Patent ID: 7104741

Claim:
A fastener device made from wire, said device comprising: a base portion and two legs connected to the base portion to form a clip, each of the two legs being formed as a shank; and each shank including a chamfered end configured to be driven into a material, and also including a weakened shank region disposed between a first adjacent shank region and a second adjacent shank region, the weakened shank region having a cross-section irregularly weakened with respect to the cross-sections of the first adjacent shank region and the second adjacent shank region, and wherein the second adjacent shank region is coupled to the end adapted to be driven into a material, the entire second adjacent shank region being disposed at an angle with respect to the first adjacent shank region, said angle being preset prior to driving said end into the material, wherein the irregularly weakened cross-section is a cross-section irregularly reduced with respect to the cross-sections of the two adjacent shank regions, said weakened cross-section being reduced by an indented or embossed impression in only an outer side of the shank, wherein the second adjacent shank region directly extends from the weakened shank region having the irregularly reduced cross-section.