Stiffening arm mass damper for a disc drive

Details Stiffening arm mass damper for a disc drive Stiffening arm mass damper for a disc drive

1998-04-30

2000-07-18

Korzuch, William R.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 548, G11B 2116

Patent

active

060915749

ABSTRACT:
An apparatus for changing the mechanical response characteristics of an actuator arm in a disc drive such that damage to the disc drive resulting from mechanical shock is prevented or minimized. An actuator arm is provided with a lightening hole in which is supported a stiffening arm mass damper and a retaining filler. The stiffening arm mass damper can be made of a stiffening material or a damping material as desired, such as a metallic cylindrical member, to change the mechanical response characteristics of the actuator arm to reduce contact between the actuator arm and the disc surface resulting from mechanical shock to the disc drive. The filler is preferably a moldable elastomeric material that substantially encapsulates the stiffening arm mass damper within the lightening hole.

REFERENCES:
patent: 4819094 (1989-04-01), Oberg
patent: 5299081 (1994-03-01), Hatch et al.
patent: 5404636 (1995-04-01), Stefansky et al.
patent: 5461525 (1995-10-01), Christianson et al.
patent: 5801905 (1998-09-01), Schirle et al.
patent: 5812342 (1998-09-01), Khan et al.
patent: 5825590 (1998-10-01), Ohwe
patent: 5850319 (1998-12-01), Tangren

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