Vehicle wheel nut or bolt

Claim 1

IN COMBINATION A THREADED FASTENER FOR VEHICLE WHEELS HAVING A HEAD COMPRISING A FRUSTO-CONICAL BODY, AND A RELATIVELY FLAT RADIAL OUTER FACE AT ITS SMALL END, A CURVILINEARLY EXTENDING CHANNEL OF SUBSTANTIALLY CONSTANT WIDTH IN SAID OUTER FACE FORMING A CONTINUOUS CLOSED FIGURE SUBSTANTIALLY DEVOID OF STRAIGHT LINE PORTIONS AND OF VARYING CURVATURE WHEREBY VARIOUS PORTIONS OF SAID CLOSED FIGURE LIE AT VARIOUS DISTANCES FROM THE AXIS OF SAID FRUSTOCONICAL BODY, AND A WRENCH FOR ENGAGEMENT WITH SAID BODY TO APPLY AND REMOVE THE SAME WITH RESPECT TO A COOPERATING THREADED MEMBER, SAID WRENCH HAVING A RADIAL FACE ADAPTED TO BE DIRECTED TOWARD THE RADIAL FACE OF SAID THREADED MEMBER, AND A FLANGE FORMATION PROJECTING FROM THE RADIAL FACE OF SAID WRENCH, SAID FLANGE HAVING A CURVILINEAR CONFIGURATION COINCIDENT WITH THE CONFIGURATION OF SAID CHANNEL AND BEING OF A WIDTH SLIGHTLY LESS THAN THE WIDTH OF SAID CHANNEL WHEREBY SAID FLANGE FITS SNUGLY WITHIN SAID CHANNEL TO SECURELY LOCK SAID WRENCH TO SAID BODY WHEREBY ROTATION OF SAID WRENCH TIGHTENS OR LOOSENS SAID THREADED MEMBER.