Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1991-07-17
1993-10-05
Dzierzynski, Paul M.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360 9801, G11B 555
Patent
active
052510859
ABSTRACT:
A pivoting armset assembly is disclosed herein that has substantially reduced misregistration due to thermal effects. The armset assembly is useful for an actuator in a magnetic disk drive; the preferred embodiment is an armset assembly in an actuator for reading from, or writing to, one or more magnetic storage disks. The armset assembly, constructed according to the present invention, includes an armset having a smooth bore aligned with the axis of rotation. The assembly further includes a sleeve having a smooth outer perimeter with a size for an interference fit within the smooth bore. An anti-friction material is positioned between the smooth sleeve and the smooth bore. The assembly also includes a bearing disposed within the sleeve, to pivot the arm about its axis. The coefficient of friction between the bore and sleeve is high enough that they rotate together as a unit throughout their operating temperature range, without creating radial clearance between the arm and the sleeve, but low enough to permit slight axial adjustments during thermal expansion in which the bore expands at a different rate than the sleeve. Preferably, the anti-friction material is disposed on the sleeve, and includes a coating of tungsten disulfide (WS.sub. 2). The coefficient of friction can be selected by a choice of the heaviness of the interference fit, the type of the anti-friction material, and the smoothness of the bore and the sleeve.
REFERENCES:
patent: 4196456 (1980-04-01), Manzke et al.
patent: 4555189 (1985-11-01), Donkin
patent: 4660110 (1987-04-01), Iida et al.
patent: 4682255 (1987-07-01), Sleger et al.
patent: 4691258 (1987-09-01), Kobayashi et al.
patent: 4814908 (1989-03-01), Schmitz et al.
patent: 4860135 (1989-08-01), Cain
patent: 4924337 (1990-05-01), Repphun et al.
patent: 4949194 (1990-08-01), MacPherson et al.
patent: 4969058 (1990-11-01), Williams et al.
patent: 4979062 (1990-12-01), Stefansky et al.
patent: 4980786 (1990-12-01), O'Sullivan et al.
patent: 4992899 (1991-02-01), Kaczeus et al.
patent: 4994931 (1991-02-01), Foote
patent: 5005089 (1991-04-01), Thanos et al.
patent: 5050026 (1991-09-01), Gross
Morris Frank I.
Talbot Robert L.
Wong King L.
Dzierzynski Paul M.
Maxtor Corporation
Nguyen Kiet T.
LandOfFree
Pivotable arm assembly with reduced thermal distortion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pivotable arm assembly with reduced thermal distortion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pivotable arm assembly with reduced thermal distortion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1009125