Assembled driving belt

A driving belt having a substantially trapezoidal cross-section for use of V-shaped pulleys, said driving belt consisting of one or more endless carriers and a number of cross elements, said cross elements being generally planar and butting against one another along said one or more endless carriers, said cross elements having first planar surface portions wherein their planar surfaces perpendicular to the one or more carriers are parallel to one another, and tapered leg portions, at least one surface of each of said tapered leg portions meeting at least one of said first planar surfaces at a tilting zone, whereby the tapered leg portions contact one another as the belt is curved around a pulley and the first planar surface portions contact one another when the belt is straight between pulleys, each of said cross elements including at least one projection extending outwardly from one of the first planar surfaces thereof and a corresponding recess disposed on the other planar surface thereof for receiving the projection of an adjoining cross element, wherein the projection has at least an upper contour which in cross section is approximated by a circular arc extending from an origin along a tilting line at which the tapered leg portion meets the first planar surface portion, and wherein the recess has a complementary contour.