Patent ID: 7111433

Claim:
An elongate nosing assembly for mounting to an elongate jamb plate, wherein such elongate jamb plate is designed and configured to be mounted on an elongate jamb substrate of a door frame, wherein such elongate jamb plate comprises a main side panel, and at least one outer panel, such at least one outer panel being configured to extend at an angle transverse to such main side panel, and away from such main side panel, a given one such outer panel bearing a first mounting structure having first and second locks ( 48 A, 48 B), said elongate nosing assembly comprising (a) a nosing comprising second mounting structure having third and fourth locks ( 54 A, 54 B), designed and configured to cooperatively mount to such first mounting structure of such jamb plate, thereby to mount said nosing to such jamb plate; and (b) a mounting fin mounted to said nosing, and wherein said mounting fin is adapted to be articulated toward such main side panel of such jamb plate, and into proximity with a such jamb substrate when said elongate nosing assembly is mounted to a such jamb plate which is mounted to a such jamb substrate, said elongate nosing assembly being a two-component assembly comprising said nosing, as a single-piece nosing, and said mounting fin.