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An energy efficient, secure and economical patio door features hinged and fixed door panels with a strike mullion connected to the fixed door panel through a metal stiffener and with the strike mullion forming an integral part of the door frame by being tied thereto through head and sill members. Th

An energy efficient, secure and economical patio door features hinged and fixed door panels with a strike mullion connected to the fixed door panel through a metal stiffener and with the strike mullion forming an integral part of the door frame by being tied thereto through head and sill members. The assembly is reversible end-to-end and therefore non-handed. The number of door panels can be increased or decreased and the assembly is fully weather-stripped.

대표청구항 ▼

A door structure for patios and the like comprising at least one fixed and one hinged door panel in side-by-side relationship in a common vertical plane, a center mullion extending from top to bottom of said door panels and having a portion thereof projecting between said fixed and hinged door panel

A door structure for patios and the like comprising at least one fixed and one hinged door panel in side-by-side relationship in a common vertical plane, a center mullion extending from top to bottom of said door panels and having a portion thereof projecting between said fixed and hinged door panels, a hinge jamb for said hinged door panel extending from top to bottom thereof, said center mullion constituting a strike member for said hinged door panel, a jamb for the edge of the fixed door panel away from said center mullion, and a Metal stiffener for said center mullion extending from top to bottom thereof and being connected with the center mullion and with a stile of said fixed door panel and locking the fixed door panel rigidly to the center mullion, said metal stiffener comprising a unitary member of uniform cross section and being generally L-shaped in cross section and lapping to substantially right angular faces on the portion of the center mullion projecting between said fixed and hinged door panels, projecting flanges on said stiffener extending from top to bottom thereof at one side of the center mullion and being lockingly engaged with the adjacent stile of the fixed door panel, and said stiffener additionally having an inset web between said flanges engaged lockingly in a recess provided in said portion of said center mullion projecting between said fixed and hinged door panels, said web and recess extending from top to bottom of the center mullion, and said portion of the center mullion being of reduced thickness compared to the body portion of the mullion lying forwardly of the fixed and hinged door panels.