Metal deforming – With cleaning – descaling – or lubrication of work or product – Lubricating
Patent
1998-12-01
2000-03-14
Butler, Ridney A.
Metal deforming
With cleaning, descaling, or lubrication of work or product
Lubricating
72 39, 216100, 216 22, 216102, B21B 4502, B21B 4504
Patent
active
060356812
ABSTRACT:
An etched, lubricated swage ball for use in swaging a head gimbal assembly to an actuator arm in a magnetic disk drive, and a method for making the same. The present invention discloses a lubricating system for swage balls used in a disk drive system which is free from transferrable aluminum oxide, other hard materials or excess solid lubricant which could be deposited on the clean disk surface during operation. The swage balls are first pretreated by cleaning and then etching to remove residual alumina from the surface of the swage balls. The cleaned, etched swage balls are then lubricated in a fluorocarbon lubricating system, thereby producing an etched, lubricated swage ball which is cleaner than that found in the prior art.
REFERENCES:
patent: 3831265 (1974-08-01), Louzon et al.
patent: 4960609 (1990-10-01), Homola et al.
patent: 5100714 (1992-03-01), Zsamboky
patent: 5229899 (1993-07-01), Brown et al.
patent: 5717545 (1996-07-01), Brooks, Jr. et al.
"Lubricant-Stabilizing Structure For Magnetic Disks", IBM Technical Disclosure Bulletin, vol. 28 No. 2, Jul. 1985, pp. 796-797.
Chung Gwendolyn Jones
Nagarajan Ramamurthy
Olson Stephen Arnold Fletcher
Prime Robert Bruce
Ramos Dennis Frederick
Butler Ridney A.
International Business Machines - Corporation
Krall Noreen A.
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