Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-11-18
1988-11-22
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
22826314, 360120, G11B 542
Patent
active
047855266
ABSTRACT:
A magnetic head comprising first and second magnetic core halves held in abutment against each other and a gap-defining spacer interposed therebetween, and having an elongated tape-contact surface extending across said gap-defining spacer. The gap-defining spacer has the same crystal structure as that of said first and second core halves and is made of a non-magnetic material including the same principal component as those of said first and second cores halves. The gap-defining spacer is welded to said first and second core halves in accordance with a solid-phase welding method based on a solid-phase reaction.
REFERENCES:
patent: 3188400 (1965-06-01), Vilensky
patent: 3479738 (1969-11-01), Hanak
patent: 3639701 (1972-02-01), Secrist et al.
patent: 4017966 (1977-04-01), Movell et al.
patent: 4361860 (1982-11-01), Nozawa
patent: 4675988 (1987-06-01), Matsuzawa
O.-A. Neumuller; Basis Rompp, Taschenlexikon der Chemie, ihrer Randgebiete und Hilfswissenschaften; 1st edition, vol. 2 M-Z; Stuttgart 1977, Frankh'sche Verlagshandlung; p. 581.
"Cation Diffusion Coefficients and Vacancy Densities in Mn-Zn Ferrites", by Seiya Ogawa and Yasuaki Nakagawa Journal of the Physical Society of Japan, vol. 23, No. 2, Aug. 1967, pp. 179-184.
Hall Carl E.
Victor Company of Japan Ltd.
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