(under subclass 115) Subject matter wherein one of the coils is provided with a core.
(1) Note. The core may extend through the fixed and movable coil (e.g., the movable coil may slide along the core), or one coil may be provided with a core fixed in relation thereto and the other coil may be relatively movable with respect to the fixed coil and core, or each coil may be mounted on respective complementary portions of a two part core.
40+, for adjustable inductor devices having relatively movable coils and a core where the movement of the movable core is effected by the change in magnetic force between the two coils (e.g., constant current devices).
130+, where the inductor device has a core movable with respect to one or more coils. 333, Wave Transmission Lines and Networks, subclasses 177+ for transformer coupled wave filters with magnetic core inductances.
