(under the class definition) Inductor devices wherein the core is built up of elements of directionally prestressed material so arranged as to exhibit desired directional magnetic and/or electric properties. Usually the desired directional property is produced by taking advantage of the anisotropy of the crystal structure of the magnetic material
by rolling and then heating to orient the grain structure, the permeability of the resultant product being a maximum in the direction of rolling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
20, for inductors wherein a change in inductance is effected by physically distorting the core.
SEE OR SEARCH CLASS
29, Metal Working, especially
607+, for the process of manufacture, assembly or disassembly of inductor cores in general, and indented subclass 609 for laminated cores in particular, which cores may include grain oriented magnet material. 148, Metal Treatment,
100+, for processes of altering the internal structure of metalliferous materials to influence their magnetic properties, particularly subclass 104 relating to the production of dust cores, and subclasses 300+ for magnetic stock resulting from such processes.
428, Stock Material or Miscellaneous Articles,
554+, for stock material or intermediate articles which are all metal or have adjacent metal components, particularly subclasses 615+ for metallic composites defined in terms of the composition of their components, and subclass 928 for metallic stock having magnetic properties.
