Burial vaults

Claim 1

AN AIR-SEAL BURIAL VAULT FORMED OF LIGHTWEIGHT PLASTIC RESINOUS MATERIAL AND COMPRISING A GENERALLY RECTANGULAR-SHAPED BASE MEMBER INCLUDING A GENERALLY CHANNEL-SHPED BOTTOM MARGINAL WALL PORTIN HAVING AN OPEN TOP, AND A REISED GENERALLY HORIZONTALLY EXTENDING CASKETSUPPORTING PLATFORM DISPOSED ABOVE AND WITH IN THE SAID MARGINAL BOTTOM WALL PORTION AND INTERCONNECTED THERETO BY GENERALLY VERTICALLY EXTENDING SIDE AND END WEB PORTIONS EXTENDING BETWEEN THE SAID MARGINAL BOTTOM WALL PORTION AND THE SAID RAISED PLATFORM OF SAID BASE MEMBER, A GENERALLY DOME-SHAPED COVER MEMBER INCLUDING A GENERALLY ARCUATE TOP WALL HAVING A ROUNDED BUT RELATIVELY FLAT OUTER SURFACE AND A COMPLEMENTAL ARCUATE INNER SURFACE AND AN OPEN BOTTOM, AND INCLUDING SIDE WALL AND END WALLS EXTENDING SUBSTANTIALLY PARALLEL TO THE SAID SIDE AND END WEB PORTIONS, RESPECTIVELY, OF THE SAID BASE MEMBER OUTWARDLY OF THE LATTER, THE SAID WALLS AND END WALLS OF THE SAID DOME-SHAPED COVER MEMBER HAVING LOWER EDGE PORTIONS DISPOSED IN THE SAID CHANNEL-SHAPED MARGINAL BOTTOM WALL PORTION OF THE SAID BASE MEMBER OUTWARDLY OF THE SAID INTERCONNECTING WEB PORTIONS, SEALING MEANS DISPOSED IN THE SAID CHANNEL-SHAPED MARGINAL BOTTOM WALL PORTION AND AROUND THE LOWER EDGE PORTIONS OF THE SAID SIDE WALLS AND END WALLS OF THE SAID DOMESHAPED COVER MEMBER DISPOSED THEREIN, THE SAID GENERALLY DOME-SHAPED COVER MEMBER HAVING A PLURALITY OF SPACED PARALLEL HOLLOW AND GENERALLY CHANNEL-SHAPED REINFORCING MEMBERS ATTACHED THERETO ONLY ON THE INNER SURFACES THEREOF, EACH OF THE SADI SPACED PARALLEL HOLLOW REINFORCING MEMBERS COMPRISING A BOTTOM WALL WITH SPACED LEGS PROJECTING THEREFROM, SAID HOLLOW REINFORCING MEMBERS HAVING UPPER PORTIONS EXTENDING ACROSS THE TOP WALL OF THE SAID COVER MEMBER ON THE INNER SURFACE THEREOF THE WITH BOTTOM WALL OF SAID UPPER PORTIONS OF SAID REINFORCING MEMBERS EXTENDING IN A PLANE SUBSTANTIALLY PARALLEL TO SAID CASKET SUPPORTING PLATFORM AND THE VERTICAL DISTANCE BETWEEN THE BOTTOM WALL AND THE INNER SURFACE OF SAID TOP WALL OF THE COVER MEMBER DECREASING ALONG THE LENGTH OF THE REINFORCING MEMBERS FROM CENTER TO THE OUTER EDGE PORTIONS THEREOFE ADJACENT THE COVER SIDE WALLS, AND EACH OF THE SAID HOLLOW AND GENERALLY CHANNELSHAPED REINFORCING MEMBERS HAVING A PORTION EXTENDING DOWNWARDLY OVER THE INNER SURFACE OF EACH OF THE SAID SIDE WALLS OF SAID COVER MEMBER ON THE INNER SURFACE THEREOF CONTINUING FROM THE OUTER EDGE PORTIONS OF SAID UPPER PORTIONS OF SAID REINFORCING MEMBERS TO A POINT ADJACENT THE UPPER SURFACE OF THRSAID RAISED GENERALLY HORIZONTALLY EXTENDING CASKET-SUPPORTING PLATFORM OF THE SAID BASE MEMBER, EACH OF THE SAID DOWNWARDLY EXTENDING PORTIONS OF THE SAID HOLLOW AND GENERALLY CHANNEL-SHAPED REINFORCING MEMBERS HAVING THE DISTANCE BETWEEN THE CHANNEL BOTTOM WALL THEREOF AND THE INNER SURFACE OF THE ADJACENT COVER SIDE WALL GRADUALLY DECREASING ALONG THE LENGTH THEREOF FROM ITS UPPER END PORTION TO ITS LOWER END PORTION WITH THE WIDTH OF SAID CHANNEL BOTTOM WALL GRADUALLY INCREASING AS SAID DISTANCE DECREASES, AND THE SAID RAISED HORIZONTALLY EXTENDING CASKET-SUPPORTING PLATFORM PORTION OF THE SAID BASE HAVING A PLURALITY OF SPACED PARALLEL UPWARDLY AND TRANSVERSELY EXTENDING CASKET-SUPPORTING AND BASE STRENGTHENING MEMBERS THEREON AND PROJECTING UPWARDLY ABOVE THE SURFACE OF THE SAID RAISED PLATFORM PORTION OF THE SAID BASE.