(under subclass 226) Subject matter wherein the resistance element is flat in shape, as in a planar zigzag resistance
element or a helical resistance element wound on a flat ribbon, and wherein the casing or housing is formed as two flat preformed layers, the resistance element being disposed between and substantially enclosed by the layers.
(1) Note. Usually additional structure is provided as bolts, screws, or clamps for securing the layers together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
212, for flexible or folding resistors formed as tapes or sheets.
249, for a resistor which is embedded in insulative material surrounded by a plural part metallic sheath formed of flat sheets.
268, for a helical or wound resistor whose element is coiled on a core, with a preformed sleeve surrounding the element.
