zarouri - San Diego CA
Warren Coon - Poway CA

Assignee:

Computer & Communications Technology Corp. - San Diego CA

International Classification:

G11B 548

US Classification:

360104

Abstract:

A flexure for supporting a slider/electromagnetic read/write head assembly for a rotary actuator-type disk drive. The flexure is designed to improve yaw stiffness while simultaneously improving pitch and roll compliance compared to prior art designs. The flexure has a forked outrigger structure. Attached at the end of each outrigger arm is a spaced-apart flexure tongue structure. A gimbaling dimple is provided on the tongue structure that is positioned such that when a slider is mounted on the flexure, the dimple is positioned at approximately the center of pressure of the slider. As a result of the inventive design, the position of the gimbaling dimple can be moved substantially forward along the flexure, thereby permitting the use of a notched slider assembly, resulting in an overall decrease in the height of the flexure/slider combination, thereby permitting decreased disk spacing.

US Patent:

51385074, Aug 11, 1992

Filed:

Aug 23, 1990

Appl. No.:

7/572059

Inventors:

Mourad Zarouri - San Diego CA
Carl J. Carlson - Poway CA
Warren Coon - Poway CA

Assignee:

Computer & Communications Technology Corp. - San Diego CA

International Classification:

G11B 548
G11B 2116

US Classification:

360104

Abstract:

A flexure for supporting a slider/electromagnetic read/write head assembly for a rotary actuator-type disk drive. The flexure is designed to improve yaw stiffness while simultaneously improving pitch and roll compliance compared to prior art designs. The flexure has a support structure having a pair of forked outriggers. Attached at the end of each outrigger arm is a spaced-apart flexure tongue structure. The width of the flexure at the connection between the tongue and outriggers is less than the width of the flexure at the connection between the support structure and outriggers. A gimbaling dimple is provided on the tongue structure that is positioned such that when a slider is mounted on the flexure, the dimple is positioned at approximately the center of pressure of the slider. As a result of the inventive design, the position of the gimbaling dimple can be moved substantially forward along the flexure, thereby permitting the use of a notched slider assembly, resulting in an overall decrease in the height of the flexure/slider combination.

US Patent:

50272403, Jun 25, 1991

Filed:

Mar 27, 1989

Appl. No.:

7/328874

Inventors:

Mourad Zarouri - San Diego CA
Carl J. Carlson - Poway CA

Assignee:

Computer & Communications Technology Corp. - San Diego CA

International Classification:

G11B 548

US Classification:

360104

Abstract:

A computer disk head assembly load beam having improved vibrational characteristics. The inventive load beam has reduced mass and increased resonant frequencies for at least the first and second resonant modes in comparison to the prior art, while maintaining a spring rate approximately equivalent to the spring rate of prior art load beams. In addition, the invention exhibits a high degree of torsional stiffness. These characteristics are accomplished by providing a load beam having a delta-shaped forebody, an elongated arm portion, and short, relatively thick spring attachment beams connecting the base of the load beam to the insert-attachment portion of the load beam. The spring attachment beams of the load beam structure provide a spring rate approximately equivalent to the spring rate of prior art load beams. The invention also permits a reduction in the height of the load beam strengthening flanges, permitting decreased disk spacing.

US Patent:

41151852, Sep 19, 1978

Filed:

Aug 5, 1977

Appl. No.:

5/822141

Inventors:

Carl S. Carlson - Costa Mesa CA
Lawrence M. Kinsella - Irvine CA
Daniel L. Pixley - Mira Loma CA

Assignee:

Diceon Electronics, Inc. - Santa Ana CA

International Classification:

C23F 102

US Classification:

156634

Abstract:

A method of thermally dimensionally stabilizing a printed circuit board prior to drilling and chemically processing wherein the printed circuit board has an epoxy fiberglass base and a layer of conductive material bonded to at least one side of the insulating base by transporting the printed circuit board thru a thermal shocking intense heat having a temperature of about 425. degree. F to about 450. degree. F (about 218. degree. C to about 232. degree. C) and a boiling point temperature in excess of 450. degree. F (232. degree. ) for a period of time at least equal to that required to stress relieve the epoxy fiberglass base and promote dimensional movement between the epoxy, fiberglass, and metal conducting layer which the printed circuit board would otherwise experience during the subsequent process steps including the shear displacement between the insulating base and conductive metal layer which would otherwise occur after the selective removal of the conductive metal layer to form conductive metal parts by less than the time required for the conductive metal layer to delaminate from the insulating base is shown.