One piece curl clip with hinge line interlock

Claim 1

IN A CLIP COMPRISING A SINGLE-PIECE BLANK OF MOLDEDK SYNTHETIC PLASTIC MATERIAL HAVING TWO FOLDED OVER CONFRONTING SECTIONS CONNECTED BY HINGE FORMING WEB MEANS AT THE INNER ENDS THEREOF AND FORMING WORK ENGAGING JAWS AT THE OUTER ENDS THEREOF AND HANDLE FORMING PORTIONS AT THE INNER ENDS THEREOF, SAID CLIP SECTIONS HAVING A FULCRUM BETWEEN THE ENDS THEREOF FOR PIVOTING THE SECTIONS RELATIVE TO ONE ANOTHER TO ENABLE THE WORK ENGAGING JAWS TO BE SEPARATED BY FORCE APPLIED TO THE HANDLE FORMING PORTIONS THEREAT, ONE OF SAID SECTIONS HAVING A RESILIENT JAW URGING ARM EXTENDING FROM A POINT ADJACENT THE WORK ENGAGING END THEREOF TOWARD THE OPPOSITE END THEREOF AND BEING UNCONNECTED WITH SAID ONE JAW FOR THE REMAINDER OF THE LENGTH THEREOF, AND THE OTHER SECTION HAVING A CONNECTING MEANS FOR SAID JAW URGING ARM, SAID JAW URGING ARM ENGAGING WITH SAID CONNECTING MEANS TO PLACE THE JAW URGING ARM UNDER INITIAL COMPRESSION WHICH APPLIES A JAW CLOSING FORCE ALONG THE JAW URGING ARM TOWARD THE BASE END THEREOF TO URGE THE WORK ENGAGING END OF THE SAID ONE CLIP SECTION TOWARD THE WORK ENGAGING END OF THE OTHER CLIP SECTION, THE IMPROVEMENT COMPRISING A CROSSBAR AT THE HANDLE FORMING END OF ONE OF THE CLIP SECTIONS, AND A LOCKING PROJECTION AT THE HANDLE FORMING END OF THE OTHER CLIP SECTION, SAID LOCKING PROJECTION PARTIALLY OVERLYING AND INTERLOCKING WITH SAID CROSSBAR TO PREVENT THE SEPARATION OF THE WEB CONNECTED ENDS OF SAID CLIP SECTIONS IN THE EVENT OF BREAKAGE OF SAID WEB MEANS.