Patent ID: 7819360

Claim:
A window frame for installation in the exterior shell of an aircraft, comprising: at least one outer flange having different thicknesses in respective radial areas; at least one inner flange; and at least one vertical flange arranged perpendicular to and between the at least one outer flange and the at least one inner flange; wherein the at least one outer flange includes an inner boundary located at the intersection between the at least one outer flange and the at least one vertical flange and an outer boundary located at a radially outward edge of the at least one outer flange; wherein a connection with the aircraft structure is realized via the at least one outer flange; wherein on the at least one inner flange, a window element to be held is attached, which is held via the at least one vertical flange; wherein the window frame comprises a resin reinforced with unidirectionally arranged fiber bundles; and wherein the unidirectional arranged fiber bundles have a +/−60° direction on the outer sides of the at least one vertical flange, the at least one inner flange, and the at least one outer flange; wherein the at least one outer flange includes a first bundle of first fibers, the first fibers being oriented in a direction that changes radially outward from the inner boundary where the first fibers are oriented in a +/−45° direction, to the outer boundary where the first fibers are oriented in a +/−60° direction; wherein the at least one outer flange includes a second bundle of second fibers, the second fibers being oriented in a direction that changes radially outward from the inner boundary where the second fibers are oriented in a +/−60° direction, to the outer boundary where the second fibers are oriented in a +/−70° direction.