C-SHAPED PROFILE Russian patent published in 2008 - IPC E04B2/76 

FIELD: construction, particularly removable non-load-bearing partitions, namely C-shaped profiles of sheet material for double-sided partitions.

SUBSTANCE: C-shaped profile comprises two flanges and back, which connects flanges with each other. The flanges define side surfaces of C-shaped profile. At least one flange has corrugations projecting outwards. The corrugations define contact area of facing. If depth of corrugation insertion into facing layer is equal to 0.3 mm said contact area is 5-25% of side surface area. Corrugations have extensions on upper surfaces and ledges on lower surfaces thereof. Both flanges have different lengths and are arranged so that two identical C-shaped profiles may be connected with each other to create single rectangular profile including short flange of one C-shaped profile overlapping inner side of long flange of another one. Corrugations of both flanges are offset one from another. As two C-shaped profiles are connected with each other extensions of short corrugation flanges overlap ledges of long corrugation flanges.

EFFECT: improved profile properties and sound-proofing along with decreased additional costs.

18 cl, 6 dwg