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Method of making pressure vessels

  • US 3,240,644 A
  • Filed: 11/02/1962
  • Issued: 03/15/1966
  • Est. Priority Date: 11/02/1962
  • Status: Expired due to Term
First Claim
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1. THE METHOD OF FABRICATING VESSELS FOR STORING FLUID UNDER PRESSURE WHICH METHOD COMPRISES APPLYING A HOOP WINDING UNDER SUFFICIENT TENSION A PLURALITY OF LAYERS OF RESIN COATED HIGH TENSILE STRENGTH CONTINUOUS FILAMENTS ON A CYLINDRICAL WALL SECTION OF A SHELL FORMED OF HIGH STRENGTH, DUCTILE METAL TO ESTABLISH A PRECEPTABLE PRESTRESS IN THE CYLINDRICAL WALL SECTION, THE SHELL HAVING END WALLS ONE OF WHICH IS PROVIDED WITH AN OPENING FOR INTRODUCTION AND DISCHARGING FLUID UNDER PRESURE;

  • CURING THE RESIN TO PROVIDE A PERMANENT FILAMENT RESIN LAMINATE ON THE CYLINDRICAL WALL SECTION;

    AND THEREAFTER SUBJECTING THE INTERIOR OF THE SHELL TO FLUID PRESSURE AT A VALUE AND FOR A SUFFICIENT DURATION OF TIME TO EXPAND THE SHELL AND CAUSE THE YIELD STRENGTH TO APPROACH THE ULTIMATE TENSILE STRENGTH OF THE METAL PROVIDING THE CYLINDRICAL SECTION TO THEREBY ESTABLISH A FURTHER PRECEPTABLE PRE-STRESS IN THE CYLINDRICAL WALL SECTION.

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