Corner joint between two sections having a c-shaped attaching portion by means of a corner connector, and angle piece for producing the joint

Claim 1

Corner joint which comprises: a first section having a C-shaped attaching portion and a second section arranged at an angle thereto and having a C-shaped attaching portion, wherein said first and second sections each have two parallel section legs and a first inwardly facing web on each of the two section legs; a corner connector consisting of two angle pieces each having two legs which bear against the two sections and each having a complementary angle piece; at least one screw and an associated parallelogram nut associated with each angle piece operative to screw the angle piece to the sections, wherein the nut grips behind the two first webs of the associated section; wherein said two angle pieces are separate and moveable relative to one another, and wherein the legs of the angle pieces bear against the first and second sections and each leg of said angle piece has a groove on the side remote from the complimentary angle piece and a wedge surface on the side opposed to said groove; a second web on each of the two section legs parallel to the first web wherein said second webs engage in a form-fitting manner in the grooves of the angle pieces; and at least one wedge rail which bears against the wedge surfaces and is clamped by the screws, wherein the angle pieces are spread apart by the wedge rail.