Patent ID: 7730710

Claim:
Strap with articulated links for a watch, comprising: at least three adjacent longitudinal rows of links offset longitudinally from one adjacent row to another, said links comprising transverse passages, connecting rods received in said transverse passages so that said rows of links are connected and positioned by said connecting rods. said strap comprising joints, wherein each joint comprises: (i) friction surfaces with axial guidance and (ii) friction surfaces with lateral guidance, wherein all the friction surfaces of each joint consist of a pair of materials formed from a first material having a hardness of more than 800 HV and a second material selected from the following materials: ceramic, ceramic-metal composite, amorphous carbon, stainless steel without nickel, cobalt alloy, gold, gold alloy, platinum, platinum alloy, platinoid, platinoid alloys, titanium, titanium alloy, each of the pairs of materials making it possible to reduce substantially the wear between said friction surfaces relative to any other pair of materials.