The improved cable puller assembly utilizes a cylinder body comprising four double acting hydraulic cylinders set up in pairs of two, i.e. two forward cylinders and two aft cylinders.

Said hydrocylinders are coordinated in such a manner that the forces of feed produced by the two hydrocylinders have equal amounts and that the share of load is evenly distributed onto the two hydrocylinders.

Both of these flaps open and close with the help of two hydraulic cylinders.

This principle, as described for two opposed actuators, is also applicable to a cruciform test set up with four actuators.

The front suspension consists of two hydraulic cylinders (1) and two accumulators.

At least two linear actuators are coupled between the plates.

The adjustment operates via two vertical cylinders in the neck construction.

Two front ends of the two pedals are respectively connected to two hydraulic cylinders.

The hydraulic pump comprises two parallel cylinders (23, 24), which are driven so that always one of the cylinders performs a power stroke.

Two hydraulic oil cylinders (9) are mounted on the main framework.

A pair of linear actuators (50, 60) is provided to permit the power head to be moved to predetermined horizontal and vertical positions.

Each pair of guided cylinder assemblies comprising a compounding of two hydraulic cylinders namely a pumping cylinder and a guide cum retract cylinder.

two aligning cylinders on the base and on the beam

A piston-cylinder assembly for load handling arrangements and comprising at least two cylinders cooperating with mechanical machine components.

In central portion of two bed head rests (1) there is respectively fixed an air-cylinder (4) of the bed head.