Metal working – Method of mechanical manufacture – Electrical device making
Patent
1985-01-02
1987-12-08
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
360125, 360127, G11B 542
Patent
active
047110180
ABSTRACT:
A magnetic head core consisting of a plurality of ferrite core elements bonded together into a generally annular core assembly which has a magnetic gap defined by opposed portions of the core elements, and further has at least one inclined groove which is formed in the gap-defining opposed portions in the direction of sliding movement of a recording medium so as to define at least one track which slidably contacts the recording medium moving in the vicinity of the magnetic gap. The inclined groove is inclined in the direction from one of the opposed portions to the other such that a depth thereof at the position of the magnetic gap is greater than the depth of the magnetic gap. The inclined groove is cut after the two core elements are bonded together to form the integral core assembly. Two integral core assemblies may be bonded together into an integral composite core structure, such that the inclined grooves in one of the two core elements are aligned with those in the other core element. The two integral core assemblies are bonded with glass when the inclined grooves are filled with molten glass.
REFERENCES:
patent: 3735052 (1973-05-01), Hoogendoorn
Hall Carl E.
NGK Insulators Ltd.
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