Patent ID: 7694544

Claim:
A pressing device for forming steel sheet blanks into clips, which comprise curved planking elements and rectilinear stringer elements, for connecting a fuselage cell skin to a stringer and to an annular rib in an aircraft fuselage, comprising: at least one curved upper tool; at least one curved lower tool; at least one rectilinear upper tool; at least one rectilinear lower tool; wherein the upper and lower curved tools each have an approximately V-shaped cross-sectional geometry that varies in the longitudinal direction of the upper and lower curved tools, thereby forming upper and lower convexity surfaces; and wherein the upper and lower convexity surfaces are designed to essentially correspond to each other in order to form curved planking elements, and the at least one rectilinear upper tool and the at least one rectilinear lower tool each comprise an upper and lower bending surface designed to correspond to each other in order to form the rectilinear stringer elements.