Patent ID: 7762500

Claim:
An aircraft wing, comprising: a root portion; a tip portion that is telescopically related to the root portion; a spar assembly that connects the root portion to the tip portion for providing structural support to the tip portion, the spar assembly having a plurality of links that are pivotally connected to one another; an extension axis defined from the root portion to the tip portion, wherein the spar assembly moves the tip portion with respect to the root portion between an extended position, wherein each link of the plurality of links of the spar assembly extends parallel to the extension axis, and a retracted position, wherein adjacent links of the plurality of links form acute interior angles with respect to one another; wherein each link has a first joint portion and a second joint portion disposed on opposite ends thereof, the first joint portions are pivotally connectable to the second joint portions of an adjacent link for connecting adjacent links in a vertically aligned fashion; wherein the first joint portions include an inclined limit surface, the limit surface is engageable with a side surface of an adjacent link for defining the minimum interior angle that may be formed between adjacent links; and wherein the limit surface is inclined with respect to a longitudinal face of its corresponding link.