Characteristics
The PIT Liquid Spring Technology uses a highly compressible fluid, a silicone oil. Under hydrostatic pressure this silcone oil functions as a spring as well as a shock absorber.
The compressible silicone oil is brought to a predetermined pressure in an inner cylinder. This pressure acts on the surface of a piston rod and so produces the beginning force of the spring.
The liquid silicone oil in the cylinder is initially under a predetermined pressure. Once the piston rod immerses in the cylinder ( due to an external force ) the silicone oil is compressed whithin the cylinder.
The internal pressure grows and attains its maximum when the piston rod is completely immersed. When the external force is released the stored energy pushes the piston rod back into its initial position. The element is again ready for use.