ELEKTRISCHE KONTAKTVORRICHTUNG.

摘要

A contact tube with slits forms longitudinal webs joining end rings. The slits extend into the rings. The slits may be straight or curved. The edges of the rings may be toothed or slotted to make spring fingers pointing axially parallel away from the ends of the rings. The teeth may be trapezium shaped or triangular. The tube is made from a flat sheet, processed and rolled up.