Patent ID: 8375788

Claim:
A device that detects a rotation around a first axis, the device comprising: a substrate; a first zone having a first thickness and including at least one mass, defining, idle, a plane, arranged at a distance from a second axis of rotation contained in the plane, the mass being able to be caused to vibrate in the plane, perpendicular to the first axis of rotation, and at least two connecting arms that connect said mass to said second axis of rotation; means for causing said mass to vibrate in the plane; a second zone, of second thickness forming, for at least one of the two connecting arms, at least one connection with the substrate for a rotation around said second axis of rotation, the second zone having a thickness smaller than or equal to that of the first zone; and a third zone with a thickness smaller than that of the second zone, including at least one suspended strain gauge that detects rotational movement around said second axis of rotation, the third zone extends in a plane parallel to the plane of the substrate and does not contain the second axis of rotation, extends in a plane perpendicular to the second axis of rotation, and is connected to one of the first and second zones and to the substrate, wherein the mass moves in a direction out of the plane in response to the device rotating around the first axis of rotation.