Patent ID: 8516891

Claim:
A MEMS system comprising: a movable mass having at least one contact surface; a stopper for stopping a movement of the mass, the stopper having a first contact surface that contacts a corresponding first contact surface of the mass if a sufficient movement of the mass occurs in a first direction and a second contact surface that contacts a corresponding second contact surface of the mass if a sufficient movement of the mass occurs in a second direction wherein the second direction is opposite to the first direction; a first stopper gap formed between the first contact surface of the stopper and the corresponding first contact surface of the mass and a second stopper gap formed between the second contact surface of the stopper and the corresponding second contact surface of the mass; and a spring system in communication with and adjacent to at least one of the first and second stopper gaps wherein the spring system is formed as part of the moveable mass and wherein the spring system comprises at least two spring structures, each spring structure abutting a different stopper gap around the stopper.