Low inertia Winchester disk drive actuator

Details Low inertia Winchester disk drive actuator Low inertia Winchester disk drive actuator

1991-08-16

1993-12-07

Dzierzynski, Paul M.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 75, 360104, G11B 555

Patent

active

052688054

ABSTRACT:
The head positioner for a Winchester type hard disk drive digital storage system includes a main rotating metal body portion made of magnesium or other lightweight metal and having outwardly extending, integral, head positioning arms. The shape of the arms is such that the rotary moment of inertia is minimized while maintaining high resistance to vertical and in-plane bending, torsional twisting and shock, which cause the head to move off track. The integral arms are tapered in a curved fashion having an inner base portion and an outer narrower end to which a load beam and a magnetic head are secured. Three openings are provided in each of the integral arms, including a generally arch shaped opening adjacent the base of each arm and two outer generally oval openings tapering down in their transverse dimensions generally corresponding to the tapering of the arms.

REFERENCES:
patent: 4716478 (1987-11-01), Walsh et al.
patent: 4843503 (1989-06-01), Hazebrouck et al.
patent: 4949194 (1990-08-01), MacPherson et al.
patent: 5014146 (1991-05-01), Takatsuka et al.
patent: 5119537 (1992-06-01), Hamanaka et al.
patent: 5126904 (1992-06-01), Sakurai
patent: 5161077 (1992-11-01), Jabbari

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