Patent ID: 7252002

Claim:
An inertial sensor, comprising: a first region of semiconductor material formed by a first plurality of arc-shaped regions arranged on concentric circumferences, said first region being fixed; and a second region of semiconductor material formed by a second plurality of arc-shaped regions arranged on concentric circumferences, each of said arc-shaped regions of said first plurality facing, on a first side thereof, a respective arc-shaped region of said second plurality, and positioned such that a distance between each of said arc-shaped regions of said first plurality and the respective arc-shaped region of said second plurality is substantially less than a distance between each of said arc-shaped regions of said first plurality and any of the arc-shaped regions of said second plurality positioned on a second side of the respective one of said first plurality of arc-shaped regions, said second region being mobile and extending in a plane, and said second region being translatable with respect to said first region in any direction belonging to said plane.