(under subclass 125) Subject matter wherein the stationary coil has a tubular shape.
(1) Note. A tubular coil is a coil having a rectilinear coil axis and having its windings extending along the coil axis for a distance usually greater than the cross-sectional dimensions (e.g., the diameter in the case of round tubular coils) of the coil. The cross-sectional shape or area usually is uniform along the coil axis. The cross-sectional shape may be circular, oval, square, polygonal or the like. Coils of spherical, toroidal, or pancake form, for example, are not considered to be tubular coils for this subclass.
(2) Note. An illustrative example is: [figure]
SEE OR SEARCH THIS CLASS, SUBCLASS:
199+, for the structure of coils on a form and especially subclass 208 for coil forms.
225+, for the structure of coils having a special configuration.
