(under subclass 283) Subject matter wherein the elongated portions of the zigzag or sinusoidal element include integral structure, which includes a particular shape, such as a rib or channel, to reduce any tendency of the elongated portion to bend.
SEE OR SEARCH THIS CLASS, SUBCLASS:
281, for zigzag resistors formed as a continuous bent ribbon of uniform cross-section and including a stiffening bend.
291, for a zigzag or sinuous resistor with a transverse element stiffening or reinforcing rod or strip.