Method of making at least one suspension load beam for an...

Metal working – Method of mechanical manufacture – Electrical device making

Reexamination Certificate

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C029S603040, C029S603050, C029S603070, C029S603090, C360S240000, C360S244000, C360S244200, C360S244800, C216S065000

Reexamination Certificate

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06938326

ABSTRACT:
A suspension load beam for an actuator assembly of a disk drive includes a bend radius portion with a spring rate that is less than 18 Newtons per meter, a first bending mode that is greater than 3,500 Hertz, and a first torsion mode that is greater than 5,300 Hertz. The method of making this suspension load beam includes cutting a sheet of material to form a flat suspension load beam including a bend radius portion, removing material in the bend radius portion from full thickness, inspecting the bend radius portion to determine its thickness, and removing material from the bend radius portion and/or from the main body of the suspension load beam to compromise the performance difference due to thickness variation in bend radius portion.

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“Development of shock proof suspension [disk drive]”; Tokuyama, M.; Katou, Y.; Shimizu, J.; Hirose, S.; Kojima, Y.; Nishida, H. Magnetics, IEEE Transactions on, vol.: 35, Issue: 5, Sep. 1999; pp. 2484-2486.
Statutory Invention Registration No. H1573, Budde, Richard H., “Reduced Mass/Inertia Suspension,” published Aug. 6, 1996.
Statutory Invention Registration No. H1425, Wolter, Raymond R., “Head Suspension Assembly Having Improved Frequency Response, Accurate Head Positioning and Minimized Flying Variation”, published Apr. 4, 1995.

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