Patent ID: 8624759

Claim:
An apparatus, comprising: a base element; a key top configured to pivot in relation to the base element; a first electrode coupled with the key top; a second electrode coupled with the base element; and an isolating layer; the key top having a first pivoted position in which the first electrode, the second electrode, and the isolating layer form a capacitor with a first capacitance, and a second pivoted position in which the first electrode, the second electrode, and the isolating layer form a capacitor with a second capacitance, wherein the key top has a neutral position in which one of the first electrode and the second electrode are not in contact with the isolating layer, and wherein at least one of the first electrode and the second electrode is configured to undergo a resilient deformation in order to take the shape of the second pivoted position such that substantially no air gap exists between the first electrode and the isolating layer.