Magnetic head feed mechanism including a dust preventing means

Details Magnetic head feed mechanism including a dust preventing means Magnetic head feed mechanism including a dust preventing means

1986-04-29

1988-05-03

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 90, G11B 555, G11B 2108

Patent

active

047424117

ABSTRACT:
A magnetic head feed device for feeding a magnetic head for recording information on a magnetic recording disk and/or reproducing information from the magnetic recording disk in a radial direction of the magnetic recording disk includes a driving force source which outputs a driving force for feeding the magnetic head as a rotational motion thereof, a rotational motion-linear motion converting mechanism for converting the rotational motion of the driving force source into a linear motion of the magnetic head. The rotational motion-linear motion converting mechanism includes a spur gear to be rotated upon rotation of the driving force source, a shaft portion which is coaxially connected to the spur gear to be rotated together therewith and is provided with an enlarged diameter portion having a male thread portion formed on the outer surface thereof, a female screw unit having an elongated passage through which the shaft portion extends and which is longer than the enlarged diameter portion of the shaft portion, the female screw unit being fixedly mounted and provided with a female thread portion into which the male thread portion of the shaft portion is screwed, and a pair of lid members which are mounted on the respective ends of the passage to close the passage and are provided with circular central openings through which the shaft portion extends into the passage and projects therefrom so that the enlarged diameter portion is positioned between the lid members.

REFERENCES:
patent: 3593332 (1971-07-01), Strehl
patent: 4410922 (1983-10-01), Babow et al.
patent: 4531846 (1985-07-01), Raj
patent: 4649306 (1987-03-01), Yamashita

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