(under subclass 226) Subject matter wherein the casing or housing is formed as a coating.
(1) Note. A casing or housing formed as a coating in this subclass is usually a thin layer or uniform thickness, the external shape of the coating being similar to the shape of the surface covered. While a casing or housing formed and hardened on the resistor such as molded, in subclass 275 below, usually involves a relatively thick covering, whose external surface has a shape distinct from the resistance covered, as produced by a mold. In this subclass impregnating is considered to constitute a coating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
244, for resistors whose element is in insulation with an
outer metallic sheath, the insulation being coated on a conducting liner.
257, for a incased, embedded or housed resistor, whose casing or housing is formed in plural layers external to the resistance element, one layer being formed as a coating.
269, and 275, for a resistor, with a casing or housing formed and hardened on the resistance element, such as molded. See also (1) Note above. 308+, for resistors generally whose elements are coated on a base.
SEE OR SEARCH CLASS
29, Metal Working,
613+, for methods of enveloping or housing resistors including metal working or assembly steps not otherwise classifiable together with a coating step; and subclasses 194+ for stock material of metal with a metallic coating.
428, Stock Material or Miscellaneous Articles, appropriate subclasses for a plural layer product comprising a coating or a base or substrate, and involving resistance material, note especially
411+, for a nonstructural plural layer product in which only compositions of the layers are claimed.
