(under subclass 130) Subject matter which includes a plurality of coils, each of the coils being provided with a core which is relatively movable with respect to the coil with which it is associated.
(1) Note. The several coils may or may not be in inductive relation to each other.
170+, 182+, 188, and 220, for the structure of nonadjustable inductive devices having plural windings (e.g., transformers).
SEE OR SEARCH CLASS
333, Wave Transmission Lines and Networks, 24+, for coupling networks including plural coils with plural cores, and particularly subclasses 177+ for transformer coupled wave filters with magnetic core inductance.
334, Tuners,
77, for tuners having variable inductors which are gang operated.
