High performance disk drive actuator

Details High performance disk drive actuator High performance disk drive actuator

1980-04-21

1981-09-01

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Linear

H02K 4102

Patent

active

042874459

ABSTRACT:
An electromagnetic linear actuator for positioning a transducer over locations on a rotating magnetic recording disk comprising an actuator housing used as a stationary base for supporting various parts; a coil and cart assembly including a cart, having a rectangular cross section and tubular in construction, adapted at one end to support the transducer, and including a direct current coil with a cross section matching that of the cart mounted at the other end thereof; magnetic means affixed to the actuator housing having an air gap for receiving the coil so that the coil is immersed in a magnetic field; and support means affixed to the actuator housing engaging the surfaces of the cart and disposed about the center of gravity of a moving-mass assembly consisting of the coil and cart assembly and the transducer.

REFERENCES:
patent: 3666977 (1972-05-01), Helms et al.
patent: 3735163 (1973-05-01), Dijkstra et al.
patent: 3746937 (1973-07-01), Koike
patent: 3852626 (1974-12-01), Davis
patent: 4006372 (1977-02-01), Brown, Jr. et al.

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