Signal transmitting device in hard disk drive

Details Signal transmitting device in hard disk drive Signal transmitting device in hard disk drive

1995-10-19

1997-12-02

Renner, Craig A.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 555

Patent

active

056942729

ABSTRACT:
A signal transmitting device, for transmitting a signal between a head and a printed circuit substrate of a hard disk drive having functions of storing and reproducing data to/from a recording medium, least one head for reading or writing data from/to the recording medium, an actuator for positioning the head at a desirable track above the recording medium, a spindle motor for rotating the recording medium at a constant speed, and a pivot bearing provided with one or more slots which are provided with a electrically conductive oil and a plurality of pads connected to the electrically conductive oil. The electrically conductive oil, by being provided within the slot, receives a head signal at ones of the plurality of pads, transmits the head signal from the pads to the electrically conductive oil in the slots, and then the electrically conductive oil therein transmits the head signal to ones of another plurality of pads connected to the electrically conductive oil in the slots to thereby enable transmission of the head signal between the head and the printed circuit substrate of the hard disk drive.

REFERENCES:
patent: 3087038 (1963-04-01), Bethke
patent: 4999724 (1991-03-01), McAllister et al.
patent: 5270887 (1993-12-01), Edwards et al.
patent: 5329412 (1994-07-01), Stefansky
patent: 5454724 (1995-10-01), Kloeppez et al.
patent: 5495377 (1996-02-01), Kim

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