Jason Matthew Zimmerman

US Patent:

6900968, May 31, 2005

Filed:

Jan 2, 2002

Appl. No.:

10/039011

Inventors:

Lon Richard Buske - Apple Valley MN, US
Rodney Dale Dahlenburg - Minneapolis MN, US
Joel Daniel Phillips - Burnsville MN, US
William John Raphael - Mustang OK, US
Thomas Henry Sexton - Maple Grove MN, US
Mark August Toffle - St. Louis Park MI, US
Brent Melvin Weichelt - Burnsville MN, US
Jason Paul Zimmerman - Faribault MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B005/55

US Classification:

3602652, 3602645

Abstract:

Apparatus and method for orienting a head over a disc within a multi-disc servo-track writer preferably uses two gas bearings, an adaptor plate, and an actuator assembly including an E-block and arm/head assembly. Rotation of the E-block, and hence actuator arm/head assembly, can be controlled by the movement of a rotational gas bearing, which is rotated by a motor. The gas bearing provides for reduced friction and, as a result, decreased eccentricity of the head as compared to related art configurations. A translational gas bearing can be used for laterally positioning the actuator assembly for servo track recording.

US Patent:

7116524, Oct 3, 2006

Filed:

Jan 13, 2004

Appl. No.:

10/756877

Inventors:

Lon Richard Buske - Apple Valley MN, US
Rodney Dale Dahlenburg - Minneapolis MN, US
Joel Daniel Phillips - Burnsville MN, US
William John Raphael - Mustang OK, US
Thomas Henry Sexton - Maple Grove MN, US
Mark August Toffle - St. Louis Park MN, US
Brent Melvin Weichelt - Burnsville MN, US
Jason Paul Zimmerman - Faribault MN, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 5/55

US Classification:

3602652

Abstract:

An actuator assembly and method for orienting a head over a disc within a multi-disc servo-track writer incorporates an actuator block, rotational air bearing, translational air bearing, adaptor plate, E-block and actuator arm/head assembly. Rotation of the E-block, and hence actuator arm/head assembly, is directly controlled by the movement of the rotational air bearing, which is rotated by a motor. The air bearing provides for reduced friction and, as a result, decreased eccentricity of the head as compared to related art configurations. A translational air bearing laterally positions the actuator assembly within the multi-disc servo-track writer for servo-track recording.

US Patent:

20030039055, Feb 27, 2003

Filed:

May 20, 2002

Appl. No.:

10/151493

Inventors:

John Runyon - St. Paul MN, US
Mark Toffle - St. Louis Park MN, US
Brent Weichelt - Burnsville MN, US
Jason Zimmerman - Savage MN, US

International Classification:

G11B005/596
G11B021/02

US Classification:

360/078110, 360/075000

Abstract:

A method and apparatus for transducer position detection uses inert contact surfaces to engage an actuator temporarily. The inert contact surfaces are part of an apparatus that also includes an optical sensor such as a retroreflector or diffraction grating. The assembly is thus configured to permit multiple uses while exerting a near-zero net torque about the length of the arm that supports the transducer. This is useful where there is a temporary need for especially precise position control, such as when servowriting a data storage media surface.