Patent ID: 8539836

Claim:
A microelectromechanical systems (MEMS) sensor comprising: a substrate; a first movable element positioned in spaced apart relationship above a generally planar surface of said substrate, said first movable element being adapted for rotational motion in a first direction in response to acceleration along an axis perpendicular to said planar surface of said substrate, said rotational motion occurring about a first rotational axis positioned between first and second ends of said first movable element; and a second movable element positioned in spaced apart relationship above said surface of said substrate, said second movable element being adapted for rotational motion in a second direction in response to said acceleration, said rotational motion occurring about a second rotational axis positioned between third and fourth ends of said second movable element, said second direction being opposite to said first direction, said first and second movable elements having a substantially equivalent shape and said second movable element being generally oriented in rotational symmetry relative to said first movable element about a point location on said planar surface of said substrate such that said first and second movable elements are disposed beside one another along a direction of a common rotational axis, and said first and second rotational axes extend along said common rotational axis, wherein: said first movable element includes a first section between said first rotational axis and said first end and a second section between said first rotational axis and said second end, said first rotational axis being offset between said first and second ends such that a first length of said first section between said first rotational axis and said first end is greater than a second length of said second section between said first rotational axis and said second end; and said second movable element includes a third section between said second rotational axis and said third end and a fourth section between said second rotational axis and said fourth end, said second rotational axis being offset between said third and fourth ends such that a third length of said third section between said second rotational axis and said third end is less than a fourth length of said fourth section between said second rotational axis and said fourth end.