Rotary actuator for disk drive assemblies

Claim 1

A disk drive assembly comprising in combination: an enclosure; a spindle; at least two disks in a stack rotatably mounted on said spindle and having at least one pair of interfacing, spaced apart disk surfaces; a rotatory actuator including at least two transducer heads adapted to fly over said disk surfaces for reading and writing data on said pair of interfacing, spaced apart disk surfaces; said rotary actuator including pivot means for pivotally mounting said rotary actuator and at least one support assembly for holding two of said transducer heads between said pair of interfacing, spaced apart disk surfaces; motor means for pivoting said rotary actuator in order to move said transducer heads across said disk surfaces; said disk drive assembly being characterized by: said support assembly including two integral and one piece beams each having front and back surfaces, a pivot mount structure and an end portion including a head mount region spaced from said pivot mount structure; said beams each including means defining a flexible and resilient hinge region between said head mount region and said pivot mount structure; one of said transducer heads being mounted at said head mount region of each of said beams; and said beams being mounted with said back surfaces facing one another, with said pivot mount structures in engagement with said pivot means and with said end portions spaced apart to permit independent flexing movement of said transducer heads; each of said beams comprising a stamped and formed sheet metal body, said hinge region defining means including an aperture in said body, an upstanding stiffening flange along the periphery of said body, and a gap in said flange adjacent said hinge region.