Seagate Technology Incorporated

Marten Fredrick Byl

Hans L Leuthold

Norbert Steven Parsoneault

Alan Lyndon Grantz

Robert Michael Pelstring

Klaus Dieter Kloeppel

Raquib Uddin Khan

Alan Lydon Grantz

Roger Allen Addy

Jeffry Arnold LeBlanc

Donald James Macleod

Matt L Shumway

Gary A Treleven

Etoli Wolff

Michael James Whittome

Tan Hung Pham

Robert Alan Notingham

An apparatus and method are provided for sealing an outer surfaceof a shaftto an inner surfaceof a hubThe seal includes a magnetwith top and bottom pole piecesand a ferrofluidmagnetically held in a gapbetween the pole piecesand the hubor the shaftThe top pole piecehas a cross-section that is L-shaped, with a horizontal portionparallel to the magnetand a shorter vertical portionfacing the shaftIn one version, the vertical portionor the portion of the shaftfacing it is contoured to provide a flux gradient that axially concentrates the ferrofluidin the gapIn another aspect, a catcheris provided to reduce loss of ferrofluidwhen the ferrofluidic sealused to form an outside seal. In yet another aspect, a stationary ferrofluidic sealis provided for sealing a stationary shaftto a rotating hub

Apparatus and method for forming a rotatable ferrofluidic seal between a shaft and a hub

Motor with stationary shaft and high speed capillary seal

A method of fabricating a spindle hub assembly (90) including precision machining critical surfaces of the hub components (60, 33) that mount onto a spindle shaft (30) and accurately locate the critical surfaces for positioning of bearing cones (35, 36) on the shaft in spaced relationship of bearing seats (34) on the hub (60, 33) to ensure stable rotation of the hub on the shaft.

Fabrication means for in-hub spindle with separate fluid dynamic bearings

A low-profile in-shaft connector including a female connector (82) and a male connector (90) for electrically connecting a power source to the electrical windings of a motor for rotating a magnetic disc storage system. The female connector (82) includes a sleeve extension (50) that extends down and around the three pins (72, 74, 76) of the female connector and engages the outward sides of the pins in order to prevent lateral deflection of the pins and thereby increase the spring biasing force of the electrical connection between the male and female connector components.

Low profile in-shaft connector

Growing community of inventors

Los Gatos, CA, United States of America

Marten Fredrick Byl