Methods of making flexible diaphragms for use in fluid springs

Claim 1

IN A METHOD OF MAKING A GENERALLY TUBULAR, FLEXIBLE, FLUID-SPRING DIAPHRAGM HAVING A LARGER END AND A SMALLER END BY SUPERPOSING AND ADHERING TWO PILES OF CORD FABRIC FORMED OF RELATIVELY INEXTENSIBLE CORD ELEMENTS COATED WITH A FLEXIBLE FLUID-IMPERMEABLE COMPOSITION, EACH OF THE CORD ELEMENTS OF EACH PLY EXTENDING FROM ONE END OF SAID DIAPHRAGM TO THE OTHER WITH THE CORD ELEMENTS OF ONE PLY CROSSING THOSE OF THE OTHER PLY AT AN INCLUDED ANGLE OF BETWEEN 30* AND 150* AND AT A CORD ANGLE OF BETWEEN 15* AND 75*, THE IMPROVEMENT COMPRISING THE STEPS OF FORMING ONE SINGLE-PLY CYLINDRICAL UNIT FROM A SINGLE STRIP OF SAID CORD FABRIC WITH THE CORD ELEMENTS OF SAID FABRIC DISPOSED AT A SUBSTANTIALLY CONSTANT CORD ANGLE OF BETWEEN 15* AND 75*, EXPANDING A FIRST END PORTION OF THE CYLINDRICAL UNIT TO THEREBY FLARE THE SAME OUTWARDLY, PLACING A SUBSTANTIALLY INCOMPRESSIBLE BEAD WIRE AROUND THE