Highway marker device

Claim 1

IN AN APPARATUS FOR SUPPORTING A HIGHWAY DEVICE ABOVE A ROAD HAVING A SURFACE AND ADAPTED TO RECEIVE AN IMPACT FORCE, THE COMBINATION OF: A BASE MEMBER RIGIDLY EMBEDABLE IN AND UPPER END THE ROAD, SAID BASE MEMBER HAVING AN UPPER END PORTION POSITIONABLE ADJACENT THE SURFACE OF THE ROAD; AN ELONGATED SUPPORT MEMBER HAVING UPPER AND LOWER END PORTIONS, SAID LOWER END PORTION OF SAID SUPPORT MEMBER BEING POSITIONABLE CLOSELY ADJACENT SAID UPPER END PORTION OF SAID BASE MEMBER, SAID UPPER END PORTION OF SAID SUPPORT MEMBER EXTENDING ABOVE THE ROAD AND BEING CONNECTIBLE TO THE HIGHWAY DEVICE; EACH OF SAID UPPER END PORTION OF SAID BASE MEMBER AND SAID LOWER END PORTION OF SAID SUPPORT MEMBER INCLUDING UPWARDLY AND DOWNWARDLY OPENING THREADED RECESSES, RESPECTIVELY; FRACTURABLE MEANS FOR SUBSTANTIALLY RIGIDLY INTERCONNECTING SAID UPPER END PORTION OF SAID BASE MEMBER AND SAID LOWER END PORTION OF SAID SUPPORT MEMBER CLOSELY ADJACENT THE ROAD, SAID FRACTURABLE MEANS INCLUDING A FRACTUABLE MEMBER HAVING THREADED END PORTIONS RECEIVABLE IN SAID THREADED RECESSES, RESPECTIVELY, SAID FRACTUABLE MEMBER HAVING A PORTION INTERMEDIATE THE ENDS THEREOF STRUCTUALLY WEAKER THAN EITHER OF SAID MEMBERS WHEREBY WHEN SAID SUPPORT MEMBER RECEIVES THE IMPACT FORCE SAID FRACTURABLE MEMBER BREAKS TO CAUSE SEPARATION OF SAID MEMBERS AND TO LEAVE SAID BASE MEMBER EMBEDDED IN THE ROAD AND SUBSTANTIALLY UNMOVED BY THE IMPACT FORCE; AND SAID FRACTURABLE MEMBER HAVING WRENCH FLATS ON BOTH SIDES OF SAID WEAKENED PORTION THEREOF TO ASSIST IN THE REMOVAL OF THE THREADED END PORTIONS FROM SAID THREADED RECESSES FOLLOWING SEPARATION OF SAID BASE MEMBER AND SAID SUPPORT MEMBER.