#$%^&*AU2012203530A120130117.pdf#####- 12ABSTRACT 5 The invention is directed to a clutch for restricting the movement of a shaft. The clutch has a casing, a bracing member, and movement restricting means. In an active condition, a force is applied to the shaft to overcome resistance of the bracing member and the one or more movement restricting means to enable movement of the shaft. In an inactive condition, the force is removed from the shaft and the one or more movement 10 restricting means abut the bracing member, which in turn abuts the casing to prevent further movement of the shaft.1/7 10 20 ~16 2 18 /) ~1 27 -/./ 14 12 22 18 FIGURE IA 1214 40 34 12I 7/ - 38 / ,, / -38 / I 28 30/ ,77 ///, 40 38 36 24 26 16 FIGURE lB