The Boeing Company
WRENCH HEAD

Abstract:

A wrench head (100) comprises a working axis (1089), a first jaw (110), a second jaw (120), and a third jaw (130). The first jaw (110) comprises first-jaw arcuate convex contact surface (111A), second first-jaw arcuate convex contact surface (111B), third first-jaw arcuate convex contact surface (111C), and first-jaw planar contact surface (160). The second jaw (120) is coupled with and is pivotable relative to the first jaw (110) and comprises second-jaw arcuate convex contact surfaces (121). The third jaw (130) is coupled with and is pivotable relative to the second jaw (120) and comprises a third-jaw arcuate convex contact surface (131A) and a third-jaw planar contact surface (155A).