TONGUE AND GROOVE JOINT Russian patent published in 2013 - IPC E02B3/06 E02D5/02 E02D5/08 

FIELD: construction.

SUBSTANCE: tongue and groove joint comprises a tongue and groove ledge with a comb and a tongue and groove grip with a race and a mouth made of rolled sections. The mouth of the tongue and groove grip follows the shape of the comb of the tongue and groove ledge and covers it with the possibility of partial rotation. The tongue and groove grip is made as welded from two rolled sections. Each grip section has a cross section in the form of a hook and comprises a C-shaped section and a rectilinear section coupled with its one edge. At the same time grip sections are facing each other with concave sides of C-shaped areas to form a race for a comb of the tongue and groove ledge. The grip profiles are welded to each other by rectilinear sections or via an intermediate connection element to form a gap between free edges of the C-shaped areas.

EFFECT: simplified technology of grip manufacturing with provision of high strength of a proposed tongue and groove joint.

5 cl, 5 dwg