Patent ID: 6956720

Claim:
A head suspension for a disk drive to be attached to a contact face of a carriage arm of the disk drive, comprising: a base plate having a flange and a boss, the flange having a contact face to be attached to the contact face of the carriage arm of the disk drive, the boss being inserted into a hole of the carriage arm and plastically deformed therein to fix the base plate to the carriage arm; a load beam having a rigid part and a resilient part, supported by the base plate, to apply load on a slider arranged at a front end of the load beam; a recess formed on the base plate along a junction of the flange and the boss and between the contact face and the boss, to secure a gap relative to the carriage arm; and a ratio of a radial width of the flange to a radial width of the contact face being 7 to 6.