Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1989-03-27
1991-06-25
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
360103, G11B 548
Patent
active
050272403
ABSTRACT:
A computer disk head assembly load beam having improved vibrational characteristics. The inventive load beam has reduced mass and increased resonant frequencies for at least the first and second resonant modes in comparison to the prior art, while maintaining a spring rate approximately equivalent to the spring rate of prior art load beams. In addition, the invention exhibits a high degree of torsional stiffness. These characteristics are accomplished by providing a load beam having a delta-shaped forebody, an elongated arm portion, and short, relatively thick spring attachment beams connecting the base of the load beam to the insert-attachment portion of the load beam. The spring attachment beams of the load beam structure provide a spring rate approximately equivalent to the spring rate of prior art load beams. The invention also permits a reduction in the height of the load beam strengthening flanges, permitting decreased disk spacing.
REFERENCES:
patent: 3931641 (1976-01-01), Watrous
patent: 4422115 (1983-12-01), Spash
patent: 4853811 (1989-08-01), Brooks, Jr. et al.
IBM/TDB, vol. 31, No. 3, Aug. 1988, pp. 154-155, "Method of Fluxless Termination for Thin Film".
IBM/TDB, vol. 18, No. 11, Apr. 1976, pp. 3813-3814, "Low-Load Beam Suspension", by Watrous.
Carlson Carl J.
Zarouri Mourad
Computer & Communications Technology Corp.
Wolff John H.
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