Side loaded disk drive pivot

Details Side loaded disk drive pivot Side loaded disk drive pivot

1987-05-19

1989-05-30

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 555, G11B 2108

Patent

active

048356441

ABSTRACT:
A mechanism for applying a side-loading force to a ball bearing ring of a hard disc drive pivoting head arm assembly. The head arm assembly has a central shaft with first and second ball bearing rings surrounding the shaft, one ring being above the other. One or more springs bias the upper and lower rings away from each other to apply a vertical loading force. A side loading force is applied to one of the ball bearing rings to further stabilize the head arm assembly. The addition of the side loading force of the present invention gives loading forces in two directions on the ball bearings of the head arm assembly, thus greatly increasing the stability. Not only vertical vibrations are prevented, but also side-to-side or tilting vibrations are prevented as well. The side loading is preferably done with a spring mounted in a recess in the cylinder surrounding the ball bearing rings.

REFERENCES:
patent: 3333753 (1967-08-01), Streets
patent: 3482060 (1969-12-01), Dermond
patent: 4099212 (1978-07-01), Dolby
patent: 4156261 (1979-05-01), Wolf
patent: 4490635 (1984-12-01), Harrison et al.
patent: 4510543 (1985-04-01), Ohta et al.
patent: 4655616 (1987-04-01), Ducan
patent: 4682255 (1987-07-01), Sleger et al.

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