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US 4,378,247 AGranted
Method of making sintered powdered aluminum inductor cores
AssigneePermacor Altair, Inc.
InventorPeter A. Tsoutsas
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Abstract
A sintered powdered aluminum core for an inductor used in the tuning stages of high frequency equipment is disclosed. Such cores have threads ground on them having sharp thread profiles, as opposed to the flat thread profiles produced by screw machines, and plating the cores produces superior electrical properties.
Claims4
A method of making an inductor core comprising
- pressing a cylinder of powdered aluminum
- sintering the cylinder and
- grinding thread projections on the outside surface of the cylinder.
Dependencies are inferred from the claim text.