Patent ID: 8365420

Claim:
A tightening apparatus comprising: a tightening member having a screwing axis about which said tightening member can rotate; and a wrench suitable for rotating said tightening member, said wrench having a handling arm, said wrench being connected to said tightening member such that said wrench can swivel about a swivel axis in relation to said tightening member, said swivel axis being perpendicular to said screwing axis, said wrench causing said tightening member to rotate around said screwing axis for at least 170° for tightening the tightening member, said tightening member movable to a rest position substantially perpendicular to said screwing axis after the tightening, said tightening member having a pin and said handling wrench having a prong that contact each other in the tightening direction when said wrench is at one end of a range of motion and also in a loosening direction when said wrench is at another end of the range of motion.