Method and apparatus for making a curved surface
First Claim
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1. A METHOD OF UTILIZING A MEMBRANE TO FORM A CURVED SURFACE COMPRISING, DIVIDING A CHAMBER INTO TWO ZONES WITH SAID MEMBRANE, DIRECTING INTO ONE OF SAID ZONES A FLUID UNDER A FIRST HEAD AND INTO CONTACT WITH SUBSTANTIALLY THE ENTIRE SURFACE OF ONE SIDE OF SAID MEMBRANE, DIRECTING INTO THE OTHER OF SAID ZONES A HARDENABLE LIQUID PLASTIC MATERIAL UNDER A SECOND HEAD AND INTO CONTACT WITH SUBSTANTIALLY THE ENTIRE SURFACE OF THE OPPOSITE SIDE OF SAID MEMBRANE, AND HARDENING THE LIQUID PLASTIC MATERIAL.
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1. A METHOD OF UTILIZING A MEMBRANE TO FORM A CURVED SURFACE COMPRISING, DIVIDING A CHAMBER INTO TWO ZONES WITH SAID MEMBRANE, DIRECTING INTO ONE OF SAID ZONES A FLUID UNDER A FIRST HEAD AND INTO CONTACT WITH SUBSTANTIALLY THE ENTIRE SURFACE OF ONE SIDE OF SAID MEMBRANE, DIRECTING INTO THE OTHER OF SAID ZONES A HARDENABLE LIQUID PLASTIC MATERIAL UNDER A SECOND HEAD AND INTO CONTACT WITH SUBSTANTIALLY THE ENTIRE SURFACE OF THE OPPOSITE SIDE OF SAID MEMBRANE, AND HARDENING THE LIQUID PLASTIC MATERIAL.
Specification