Patent ID: 7610814
Filing Date: 2009-11-03
Classification: B81B,B81C

Abstract:
1. A micromechanical device comprising: a base support; an annular frame parallel to the base support; a mobile beam having two ends and forming a portion of the micromechanical device that can sag, the beam being attached via the two ends thereof to the annular frame, the beam having a predetermined stressed state; and means for controlling the sag of the beam, perpendicular to the base support, comprising at least one stressed element belonging to the annular frame and enabling the state of stress of the beam to be adjusted, wherein the annular frame is more rigid than the beam and comprises two arms, each arm of the annular frame having two ends respectively secured to the two ends of the mobile beam and each arm of the annular frame having a middle part arranged between the two ends of the corresponding arm, the arms and the middle parts of the arms presenting a front face and a rear face, the rear face of the middle part of each arm being attached to the base support and the ends of the arms being free from attachment to the base support.