The stops (40, 42) can be rotated relative to the cylinder to thread the stops (40, 42) in or out, thereby changing the stroke of the steering cylinder.

The retainers (48, 50) can be selectively removed from the cylinder and then used as a wrench to rotate the stops (40, 42) to adjust the cylinder stroke.

By altering the locking pin (25) position and therefore the pivot point for the primary connecting rod, the stroke of the ram is changed.

A sheave arrangement (120, 130), placed at opposite ends of the passive cylinder-active cylinder combination, is used to introduce a line travel multiplier for cylinder displacement.

The drive system is connected to the ram to extend the ram and allow retraction of the ram.

speed of translation of the cylinder rod (time, stroke),

The stops (40, 42) can be rotated relative to the cylinder to thread the stops (40, 42) in or out, thereby changing the stroke of the steering cylinder.

The invention relates to a triggered-travel jack capable of immobilising the piston in an initial position before triggering.

Actuator with triggered stroke and damped return travel.

The retainers (48, 50) can be selectively removed from the cylinder and then used as a wrench to rotate the stops (40, 42) to adjust the cylinder stroke.

The piston stroke per unit of time can be determined due to the fact that the filling volume of the hydraulic cylinder is known.

The small cavity of the first oil cylinder (1) communicates with the small cavity of the second oil cylinder (2) each other.

The threads (26) of the jackbolt have a different thread pitch than the threads (36) in the jackbolt body (38) and the tooth flank of the jackbolt threads (26) form an angle with the tooth flanks of the threads (36) in the jackbolt body (38).

The second ram (92) is movable toward and away from the first ram (74).

The first end of the strut is attached to the door via a strut stop bracket.