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United States Patent | 3,582,572 |
Camras | June 1, 1971 |
A microgap magnetic transducer head having a core formed of a binary alloy of silicon and iron (preferably from about 3 percent to 7 percent silicon) provides a sharply defined gap of a thickness not more than about one micron, and makes possible a higher magnetic flux saturation density as well as superior wearing qualities as compared with prior magnetic heads, especially for use in a longitudinal scan video transducer system. Advantageous oriented core configurations and core mounting means are also disclosed.
Inventors: | Camras; Marvin (Glencoe, IL) |
Assignee: |
IIT Corporation
(Chicago,
IL)
|
Appl. No.: | 04/746,651 |
Filed: | July 22, 1968 |
Current U.S. Class: | 360/119.01 ; 29/603.08; 360/125.01; G9B/5.04 |
Current International Class: | G11B 5/127 (20060101); G11b 005/16 (); G11b 005/42 (); H01f 001/14 () |
Field of Search: | 179/1.2C 340/174.1F 346/74MC 336/218 |
1809197 | June 1931 | Fendrich, Jr. |
2489977 | November 1949 | Porter |
2694754 | November 1954 | Connell |
2991511 | July 1961 | Kornei |
3311711 | March 1967 | Maryatt et al. |
"Magnetic Materials In The Electrical Industry," by P. R. Bardell, Copyright 1960, Published by MacDonald & Co. (Publishers) Ltd., London, pp. 108--109.. |