Doweled expansion joint

Claim 1

IN AN EXPANSION JOINT OF THE CHARACTER DESCRIBED HAVING AN ELONGATED, UNIFORM-WIDTH STRIP OF SUBSTANTIALLY RIGID SHEET MATERIAL FORMED WITH A CONTINUOUS ARCUATE TROUGH OFFSET LONGITUDINALLY AND CENTRALLY THEREOF AND A MAT OF COMPRESSIBLE MATERIAL CONFORMABLY OVERLYLING THE STRIP FACE CONCAVED BY SAID TROUGH, THE COMBINATION THEREWITH OF AN INTEGRAL FLANGE NORMAL TO THE PLANE OF SAID STRIP OUTSTANDING ALONG THE FULL LENGTH OF ONE EDGE MARGIN THEREOF FROM THE STRIP FACE CONCAVED BY THE TROUGH IN A WIDTH LATERALLY OF THE STRIP EXCEEDING THE THICKNESS OF SAID MAT, SAID FLANGE PROVIDING A SEAT FOR THE ADJACENT EDGE OF THE MAT AND BEING FORMED WITH A SUCCESSION OF LIKE APERTURES FOR THE RECEPTION OF STAKES SPACED APART LONGITUDINALLY THEREOF IN ALIGNMENT PARALLEL TO THE ADJACENT STRIP FACE AND OUTWARDLY FROM THE LATTER A DISTANCE APPROXIMATING THE THICKNESS OF THE MAT, WHEREBY STAKES ENTERED THROUGH SAID APERTURES TRANSVERSE OF THE STRIP INHIBIT SEPARATION OF THE MAT FROM ITS EDGE SUPPORT ON SAID FLANGE AS AN OVERLAY TO THE STRIP, AN INTEGRAL LATERALLY AND OUTWARDLY-OPENING CHANNEL SPACEDLY OPPOSED PARALLEL TO SAID FLANGE ALONG THE FULL LENGTH OF THE OTHER EDGE MARGIN OF SAID STRIP IN A SEPARATION FROM THE ADJACENT EDGE OF THE MAT, AND AN INTEGRAL LATERALLY - AND INWARDLY-OPENING CHANNEL ALONG THE FULL LENGTH AND BOUNDING THE SIDE OF SAID OUTWARDLY-OPENING CHANNEL REMOTE FROM THE STRIP IN OVERHANGING REGISTRATION WITH THE ALIGNED APERTURES INOF THE MAT, AND AN INTEGRAL LATERALLY - AND INWARDLY-OPENCHANNEL IS ADAPTED TO EMBRACE THE UPWARDLY-DIRECTED ENDS OF STAKES ENTERED THROUGH THE APERTURES OF THE FLANGE AND THEREBY POSITION AND SUPPORT THE STRIP WITH CONCOMITANT THEREBY POSITION AND SUPPORT THE STRIP WITH CONCOMITANT RETENTION OF THE MAT IN COVERING RELATION WITH THE TROUGHED FACE THEREOF AND SAID UPWARDLY-OPENING CHANNEL DEFINES GIN OF THE STRIP FOR RECEPTION OF JOINT-SEALING MATERIAL.