Linear actuator

A linear actuator comprising:

• a housing comprising a hollow cylindrical body having an outer wall;
• a piston rod having a longitudinal axis;
• and
• at least one locking arrangement comprising an arm extending parallel to an radially from the outer wall,
• wherein the piston rod is axially moveable in a first direction relative to the housing to extend the piston rod,
• wherein the piston rod is axially moveable in a second direction relative to the housing to retract the piston rod,
• wherein the piston rod is rotatable about the longitudinal axis relative to the housing between an operational state and a locking state,
• wherein each locking arrangement comprises a piston rod flange extending from the piston rod and a housing flange extending from the arm of the locking arrangement,
• wherein when the piston rod is in the operational state, each housing flange does not overlap with each piston rod flange so as to allow axial movement of the piston rod in the first and second directions,
• wherein when the piston rod is in the locking state and the housing flange is positioned beyond the piston rod flange in the first direction, the housing flange of each locking arrangement at least partially overlaps with the piston rod flange of that locking arrangement so as to limit axial movement of the piston rod in the first direction.