Patent ID: 6633456
Filing Date: 2003-10-14
Classification: G11B

Abstract:
A suspension, comprising:an arm having a pair of side edges and a mounting portion, the arm being substantially planar such that it extends in and defines a longitudinal direction; a head slider mounted to the mounting portion of the arm; a rib extending in the longitudinal direction from each of the side edges of the arm to define a pair of ribs, the ribs being formed in substantially planar orientations at angles with respect to the arm to define transverse directions, thereby providing stiffness for the arm, and each of the ribs having a thickness and an area; a plurality of openings formed in each of the ribs, each of the openings having a longitudinal dimension, a transverse dimension, and an area, such that both of the longitudinal dimension is equal to or greater than the thickness of the ribs; and wherein the ribs have an opening ratio defined as a sum total of the areas of the openings over the areas of the ribs, the opening ratio being in a range of 10% to 50%.