The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2009
Filed:
Feb. 28, 2006
Sivadasan Kulangara, Murietta, CA (US);
Sivadasan Kulangara, Murietta, CA (US);
Magnecomp Corporation, Temecula, CA (US);
Abstract
Structures and methods for creating a vertical offset between suspension springs or fingers within a suspension head assembly for use in a disk drive are disclosed, the vertical offset helping to reduce track mis-registration errors. The base plate and load beam may be made from three-layer composite materials that have been etched to create either recesses therein into which the suspension springs ends are placed and then welded, or the base plate and load beam may be etched to create mesas on which the ends of one of the suspension springs are welded. The three layers may comprise stainless steel, polyimide, and stainless steel. In another embodiment, one of the suspension springs is a three-layer material that has been etched to create a raised central portion that is vertically offset from the other suspension spring. In another embodiment, spacers are employed as shims underneath one of the suspension springs. Generally, at least one of a spring extension, the load beam and the mount beam comprise a laminate material.