Patent ID: 7359157

Claim:
A head suspension for a disk drive, comprising: support plate means fitted to and supported by a support of a carriage in the disk drive, the support plate means serving as a carriage arm of the carriage; and a load beam resiliently supported by the support plate means comprising a rigid part and a resilient part, the load beam adapted for applying load onto a slider of a head, wherein: the support plate means comprising at least of layered first and second plates, the first plate being thinner than the second plate; a pivot hole to be fitted to and supported by the support of the carriage is formed through the first plate with the size and shape of the pivot hole being the same as those of a cross section of the support of the carriage where the pivot hole is fitted to, the pivot hole extending from a first face of the first plate to an opposing second face; a loose hole formed through the second plate, the loose hole being larger than and substantially concentric with the pivot hole of the first plate; and the second plate consists of a resin layer and a metal layer, the resin layer interposing between the first plate and the metal layer, to provide a three-layer structure for the support plate means.