Continuous slide fastener

Claim 1

A SLIDE FASTENER ELEMENT ROW COMPRISING AN ELONGATED ELEMENT BENT TO FORM A FLATTENED NON-CURCLAR HELIX INCLUDING IDENTICAL SUCCESSIVE COMPLETE TURNS EACH LYING IN A PLANE SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF THE HELIX; EACH TURN INCLUDING FIRST AND SECOND BIGHTS WHICH FACE EACH OTHER AND A PAIR OF SUBSTANTIALLY RECTILINEAR AND RELATIVELY ELONGATED LIMBS EXTENDING, IN SUBSTANITALLY CONTIGUOUS RELATION IN THE PLANE OF THE TURN, FROM OPPOSITE ENDS OF SAID FIRST BIGHT; ONE OF SAID LIMBS EXTENDING TO ONE END OF SID SECOND BIGHT AND THE OTHER LIMB BEING BENT LATERALLY OUT OF THE PLANE OF THE TURN, JUST IN ADVANCE OF THE OTHER END OF SAID SECOND BIGHT, TO EXTEND TO THE CORRESPONDING OTHER END OF THE SECOND BIGHT OF THE ADJACENT TURN; EACH FIRST BIGHT COMPRISNG A HEAD PIECE WIDENED LATERALLY OF THE ASSOCIATED TURN TO PROVIDE OPPOSITELY PROJECTING LOCKING PROJECTIONS, AND BEING EXPANDED IN THE PLANE OF THE ASSOCIATED TURN, THE HEAD PIECES OF SUCCESSIVE FIRST BIGHTS BEING ALIGNED IN A LONGITUDINAL ZONE EXTENDING PARALLEL TO THE AXIS OF THE HELIX.