.~ Wound to reduce external magnetic field (i.e., fieldless winding)
DEFINITION
Classification: 336/181
(under subclass 180) Subject matter in which the coils of the winding are so positioned, constructed and connected that the resultant external magnetic field set up, when current is caused to flow in each of the coils, is substantially reduced or cancelled (i.e., so-called "fieldless" coils).
SEE OR SEARCH THIS CLASS, SUBCLASS:
83, for inductors completely enclosed by a core.
84, for inductors with electric and/or magnetic shielding means.
189+, for coils with crossed turns, which may be wound to
reduce external fields.
225+, for coils of special configuration some of whose shapes may be of significance in reducing external fields, particularly subclass 229, toroidal coils, indented thereunder which are known to reduce external fields.
