Patent ID: 8272268

Claim:
An acceleration sensor, comprising: a substrate; a rocker mass; at least two z springs connected to the rocker mass and arranged to allow the rocker mass to rotate about an axis; and at least one additional spring system connected to the substrate and the rocker mass; wherein the additional spring system is configured to allow the rocker mass to deflect in at least one of (a) an x and (b) a y direction oriented one of (a) parallel and (b) perpendicular to the axis, at least one of (a) the at least two z springs and (b) the additional spring system configured to allow the rocker mass to deflect in at least one of (a) a y and (b) an x direction oriented one of (a) parallel and (b) perpendicular to the axis, wherein the rocker mass is connected to a frame having an internal surface that is subdivided into two sections of different sizes by the at least two springs.