Composite frame, particularly for windows, doors and facades

A composite frame, particularly for windows, doors or the like, comprising two metal sub-frames spaced apart from each other;

• a pair of elongated insulating members mounted between said sub-frames and connecting said sub-frames to each other, said sub-frames being provided with outwardly extended portions, said insulating members being formed with respective grooves which receive said portions, said portions being plastically deformed into said grooves thereby engaging said grooves;
• and a plurality of elongated gripping elements, each located in the respective insulating member in the region of engagement of the same with said respective portion of said sub-frame to thereby increase the coefficient of friction of said insulating member relative to said metal sub-frames, each of said insulating members being formed with an elongated recess at an edge portion thereof to receive the respective one of said elongated gripping elements, said elongated gripping elements being each formed with anchoring teeth provided at two opposite sides thereof and extending along the length of the gripping element, and each of said gripping elements being a wire, said teeth extending outwardly from the axis of said wire.