gas spring is equipped with two cylinders charged at different forces which thus
cover two force ranges.
springs are mainly used on heavy flaps with large opening angles, as in such cases
a low starting force and a high ending force is required.
compression of the spring causes a jumping progression curve which adjusts much
better to the flap´s power course.
In extended position only a low spring force is
required as the point of
gravitiy S is located very
near to the pivot point.
In this position
half of the flap´s weight is effective.
The gas spring´s shorter side is
force of the other cylinder takes effect.
position the gas spring is compressed. Depending on the flap´s weight the first
adjusted to range “a”, the second to range “b”.