A return spring keeps the diaphragm in the starting position until the brake pedal is applied.

In the Automag, this is accomplished by the return spring.

This pulling action will retract the slide back against the return spring.

However, the design was too fragile, with internal pivots and the return spring failing frequently.

The left pedal when depressed caused the whole keyboard and action to slide to the right against a return spring mounted inside the case.

The operator may or may not include a return spring to close the door in case of power failure while the door is open.

The guide rods are hollow and contain the return springs.

There is a short cylinder which contains a piston and its associated return spring.

The butt hosts a tube which contains the return spring and its guide.

But his return spring was like that of a starving wolf.