Intermediate product assembly of a magnetic head

Details Intermediate product assembly of a magnetic head Intermediate product assembly of a magnetic head

1974-03-11

1976-05-04

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

51281R, G11B 522, E05F 1102

Patent

active

039552136

ABSTRACT:
A head is moved toward and rotated against an abrasive while its resistance is monitored by a four-lead bridge. Prior to final manufacture, the head includes a highly conductive segment which surrounds the active head element on three sides and is electrically connected to it at one point. The segment is ground away during manufacture. Two leads from the head are connected to two slip rings, and each slip ring has two pairs of brushes, each wire from the bridge going to a different brush pair. Head movement toward the abrasive is terminated when a predetermined head resistance is detected by the bridge.

REFERENCES:
patent: 3787638 (1974-01-01), Murai
patent: 3821815 (1974-06-01), Abbott et al.

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