Improvements in hermetic devices, particularly for the collar of metals and alloys. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in hermetic devices, particularly for the casting of metals and alloys, which guarantee the tightness of joint joints, such as joints of ball joints in the casting of metals or other liquid or viscous products at high temperature, characterized by they are constituted by at least one hollow sleeve, which surrounds the joint with its joint and runs internally by a cooling fluid. (Machine-translation by Google Translate, not legally binding)