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Priority to ES1973191439UpriorityCriticalpatent/ES191439Y/en
Publication of ES191439UpublicationCriticalpatent/ES191439U/en
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Publication of ES191439YpublicationCriticalpatent/ES191439Y/en
Self-Closing Valves And Venting Or Aerating Valves
(AREA)
Abstract
Air valve, characterized by being constituted of two unitary bodies, one superior and; another lower one, the latter being of cylindrical configuration and provided with a concentric circular exterior projection located in height in the vicinity of the middle zone, dividing the body externally in two zones, a superior and configurative upper part of vertical curved and convex rectangular recesses interior, distributed regularly around its circumference, and another lower end of lower height than the immediate upper one, said upper body of the valve being internally provided:: from a central hole from its upper base, which hole is partially threaded and ended in a lower conical throttle which in turn also communicates inferiorly with another exit orifice to the outside and through the lower base of the body, exit orifice that internally forms a concentric cylindrical zone provided with a central orifice and joined to the vertical walls of the carrier hole through which tro salients located in cross and trapezoidal configuration. (Machine-translation by Google Translate, not legally binding)
ES1973191439U1973-05-121973-05-12
AIR VALVE.
ExpiredES191439Y
(en)
Catalysts for hydrogenation of acetylene and oxides of nitrogen, their production process and process for the catalytic hydrogenation of acetylene and oxides of nitrogen
Improvements introduced in the device for fixing the rolling elements of bodies or mobile devices. (Machine-translation by Google Translate, not legally binding)