Metal working – Method of mechanical manufacture – Electrical device making
Patent
1991-03-18
1993-05-18
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
360122, G11B 542
Patent
active
052109291
ABSTRACT:
An improved slider and magnetic cap assembly which reduces flux loss which retards sensitivity in writing and reading in a magnetic head system. The slider incorporates a body, a partial core, a coil and a cap. The cap is mounted on the upper surface of the body and includes a first and second depending projection corresponding in shape and location to the generally U-shaped partial core so that the mating surfaces of the cap and the partial core mate directly. Another aspect is a similar slider assembly wherein the cap includes a film coil of electrically conductive material deposited around an area which mates with the partial core so that the flow of electrical current will induce magnetic flux through the core. Another aspect is a method of making a magnetic head slider wherein the back bar of a generally rectangular tube is removed and a partial core is sliced from the tube. The partial core is then mounted on a slider body and a pre-wound coil of electrically conductive material is mounted around one of the portions or legs of the partial core. A cap is then mounted on the upper surface of the body so that the cap directly contacts the partial core forming a continuous core. Another aspect is a method of making a magnetic head slider including the depositing of a film coil on the cap around one of the areas which mates with the partial core so that the flow of electrical current through the coil will induce magnetic flux through the core.
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Hanlon Jerry C.
Sherwood David M.
von Huene Marc J.
Applied Magnetics Corporation
Hall Carl E.
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