Burial vault with sectional inclined sidewalls

Claim 1

IN A BURIAL VAULT; A BOTTOM PLATE HAVING TWO ENDS AND TWO SIDES; A PAIR OF END PIECES WITH ONE OF SAID END PIECES EXTENDING UPWARDLY FORM THE TOP SURFACE AT EACH END OF SAID BOTTOM PLATE; A PAIR OF SIDE PIECES, ONE OF SAID SIDE PIECES EXTENDING UPWARDLY FROM THE TOP SURFACE AT EAC SIDE OF SAID BOTTOM PLATE WITH SAID SIDE PIECES IN ENGAGEMENT WITH SAID END PIECES TO FORM AN ENCLOSURE OPEN AT THE TOP, THE OUTER EDGES OF SAID SIDE AND END PIECES ENGAGING THE TOP SURFACE OF SAID BOTTOM PLATE INSIDE THE PERIMETER OF THE TOP SURFACE OF SAID BOTTOM PLATE TO FORM A LIP ON THE BOTTOM PLATE ABOUT THE PERIMETER OF THE ENCLOSURE, EACH OF THE JUNCTURES OF SAID SIDE PIECES WITH SAID END PIECES HAVING ADJACENT SURFACES OF ADJOINING PIECES TAPERED RELATIVE TO EACH OTHER SO THAT THEY FORM A WEDGE SHAPED OPENING EXTENDING THROUGH THE HEIGHT OF SAID SIDE AND END PIECES AND OPENING INTO THE OUTER SURFACE OF THE ENCLOSURE; MEANS SECURING THE BOTTOM EDGES OF SAID SIDE AND END PIECES TO SAID BOTTOM PLATE; A STRIP OF SEALING MATERIAL IN EACH OF THE WEDGE SHAPED OPENINGS FOR SEALING THE JOINTS; A STRIP OF SEALING MATERIAL DISPOSED ON SAID LIP AND IN CONTACT WITH THE ADJACENT SURFACES OF SAID SIDE AND END PIECES TO SEAL THE JUNCTURE OF SAID SIDE AND END PIECES WITH SAID BOTTOM PLATE; A VEDGE FORMED IN THE TOP EDGE OF EACH OF SAID SIDE AND END PIECES; A COVER PLATE HAVING A V GROOVE FORMED IN ITS BOTTOM SURFACE AND RESTING ON THE TOP EDGES OF SAID SIDE AND END PIECES WITH ITS V GROOVE ENGAGED BY THE V EDGES OF SAID SIDE AND END PIECES FOR CLOSING THE TOP OF THE ENCLOSURE AND RETAINING SAID SIDE AND END PIECES IN POSITION IN THE ASSEMBLY; A LINEAR LOCATED WITHIN THE ENCLOSURE FORMED BY SAID BOTTOM PLATE WITH SAID SIDE AND END PIECES, SAID LINER BEING OPEN AT THE TOP; AND A FLANGE EXTENDING OUTWARDLY FROM SAID LINER ABOUT THE PERIPHERY OF THE OPENING IN SAID LINER, SAID FLANGE BEING CLAMPED BETWEEN THE V GROOVE OF SAID COVER PLATE AND THE V EDGES OF SAID SIDE AND END PIECES TO SECURE THE LINER IN POSITION WITHIN THE BURIAL VAULT AND SEAL ITS INTERIOR.