Register for delivery of air

Claim 1

AN AIR REGISTER SECTION COMPRISING (A) A HOUSING FORMED OF TOP, BACK, FRONT, INCLINED FRONT AND END WALLS, (B) SAID INCLINED FRONT WALLS BEING A REMOVABLE GRILLE MOUNTED IN AN OPENING BETWEEN SAID TOP, FRONT AND END WALLS, (C) SAID FRONT AND END WALLS HAVING INWARDLY EXTENDING FLANGES ALONG THE FRONT SIDE OF SAID HOUSING (D) SAID TOP WALL HAVING A DEPENDING FLANGE ALONG THE FRONT SIDE OF SAID HOUSING, SAID FLANGES OF SAID FRONT, END AND SIDE WALLS DEFINING SAID OPENING, (E) SAID GRILLE HAVING OUTWARDLY EXTENDING FLANGES ALONG ITS OUTER EDGES, THE SIDE AND LOWER FLANGES OF SAID GRILLE RESTING ON SAID SIDE AND LOWER FLANGES OF SAID OPENING AND THE UPPER FLANGE OF THE SAID GRILLE EXTENDING UNDER SAID DEPENDING TOP FLANGE, (F) THE FLANGES OF SAID GRILLE HAVING PROJECTING LIPS WHICH PROVIDE A SNAP FIT OF THE GRILLE TO SAID FLANGES OF SAID OPENING, (G) A DAMPER, (H) MEANS PIVOTALLY AND DETACHABLY MOUNTING SAID DAMPER UPON SAID GRILLE INTERIORLY OF SAID HOUSING AND PERMITTING MOVEMENT OF SAID DAMPER OF REGULATE AMOUNT OF AIR EXITING FROM SAID REGISTER, (I) AND MEANS INCLUDING DETACHABLE SPRING MEMBERS WHICH ENGAGE A PORTION OF PIVOT MEMBERS OF SAID DAMPER AND A PORTION OF SAID GRILLE TO FORM SAID DETACHABLE MOUNTING OF SAID DAMPER.