Question about spring mechanism for a hard pad

[rddr]

What kind of spring mechanism is used for the spring that separates the arrow contacts in a hard pad? Is the spring integrated with the sensor? Is the spring from the top plate for the arrow? None of the above?
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Dance Dance Revolution versions owned:
Xbox:
1) DDR Ultramix 2) DDR Ultramix 2 3) DDR Ultramix 3 4) DDR Ultramix 4
Playstation 2:
1) DDR Supernova 2 2) DDR X

[Weston]

There aren't any springs in arcade or most hard pads pads. The sensors in arcade pads are a rubbery pressure sensor that completes a circuit when enough pressure is applied to it. Home hard pads usually use a weatherstripping, mousepad, or something else depending on the design.