Flush Window Profile System with Metal Cover and Sealing

The patent combines metal attachment profiles with plastic frame profiles to create a composite profile system. The metal profiles are attached to the plastic profiles and extend to the outer visible surface, merging two different materials to achieve both the structural benefits of plastic and the aesthetic benefits of metal, resulting in a flush external view without visible plastic profiles.

The metal attachment profiles are nested onto the plastic frame profiles, with the metal profiles forming an outer layer that covers the plastic profiles. This nested structure allows the plastic profile to provide structural support while the metal profile provides the desired external appearance, effectively hiding the plastic material from external view.

The patent applies different connection characteristics to different parts of the profile system. The metal attachment profiles are screwed to the plastic frame profiles at specific locations to provide strong connection, while the overall design allows for controlled movement at the interface to prevent stress concentration that would cause curvature. The connection is strong where needed but flexible where stress transfer would be harmful.

The patent introduces dynamic characteristics to the connection between metal and plastic profiles. Rather than a rigid fixed connection, the system allows for controlled relative movement between the metal attachment profiles and plastic frame profiles. This dynamic connection absorbs shear forces through controlled displacement, preventing the buildup of stresses that would cause profile curvature while maintaining connection strength.