Shaped element of plastic material for composite door frames

Claim 1

A DOOR JAMB ASSEMBLY FOR INSTALLATION OVER THE END OF A WALL DEFINING A DOOR OPENING COMPRISING IN COMBINATION: (A) A PAIR OF ELONGATED SUBSTANTIALLY L-SHAPED MEMBERS EACH HAVING A SIDE LEG OVERLYING A SIDE WALL OF THE OPENING AND AN END LEG OVERLYING THE END WALL OF THE OPENING, (B) A FIRST LONGITUDINALLY EXTENDING FLANGE LOCATED AT THE FREE END OF EACH OF SAID SIDE LEGS, EACH SAID FLANGE TERMINATING IN A FLEXIBLE ARCUATE TONGUE PORTION EXTENDING TOWARD ITS RESPECTIVE SIDE LEG, (C) A SECOND LONGITUDINALLY EXTENDING FLANGE LOCATED AT THE INTERSECTION OF THE SAID SIDE AND END LEGS EACH TERMINATING IN A SECOND TONGUE PORTION EXTENDING TOWARD SAID FIRST TONGUE PORTION AND DEFINING THEREWITH SPACED GROOVES FOR RECEIVING SIDE COAVER PLATES, (D) SIDE COVER PLATES INSERTED UNDER EACH OF THE SECOND FLANGE PORTIONS AND SNAPPED BEHIND THE FIRST ARCUATE FLANGE PORTIONS, (E) A THIRD LONGITUDINALLY EXTENDING FLANGE PORTION LOCATED ON ONE OF SAID END LEGS AND TERMINATING IN A THIRD TONGUE PORTION, (F) THE OTHER OF SAID END LEGS HAVING A FOURTH TONGUE PORTION EXTENDING TOWARD SAID THIRD TONGUE PORTION SAID THIRD AND FOURTH TONGUE PORTIONS THEREBY DEFINING SPACED GROOVES FOR RECEIVING AN END COVER PLATE, (G) AN END COVER PLATE INSERTED IN SAID FOURTH TONGUE PORTION AND LOCATED BEHIND SAID THIRD TONGUE PORTION, (H) SAID FOURTH TONGUE PORTION AND ONE OF SAID SECOND TONGUE PORTIONS EXTENDING FROM THE SAME LONGITUDINALLY EXTENDING FLANGE LOCATED AT THE INTERSECTION OF ONE OF SAID SIDE AND END LEGS.