主权项 |
1. A finishing trim system, comprising:
a base portion, comprising an inner surface, outer surface and side surfaces, the side surfaces extending perpendicular to the inner surface and the outer surface, wherein the inner surface of the base portion is configured to be secured to a building structure; a trim portion, comprising an inner surface, outer surface, inner side surfaces and outer side surfaces, wherein the trim portion outer surface and outer side surfaces comprise a substantially finished ornamental configuration; wherein the base portion outer surface and side surfaces are configured to receive the trim portion inner surface and inner side surfaces respectively, installable on the base portion; wherein when the trim portion is installed on the base portion, the base portion is substantially concealed by the trim portion; wherein the base portion further comprises a structure adapted to grip a corresponding structure on the trim portion; wherein the structure adapted to grip comprises a bead extending from one of the base portion side surfaces, and the trim portion comprises a groove in one of the trim portion side surfaces for receiving the bead; wherein the structure adapted to grip comprises a ball extending from one of the base portion side surfaces, and the trim portion comprises a detent in one of the trim portion side surfaces for receiving the ball; and wherein the ball and detent are configured to maintain the base portion and trim portion in a fixed positional relationship. |