COVER OR BACKGROUND CLOSURE FOR EASY-OPENING BOX SUBJECT TO INTERNAL PRESSURE AND / OR DEPRESSION

摘要

BACKHOE COVER OR CLOSURE FOR EASY-OPEN-PRESSED AND INTERNAL LOW-PRESSURE OPENING BOX. A COVER ACCORDING TO THE INVENTION INCLUDES AN ORIFICE OF PAYMENT AND, PREFERABLY, AN EVENT-LIKE ORIFICE. THIS ORIFICE IS OBTURED BY A CIRCULAR PATTERN 10 LIMITED BY A JOINT ZONE 13, TWO ZONES SECURED, IN THE FORM OF A CIRCLE ARC FROM THE JOINT ZONE, OR PREFERABLY THE THICKNESS OF THE METAL IS REDUCED BY 12 A 34, AND A SECTIONED AREA 15 THAT COMPLETES THE CIRCLE BY CONNECTING THE END OF THE ENTRAPED AREAS. FURTHER, THE PAD IS EXTENDED BY MATRIXING TO SUPPORT THE INNER EDGE OF THE ORIFICE. / P P COMMON APPLICATIONS.