Low-profile rotary motor with fixed back iron

Details Low-profile rotary motor with fixed back iron Low-profile rotary motor with fixed back iron

2011-01-25

2011-01-25

Renner, Craig A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head mounting

For shifting head between tracks

Reexamination Certificate

active

07876532

ABSTRACT:
A rotary actuator motor is provided including a stationary coil section and a rotating magnet. The magnet is incorporated with the pivot bearing assembly, and the coil section is aligned with the magnet along an axis of rotation of the actuator. The magnet fully encircles the axis of rotation. The coil comprises one or more closed loops of electrically conductive material. The motor in this arrangement maintains a much smaller profile in comparison to a traditional voice coil motor that is mounted to a yoke extending away from the axis of rotation of the actuator.

REFERENCES:
patent: 4475185 (1984-10-01), Fujio et al.
patent: 4490635 (1984-12-01), Harrison et al.
patent: 4775908 (1988-10-01), Ycas
patent: 5041935 (1991-08-01), Aruga et al.
patent: 5247410 (1993-09-01), Ebihara et al.
patent: 5491598 (1996-02-01), Stricklin et al.
patent: 5557152 (1996-09-01), Gauthier

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