Tracking device using multiple piezoelectric elements for track

Details Tracking device using multiple piezoelectric elements for track Tracking device using multiple piezoelectric elements for track

1983-01-26

1986-04-15

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360109, 310328, G11B 2110, G11B 2102

Patent

active

045831351

ABSTRACT:
A tracking device comprises a frame having a pair of opposed legs, a magnetic head disposed midway between the pair legs and a pair of piezoelectric members sandwiching the magnetic head and clamped together with the head between the two legs of the frame. Opposite polarity voltages are applied to the piezoelectric members according to tracking information. The applied voltages cause expansion and contraction of the piezoelectric members to effect tracking control of the head.

REFERENCES:
patent: 3526726 (1970-09-01), Corbett et al.
patent: 3808488 (1974-04-01), Massa
patent: 4188645 (1980-02-01), Ragle et al.
patent: 4233637 (1980-11-01), Kubota
patent: 4302830 (1981-11-01), Hamaoka et al.
patent: 4342935 (1982-08-01), Kallmeyer et al.
patent: 4411128 (1984-04-01), Ohba et al.
IBM TDB vol. 15, No. 10, "Closed-Loop Head Positioning Apparatus" Grant et al., Mar. 1973, pp. 3183-3184.

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