Seagate Technology Incorporated

Other

Nidec Corporation

Timothy Edward Langlais

Troy Michael Herndon

Paco Gregor Flores

Matthew M McConnell

Wolfgang Rosner

Chris Michael Woldemar

Joseph H Sassine

Hany Michael Gross

Hans L Leuthold

Norbert Steven Parsoneault

Junya Mizukami

Frank William Bernett

Takuro Iguchi

Daniel Dennis Dittmer

David Gerard Wobbe

Hiroki Yamada

Tsuyoshi Morita

Tetsuya Maruyama

Scott Douglas Ulrich

Gary Gang Jing

Ju-Il Lee

Chiyun Xia

Yi Q Lin

Dale E Kukacka

ReAnn Dargus Robelia

An apparatus is provided, including a base-deck floor; a base-deck frame, overlying the base-deck floor; a top cover, overlying the base-deck frame; and an affixing means operable to attach the base-deck frame to the base-deck floor, wherein the base-deck frame is operable to be fastened to both the base-deck floor and the top cover to provide a housing for a hard disk drive. A method is also provided, including assembling at least a portion of a hard disk drive assembly on a base-deck floor; affixing a base-deck frame to the base-deck floor; and securing a top cover to the base-deck frame.

Multipiece deck for hard disk drive

An apparatus includes a first component and a second component. The second component is located at a first position. The second component includes a first connection to the first component. The first position and the first connection are configured to stiffen an electric motor assembly.

Component configured to stiffen an electric motor assembly

A fluid seal for sealing a gap region for rolling elements rotationally connecting a shaft and an outer structure of a rotating assembly. In embodiments described, the fluid seal includes an inner capillary seal and an outer capillary seal radially and axially spaced from the inner capillary seal. The inner and outer capillary seals are formed along a passageway having an axial portion and a radial portion formed along capillary surfaces of a fluid seal structure and opposed transverse and upright surfaces. In embodiments disclosed, the fluid seal structure includes a seal ring and cap or a seal plate structure. In another embodiment, a flange portion of the shaft forms the fluid seal structure.

Fluid seal for a rotating assembly

A method includes rotating a first motor part around a first structure substantially similar to a second motor part. The method also includes applying a first current to the first structure to electro-chemically machine the first motor part.

Electro-chemically machining with a motor part including an electrode

Provided herein is an apparatus, including a spinstand configured to position a disk in a testing orientation and a motor coupled to the spinstand, configured to rotate the disk. The motor comprises a fluid dynamic bearing.

Spinstand with motor having fluid dynamic bearing

An apparatus includes a fluid dynamic bearing and means for dynamically adjusting the stiffness or damping of the fluid dynamic bearing.

Dynamically adjustable fluid dynamic bearing stiffness

In certain embodiments, a method includes sensing a mode of a motor-base assembly's response to vibration. Based on the sensed response, the method includes adjusting a head-suspension assembly to compensate for off-track motion caused by the vibration. In certain embodiments, an apparatus includes a sensor positioned on a basedeck such that the sensor senses a mode of the motor-base assembly's response to linear vibration.

Methods and devices for compensating for off-track motion

A fluid dynamic bearing apparatus includes a first minute gap, a second minute gap, a third minute gap, a fourth minute gap, and a fifth minute gap. A flow of a lubricating oil from the fifth minute gap to the fourth minute gap is caused by a plurality of dynamic pressure generating grooves arranged within the fluid dynamic bearing apparatus. This flow causes air bubbles mixed in the lubricating oil within the fifth minute gap to flow toward the third minute gap and be discharged to an outside of the fluid dynamic bearing apparatus through the third minute gap. The fluid dynamic bearing apparatus further includes a plurality of dynamic pressure generating grooves and an annular groove.

Fluid dynamic bearing apparatus with specific minute gap structure with spindle motor and disk drive apparatus including same

A thermally compensated fluid dynamic bearing motor includes a stationary member and a rotatable member rotatable about the stationary member. A hub is coupled with the rotatable member and includes ceramic material with a first coefficient of thermal expansion, wherein the hub is operable to be coupled with a data storage disk. Further the first coefficient of thermal expansion is substantially equal to a second coefficient of thermal expansion of the data storage disk.

Matched CTE drive

A method of performing predictive failure analysis (PFA) for a disc drive includes maintaining at least two primary error counts during operation of the disc drive. The primary error counts each correspond to disc drive errors associated with different attributes of the disc drive and are potentially indicative of disc drive failure. Imminent disc drive failure is predicted based upon a combination of the primary error counts.

Growing community of inventors

Minneapolis, MN, United States of America

Timothy Edward Langlais