Magnetic transducer head having an integral magnetic shield and

Details Magnetic transducer head having an integral magnetic shield and Magnetic transducer head having an integral magnetic shield and

1974-11-27

1976-02-10

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Miscellaneous

360121, 360128, G11B 522, G11B 528, G11B 5115

Patent

active

039381935

ABSTRACT:
Described is a magnetic transducer head assembly provided with a wear indicator to produce an indication when the head wear has proceeded to a predetermined point. For this purpose, the magnetic shield of the head includes a portion aligned with the pole faces of the head and which portion is subject to wear with the pole faces, such that the electrical continuity of the magnetic shield is interrupted upon the occurrence of a predetermined amount of wear of the pole faces. The magnetic shield further includes terminals for connection to an electrical device to test the electrical continuity of the shield portion, and thereby to provide an indication of the occurrence of the predetermined amount of wear.

REFERENCES:
patent: 2717928 (1955-09-01), Nordyke
patent: 2769036 (1956-10-01), Selsted
patent: 3486220 (1969-12-01), Braun et al.
patent: 3495049 (1970-02-01), Humphreys et al.

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