Patent ID: 8739627

Claim:
An inertial sensor comprising: a substrate having a surface; a drive mass configured to undergo oscillatory motion within a plane substantially parallel to said surface; a sense mass linked to said drive mass, said sense mass including first and second ends, wherein an entirety of said first end is located on a first side of an axis of rotation, an entirety of said second end is located on a second side of said axis of rotation, and said first and second ends are symmetrically displaced away from said axis of rotation; an on-axis torsion spring coupled to said sense mass, said on-axis torsion spring being co-located with an axis of rotation; and an off-axis spring system having a connection interface that is coupled to said sense mass at a location on said sense mass that is displaced away from said axis of rotation, said off-axis spring system including a first off-axis spring disposed at said first end of said sense mass and a second off-axis spring disposed at said second end of said sense mass, each of said first and second off-axis springs including said connection interface, wherein said on-axis torsion spring and said off-axis spring system enable said sense mass to oscillate out of said plane.