Double action bombin for brake shoes, especially from car vehicles (Machine-translation by Google Translate, not legally binding)

摘要

Double action brake block for brake shoes, especially for motor vehicles, characterized by consisting of a metal cylinder divided internally in two symmetrical chambers or independent of each other, in each of which there is a conical spring that presses on a piston equipped with a head whose attack surface has a conical cavity. (Machine-translation by Google Translate, not legally binding)