The coupled spring system provides a system spring constant that is lower than either spring individually.

A spring system comprises at least two springs (2, 3), one of which has a variable characteristic.

Cabs for heavy-duty vehicles are springingly supported by two forward and two rear gas springs (4, 5) on the vehicle frame or chassis.

An electrically operated linear movable piston oscillates between two springs.

Said control members preferably include two counteracting springs.

The shackle is biased by two springs (54, 55) integral with the shackle.

Two wrap springs, concentric or axially spaced, provide bi-directional braking.

The tension on both springs (50, 64) is adjustable.

The pair of torsion springs (35) are separately sleeved on a pair of pin shafts (221) for the torsion springs on a lower plate (22) of the metal inner shell (2).

The invention is a nested spring assembly.

The assembly comprises a first spring and a second spring, and both the first and second springs have an inner and outer surface.

A pair of springs cooperates with the jaw members, each of the springs being mounted separately in each of the recesses for biasing each of the jaw members into the opening.

There is two circles, which seem like two springs.

At least two adjacent springs (40) are provided on the wedge-shaped section (13).

Two lower springs (86) extend from the armature to a lower support surface and bias the armature in a normally spaced-apart relationship from the electromagnetic element.