Longitudinal joint support

Claim 1

A JOINT SUPPORT FOR HOLDING TWO ADJACENT STRIPS AGAINST MOVEMENT VERTICALLY RELATIVELY TO EACH OTHER ALONG THEIR ABUTTING LONGITUDINAL EDGES BUT PERMITTING MOVEMENT OF ONE STRIP LENGTHWISE RELATIVELY TO THE OTHER, SAID JOINT SUPPORT INCLUDING TWO ANCHORING PARTS TO BE EMBEDDED IN TWO ADJACENT SECTIONS OF THE TWO PAVEMENT STRIPS, ONE OF SAID PARTS HAVING A SOCKET PORTION WITH AN OUTWARDLY FACING OPENING ACCESSIBLE AT AN EDGE OF ONE OF SAID PAVEMENT STRIPS WHEN SAID PART IS EMBEDDED THEREIN, THE OTHER PART HAVING A KEY ADAPTED TO FIT INTO SAID SOCKET TO INTERLOCK THEREWITH, FLANGES ON SAID SOCKET IN THE DIPREVENT REMOVAL OF SAID KEY FROM SAID SOCKET IN THE DIRECTION OF THE LENGTH OF THE JOINT SUPPORT WHEN SAID KEY IS TURNED AFTER ENTRY INTO SAID SOCKET, COOPERATING WEDGE MEANS IN SAID SOCKET AND ON SAID KEY WHICH FORCE SAID KEY INTO ENGAGEMENT WITH SAID FLANGES TO PREVENT MOVEMENT OF SAID KEY IN THE DIRECTION OF LENGTH OF SAID ANCHORING PARTS, AND HORIZONTALLY EXTENDING FLAT FACES IN SAID SOCKET WITH WHICH SAID KEY COOPERATES AFTER BEING TURNED INTO FRICTIONAL ENGAGEMENT WITH SAID FLANGES, SAID FLAT FACES EXENDING IN A DIRECTION OF THE LENGTH OF SAID PAVEMENT STRIPS AND TRANSVERSELY OF THE LENGTH OF SAID ANCHORING PARTS AND BEING OF SUFFICIENT LENGTH TO PERMIT SLIDING MOVEMENT OF SAID KEY AND FLAT FACES RELATIVE TO EACH OTHER TO PERMIT CORRESPONDING MOVEMENT OF SAID PAVEMENT STRIPS RELATIVELY TO EACH OTHER IN THE DIRECTION OF THE LENGTH OF SAID PAVEMENT STRIPS.