Patent ID: 6371188
Filing Date: 2002-04-16
Classification: E06B

Abstract:
A door frame assembly constructed and arranged to be installed in a doorway located at an exterior of a building in conjunction with a door panel movable between open and closed positions with respect to the doorway, said door frame assembly comprising:first and second side jambs constructed and arranged to be mounted along first and second generally vertically extending sides of the doorway; door sill assembly constructed and arranged to be mounted along a lower edge of the doorway between said first and second side jambs, said door sill assembly comprising: a sub-sill having a peripheral wall including a bottom wall, first and second end walls extending generally upwardly from said bottom wall at opposing end portions of said sub-sill, a rear wall extending generally upwardly from and generally longitudinally between said end walls, and a front wall extending generally upwardly from and generally longitudinally between said end walls opposite said rear wall, said walls of said sub-sill providing interior surfaces that cooperate to define an open fluid-receiving trough extending between said front and rear walls and said first and second end walls, said peripheral wall having one or more openings formed therethrough to allow fluid in the trough to drain from the trough to the building exterior when said door frame assembly is installed in the doorway with said front wall facing the building exterior, said end and rear walls being constructed and arranged to prevent fluid in the trough from flowing into the building interior, a tread structure mounted to said sub-sill so as to cover said sub-sill, said tread structure and said sub-sill being constructed and arranged such that fluid flowing over said tread structure towards building interior is directed into the trough of said sub-sill and then is allowed to drain out from said trough to the building exterior through the one or more openings in the peripheral wall of said sub-sill, said first and second side jambs and said door sill assembly being constructed and arranged such that said first and second side jambs connect to the opposing end portions of said sub-sill with portions of said first and second side jambs extending inside said first and second end walls, respectively, and downwardly into said trough adjacent opposing end portions of said tread structure so that fluid flowing over said tread structure towards the building interior adjacent to said first and second side jambs is allowed to flow downwardly into the trough of said sub-sill between said tread structure and said side jambs and then is allowed to drain out from said trough to the building exterior through the one or more openings in the peripheral wall of said sub-sill.